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Connecticut Subregional Drainage Basin Town Intersect
SDE Feature Class - depgis.DEP.SUBREGIONAL_BASIN_TOWN_INTERSCT
FGDC, ESRI Metadata
DescriptionGraphicSpatialData StructureData QualityData SourceData DistributionMetadata
+ Resource Description
Citation
Information used to reference the data.
Title: Connecticut Subregional Drainage Basin Town Intersect
Originators: State of Connecticut, Department of Environmental Protection (data compiler, editor and publisher)
Publisher: State of Connecticut, Department of Environmental Protection
Publication place: Hartford, Connecticut, USA
Publication date: 1988
Edition: 2006
Data type: vector digital data
Data location: http://www.ct.gov/deep
Other citation details:
The State of Connecticut, Department of Environmental Protection is the collector of the data (compiler), the creator and maintainer of the data layer (editor), and producer (publisher) of this information for use. This data is not updated. Source map scale is 1:24,000.
Larger Work Citation
Title: Natural Drainage Basins in Connecticut
Originators: Marianne McElroy, State of Connecticut, Department of Environmental Protection, Natural Resources Center
Series name: Connecticut Natural Resources Atlas Series
Series identification: Drainage Basins Map
Publisher: State of Connecticut, Department of Environmental Protection
Publication place: Hartford, Connecticut, USA
Publication date: 1981
Data type: map
Other citation details:
The Natural Drainage Basins in Connecticut map is published by the State of Connecticut, Department of Environmental Protection, Natural Resources Center in cooperation with the U.S. Geological Survey. The map was funded in part by the Water Resources Council. Map scale 1:125,000.
Description
A characterization of the data, including its intended use and limitations.
Abstract:
Connecticut Subregional Drainage Basin Town Intersect is 1:24,000-scale data that is the geographic intersection of subregional drainage basins and towns in Connecticut. It includes polygon features that define where the Connecticut Subregional Drainage Basin Poly and Connecticut Town Polygon layers intersect and overlap each other. The geographic area covered includes the Connecticut mainland and islands along the Connecticut coastline. The total geographic area covered by all polygon features is 4,967.56 square miles. Data is compiled at 1:24,000 scale (1 inch = 2,000 feet). This is static information that is not updated.

Polygon feature attributes include basin number and name, town number and name, and feature size in acres and square miles. Each polygon feature includes the 1-digit major (MBAS_NO), 2-digit regional (RBAS_NO), 4-digit subregional (SBAS_NO) drainage basin number, and the Connecticut Town number (TOWN_NO). Subregional drainage basins typically are located in more than one town and a town will include more than one basin. A polygon feature exists for each subregional basin - town occurrence.

Connecticut Subregional Drainage Basin Town Intersect is derived from the intersection of the geometry and attributes of the Connecticut Subregional Drainage Basins for Clipping and Connecticut Town Polygon feature classes.
Purpose:
These data are used for geoprocessing and analysis purposes. They function as a two-way index of basins and towns, identifying the towns each subregional drainage basin is located in as well as identifying the subregional drainage basins located in each town. A town can be analyzed relative to basins, or a basin can be analyzed relative to towns. A polygon feature exists for each area where a subregional basin overlaps a town. If a basin is located in two different parts of town, a polygon feature will exist for each. Polygon feature size is available in square miles or acres so basin occurrence as a percent of town area can be determined.

These data are intended for analysis with other digital data compiled at 1:24,000 scale or greater.
Supplemental information:
A standardized mapping of natural drainage basins in Connecticut was completed in 1981 by the Connecticut Department of Environmental Protection. This drainage basin system divided Connecticut into 8 major basins, 45 regional basins, 337 subregional basins, 2,898 local basins, and 7,067 small drainage basin areas. Major basins are subdivided into regional basins. Regional basins are subdivided into subregional basins. Subregional basins are subdivided into local basins. Local basins are subdivided into smaller drainage basin areas for impoundments and river reaches. 

A pair of 1:24,000-scale polygon and line feature classes is available for all basin levels. These data are named Connecticut Major Basins, Connecticut Regional Basins, Connecticut Subregional Basins, Connecticut Local Basins, and Connecticut Drainage Basins. Connecticut Drainage Basins includes the most detailed information upon which the other basin datasets are based.

A hierarchical drainage basin number was assigned to uniquely identify drainage basin areas. Drainage basin areas are numbered sequentially beginning upstream and proceeding downstream. The first digit (column 1) identifies the major basin, the first two digits (columns 1-2) identify the regional basin, the first 4 digits (columns 1-4) identify the subregional basin, and the first seven digits (columns 1-7) identify the local basin. Below are examples of the hierarchical drainage basin numbers.

Basin Numbers:

4 = Major drainage basin number, MBAS_NO (column 1)
43 = Regional drainage basin number, RBAS_NO (columns 1-2)
4302 = Subregional drainage basin number, SBAS_NO (columns 1-4)
4302-04 = Local drainage basin number, LBAS_NO (columns 1-7)
4302-04-1-R12 = Basin drainage identification number, BASIN_NO (columns 1-13)

Stream Order (column 9):

4304-00-1 = Stream order value of 1 represents a headwater basin.
4304-00-2 = Stream order value > 1 denotes the complexity of the drainage basin morphology.

Mapping Status Element (column 10):

4302-00-2- = Ending with minus sign (-) denotes detail mapping at 1:24,000 scale for entire basin.

4302-00-2+ = Ending with plus sign (+) denotes detailed mapping not performed at 1:24,000 scale for the entire drainage basin. The Stream Order value will not reflect the complexity of the drainage basin morphology.

4302-00-1* = Ending with asterisk sign (*) denotes a headwater basin containing a delineated impoundment into which a delineated drainage basin outlets.

Reach-Impoundment Identifier (column11) and Number (column 12-13):

4302-00-1-L1 = The value for the Reach-Impoundment Identifier for an impounment basin is L (for lake). It is followed by the Reach-Impoundment Number (1).

4302-04-1-R12 = The value for the Reach-Impoundment Identifier for a stream reach basin is R (for reach). It is followed the Reach-Impoundment Number (12).
Dataset credit:
Tom Nosal, State of Connecticut, Department of Environmental Protection, for the final compilation and delineation of 1:24,000-scale drainage basin boundaries, assignment of drainage basin numbers, and conversion to digitial format. Basin boundaries were manually delineated at 1:24,000-scale by visually interpreting the 10 feet contour elevation lines and waterbody features appearing on 1:24,000-scale 7.5 minute USGS topographic quadrangle maps for Connecticut published between 1969 and 1984. The metadata abstract includes a brief description of a drainage basin obtained from material written by Jim Murphy in an article entitled Reading the Landscape published in the Citizen's Bulletin, a CT DEP monthy magazine.
Language of dataset: en
Point Of Contact
Contact information for the individual or organization that is knowledgeable about the data.
Organization: State of Connecticut, Department of Environmental Protection
Person: Howie Sternberg
Phone: 860-424-3540
Fax: 860-424-4058
Email: dep.gisdata@ct.gov
Hours of service: Monday to Friday, 08:30 to 16:30 Eastern Standard Time
Address type: mailing and physical address
Address:
79 Elm Street
City: Hartford
State or Province: Connecticut
Postal code: 06106-5127
Country: USA
Data Type
How the data are represented, formatted and maintained by the data producing organization.
File or table name: depgis.DEP.SUBREGIONAL_BASIN_TOWN_INTERSCT
Data type: vector digital data
Data format: SDE Feature Class
Native dataset environment: These data are maintained by the State of Connecticut using ArcGIS software developed by Environmental Systems Research Institute (ESRI) in a Microsoft Windows operating system environment.
Time Period of Data
Time period(s) for which the data corresponds to the currentness reference.
Date: 1988
Currentness reference:
publication date
Status
The state of and maintenance information for the data.
Data status: Complete
Update frequency: None planned
Key Words
Words or phrases that summarize certain aspects of the data.
Theme:
Keywords: drainage basin, drainage area, watershed, basin divide, major, regional, subregional, local, gazetteer , politcal boundary, state, town, municipality
Keyword thesaurus: None
Theme:
Keywords: boundaries, elevation, inlandWaters
Keyword thesaurus: ISO 19115 Topic Category
Place:
Keywords: United States, Connecticut, CT
Keyword thesaurus: U.S. Department of Commerce, 1987, Codes for the Identification of the States, the District of Columbia and the Outlying Areas of The United States, and Associated Areas (Federal Information Processing Standard 5-2): Washington, DC, National Institute of Standards and Technology.
Place:
Keywords: United States of America, USA
Keyword thesaurus: U.S. Department of Commerce, 1995, Countries, Dependencies, Areas of Special Sovereignty, and Their Principal Administrative Divisions (Federal Information Processing Standard (FIPS) 10-4): Washington, D.C., National Institute of Standards and Technology.
Data Access Constraints
Restrictions and legal prerequisites for accessing or using the data after access is granted.
Access constraints:
None. The data is in the public domain and may be redistributed.
Use constraints:
No restrictions or legal prerequisites for using the data. The data is suitable for use at appropriate scale, and is not intended for maps printed at scales greater or more detailed than 1:24,000 scale (1 inch = 2,000 feet). Although this data set  has been used by the State of Connecticut, Department of Environmental Protection, no warranty, expressed or implied, is made by the State of Connecticut, Department of Environmental Protection as to the accuracy of the data and or related materials.  The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the State of Connecticut, Department of Environmental Protection in the use of these data or related materials. The user assumes the entire risk related to the use of these data. Once the data is distributed to the user, modifications made to the data by the user should be noted in the metadata. When printing this data on a map or using it in a software application, analysis, or report, please acknowledge the State of Connecticut, Department of Environmental Protection as the source for this information. For example, include the following data source description when this layer is used in analysis or when printed on a map: Basins - From the Subregional Drainage Basin Town Intersect layer, compiled and published by CT DEP. Source map scale is 1:24,000.
Cross Reference
Information about other, related data sets that are likely to be of interest.
Title: Gazetteer of Drainage Basin Areas of Connecticut
Originators: Tom Nosal, Department of Environmental Protection, State of Connecticut (compiler and publisher)
Series name: Water Resources Bulletin
Series identification: No 15
Publisher: State of Connecticut, Department of Environmental Protection
Publication place: Hartford, Connecticut, USA
Publication date: 19970101
Data type: document
Other citation details:
Gazetteer of Drainage Basin Areas of Connecticut is organized by the eight major drainage basins covering Connecticut. The individual basins that comprise each major basin are listed in hydrologic sequence, headwater to outfall, with drainage basin number, description, basin area, and cummulative drainage area listed for each individual basin.
+ Graphic Example
Browse Graphic
Graphic illustration of the data.
Browse graphic 1
Open - Full view of Connecticut Subregional Basin Town Intersect. Data is limited to the State of Connecticut. Each feature includes subregional drainage basin and town number and name.
Graphic Image

Browse graphic 2
Open - Detail view of Connecticut Subregional Basin Town Intersect.
Graphic Image

Browse graphic 3
Open - Detail view of Connecticut Subregional Basin Town Intersect with features for the Town of Clinton outlined. Features are labeled with the 4-digit subregional drainage basin number and town name.
Graphic Image
+ Spatial Reference Information
Horizontal Coordinate System
Reference system from which linear or angular quantities are measured and assigned to the position that a point occupies.
Projected coordinate system:
Name: NAD 1983 StatePlane Connecticut FIPS 0600 Feet
Map units: survey feet
Geographic coordinate system:
Name: GCS North American 1983
Coordinate System Details
Map projection
Map projection name: Lambert Conformal Conic
Standard parallel: 41.200000
Standard parallel: 41.866667
Longitude of central meridian: -72.750000
Latitude of projection origin: 40.833333
False easting: 999999.999996
False northing: 499999.999998
Planar Coordinate Information
Planar coordinate encoding method: coordinate pair
Coordinate representation:
Abscissa resolution: 0.000250
Ordinate resolution: 0.000250
Planar distance units: survey feet
Geodetic model
Horizontal datum name: North American Datum of 1983
Ellipsoid name: Geodetic Reference System 80
Semi-major axis: 6378137.000000
Denominator of flattening ratio: 298.257222
Vertical Coordinate System
Reference system from which vertical distances (altitudes or depths) are measured.
Altitude system definition:
Altitude resolution: 1.000000
Altitude encoding method: Explicit elevation coordinate included with horizontal coordinates
Spatial Domain
The geographic areal domain of the data that describes the western, eastern, northern, and southern geographic limits of data coverage.
Bounding Coordinates
In Projected or local coordinates
NAD 1983 StatePlane Connecticut FIPS 0600 Feet
BoundaryCoordinate
Left730512.188000 (survey feet)
Right1263094.375000 (survey feet)
Top944279.125000 (survey feet)
Bottom554854.688000 (survey feet)
In Unprojected coordinates (geographic)
GCS North American 1983
BoundaryCoordinate
West-73.742172 (longitude)
East-71.781365 (longitude)
North42.052612 (latitude)
South40.979708 (latitude)
+ Data Structure and Attribute Information
Overview
Summary of the information content of the data, including other references to complete descriptions of entity types, attributes, and attribute values for the data.
Entity and attribute overview:
Information encoded for drainage basin polygon features generally includes drainage basin number and name, town number and name, and feature size. The SBAS_NO uniquely identifes subreginal drainage basins and uniquely identifies each polygon feature. It represents the first 4 digits of the 13 digit BASIN_NO. The drainage basin numbering system is hierarchical. Use the MBAS_NO and RBAS_NO attributes to identify the major and regional drainage basin for each subregional drainage basin feature. The TOWN_NO identifies the Connecticut Town the basin feature is located in. Typically basins are located in more than one town and a town will include more than one basin so there is a polygon feature for each subregional basin - town occurrence. Use the AREA_SQMI and ACREAGE attributes to determine drainage basin - town polygon feature size. These values reflect the area of the respective polygon feature. They do not reflect the cumulative (upstream) drainage area for each basin. Note, ACREAGE and AREA_SQMI values are not automatically updated after modifying feature geometry (shape). These values must be recalculated after features are edited, simplified, generalized, clipped, dissolved, etc.
Entity and attribute detailed citation:
Basin Numbers:

4 = Major drainage basin number, MBAS_NO (column 1)
43 = Regional drainage basin number, RBAS_NO (columns 1-2)
4302 = Subregional drainage basin number, SBAS_NO (columns 1-4)
4302-04 = Local drainage basin number, LBAS_NO (columns 1-7)
4302-04-1-R12 = Basin drainage identification number, BASIN_NO (columns 1-13)

Stream Order (column 9):

4304-00-1 = Stream order value of 1 represents a headwater basin.
4304-00-2 = Stream order value > 1 denotes the complexity of the drainage basin morphology.

Mapping Status Element (column 10):

4302-00-2- = Ending with minus sign (-) denotes detail mapping at 1:24,000 scale for entire basin.

4302-00-2+ = Ending with plus sign (+) denotes detailed mapping not performed at 1:24,000 scale for the entire drainage basin. The Stream Order value will not reflect the complexity of the drainage basin morphology.

4302-00-1* = Ending with asterisk sign (*) denotes a headwater basin containing a delineated impoundment into which a delineated drainage basin outlets.

Reach-Impoundment Identifier (column11) and Number (column 12-13):

4302-00-1-L1 = The value for the Reach-Impoundment Identifier for an impounment basin is L (for lake). It is followed by the Reach-Impoundment Number (1).

4302-04-1-R12 = The value for the Reach-Impoundment Identifier for a stream reach basin is R (for reach). It is followed the Reach-Impoundment Number (12).
Entity and attribute detailed citation:
Connecticut Town numbers, based on the Town Codes issued by the State of Connecticut, range from 1 to 169 in the following order:

Andover (1), Ansonia (2), Ashford (3), Avon (4), Barkhamsted (5), Beacon Falls (6), Berlin (7), Bethany (8), Bethel (9), Bethlehem (10), Bloomfield (11), Bolton (12), Bozrah (13), Branford (14), Bridgeport (15), Bridgewater (16), Bristol (17), Brookfield (18), Brooklyn (19), Burlington (20), Canaan (21), Canterbury (22), Canton (23), Chaplin (24), Cheshire (25), Chester (26), Clinton (27), Colchester (28), Colebrook (29), Columbia (30), Cornwall (31), Coventry (32), Cromwell (33), Danbury (34), Darien (35), Deep River (36), Derby (37), Durham (38), Eastford (39), East Granby (40), East Haddam (41), East Hampton (42), East Hartford (43), East Haven (44), East Lyme (45), Easton (46), East Windsor (47), Ellington (48), Enfield (49), Essex (50), Fairfield (51), Farmington (52), Franklin (53), Glastonbury (54), Goshen (55), Granby (56), Greenwich (57), Griswold (58), Groton (59), Guilford (60), Haddam (61), Hamden (62), Hampton (63), Hartford (64), Hartland (65), Harwinton (66), Hebron (67), Kent (68), Killingly (69), Killingworth (70), Lebanon (71), Ledyard (72), Lisbon (73), Litchfield (74), Lyme (75), Madison (76), Manchester (77), Mansfield (78), Marlborough (79), Meriden (80), Middlebury (81), Middlefield (82), Middletown (83), Milford (84), Monroe (85), Montville (86), Morris (87), Naugatuck (88), New Britain (89), New Canaan (90), New Fairfield (91), New Hartford (92), New Haven (93), Newington (94), New London (95), New Milford (96), Newtown (97), Norfolk (98), North Branford (99), North Canaan (100), North Haven (101), North Stonington (102), Norwalk (103), Norwich (104), Old Lyme (105), Old Saybrook (106), Orange (107), Oxford (108), Plainfield (109), Plainville (110), Plymouth (111), Pomfret (112), Portland (113), Preston (114), Prospect (115), Putnam (116), Redding (117), Ridgefield (118), Rocky Hill (119), Roxbury (120), Salem (121), Salisbury (122), Scotland (123), Seymour (124), Sharon (125), Shelton (126), Sherman (127), Simsbury (128), Somers (129), Southbury (130), Southington (131), South Windsor (132), Sprague (133), Stafford (134), Stamford (135), Sterling (136), Stonington (137), Stratford (138), Suffield (139), Thomaston (140), Thompson (141), Tolland (142), Torrington (143), Trumbull (144), Union (145), Vernon (146), Voluntown (147), Wallingford (148), Warren (149), Washington (150), Waterbury (151), Waterford (152), Watertown (153), Westbrook (154), West Hartford (155), West Haven (156), Weston (157), Westport (158), Wethersfield (159), Willington (160), Wilton (161), Winchester (162), Windham (163), Windsor (164), Windsor Locks (165), Wolcott (166), Woodbridge (167), Woodbury (168), and Woodstock (169).
Direct spatial reference method: Vector
Indirect spatial reference method: Connecticut DEP Major Basin Number, Regional Basin Number, Subregional Basin Number, Local Basin Number, Basin Number
Attributes of Connecticut Subregional Drainage Basin Town Intersect
Detailed descriptions of entity type, attributes, and attribute values for the data.
Name: depgis.DEP.SUBREGIONAL_BASIN_TOWN_INTERSCT
Type of object: Feature Class
Geometry type: Polygon
Number of records: 2099
Description:
Polygon features depict the intersection and overlap of Connecticut Subregional drainage basins and Connecticut towns (municipalities). There is one polygon feature for each subregional drainage basin - town combination, including one for each coastal island identifying both the town the island is located in and the coastal subregional basin the island is offshore of.
Source:
State of Connecticut, Department of Environmental Protection
Attributes
OBJECTID
Definition:
Internal feature number.
Alias: OBJECTID Type: OID Width: 4 Precision: 10 Scale: 0
Attribute values: Sequential unique whole numbers that are automatically generated.
Attribute definition source:
ESRI
SHAPE
Definition:
Feature geometry.
Alias: Shape Type: Geometry Width: 4 Precision: 0 Scale: 0
Attribute values: Coordinates defining the features.
Attribute definition source:
ESRI
SBAS_NO
Definition:
Subregional Drainage Basin Number - This number defines the Subregional drainage basin and is the first 4 digits of the 13-digit drainage basin identification number (BASIN_NO). The first digit corresponds to the Major basin number (MBAS_NO) and the first 2 digits represent the Regional basin number (RBAS_NO). All Subregional basins in the same Major and Regional basin have the same first and first 2 digits, respectively. A Subregional drainage basin number ending in "00" defines the main-stem basin for the corresponding Regional drainage basin. For example, Subregional basin 4300 is the main-stem basin for Regional basin 43. These main-stem Subregional basins are usually named after the corresponding Regional basin.
Alias: SBAS_NO Type: SmallInteger Width: 2 Precision: 5 Scale: 0Output width: 4
Attribute domain values
ValueDefinition
1000
Pawcatuck River
1001
Wyassup Brook
1002
Green Fall River
1003
Ashaway River
1004
Shunock River
1100
Wood River
1101
Brushy Brook
2000
Southeast Shoreline
2101
Anguilla Brook
2102
Copps Brook
2103
Williams Brook
2104
Whitford Brook
2105
Haleys Brook
2106
Mystic River
2107
Great Brook
2201
Jordan Brook
2202
Latimer Brook
2203
Oil Mill Brook
2204
Niantic River
2205
Pattagansett River
2206
Bride Brook
2207
Fourmile River
3000
Thames River
3001
Trading Cove Brook
3002
Shewville Brook
3003
Poquetanuck Brook
3004
Oxoboxo Brook
3005
Stony Brook
3006
Hunts Brook
3100
Willimantic River
3101
Edson Brook
3102
Middle River
3103
Furnace Brook
3104
Roaring Brook
3105
Mill Brook
3106
Skungamaug River
3107
Burnap Brook
3108
Hop River
3109
Giffords Brook
3110
Tenmile River
3200
Natchaug River
3201
Bungee Brook
3202
Still River
3203
Bigelow Brook
3204
Stonehouse Brook
3205
Squaw Hollow Brook
3206
Mount Hope River
3207
Fenton River
3208
Sawmill Brook
3300
French River
3301
Mill Brook
3400
Fivemile River
3401
Rocky Brook
3402
Mary Brown Brook
3403
Cady Brook
3404
Whetstone Brook
3500
Moosup River
3501
Quanduck Brook
3502
Snake Meadow Brook
3503
Ekonk Brook
3600
Pachaug River
3601
Great Meadow Brook
3602
Mount Misery Brook
3603
Denison Brook
3604
Myron Kinney Brook
3605
Billings Brook
3700
Quinebaug River
3701
Hamilton Reservoir Brook
3702
Breakneck Brook
3703
Hatchet Brook
3704
Cohasse Brook
3705
Lebanon Brook
3706
English Neighborhood Brook
3707
Mill Brook
3708
Little River
3709
Wappoquia Brook
3710
Mashamoquet Brook
3711
Blackwell Brook
3712
Fry Brook
3713
Mill Brook
3714
Kitt Brook
3715
Cory Brook
3716
Broad Brook
3717
Choate Brook
3800
Shetucket River
3801
Indian Hollow Brook
3802
Beaver Brook
3803
Merrick Brook
3804
Beaver Brook
3805
Little River
3900
Yantic River
3901
Exeter Brook
3902
Bartlett Brook
3903
Sherman Brook
3904
Deep River
3905
Pease Brook
3906
Gardner Brook
3907
Susquetonscut Brook
4000
Connecticut River
4001
Great Brook
4002
Threemile Brook
4003
Freshwater Brook
4004
Podunk River
4005
Folly Brook
4006
Salmon Brook
4007
Hubbard Brook
4008
Cold Brook
4009
Roaring Brook
4010
Goff Brook
4011
Reservoir Brook
4012
Carr Brook
4013
Sumner Brook
4014
Higganum Creek
4015
Mill Creek
4016
Whalebone Creek
4017
Chester Creek
4018
Deep River
4019
Falls River
4020
Lieutenant River
4021
Black Hall River
4100
Stony Brook
4101
Muddy Brook
4200
Scantic River
4201
Watchaug Brook
4202
Gillettes Brook
4203
Gulf Stream
4204
Abbey Brook
4205
Buckhorn Brook
4206
Broad Brook
4207
Ketch Brook
4300
Farmington River
4301
Slocum Brook
4302
Mad River
4303
Still River
4304
Sandy Brook
4305
Morgan Brook
4306
Valley Brook
4307
Hubbard Brook
4308
East Branch Farmington River
4309
Cherry Brook
4310
Nepaug River
4311
Burlington Brook
4312
Roaring Brook
4313
Poland River
4314
Copper Mine Brook
4315
Pequabuck River
4316
Thompson Brook
4317
Nod Brook
4318
Hop Brook
4319
West Branch Salmon Brook
4320
Salmon Brook
4321
Mill Brook
4400
Park River
4401
Bass Brook
4402
Piper Brook
4403
Trout Brook
4404
North Branch Park River
4500
Hockanum River
4501
Charters Brook
4502
Marsh Brook
4503
Tankerhoosen River
4504
South Fork Hockanum River
4600
Mattabesset River
4601
Belcher Brook
4602
Willow Brook
4603
Webster Brook
4604
Sawmill Brook
4605
Allyn Brook
4606
Sawmill Brook
4607
Coginchaug River
4700
Salmon River
4701
Raymond Brook
4702
Judd Brook
4703
Meadow Brook
4704
Pine Brook
4705
Jeremy River
4706
Fawn Brook
4707
Blackledge River
4708
Dickinson Creek
4709
Pine Brook
4710
Moodus River
4800
Eightmile River
4801
Harris Brook
4802
East Branch Eightmile River
4803
Beaver Brook
5000
South Central Shoreline
5101
Oyster River
5102
Patchogue River
5103
Menunketesuck River
5104
Indian River
5105
Chatfield Hollow Brook
5106
Hammonasset River
5107
Neck River
5108
East River
5109
Sluice Creek
5110
West River
5111
Branford River
5112
Farm River
5200
Quinnipiac River
5201
Eightmile River
5202
Tenmile River
5203
Misery Brook
5204
Broad Brook
5205
Sodom Brook
5206
Harbor Brook
5207
Wharton Brook
5208
Muddy River
5301
Willow Brook
5302
Mill River
5303
Sargent River
5304
Wintergreen Brook
5305
West River
5306
Indian River
5307
Wepawaug River
6000
Housatonic River
6001
Sages Ravine Brook
6002
Schenob Brook
6003
Andrus Brook
6004
Konkapot River
6005
Factory Brook
6006
Spruce Swamp Creek
6007
Salmon Creek
6008
Mill Brook
6009
Carse Brook
6010
Furnace Brook
6011
Guinea Brook
6012
Kent Falls Brook
6013
Cobble Brook
6014
Bog Hollow Brook
6015
Macedonia Brook
6016
Womenshenuk Brook
6017
Morrissey Brook
6018
Pond Brook
6019
Deep Brook
6020
Pootatuck River
6021
Kettletown Brook
6022
Halfway River
6023
Eightmile Brook
6024
Means Brook
6025
Farmill River
6026
Pumpkin Ground Brook
6100
Blackberry River
6101
Whiting River
6200
Hollenbeck River
6201
Brown Brook
6202
Wangum Lake Brook
6300
Tenmile River
6301
Indian Lake Creek
6302
Mill Brook
6303
Webatuck Creek
6304
Deuel Hollow Brook
6305
Mill River
6306
Swamp River
6400
Lake Candlewood
6401
Sawmill Brook
6402
Ball Pond Brook
6500
West Aspetuck River
6501
Merryall Brook
6502
East Aspetuck River
6600
Still River
6601
Miry Brook
6602
Boggs Pond Brook
6603
Padanaram Brook
6604
Sympaug Brook
6605
East Swamp Brook
6606
Limekiln Brook
6700
Shepaug River
6701
Marshepaug River
6702
West Branch Shepaug River
6703
West Branch Bantam River
6704
Butternut Brook
6705
Bantam River
6706
Jacks Brook
6800
Pomperaug River
6801
East Spring Brook
6802
Nonewaug River
6803
Sprain Brook
6804
Weekeepeemee River
6805
Hesseky Brook
6806
Transylvania Brook
6900
Naugatuck River
6901
Hall Meadow Brook
6902
Hart Brook
6903
Nickel Mine Brook
6904
West Branch Naugatuck River
6905
East Branch Naugatuck River
6906
Spruce Brook
6907
Rock Brook
6908
Leadmine Brook
6909
Northfield Brook
6910
Branch Brook
6911
Hancock Brook
6912
Steele Brook
6913
Beaver Pond Brook
6914
Mad River
6915
Fulling Mill Brook
6916
Hop Brook
6917
Long Meadow Pond Brook
6918
Beacon Hill Brook
6919
Bladens River
6920
Little River
7000
Southwest Shoreline
7101
Lewis Gut
7102
Bruce Brook
7103
Yellow Mill Channel
7104
Booth Hill Brook
7105
Pequonnock River
7106
Ash Creek
7107
Cricker Brook
7108
Mill River
7109
Sasco Brook
7200
Saugatuck River
7201
Little River
7202
Aspetuck River
7203
West Branch Saugatuck River
7300
Norwalk River
7301
Comstock Brook
7302
Silvermine River
7401
Fivemile River
7402
Darien River
7403
Noroton River
7404
Mill River
7405
Rippowam River
7406
East Branch Mianus River
7407
Mianus River
7408
Greenwich Creek
7409
Horseneck Brook
7410
East Branch Byram River
7411
Byram River
7412
Blind Brook
8000
Hudson River
8100
Croton River
8101
Quaker Brook
8102
Corner Pond Brook
8103
East Branch Croton River
8104
Titicus River
8105
Waccabuc River
Attribute definition source:
State of Connecticut, Department of Environmental Protection
SUBREGION
Definition:
Subregional Drainage Basin Name - Text values that correspond to numeric SBAS_NO attribute values. SUBREGION is the English language equivalent of (decodes) the SBAS_NO field.
Alias: SUBREGION Type: String Width: 30 Precision: 0 Scale: 0Output width: 30
Attribute values: See Enumerated Domain Value Definitions for SBAS_NO attribute.
Attribute definition source:
State of Connecticut, Department of Environmental Protection
RBAS_NO
Definition:
Regional Drainage Basin Number - This number defines the Regional drainage basin and is the first 2 digits of the 13-digit drainage basin identification number (BASIN_NO). The first digit corresponds to the Major basin number (MBAS_NO). All Regional basins in the same Major basin have the same first digit. A Regional drainage basin number ending in "0" defines the greater main-stem basin for the corresponding Major drainage basin. For example, Regional basin 40 is the main-stem basin for Major basin 4. These main-stem Regional basins are usually named after the corresponding Major basin.
Alias: RBAS_NO Type: SmallInteger Width: 2 Precision: 5 Scale: 0Output width: 2
Attribute domain values
ValueDefinition
10
Pawcatuck Main Stem
11
Wood
20
Southeast Shoreline
21
Southeast Eastern Complex
22
Southeast Western Complex
30
Thames Main Stem
31
Willimantic
32
Natchaug
33
French
34
Fivemile
35
Moosup
36
Pachaug
37
Quinebaug
38
Shetucket
39
Yantic
40
Connecticut Main Stem
41
Stony Brook
42
Scantic
43
Farmington
44
Park
45
Hockanum
46
Mattabesset
47
Salmon
48
Eightmile
50
South Central Shoreline
51
South Central Eastern Complex
52
Quinnipiac
53
South Central Western Complex
60
Housatonic Main Stem
61
Blackberry
62
Hollenbeck
63
Tenmile
64
Candlewood
65
Aspetuck
66
Still
67
Shepaug
68
Pomperaug
69
Naugatuck
70
Southwest Shoreline
71
Southwest Eastern
72
Saugatuck
73
Norwalk
74
Southwest Western Complex
80
Hudson Main Stem
81
Croton
Attribute definition source:
State of Connecticut, Department of Environmental Protection
REGIONAL
Definition:
Regional Drainage Basin Name - Text values that correspond to numeric RBAS_NO attribute values. REGIONAL is the English language equivalent of (decodes) the RBAS_NO field.
Alias: REGIONAL Type: String Width: 30 Precision: 0 Scale: 0Output width: 30
Attribute values: See Enumerated Domain Value Definitions for RBAS_NO attribute.
Attribute definition source:
State of Connecticut, Department of Environmental Protection
MBAS_NO
Definition:
Major Drainage Basin Number - This number defines the major drainage basin and is the first digit of the 13-digit drainage basin identification number (BASIN_NO). There are 8 Major basins.
Alias: MBAS_NO Type: SmallInteger Width: 2 Precision: 5 Scale: 0Output width: 1
Attribute domain values
ValueDefinition
1
Pawcatuck
2
Southeast Coast
3
Thames
4
Connecticut
5
South Central Coast
6
Housatonic
7
Southwest Coast
8
Hudson
Attribute definition source:
State of Connecticut, Department of Environmental Protection
MAJOR
Definition:
Major Drainage Basin Name - Text values that correspond to numeric MBAS_NO attribute values. MAJOR is the English language equivalent of (decodes) the MBAS_NO field.
Alias: MAJOR Type: String Width: 20 Precision: 0 Scale: 0Output width: 20
Attribute values: See Enumerated Domain Value Definitions for MBAS_NO attribute.
Attribute definition source:
State of Connecticut, Department of Environmental Protection
TOWN_NO
Definition:
Town Number - ID number for the Connecticut Town (municipality), based on the Town Codes issued by the State of Connecticut, Office of the State Controller, which range from 1 to 169.
Alias: TOWN_NO Type: SmallInteger Width: 2 Precision: 5 Scale: 0Output width: 3
Attribute values: Numeric value ranging from 1 to 169.
Attribute definition source:
State of Connecticut, Office of the State Controller
TOWN
Definition:
Town Name - Text values that correspond to numeric TOWN_NO attribute values. TOWN is the English language equivalent of (decodes) the TOWN_NO field.
Alias: TOWN Type: String Width: 16 Precision: 0 Scale: 0Output width: 16
Attribute values: Text value (town name).
Attribute definition source:
State of Connecticut, Office of the State Controller
ACREAGE
Definition:
Calculated area of polygon feature in acres. Note, ACREAGE values are not automatically updated after modifying feature geometry (shape). Values must be recalculated after features are edited, simplified, generalized, clipped, dissolved, etc.
Alias: ACREAGE Type: Double Width: 8 Precision: 38 Scale: 8Output width: 12
Attribute values: Numeric value
Attribute definition source:
State of Connecticut, Department of Environmental Protection
AREA_SQMI
Definition:
Calculated area of polygon feature in square miles. Note, AREA_SQMI values are not automatically updated after modifying feature geometry (shape). Values must be recalculated after features are edited, simplified, generalized, clipped, dissolved, etc.
Alias: AREA_SQMI Type: Double Width: 8 Precision: 38 Scale: 8Output width: 12
Attribute values: Numeric value
Attribute definition source:
State of Connecticut, Department of Environmental Protection
SHAPE.area
Alias: SHAPE.area Type: Double Width: 0 Precision: 0 Scale: 0
SHAPE.len
Alias: SHAPE.len Type: Double Width: 0 Precision: 0 Scale: 0
ESRI Feature Description
Description of spatial objects in the data using the Environmental Systems Research Institute (ESRI) terminology.
Environmental Systems Research Institute (ESRI) terms
depgis.DEP.SUBREGIONAL_BASIN_TOWN_INTERSCT
ESRI feature type: Simple
Geometry type: Polygon
Topology: FALSE
Feature count: 2099
Spatial index: TRUE
Linear referencing: FALSE
SDTS Feature Description
Description of point and vector spatial objects in the data using the Spatial Data Transfer Standards (SDTS) terminology.
Spatial data transfer standard (SDTS) terms
depgis.DEP.SUBREGIONAL_BASIN_TOWN_INTERSCT
Type: G-polygon
Count: 2099
+ Data Quality and Accuracy Information
General
Information about the fidelity of relationships, data quality and accuracy tests, omissions, selection criteria, generalization, and definitions used to derive the data.
Logical consistency report:
Polygon features conform to the following topological rules. Polygons are single part. There are no duplicate polygons. Polygons do not self overlap. Polygons do not overlap other polygons. Lines are single part. Line features conform to the following topological rules. There are no duplicate lines. Lines do not self overlap. Lines do not overlap other lines. Lines intersect only at nodes, and nodes anchor the ends of all lines. Lines do not overshoot or undershoot other lines they are supposed to meet and intersect. In general, there are no duplicate features, unresolved intersections, overshooting lines, open polygons, sliver polygons, or unlabeled (unattributed) polygons. The tests of logical consistency were performed by the State of Connecticut using ESRI ArcInfo software to maintain feature topology in ArcInfo coverage format. The data is topologically clean. The ArcInfo Clean function was repeatedly used following edits to verify topology and enforce a minimum distance between vertices of 4 feet (fuzzy tolerance) and a minimum allowed overshoot length of 0 feet (dangle length).
Completeness report:
The data reflects the content of the data source, which is a set of 1:24,000 scale mylar sheets used to compile and publish the 1:125,000-scale Drainage Basins in Connecticut Map, McElroy, 1982. All major, regional, subregional, local and smaller basin divides were digitized from these 1:24,000-scale mylar compilation sheets. This data is not updated.
Attribute Accuracy
Accuracy of the identification of data entities, features and assignment of attribute values.
Attribute accuracy report:
The primary data source for basin information in the Connecticut Subregional Drainage Basin Town Intersect feature class is the Connecticut Drainage Basins layer. The Connecticut Drainage Basins layer retains the feature types and information identified on the 1:24,000-scale compilation sheets for the Natural Drainage Basins in Connecticut map, McElroy, 1981. All attributes have valid values. Values are within defined domains. There are no duplicate LBASIN_NO values except where expected (see definition of LBASIN_NO attribute).

The SBASIN_NO is derived from the first 4-digits of BASIN_NO so the accuracy of the SBASIN_NO is dependent on that for the BASIN_NO. For polygon features, the accuracy test for the BASIN_NO attribute values was conducted by visually comparing the basin number information depicted on the source Mylar overlays with 1:24,000-scale check plots or interactive displays of the digital data on a computer graphic system. These check plot maps and computer displays labeled polygon features with BASIN_NO values and differentiated line features based on DBARC_COD values for comparison with the original source Mylars. Subsequently, four additional fields (MBAS_NO, RBAS_NO, SBAS_NO, LBAS_NO) were added and populated based on the first, first 2, first 4, and first 7 columns of the BASIN_NO attribute. The MAJOR, REGIONAL, and SUBREGION attributes store drainage basin names based on MBAS_NO, RBAS_NO, SBAS_NO values, respectively. Basin names were attributed by joining basin name lookup tables to the polygon features base on MBAS_NO, RBAS_NO, SBAS_NO key values and populating the corresponding fields. These basin names are from the Natural Drainage Basins in Connecticut map, McElroy, 1981. The AREA_SQMI (area in square miles) and ACREAGE (area in acres) field were automatically calculated for each polygon feature based on computer generated feature area in square feet.

The primary data source for the town attribute information is the Connecticut Town Poly feature class. Refer to this feature class metadata for town number and name attribute accuracy report information.
Positional Accuracy
Accuracy of the positional aspects of the data.
Horizontal accuracy report:
The horizontal positional accuracy of this data complies with the United States National Map Accuracy Standards for 1:24,000 scale maps. According to this standard, not more than 10 percent of the locations tested are to be in error by more than 1/50 inch (40 feet) measured on the publication scale of a USGS 7.5 minute topographic quadrangle map.

Drainage basin boundaries were interpolated from 10 FT elevation contours and surface water body (hydrography) information published on a set of USGS 1:24,000-scale, 7.5-minute topographic quadrangle maps that cover the State of Connecticut. Natural drainage basin boundaries were manually delineated by interpolating elevation and water body information found on topographic quadrangle maps published by the USGS between 1962 and 1984.
+ Data Source and Process Information
Data Sources
Information about the source data used to construct or derive the data.
Data source information
Source 1 - Source Materials
Title: drainage basin compilation sheets
Originators: State of Connecticut, Department of Environmental Protection
Publication date: Unpublished Material
Data type: stable base mylar
Map scale denominator: 24000
Media: stable-base material
Source contribution:
Basins compiled on 1:24,000-scale 7.5 minute USGS quadrangle area mylar overlays.
Source 2 - Drainage Basins
Title: Connecticut Drainage Basins
Originators: State of Connecticut, Department of Environmental Protection
Publisher: State of Connecticut, Department of Environmental Protection
Publication place: Hartford, Connecticut USA
Publication date: 1988
Edition: 2006
Data type: vector digital data
Data location: http://www.ct.gov/deep
Other citation details:
The State of Connecticut, Department of Environmental Protection is the collector of the data (compiler), the creator and maintainer of the data layer (editor), and producer (publisher) of this information for use. Data compiled and digitized from the 1:24,000-scale compilation sheets for the 1:125,000-scale Natural Drainage Basins in Connecticut Map, McElroy, 1981. The 2006 Edition includes the same basin features originally published in 1988 with some minor corrections and improvements made to feature attribute information. Previously undetected errors have been corrected and are included in this 2006 edition. This data is not updated. Source map scale is 1:24,000.
Map scale denominator: 24000
Media: disc
Source contribution:
Connecticut Drainage Basins is in ArcInfo Coverage format having both polygon and line features. The name of the ArcInfo Coverage is BASIN.
Date: 1988
Currentness reference:
publication date
Source 3 - Subregional Drainage Basins
Title: Connecticut Subregional Drainage Basins
Originators: State of Connecticut, Department of Environmental Protection
Publisher: State of Connecticut, Department of Environmental Protection
Publication place: Hartford, Connecticut USA
Publication date: 1988
Edition: 2006
Data type: vector digital data
Data location: http://www.ct.gov/deep
Other citation details:
The State of Connecticut, Department of Environmental Protection is the collector of the data (compiler), the creator and maintainer of the data layer (editor), and producer (publisher) of this information for use. Data compiled and digitized from the 1:24,000-scale compilation sheets for the 1:125,000-scale Natural Drainage Basins in Connecticut Map, McElroy, 1981. The 2006 Edition includes the same basin features originally published in 1988 with some minor corrections and improvements made to feature attribute information. Previously undetected errors have been corrected and are included in this 2006 edition. This data is not updated. Source map scale is 1:24,000.
Map scale denominator: 24000
Media: disc
Source contribution:
Connecticut Subregional Drainage Basins is in ArcInfo Coverage format having both polygon and line features. The name of the ArcInfo Coverage is SBASIN. These polygon and line feature data were subsequently converted to geodatabase feature format and named SUBREGIONAL_BASIN_POLY and SUBREGIONAL_BASIN_LINE, respectively.
Date: 1988
Currentness reference:
publication date
Source 4 - Connecticut State Poly
Title: Connecticut State Polygon
Originators: State of Connecticut, Department of Environmental Protection (data editor and publisher)
Publisher: State of Connecticut, Department of Environmental Protection
Publication place: Hartford, Connecticut USA
Publication date: 19940101
Edition: 2005
Data type: vector digital data
Data location: http://www.ct.gov/deep
Map scale denominator: 24000
Media: disc
Source contribution:
A polygon feature-based layer that depicts the geographic area for the State of Connecticut as one polygon feature. Connecticut State Poly is in Geodatabase Feature Class format.
Beginning date: 1969
Ending date: 1984
Currentness reference:
publication date
Source 5 - Subregional Drainage Basins for Clipping
Title: Connecticut Subregional Drainage Basins for Clipping
Originators: State of Connecticut, Department of Environmental Protection
Publisher: State of Connecticut, Department of Environmental Protection
Publication place: Hartford, Connecticut USA
Publication date: 2006
Data type: vector digital data
Data location: http://www.ct.gov/deep
Other citation details:
The State of Connecticut, Department of Environmental Protection is the collector of the data (compiler), the creator and maintainer of the data layer (editor), and producer (publisher) of this information for use. This data is not updated. Source map scale is 1:24,000.
Map scale denominator: 24000
Media: disc
Source contribution:
Connecticut Subregional Drainage Basins for Clipping originated from the Connecticut Subregional Drainage Basins Polygon feature class (SUBREGIONAL_BASIN_POLY)
Date: 2005
Currentness reference:
publication date
Source 6 - Connecticut Town Poly
Title: Connecticut Town Polygon
Originators: State of Connecticut, Department of Environmental Protection (data collector, editor and publisher)
U.S. Geological Survey, National Mapping Program (data compiler)
Publisher: State of Connecticut, Department of Environmental Protection
Publication place: Hartford, Connecticut, USA
Publication date: 19940101
Edition: 2005
Data type: vector digital data
Data location: http://www.ct.gov/deep
Other citation details:
The USGS is the collector of the data (compiler). The State of Connecticut, Department of Environmental Protection is the creator and maintainer of the data layer (editor) and producer (publisher) of this information for use. The 2005 Edition essentially includes the same set of geographic features published in 1994. However, the 2005 Edition differs from information published in 1994 primarily as a result of minor corrections and improvements to feature geometry and feature attribute information. Some feature attribute information (data fields) have been slightly modified and made easier to use. This layer includes information that is relatively static and does not change over time. Data is not updated. Data compiled at 1:24,000 scale.
Map scale denominator: 24000
Media: disk
Source contribution:
A polygon feature-based layer that defines the geographic areas for the State of Connecticut and its counties and towns (municipalities) as depicted on the U.S. Geological Survey (USGS) 7.5 minute topographic quadrangle maps for the State of Connecticut. This layer only includes information for Connecticut. Connecticut_Town_Poly is in Geodatabase Feature Class format.
Date: 1969 Time: 1984
Currentness reference:
Publication dates of the USGS 7.5 minute topographic quadrangle maps for the State of Connecticut through 1984.
Source 7 - Subregional Dranage Basin Town Intersect
Title: Connecticut Subregional Drainage Basin Town Intersect
Originators: State of Connecticut, Department of Environmental Protection (data compiler, editor and publisher)
Publisher: State of Connecticut
Publication place: Hartford, Connecticut, USA
Publication date: 1988
Edition: 2006
Data type: vector digital data
Data location: http://www.ct.gov/deep
Other citation details:
The State of Connecticut, Department of Environmental Protection is the collector of the data (compiler), the creator and maintainer of the data layer (editor), and producer (publisher) of this information for use. This data is not updated. Source map scale is 1:24,000.
Map scale denominator: 24000
Media: disk
Date: 1988
Currentness reference:
publication date
Process Steps
Information about events, parameters, tolerances and techniques applied to construct or derive the data.
Process step information
Process Step 1
Process description:
Feature digitizing and attribution (digitizing tablet method) - Using ESRI ArcInfo software, basin boundary line features were digitized by registering the individual compilation sheets to the digitizing tablet and using the crosshairs of the digitizer's mouse to manually capture the geometry (location) of features drafted on the map. The corners of the USGS 7.5 minute topographic quadrangle maps are used as registration points and are depicted on the source map. The source map was registered to the digitizing tablet by digitizing (entering) the locations of four quadrangle corner registration points shown on the map. ArcInfo software compared the values of the digitized coordinates with the actual (true) values for the quadrangle corner (tic) features. The Root Mean Square (RMS) error generated by the ArcInfo software indicated the amount of error involved in transforming coordinates from the registered map to the digital layer. RMS errors higher than 0.004 were not acceptable and required re-registering the source map by digitizing the tic locations again. With a correct registration, basins boundaries features were manually digitized off the source map. Where necessary, additional minor corrections (edits) to feature geometry were manually digitized on the screen (heads-up digitizing) at display scales greater than 1:24,000.  Feature location and attribute accuracy was visually checked and inspected by symbolizing and labeling features according to attribute value on the computer screen and on hard copy paper maps, and comparing this information to the orginal source data. These check plot maps were printed at the same scale as the source maps in order to visually inspect digitizing quality and the assignment of attribute values. 

Individual quadrangle level basin boundary coverages were appended and edgematched along quadrangle boundaries to create a statewide layer in ArcInfo Coverage format having both polygon and line features. Polygon label points were created and assigned BASIN_NO values that uniquely identified each polygon feature. Most other related polygon and line feature attributes were assigned through automated procedures based on the format and hierarchical nature of the BASIN_NO value. Four additional fields (MBAS_NO, RBAS_NO, SBAS_NO, LBAS_NO) were added and populated based on the first, first 2, first 4, and first 7 columns of the BASIN_NO attribute. The MAJOR, REGIONAL, and SUBREGION attributes store drainage basin names based on MBAS_NO, RBAS_NO, SBAS_NO values, respectively. Basin names were attributed by joining basin name lookup tables to the polygon features base on MBAS_NO, RBAS_NO, SBAS_NO key values and populating the corresponding fields. These basin names are from the Natural Drainage Basins in Connecticut map, McElroy, 1981. The AREA_SQMI (area in square miles) and ACREAGE (area in acres) field were automatically calculated for each polygon feature based on computer generated feature area in square feet. The GAZRECNO attribute was manually assigned to each basin polygon feature.

For line features, the DBARC_COD attribute was populated through a combination of automated and manual processes that compared the BASIN_NO attribute value of the polygon on each side of the line. For example, if the two polygons are in different major basins (MBAS_NO on the left <> MBAS_NO on the right), then the line feature represents a Major basin drainage divide and is assigned a DBARC_COD value of 1. If the left and right polygons are in the same Major basins but in different regional basins (RBAS_NO on the left <> RBAS_NO on the right), the line feature is a Regional basin drainage divide and is assigned a DBARC_COD value of 2, and so on. DIVIDE is the English language equivalent of (decodes) the DBARC_COD attribute value and was populated by joining a lookup table to the line features instead of manually attributing these values for each line feature. AV_LEGEND and IMS_LEGEND values were also attributed through table joins.
Organization: State of Connecticut, Department of Environmental Protection
Person: Tom Nosal
Phone: 806-424-3540
Fax: 860-424-4058
Hours of service: Mondy to Friday, 8:30 to 16:30 Eastern Standard Time
Address type: mailing and physical address
Address:
79 Elm Street
City: Hartford
State or Province: Connecticut
Postal code: 06106
Country: USA
Process date: 1988
Process software and version: ArcInfo 5, 6
Data Source used
Source 1 - Source Materials
Title: drainage basin compilation sheets
Originators: State of Connecticut, Department of Environmental Protection
Publication date: Unpublished Material
Data type: stable base mylar
Map scale denominator: 24000
Media: stable-base material
Source contribution:
Basins compiled on 1:24,000-scale 7.5 minute USGS quadrangle area mylar overlays.
Data Source produced
Source 2 - Drainage Basins
Title: Connecticut Drainage Basins
Originators: State of Connecticut, Department of Environmental Protection
Publisher: State of Connecticut, Department of Environmental Protection
Publication place: Hartford, Connecticut USA
Publication date: 1988
Edition: 2006
Data type: vector digital data
Data location: http://www.ct.gov/deep
Other citation details:
The State of Connecticut, Department of Environmental Protection is the collector of the data (compiler), the creator and maintainer of the data layer (editor), and producer (publisher) of this information for use. Data compiled and digitized from the 1:24,000-scale compilation sheets for the 1:125,000-scale Natural Drainage Basins in Connecticut Map, McElroy, 1981. The 2006 Edition includes the same basin features originally published in 1988 with some minor corrections and improvements made to feature attribute information. Previously undetected errors have been corrected and are included in this 2006 edition. This data is not updated. Source map scale is 1:24,000.
Map scale denominator: 24000
Media: disc
Source contribution:
Connecticut Drainage Basins is in ArcInfo Coverage format having both polygon and line features. The name of the ArcInfo Coverage is BASIN.
Date: 1988
Currentness reference:
publication date
Process Step 2
Process description:
Create Subregional Drainage Basins -  Using ArcInfo Workstation software, removed the BASIN_NO and LBAS_NO polygon feature attributes, calculated the ACREAGE and AREA_SQMI polygon attributes to zero, and dissolved polygon features on the remaining SBAS_NO, RBAS_NO, MBAS_NO, SUBREGIONAL, REGIONAL, and MAJOR attribute values to create subregional drainage basin polygon features. Using the ArcInfo Dissolve command, this step merged the smaller basin polygons into the larger subregional basin polygon features. Line features were preserved as part of the dissolve process and were merged using the ArcInfo Unsplit command afterwards. The ACREAGE and AREA_SQMI attributes were recalculated based on the new feature geometry, and ArcInfo coveage topology was re-established with the Build command.
Organization: State of Connecticut, Department of Environmental Protection
Person: Tom Nosal, Howie Sternberg
Phone: 860-424-3540
Fax: 860-424-4058
Hours of service: Mondy to Friday, 8:30 to 16:30 Eastern Standard Time
Address type: mailing and physical address
Address:
79 Elm Street
City: Hartford
State or Province: Connecticut
Postal code: 06106
Country: USA
Process date: 1988
Process software and version: ArcInfo 6
Data Source used
Source 2 - Drainage Basins
Title: Connecticut Drainage Basins
Originators: State of Connecticut, Department of Environmental Protection
Publisher: State of Connecticut, Department of Environmental Protection
Publication place: Hartford, Connecticut USA
Publication date: 1988
Edition: 2006
Data type: vector digital data
Data location: http://www.ct.gov/deep
Other citation details:
The State of Connecticut, Department of Environmental Protection is the collector of the data (compiler), the creator and maintainer of the data layer (editor), and producer (publisher) of this information for use. Data compiled and digitized from the 1:24,000-scale compilation sheets for the 1:125,000-scale Natural Drainage Basins in Connecticut Map, McElroy, 1981. The 2006 Edition includes the same basin features originally published in 1988 with some minor corrections and improvements made to feature attribute information. Previously undetected errors have been corrected and are included in this 2006 edition. This data is not updated. Source map scale is 1:24,000.
Map scale denominator: 24000
Media: disc
Source contribution:
Connecticut Drainage Basins is in ArcInfo Coverage format having both polygon and line features. The name of the ArcInfo Coverage is BASIN.
Date: 1988
Currentness reference:
publication date
Data Source produced
Source 3 - Subregional Drainage Basins
Title: Connecticut Subregional Drainage Basins
Originators: State of Connecticut, Department of Environmental Protection
Publisher: State of Connecticut, Department of Environmental Protection
Publication place: Hartford, Connecticut USA
Publication date: 1988
Edition: 2006
Data type: vector digital data
Data location: http://www.ct.gov/deep
Other citation details:
The State of Connecticut, Department of Environmental Protection is the collector of the data (compiler), the creator and maintainer of the data layer (editor), and producer (publisher) of this information for use. Data compiled and digitized from the 1:24,000-scale compilation sheets for the 1:125,000-scale Natural Drainage Basins in Connecticut Map, McElroy, 1981. The 2006 Edition includes the same basin features originally published in 1988 with some minor corrections and improvements made to feature attribute information. Previously undetected errors have been corrected and are included in this 2006 edition. This data is not updated. Source map scale is 1:24,000.
Map scale denominator: 24000
Media: disc
Source contribution:
Connecticut Subregional Drainage Basins is in ArcInfo Coverage format having both polygon and line features. The name of the ArcInfo Coverage is SBASIN. These polygon and line feature data were subsequently converted to geodatabase feature format and named SUBREGIONAL_BASIN_POLY and SUBREGIONAL_BASIN_LINE, respectively.
Date: 1988
Currentness reference:
publication date
Process Step 3
Process description:
Subregional Drainage Basin Polygon features along the Connecticut coastline were enlarged to extend beyond the Connecticut shoreline into Long Island Sound to the boundary between the State of Connectict and New York in Long Island Sound. This feature class is designed to be used as a Clip feature class to clip other point line and polygon features to the subregional drainage basin areas. This feature class differs from the Subregional Drainage Basin Polygon feature class in that features along the Connecticut coastline were enlarged to extend beyond the Connecticut shoreline to the boundary between the State of Connectict and New York in Long Island Sound. These modifications apply to the coastal subregional basins 2000, 5000, and 7000 where the basin boundary coresponding to the Connecticut shoreline was replaced with the CT-NY state boundary in Long Island Sounce. These basin areas were enlarged to ensure Clip input features located along and near both sides of the shoreline are included in the Clip output feature class and associated with a subregional coastal basin (e.g. 2000, 5000, or 7000). Input features that should be in these coastal basins may not be in the resulting Clip output feature class unless the Connecticut Subregional Drainage Basins for Clipping is used as the Clip feature class. Using the unmodified, original Connecticut Subregional Drainage Basin Polygon feature class as the Clip feature class may produce different results for basins 2000, 5000, and 7000. The data source for the CT-NY state boundary is the Connecticut State Poly feature class. Both data sources used - Subregional Drainage Basins and Connecticut State Poly - have a 1:24,000-scale source map scale.
Organization: State of Connecticut, Department of Environmental Protection
Person: Howie Sternberg
Phone: 860-424-3540
Fax: 860-424-4058
Hours of service: Mondy to Friday, 8:30 to 16:30 Eastern Standard Time
Address type: mailing and physical address
Address:
79 Elm Street
City: Hartford
State or Province: Connecticut
Postal code: 06106
Country: USA
Process date: 2006
Process software and version: ArcGIS 9.2
Data Source used
Source 3 - Subregional Drainage Basins
Title: Connecticut Subregional Drainage Basins
Originators: State of Connecticut, Department of Environmental Protection
Publisher: State of Connecticut, Department of Environmental Protection
Publication place: Hartford, Connecticut USA
Publication date: 1988
Edition: 2006
Data type: vector digital data
Data location: http://www.ct.gov/deep
Other citation details:
The State of Connecticut, Department of Environmental Protection is the collector of the data (compiler), the creator and maintainer of the data layer (editor), and producer (publisher) of this information for use. Data compiled and digitized from the 1:24,000-scale compilation sheets for the 1:125,000-scale Natural Drainage Basins in Connecticut Map, McElroy, 1981. The 2006 Edition includes the same basin features originally published in 1988 with some minor corrections and improvements made to feature attribute information. Previously undetected errors have been corrected and are included in this 2006 edition. This data is not updated. Source map scale is 1:24,000.
Map scale denominator: 24000
Media: disc
Source contribution:
Connecticut Subregional Drainage Basins is in ArcInfo Coverage format having both polygon and line features. The name of the ArcInfo Coverage is SBASIN. These polygon and line feature data were subsequently converted to geodatabase feature format and named SUBREGIONAL_BASIN_POLY and SUBREGIONAL_BASIN_LINE, respectively.
Date: 1988
Currentness reference:
publication date
Source 4 - Connecticut State Poly
Title: Connecticut State Polygon
Originators: State of Connecticut, Department of Environmental Protection (data editor and publisher)
Publisher: State of Connecticut, Department of Environmental Protection
Publication place: Hartford, Connecticut USA
Publication date: 19940101
Edition: 2005
Data type: vector digital data
Data location: http://www.ct.gov/deep
Map scale denominator: 24000
Media: disc
Source contribution:
A polygon feature-based layer that depicts the geographic area for the State of Connecticut as one polygon feature. Connecticut State Poly is in Geodatabase Feature Class format.
Beginning date: 1969
Ending date: 1984
Currentness reference:
publication date
Data Source produced
Source 5 - Subregional Drainage Basins for Clipping
Title: Connecticut Subregional Drainage Basins for Clipping
Originators: State of Connecticut, Department of Environmental Protection
Publisher: State of Connecticut, Department of Environmental Protection
Publication place: Hartford, Connecticut USA
Publication date: 2006
Data type: vector digital data
Data location: http://www.ct.gov/deep
Other citation details:
The State of Connecticut, Department of Environmental Protection is the collector of the data (compiler), the creator and maintainer of the data layer (editor), and producer (publisher) of this information for use. This data is not updated. Source map scale is 1:24,000.
Map scale denominator: 24000
Media: disc
Source contribution:
Connecticut Subregional Drainage Basins for Clipping originated from the Connecticut Subregional Drainage Basins Polygon feature class (SUBREGIONAL_BASIN_POLY)
Date: 2005
Currentness reference:
publication date
Process Step 4
Process description:
Create Subregional Drainage Basin Town Intersect -  Using a copy of the Connecticut Town Poly feature class, deleted all polygon attributes with the exception of town number (TOWN_NO) and town name (TOWN). Applied the Intersect geoprocessing command to overlay the modified town feature class with Subregional Drainage Basins for Clipping to create Connecticut Subregional Basin Town Intersect feature class, which only included polygon features where the two input feature classes intersected and overlapped each other. The ACREAGE and AREA_SQMI attributes in Connecticut Subregional Basin Town Intersect were recalculated based on the new feature geometry. The total geographic area covered by all polygon features is 4,967.56 square miles. 
Organization: State of Connecticut, Department of Enviromental Protection
Person: Howie Sternberg
Phone: 860-424-3540
Fax: 860-424-4058
Email: dep.gisdata@po.sate.ct.us
Hours of service: Monday to Friday, 08:30 to 16:30 Eastern Standard Time
Address type: mailing and physical address
Address:
79 Elm Street
City: Hartford
State or Province: Connecticut
Postal code: 06106-5127
Country: USA
Process date: 2006
Process software and version: ArcGIS 9.2
Data Source used
Source 5 - Subregional Drainage Basins for Clipping
Title: Connecticut Subregional Drainage Basins for Clipping
Originators: State of Connecticut, Department of Environmental Protection
Publisher: State of Connecticut, Department of Environmental Protection
Publication place: Hartford, Connecticut USA
Publication date: 2006
Data type: vector digital data
Data location: http://www.ct.gov/deep
Other citation details:
The State of Connecticut, Department of Environmental Protection is the collector of the data (compiler), the creator and maintainer of the data layer (editor), and producer (publisher) of this information for use. This data is not updated. Source map scale is 1:24,000.
Map scale denominator: 24000
Media: disc
Source contribution:
Connecticut Subregional Drainage Basins for Clipping originated from the Connecticut Subregional Drainage Basins Polygon feature class (SUBREGIONAL_BASIN_POLY)
Date: 2005
Currentness reference:
publication date
Source 6 - Connecticut Town Poly
Title: Connecticut Town Polygon
Originators: State of Connecticut, Department of Environmental Protection (data collector, editor and publisher)
U.S. Geological Survey, National Mapping Program (data compiler)
Publisher: State of Connecticut, Department of Environmental Protection
Publication place: Hartford, Connecticut, USA
Publication date: 19940101
Edition: 2005
Data type: vector digital data
Data location: http://www.ct.gov/deep
Other citation details:
The USGS is the collector of the data (compiler). The State of Connecticut, Department of Environmental Protection is the creator and maintainer of the data layer (editor) and producer (publisher) of this information for use. The 2005 Edition essentially includes the same set of geographic features published in 1994. However, the 2005 Edition differs from information published in 1994 primarily as a result of minor corrections and improvements to feature geometry and feature attribute information. Some feature attribute information (data fields) have been slightly modified and made easier to use. This layer includes information that is relatively static and does not change over time. Data is not updated. Data compiled at 1:24,000 scale.
Map scale denominator: 24000
Media: disk
Source contribution:
A polygon feature-based layer that defines the geographic areas for the State of Connecticut and its counties and towns (municipalities) as depicted on the U.S. Geological Survey (USGS) 7.5 minute topographic quadrangle maps for the State of Connecticut. This layer only includes information for Connecticut. Connecticut_Town_Poly is in Geodatabase Feature Class format.
Date: 1969 Time: 1984
Currentness reference:
Publication dates of the USGS 7.5 minute topographic quadrangle maps for the State of Connecticut through 1984.
Data Source produced
Source 7 - Subregional Dranage Basin Town Intersect
Title: Connecticut Subregional Drainage Basin Town Intersect
Originators: State of Connecticut, Department of Environmental Protection (data compiler, editor and publisher)
Publisher: State of Connecticut
Publication place: Hartford, Connecticut, USA
Publication date: 1988
Edition: 2006
Data type: vector digital data
Data location: http://www.ct.gov/deep
Other citation details:
The State of Connecticut, Department of Environmental Protection is the collector of the data (compiler), the creator and maintainer of the data layer (editor), and producer (publisher) of this information for use. This data is not updated. Source map scale is 1:24,000.
Map scale denominator: 24000
Media: disk
Date: 1988
Currentness reference:
publication date
ESRI geoprocessing history
Description of ESRI geoprocessing commands, settings, and tolerances applied to the data.
ESRI geoprocessing command information
1 Process
Date: 20061207 Time: 102240
Tool location: C:\Program Files\ArcGIS\ArcToolbox\Toolboxes\Data Management Tools.tbx\CopyFeatures
Command issued: CopyFeatures F:\GeoData\Basin\Subregional_Basin_Town_Intersect.shp "F:\GeoData\Basin\New Personal Geodatabase.mdb\Subregional_Basin_Town_Intersect" # 10000 0 0
2 Process
Date: 20061207 Time: 102457
Tool location: C:\Program Files\ArcGIS\ArcToolbox\Toolboxes\Data Management Tools.tbx\CopyFeatures
Command issued: CopyFeatures "F:\GeoData\Basin\New Personal Geodatabase.mdb\Subregional_Basin_Town_Intersect" "Database Connections\depdbs11@dep.sde\depgis.DEP.Subregional_Basin_Town_Intersect" DEPVECTORSTATIC 10000 0 0
3 CopyFeatures_80
Date: 20081215 Time: 162931
Tool location: C:\Program Files\ArcGIS\ArcToolbox\Toolboxes\Data Management Tools.tbx\CopyFeatures
Command issued: CopyFeatures "Database Connections\10.18.8.94.depgis@DEP.sde\depgis.DEP.SUBREGIONAL_BASIN_TOWN_INTERSCT" "Database Connections\062174-svr.depgis@DEP.sde\depgis.DEP.SUBREGIONAL_BASIN_TOWN_INTERSCT" DEPFEATURESTATIC 0 0 0
4 Process
Date: 20090915 Time: 145947
Tool location: C:\Program Files\ArcGIS\ArcToolbox\Toolboxes\Data Management Tools.tbx\CopyFeatures
Command issued: CopyFeatures "Database Connections\10.18.8.60.depgis@DEP_dc.sde\depgis.DEP.SUBREGIONAL_BASIN_TOWN_INTERSCT" Y:\GIS_Warehouse\public_data\Geodatabase_format\Hydrography\Watershed.gdb\SUBREGIONAL_BASIN_TOWN_INTERSCT # 0 0 0
+ Data Distribution Information
General
Description of the data known by the party from whom the data may be obtained, liability of party distributing data, and technical capabilities required to use the data.
Resource description:
Connecticut Subregional Drainage Basin Town Intersect
Distribution liability:
Although this data set  has been used by the State of Connecticut, Department of Environmental Protection, no warranty, expressed or implied, is made by the State of Connecticut, Department of Environmental Protection as to the accuracy of the data and or related materials.  The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the State of Connecticut, Department of Environmental Protection in the use of these data or related materials. The user assumes the entire risk related to the use of these data. Once the data is distributed to the user, modifications made to the data by the user should be noted in the metadata.
Technical prerequisites:
Geographic information sytem (GIS), computer-aided drawing or other mapping software is necessary to display, view and access the information.
Distribution Point of Contact
Contact information for the individual or organization distributing the data.
Organization: State of Connecticut, Department of Enviromental Protection
Phone: 860-424-3540
Fax: 860-424-4058
Email: dep.gisdata@ct.gov
Hours of service: Monday to Friday, 08:30 to 16:30 Eastern Standard Time
Address type: mailing and physical address
Address:
79 Elm Street
City: Hartford
State or Province: Connecticut
Postal code: 06106-5127
Country: USA
Standard Order Process
Common ways in which data may be obtained.
Digital form:
Format name: Shapefile, Feature Class
Format version number: ArcGIS
File decompression technique: Zip file
Digital transfer option:
Online option:
Computer information:
Network address:
Network resource name: http://www.ct.gov/deep
Fees: An online copy of the data may be accessed without charge.
Custom Order Process
Description of custom distribution services available.
Custom order process:
The data distributor does not provide custom GIS analysis or mapping services. Data is available in a standard format and may be converted to other formats, projections, coordinate systems, or selected for specific geographic regions by the party receiving the data.
+ Metadata Reference
Metadata Date
Dates associated with creating, updating and reviewing the metadata.
Last updated: 20120125
Language of metadata: en
Metadata Point of Contact
Contact information for the individual or organization responsible for the metadata information.
Organization: State of Connecticut, Department of Environmental Protection
Person: Howie Sternberg
Phone: 860-424-3540
Fax: 860-424-4058
Email: dep.gisdata@ct.gov
Hours of service: Monday to Friday, 08:30 to 16:30 Eastern Standard Time
Address type: mailing and physical address
Address:
79 Elm Street
City: Hartford
State or Province: Connecticut
Postal code: 06106-5127
Country: USA
Metadata Standards
Description of the metadata standard used to document the data and reference to any additional extended profiles to the standard used by the metadata producer.
Standard name: FGDC Content Standards for Digital Geospatial Metadata
Standard version: FGDC-STD-001-1998
Time convention: local time
Metadata profiles defining additonal information:
Profile: ESRI Metadata Profile
FGDC Plus Metadata Stylesheet
Stylesheet: FGDC Plus Stylesheet
File name: FGDC Plus.xsl
Version: 2.2
Description: This metadata is displayed using the FGDC Plus Stylesheet, which is an XSL template that can be used with ArcGIS software to display metadata. It displays metadata elements defined in the Content Standard for Digital Geospatial Metadata (CSDGM) - aka FGDC Standard, the ESRI Profile of CSDGM, the Biological Data Profile of CSDGM, and the Shoreline Data Profile of CSDGM. CSDGM is the US Federal Metadata standard. The Federal Geographic Data Committee originally adopted the CSDGM in 1994 and revised it in 1998. According to Executive Order 12096 all Federal agencies are ordered to use this standard to document geospatial data created as of January, 1995. The standard is often referred to as the FGDC Metadata Standard and has been implemented beyond the federal level with State and local governments adopting the metadata standard as well. The Biological Data Profile broadens the application of the CSDGM so that it is more easily applied to biological data that are not explicitly geographic (laboratory results, field notes, specimen collections, research reports) but can be associated with a geographic location. Includes taxonomical vocabulary. The Shoreline Data Profile addresses variability in the definition and mapping of shorelines by providing a standardized set of terms and data elements required to support metadata for shoreline and coastal data sets. The FGDC Plus Stylesheet includes the Dublin Core Metadata Element Set. It supports W3C DOM compatible browsers such as IE7, IE6, Netscape 7, and Mozilla Firefox. It is in the public domain and may be freely used, modified, and redistributed. It is provided "AS-IS" without warranty or technical support.
Instructions: On the top of the page, click on the title of the dataset to toggle opening and closing of all metadata content sections or click section links listed horizontally below the title to open individual sections. Click on a section name (e.g. Description) to open and close section content. Within a section, click on a item name (Status, Key Words, etc.) to open and close individual content items. By default, the Citation information within the Description section is always open for display.
Download: FGDC Plus Stylesheet is available from the ArcScripts downloads at www.esri.com.