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Impervious Cover by Watershed Basin
FGDC Metadata
DescriptionGraphicSpatialData StructureData QualityData SourceData DistributionMetadata
+ Resource Description
Citation
Information used to reference the data.
Title: Impervious Cover by Watershed Basin
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
Publisher: Center for Land Use Education and Research (CLEAR)
Publication date: 19880101
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. Basin delineation 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.  Source map scale is 1:24,000. Impervious cover calculations created in 2017 using 1-foot 2012 impervious cover data by the University of Connecticut, Center for Land use Educaiton and Research. 
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: 19810101
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:
Impervious Cover by Watershed Basins is based on the Connecticut Drainage Basins layer and is 1:24,000-scale, polygon feature data that define natural drainage areas in Connecticut and contain values for calculated impervious cover (2012) within each basin. Drainage basins have been clipped to the Connecticut state boundary. The features are small basin areas that average approximately 1 square mile in size and make up, in order of increasing size, the larger local, subregional, regional, and major drainage basin areas. Impervious Cover by Watershed Basins includes drainage areas for all Connecticut rivers, streams, brooks, lakes, reservoirs and ponds published on 1:24,000-scale 7.5 minute topographic quadrangle maps prepared by the USGS between 1969 and 1984. Data is compiled by the Connecticut Department of Environmental Protection (CT DEP) at 1:24,000 scale (1 inch = 2,000 feet). Basin delination information is not updated. Each basin area (polygon) feature is outlined by one or more major, regional, subregional, local, impoundment, or river reach boundary (line) feature. These data include 6853 basin areas (polygons), clipped to the Connecticut state boundary. Impervious cover for each basin area has been calculated from 1-foot impervious cover data (link to metadata). Basin area attributes for imperviousness included total impervious area (acres), percent impervious area, building impervious area (acres and percent), roads impervious area (acres and percent) and other impervious area (acres and percent). Basin area (polygon) attributes include major, regional, subregional, local, (full) basin number, and feature size in acres and square miles. The full basin number (BASIN_NO) uniquely identifies individual basins and is up to 13 characters in length. There are 6853 unique basin numbers. Examples include 6000-00-1+*, 4300-00-1+L1, and 6002-00-2-R1. The first digit (column 1) designates the major basin, the first two digits (columns 1-2) designate the regional basin, the first 4 digits (columns 1-4) designate the subregional basin, and the first seven digits (columns 1-7) designate the local basin. Note, there are slightly more basin polygon features than unique basin numbers primarily because a few water supply watershed boundaries split a basin into two polygon features at the location of a small dam or point of diversion along a stream. A unique value field (BasinNoU) has been added for the purposes of calculating impervious area. Connecticut Drainage Basins is the data source for other digital spatial data including the Connecticut Major Drainage Basins, Connecticut Regional Drainage Basins, Connecticut Subregional Drainage Basins, and Connecticut Local Drainage Basins.
Purpose:
The polygon features define the amount and type of impervious cover in contributing drainage areas for individual reservoirs, lakes, ponds and river and stream reaches in Connecticut. Impervious area based on 2012 aerial imagery has been used to calculate area and percent of impervious cover for each drainage basin. Drainage areas are hydrologic land units where precipitation is collected. Rain falling in a basin may take two courses. It may both run over the land and quickly enter surface watercourses, or it may soak into the ground moving through the earth until it surfaces at a wetland or stream. Use these basin data to identify where rainfall flows over land and downstream to a particular watercourse. Use these data to categorize and tabulate information such as amount of imperviousness according to drainage basin by identifying the basin number for individual reservoir, lake, pond, stream reach, or location of interest. Such information is useful for compliance with the State of Connecticut's General Permit for the Discharage of Stormwater from Small Municipal Separate Strom Sewer Systems (MS4). Due to the hierarchical nature of the basin numbering system, a database that records the 13-digit basin number for individual geographic locations of interest will support tabulations by major, regional, subregional or local basin as well as document the unique 13-digit basin number. To identify either all upstream basins draining to a particular location or all downstream basins flowing from a particular location, refer to the Gazetteer of Drainage Basin Areas of Connecticut, Nosal, 1977, CT DEP Water Resources Bulletin 45, for the hydrologic sequence, headwater to outfall, of drainage basins available at http://cteco.uconn.edu/docs/wrb/wrb45_gazetteer_of_drainage_areas_of_connecticut.pdf Not intended for maps printed at map scales greater or more detailed than 1:24,000 scale (1 inch = 2,000 feet.). Not intended for analysis with other digital data compiled at scales greater than or more detailed than 1:24,000 scale. Use these data with 1:24,000-scale hydrography data also available from the State of Connecticut, Department of Environmental Protection.
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.

University of Connecticut, Center for Land use Education and Research (CLEAR) clipped the basin boundaries to the state of Connecticut boundary and calculated all impervious area values. 
Point Of Contact
Contact information for the individual or organization that is knowledgeable about the data.
Organization: University of Connecticut
Person: Center for Land Use Education and Research (CLEAR)
Data Type
How the data are represented, formatted and maintained by the data producing organization.
Data type: vector digital data
Native dataset environment: Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.4.0.5524
Time Period of Data
Time period(s) for which the data corresponds to the currentness reference.
Date: 19880101
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: basin divide, subregional, impervious cover, watershed, major, regional, drainage area, local, drainage basin
Keyword thesaurus: None
Theme:
Keywords: inlandWaters, elevation, basin, watershed, impervious cover
Keyword thesaurus: ISO 19115 Topic Category
Place:
Keywords: Connecticut, CT, United States
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 printing this layer on a map: Basins - From the IC by Basins layer, compiled and published by CT DEEP/CT ECO. 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 Drainage Basins - Drainage Basin line features are symbolized by the Drainage Basins Divide (DIVIDE) attribute to illustrate the basin hierarchy.
Graphic Image

Browse graphic 2
Open - Detail view of Connecticut Drainage Basins - Drainage Basins polygon features are labeled with the 13-digit basin number. Drainage Basin line features are symbolized by the Drainage Basins Divide (DIVIDE) attribute to illustrate the basin hierarchy.
Graphic Image

Browse graphic 3
Open - Detail view of Impoundment Basins - The value for the Reach-Impoundment Identifier (column 11) for an impoundment basin is L (for lake) and is followed by the Reach-Impoundment Number (columns 12-13).
Graphic Image

Browse graphic 4
Open - Detail view of Stream Reach and Stream Order 1 Basins - The value for the Reach-Impoundment Identifier for a stream reach basin is R (for reach) and is followed the Reach-Impoundment Number (columns 12-13). Stream order (column 10) values of 1 denote a headwater basin with values greater than 1 denoting the complexity of the drainage basin morphology.
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.
Coordinate System Details
Map projection
Map projection name: NAD 1983 StatePlane Connecticut FIPS 0600 Feet
Standard parallel: 41.2
Standard parallel: 41.86666666666667
Longitude of central meridian: -72.75
Latitude of projection origin: 40.83333333333334
False easting: 999999.999996
False northing: 499999.999998
Planar Coordinate Information
Planar coordinate encoding method: coordinate pair
Coordinate representation:
Abscissa resolution: 0.000000026813284925708565
Ordinate resolution: 0.000000026813284925708565
Planar distance units: foot_us
Geodetic model
Horizontal datum name: D North American 1983
Ellipsoid name: GRS 1980
Semi-major axis: 6378137.0
Denominator of flattening ratio: 298.257222101
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 Unprojected coordinates (geographic)
BoundaryCoordinate
West-73.732873 (longitude)
East-71.781365 (longitude)
North42.052612 (latitude)
South40.984693 (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:
Drainage basin information is comprised of a set of polygon and line features that together describe different types of drainage basins and drainage basin divides. Part 1 - Drainage Basin Polygon Features Information encoded for drainage basin polygon features generally includes drainage basin number and name. Below is a brief explanation of the drainage basin identification number. Use the BASIN_NO attribute to uniquely identify drainage basins. The BASIN_NO is a unique number assigned to each polygon feature. However, in a few instances, two adjacent basin polygon features are assigned the same BASIN_NO when separated by a drainage basin line feature encoded as a Water diversion point divide (DBARC_COD = 10). 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). Part 2 - Drainage Basin Divide Line Features Information encoded for line features categorizes drainage basin divides (boundaries) for cartographic purposes. Use the AV_LEGEND or IMS_LEGEND attribute to classify and symbolize boundary lines on a map. The AV_LEGEND attribute classifies basin boundary features into the same categories as DBARC_COD and DIVIDE. It is included for convenience. Unlike the IMS_LEGEND attribute, it does not condense features into broader categories. When symbolizing drainage basins arc features on AV_LEGEND values, be sure to exclude features not intended to be shown on the map by using the following layer definition query: AV_LEGEND <> "No Show". The IMS_LEGEND attribute condenses the 9 drainage basin line feature types (DBARC_COD values) into 6 broader categories (Major, Regional, Subregional, Local, Shoreline, and No Show). When symbolizing drainage basins arc features on IMS_LEGEND values, be sure to exclude features not intended to be shown on the map by using the following layer definition query: IMS_LEGEND <> "No Show". Use the AREA_SQMI and ACREAGE attributes to determine drainage basin 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.
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 BasinsIC
Detailed descriptions of entity type, attributes, and attribute values for the data.
Description:
Drainage basin polygon features cover the geographic area of the State of Connecticut, plus the entire headwater upstream areas of all rivers and streams that drain into Connecticut from New York, Massachusetts, and Rhode Island, with the exception of the Connecticut River. The drainage basin area for the Connecticut River starts at the mouth of the Connecticut River and extends upstream into Massachusetts to just over the Connecticut-Massachusetts state boundary.
Source:
State of Connecticut, Department of Environmental Protection
Attributes
FID
Definition:
Internal feature number.
Attribute values: Sequential unique whole numbers that are automatically generated.
Attribute definition source:
Esri
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.
Attribute values: See Enumerated Domain Value Definitions for MBAS_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.
Attribute domain values
ValueDefinition
1
Pawcatuck
2
Southeast Coast
5
South Central Coast
7
Southwest Coast
4
Connecticut
6
Housatonic
8
Hudson
3
Thames
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.
Attribute values: See Enumerated Domain Value Definitions for SBAS_NO attribute.
Attribute definition source:
State of Connecticut, Department of Environmental Protection
SHAPE
Definition:
Feature geometry.
Attribute values: Coordinates defining the features.
Attribute definition source:
ESRI
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.
Attribute values: Numeric value
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.
Attribute values: See Enumerated Domain Value Definitions for RBAS_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.
Attribute domain values
ValueDefinition
40
Connecticut Main Stem
10
Pawcatuck Main Stem
43
Farmington
33
French
74
Southwest Western Complex
22
Southeast Western Complex
37
Quinebaug
20
Southeast Shoreline
21
Southeast Eastern Complex
36
Pachaug
32
Natchaug
35
Moosup
42
Scantic
31
Willimantic
38
Shetucket
11
Wood
41
Stony Brook
62
Hollenbeck
64
Candlewood
80
Hudson Main Stem
81
Croton
71
Southwest Eastern
69
Naugatuck
66
Still
65
Aspetuck
68
Pomperaug
63
Tenmile
52
Quinnipiac
61
Blackberry
60
Housatonic Main Stem
48
Eightmile
70
Southwest Shoreline
53
South Central Western Complex
72
Saugatuck
44
Park
46
Mattabesset
45
Hockanum
67
Shepaug
47
Salmon
51
South Central Eastern Complex
50
South Central Shoreline
73
Norwalk
34
Fivemile
39
Yantic
30
Thames Main Stem
Attribute definition source:
State of Connecticut, Department of Environmental Protection
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.
Attribute domain values
ValueDefinition
3004
Oxoboxo Brook
3400
Fivemile River
4019
Falls River
4503
Tankerhoosen River
4008
Cold Brook
4702
Judd Brook
3103
Furnace Brook
3204
Stonehouse Brook
6009
Carse Brook
5208
Muddy River
3709
Wappoquia Brook
6011
Guinea Brook
6801
East Spring Brook
4205
Buckhorn Brook
4605
Allyn Brook
3906
Gardner Brook
4010
Goff Brook
3106
Skungamaug River
4006
Salmon Brook
4005
Folly Brook
3713
Mill Brook
6902
Hart Brook
6604
Sympaug Brook
4500
Hockanum River
6803
Sprain Brook
5207
Wharton Brook
4300
Farmington River
3803
Merrick Brook
3002
Shewville Brook
6013
Cobble Brook
6024
Means Brook
6014
Bog Hollow Brook
6302
Mill Brook
6805
Hesseky Brook
4400
Park River
6000
Housatonic River
6016
Womenshenuk Brook
4101
Muddy Brook
5104
Indian River
5203
Misery Brook
6005
Factory Brook
3109
Giffords Brook
4320
Salmon Brook
3601
Great Meadow Brook
3707
Mill Brook
4316
Thompson Brook
3000
Thames River
1101
Brushy Brook
7000
Southwest Shoreline
5307
Wepawaug River
3804
Beaver Brook
2106
Mystic River
4309
Cherry Brook
7105
Pequonnock River
6018
Pond Brook
7104
Booth Hill Brook
5303
Sargent River
4704
Pine Brook
7107
Cricker Brook
6006
Spruce Swamp Creek
7106
Ash Creek
7109
Sasco Brook
7108
Mill River
4803
Beaver Brook
4203
Gulf Stream
3500
Moosup River
4802
East Branch Eightmile River
3100
Willimantic River
5110
West River
5304
Wintergreen Brook
4003
Freshwater Brook
2207
Fourmile River
5202
Tenmile River
3404
Whetstone Brook
3701
Hamilton Reservoir Brook
2000
Southeast Shoreline
3710
Mashamoquet Brook
6300
Tenmile River
4403
Trout Brook
4307
Hubbard Brook
4502
Marsh Brook
5306
Indian River
4706
Fawn Brook
7101
Lewis Gut
3102
Middle River
7404
Mill River
7403
Noroton River
7300
Norwalk River
7203
West Branch Saugatuck River
7302
Silvermine River
7301
Comstock Brook
4312
Roaring Brook
6500
West Aspetuck River
4021
Black Hall River
6601
Miry Brook
3900
Yantic River
2201
Jordan Brook
4301
Slocum Brook
6915
Fulling Mill Brook
6912
Steele Brook
6026
Pumpkin Ground Brook
3708
Little River
4708
Dickinson Creek
5301
Willow Brook
2101
Anguilla Brook
3301
Mill Brook
4310
Nepaug River
4200
Scantic River
3604
Myron Kinney Brook
5111
Branford River
3907
Susquetonscut Brook
6402
Ball Pond Brook
4011
Reservoir Brook
6023
Eightmile Brook
3702
Breakneck Brook
6916
Hop Brook
2202
Latimer Brook
7102
Bruce Brook
4404
North Branch Park River
3300
French River
6920
Little River
6200
Hollenbeck River
6020
Pootatuck River
3006
Hunts Brook
6400
Lake Candlewood
6606
Limekiln Brook
6025
Farmill River
7201
Little River
6007
Salmon Creek
3704
Cohasse Brook
6304
Deuel Hollow Brook
6603
Padanaram Brook
5101
Oyster River
7411
Byram River
3502
Snake Meadow Brook
7410
East Branch Byram River
1004
Shunock River
7406
East Branch Mianus River
6800
Pomperaug River
4602
Willow Brook
7405
Rippowam River
7407
Mianus River
5206
Harbor Brook
8104
Titicus River
8103
East Branch Croton River
2103
Williams Brook
6907
Rock Brook
4016
Whalebone Creek
4004
Podunk River
7412
Blind Brook
4319
West Branch Salmon Brook
4206
Broad Brook
7409
Horseneck Brook
7408
Greenwich Creek
7202
Aspetuck River
6301
Indian Lake Creek
6600
Still River
5201
Eightmile River
7402
Darien River
8105
Waccabuc River
6700
Shepaug River
8100
Croton River
8000
Hudson River
8102
Corner Pond Brook
8101
Quaker Brook
7200
Saugatuck River
3716
Broad Brook
4302
Mad River
4601
Belcher Brook
4315
Pequabuck River
2203
Oil Mill Brook
4607
Coginchaug River
5106
Hammonasset River
3201
Bungee Brook
6201
Brown Brook
6202
Wangum Lake Brook
6012
Kent Falls Brook
7103
Yellow Mill Channel
6806
Transylvania Brook
3715
Cory Brook
5000
South Central Shoreline
5109
Sluice Creek
5103
Menunketesuck River
3501
Quanduck Brook
4606
Sawmill Brook
2204
Niantic River
6001
Sages Ravine Brook
3605
Billings Brook
2102
Copps Brook
4000
Connecticut River
4701
Raymond Brook
3711
Blackwell Brook
6904
West Branch Naugatuck River