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Connecticut Railroads Master

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: State of Connecticut, Department of Environmental Protection (data editor and publisher)
Originator: U.S. Geological Survey, National Mapping Program (data compiler)
Publication_Date: 19940101
Title:
Connecticut Railroads Master
Edition: 2005
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:
Publication_Place: Hartford, Connecticut, USA
Publisher: State of Connecticut, Department of Environmental Protection
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 corrections and improvements to feature geometry and feature attribute information. Previously undetected errors have been corrected. Also, some feature attribute information (data fields) have been slightly modified and made easier to use. Except for periodic corrections, this layer includes information that is relatively static and does not change over time. Data compiled at 1:24,000 scale.
Online_Linkage: http://www.ct.gov/deep
Description:
Abstract:
Connecticut Railroads Master is a 1:24,000-scale, feature-based layer that includes all railroad features depicted on all of the U.S. Geological Survey (USGS) 7.5 minute topographic quadrangle maps that cover the State of Connecticut. The layer is based on information from USGS topographic quadrangle maps published between 1969 and 1984 and does not represent the railroad system in Connecticut at any one particular point in time. The layer does not depict current conditions and excludes many railroads that have been built, modified, or removed since the time these topographic quadrangle maps were published. The layer includes railroad tracks, bridges, drawbridges, roundhouses, sidings, tracks, tunnels, underpasses, and stations. It does not include train schedule or track related information. Features are linear and represent railroad track centerlines. Attribute information is comprised of codes to cartographically represent (symbolize) rail features on a map. This layer was originally published in 1994. The 2005 edition includes the same rail features published in 1994, but the attribute information has been slightly modified and made easier to use.
Purpose:
Connecticut Railroads Master is 1:24,000-scale base map data. It depicts the location of all railroads trails published on the USGS topographic quadrangle maps. For base map purposes, use this layer with other 1:24,000-scale base map data such as Hydrography Master, Roads and Trails Master, Airports Master, and Towns Master. This layer may be used as a possible data source for other 1:24,000-scale layers having features that should coincide with railroad tracks on the USGS topographic quadrangle maps. Not intended for maps printed at map scales greater or more detailed than 1:24,000 scale (1 inch = 2,000 feet.)
Supplemental_Information:
In 2004, the State of Connecticut Department of Environmental Protection developed automated procedures to systematically maintain feature topology and attribute integrity for a set of related transportation data produced by the agency during the 1980's and 1980's from the 1:24,000-scale USGS DLGs. These layers include Roads and Trails Master, Roads and Trails, Railroads Master, Railroads, Buffered Roads Master, Buffered Roads, Airports Master, and Airports. Automated procedures were developed using ArcInfo Workstation 8.3 software and the Arc Macro Language (AML) as a scripting environment and recorded in an AML file named MAKECOVER.AML for the transportation category of data for the State of Connecticut, Department of Environmental Protection. For additional information related to the original source of data from the U.S. Geological Survey, refer to the Data User Guides and Standards for 1:24,000-Scale Digital Line Graphs and Quadrangle Maps available from the U.S. Geological Survey, National Mapping Program.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1969
Ending_Date: 1984
Currentness_Reference:
Publication dates of the USGS 7.5 minute topographic quadrangle maps for the State of Connecticut through 1984.
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -73.767940
East_Bounding_Coordinate: -71.738223
North_Bounding_Coordinate: 42.128490
South_Bounding_Coordinate: 40.942283
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: digital line graph
Theme_Keyword: DLG
Theme_Keyword: large scale
Theme_Keyword: transportation
Theme_Keyword: railroad
Theme_Keyword: track
Theme_Keyword: siding
Theme_Keyword: station
Theme_Keyword: base map
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: transportation
Place:
Place_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_Keyword: Connecticut
Place_Keyword: CT
Place:
Place_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.
Place_Keyword: United States of America
Place_Keyword: USA
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 and the U.S. Geological Survey, National Mapping Program as the source for this information. For example, include the following data source description when printing this layer on a map: Railroads - From the Railroads Master layer, compiled and published by CT DEP and USGS. Source map scale is 1:24,000.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: State of Connecticut, Department of Environmental Protection
Contact_Person: Howie Sternberg
Contact_Address:
Address_Type: mailing and physical address
Address:
79 Elm Street
City: Hartford
State_or_Province: Connecticut
Postal_Code: 06106-5127
Country: USA
Contact_Voice_Telephone: 860-424-3540
Contact_Facsimile_Telephone: 860-424-4058
Contact_Electronic_Mail_Address: dep.gisdata@ct.gov
Hours_of_Service: Monday to Friday, 08:30 to 16:30 Eastern Standard Time
Browse_Graphic:
Browse_Graphic_File_Name: http://www.cteco.uconn.edu/metadata/dep/browsegraphic/railroadmasterfullview.gif
Browse_Graphic_File_Description:
Full view of Connecticut Railroads Master. These data include nearby railroads in Massachusetts, New York and Rhode Island published on the USGS 7.5 minute topographic maps that cover Connecticut.
Browse_Graphic_File_Type: GIF
Browse_Graphic:
Browse_Graphic_File_Name: http://www.cteco.uconn.edu/metadata/dep/browsegraphic/railroadmasterdetailview.gif
Browse_Graphic_File_Description:
Detail view of Connecticut Railroads Master within the vicinty of New Haven, Connecticut. These railroad features are based on information published on USGS 7.5 minute topographic quadrangle maps.
Browse_Graphic_File_Type: GIF
Native_Data_Set_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.
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The layer retains the feature types identified by the USGS. All attributes have valid values. Values are within defined domains. The accuracy test for the RRARC_COD attribute values was conducted by comparing the railroads published on the source topographic quadrangle maps with 1:24,000-scale check plots or interactive displays of the railroads data on a computer graphic system. These checkplots and computer displays depicted the railroad features in different colors based on their respective RRARC_COD values for comparison with the paper quadrangle maps. The RAIL_CLASS, AV_LEGEND, and IMS_LEGEND attribute values are based on RRARC_COD values. RAIL_CLASS decodes the RRARC_COD field. AV_LEGEND and IMS_LEGEND are broad classifications of RRARC_COD values. The RAIL_CLASS, AV_LEGEND, and IMS_LEGEND fields were populated though table joins to lookup tables. These values were not manually entered.
Logical_Consistency_Report:
Line features conform to the following topological rules. Lines are single part. 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. The tests of logical consistency were performed by the USGS PROSYS program, and subsequently 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 10 feet (dangle length).
Completeness_Report:
The completeness of the data reflects the USGS National Mapping Division standards for feature content of the data sources, which are the Large Scale (7.5 minute) Digital Line Graph (DLG) files available from the USGS. For Connecticut, the Large Scale DLG files used to create this layer are for the 1:24,000-scale topographic quadrangle maps published between 1969 and 1984.  The layer is complete in the sense that it accurately reflects the contents of the most recently published USGS topographic quadrangle maps available at the time the State of Connecticut, Department of Environmental Protection began creating the layer. Some newer quadrangle maps have been published by the USGS since 1984, however, the State of Connecticut did not incorporate this information into the layer. So compared to the most recent set of topographic quadrangle maps available today, the layer is incomplete, and substantially incomplete when compared to the railroad system in existence today. This data is not updated.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
This data complies with United States National Map Accuracy Standards for 1:24,000 scale maps. According to this standard, not more than 10 percent of the points 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.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: U.S. Geological Survey, National Mapping Program (data compiler and publisher)
Publication_Date: 1969-1984
Title:
USGS Large Scale Digital Line Graph (DLG)
Geospatial_Data_Presentation_Form: file
Publication_Information:
Publication_Place: Reston, Virginia, USA
Publisher: U.S. Geological Survey
Source_Scale_Denominator: 24000
Type_of_Source_Media: digital tape media
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1969
Ending_Date: 1984
Source_Currentness_Reference:
Publication dates of the USGS 7.5 minute topographic quadrangle maps for the State of Connecticut through 1984.
Source_Citation_Abbreviation:
Source 1 - DLG
Source_Contribution:
USGS Large Scale Digital Line Graph (DLG) data are digital representations of the cartographic (base map) information published on the 1:24,000-scale, 7.5 minute topographic quadrangle maps. The USGS produces DLG data per 7.5 minute quadrangle. DLG data is organized into categories such as hydrography, boundaries, and transportation. At the time the State of Connecticut began developing the Railroads layer in the late 1980's, Large Scale DLG files were available for 112 of the 115 topographic quadrangle maps necessary to cover Connecticut. Large Scale DLG files were not available for the West Springfield Mass-Conn, Springfield South Mass-Conn, and Hamden Mass-Conn quadrangle. It is important to note that the Large-Scale DLGs were produced in the 1980's at a time when the USGS was developing standards, conventions, and procedures to convert topographic quadrangle maps into digital spatial data. The Connecticut DLG files were produced by digitizing from stable-base mylars using a digitizing tablet to capture the digital data. The features were manually digitized and attributed. Today, there are other methods available for producing DLGs. For additional DLG documentation, refer to the Data User Guides and Standards for 1:24,000-Scale Digital Line Graphs and Quadrangle Maps available from the U.S. Geological Survey, National Mapping Program.
Source_Information:
Source_Citation:
Citation_Information:
Originator: U.S. Geological Survey, National Mapping Program (data compiler)
Publication_Date: Unpublished Material
Title:
Scanned USGS Topographic Quadrangle Map Mylars
Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:
Publication_Place: Reston, Virginia, USA
Publisher: U.S. Geological Survey
Source_Scale_Denominator: 24000
Type_of_Source_Media: digital tape media
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1979
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
Source 2 - Quadrangle image data
Source_Contribution:
In the absence of Large Scale DLG data, the USGS provided the State of Connecticut with raster image scans of the mylar separates used to publish the black, red, brown, and blue inks for 3 of the 115 topographic quadrangle maps that cover Connecticut. These quadrangles include West Springfield Mass-Conn, Springfield South Mass-Conn, and Hamden Mass-Conn.
Source_Information:
Source_Citation:
Citation_Information:
Originator: State of Connecticut, Department of Environmental Protection (data editor)
Originator: U.S. Geological Survey, National Mapping Program (data compiler)
Publication_Date: Unpublished Material
Title:
Railroad 7.5 minute quadrangle Coverages
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:
Publication_Place: Hartford, Connecticut, USA
Publisher: State of Connecticut, Department of Environmental Protection
Source_Scale_Denominator: 24000
Type_of_Source_Media: disc
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1969
Ending_Date: 1984
Source_Currentness_Reference:
Publication dates of the USGS 7.5 minute topographic quadrangle maps for the State of Connecticut through 1984.
Source_Citation_Abbreviation:
Source 3 - Quadrangle data
Source_Contribution:
Railroad features for each quadrangle map.
Source_Information:
Source_Citation:
Citation_Information:
Originator: State of Connecticut, Department of Environmental Protection (data editor and publisher)
Originator: U.S. Geological Survey, National Mapping Program (data compiler)
Publication_Date: 19940101
Title:
Connecticut Railroads Master
Edition: 2005
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:
Publication_Place: Hartford, Connecticut, USA
Publisher: State of Connecticut, Department of Environmental Protection
Online_Linkage: http://www.ct.gov/deep
Source_Scale_Denominator: 24000
Type_of_Source_Media: disc
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1969
Ending_Date: 1984
Source_Currentness_Reference:
Publication dates of the USGS 7.5 minute topographic quadrangle maps for the State of Connecticut through 1984.
Source_Citation_Abbreviation:
Source 4 - Railroad
Source_Contribution:
Railroad features for all Connecticut quadrangle maps combined in a single, statewide layer. Railroad is in ArcInfo Coverage format.
Source_Information:
Source_Citation:
Citation_Information:
Originator: State of Connecticut, Department of Environmental Protection (data editor and publisher)
Originator: U.S. Geological Survey, National Mapping Program (data compiler)
Publication_Date: 19940101
Title:
Connecticut Railroads Master
Edition: 2005
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:
Publication_Place: Hartford, Connecticut, USA
Publisher: State of Connecticut, Department of Environmental Protection
Online_Linkage: http://www.ct.gov/deep
Source_Scale_Denominator: 24000
Type_of_Source_Media: disc
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1969
Ending_Date: 1984
Source_Currentness_Reference:
Publication dates of the USGS 7.5 minute topographic quadrangle maps for the State of Connecticut through 1984.
Source_Citation_Abbreviation:
Source 5 - Railroad_Master.shp
Source_Contribution:
Railroad features for all Connecticut quadrangle maps combined in a single, statewide layer. Railroad_Master.shp is in Shapefile format.
Source_Information:
Source_Citation:
Citation_Information:
Originator: State of Connecticut, Department of Environmental Protection (data editor and publisher)
Originator: U.S. Geological Survey, National Mapping Program (data compiler)
Publication_Date: 19940101
Title:
Connecticut Railroads Master
Edition: 2005
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:
Publication_Place: Hartford, Connecticut, USA
Publisher: State of Connecticut, Department of Environmental Protection
Online_Linkage: http://www.ct.gov/deep
Source_Scale_Denominator: 24000
Type_of_Source_Media: disc
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1969
Ending_Date: 1984
Source_Currentness_Reference:
Publication dates of the USGS 7.5 minute topographic quadrangle maps for the State of Connecticut through 1984.
Source_Citation_Abbreviation:
Source 6 - Railroad_Master
Source_Contribution:
Railroad features for all Connecticut quadrangle maps combined in a single, statewide layer. Railroad_Master is in GeoDatabase Feature Class format.
Process_Step:
Process_Description:
DLG to ArcInfo coverage format conversion - Using ESRI ArcInfo software, the State of Connecticut, Department of Enviromental Protection converted the Railroad overlay from the Transporation category for each Large Scale DLG file to ArcInfo Coverage format, resulting in one ArcInfo Coverage of linear features for each quadrangle area. The Transportation category of data includes major transportation systems collected in three separate overlays labeled: (1) Roads and Trails, (2) Railroads, and (3) Pipelines, Transmission Lines, and Miscellaneous Transportation Features. Only the Railroad overlay was extracted from the Transportation Layer as a data source for this layer. Each Coverage was converted from UTM to Connecticut State Plane, North American Datum of 1927 (NAD27).
Source_Used_Citation_Abbreviation:
Source 1 - DLG
Process_Date: 1985-1987
Source_Produced_Citation_Abbreviation:
Source 3 - Quadrangle data
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: State of Connecticut, Department of Environmental Protection
Contact_Person: Deborah Dumin, Jonathan Scull
Contact_Address:
Address_Type: mailing and physical address
Address:
79 Elm Street
City: Hartford
State_or_Province: Connecticut
Postal_Code: 06106
Country: USA
Contact_Voice_Telephone: 860-424-3540
Process_Step:
Process_Description:
Image to vector (ArcInfo coverage) format conversion - Using ESRI ArcInfo software, the black ink image files that depict the railroad (and road and trail features) on three topographic quadrangle maps were georeferenced to Connecticut State Plane, North American Datum of 1927 (NAD27) by registering the image corners to the corresponding quadrangle corner tics.  In an interactive ArcInfo editing environment, the railroad track features were visually identified on the background image and manually vectorized. Railroad features that would have been included in the DLG Transportation category by the USGS were were manually digitized on the screen (heads-up digitizing). Features were assigned RRARC_COD values based on their cartographic representation on the topographic quadrangle maps. Check plots were made to inspect digitizing quality and the assignment of RRARC_COD values.
Source_Used_Citation_Abbreviation:
Source 2 - Quadrangle image data
Process_Date: 1988
Source_Produced_Citation_Abbreviation:
Source 3 - Quadrangle data
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: State of Connecticut, Department of Environmental Protection
Contact_Person: Howie Sternberg
Contact_Address:
Address_Type: mailing and physical address
Address:
79 Elm Street
City: Hartford
State_or_Province: Connecticut
Postal_Code: 06106
Country: USA
Contact_Voice_Telephone: 860-424-3540
Process_Step:
Process_Description:
Attribute value verification - The quality and accuracy of the digitizing and coding of the railroad features was checked by comparing the transporation features in each ArcInfo Coverage with the railroad features on the published USGS topographic quadrangle maps. Visual comparisons using 1:24,000 scale paper check plots combined with automated procedures to identify inconsistent attribute coding were the primary means of evaluating and correcting obvious errors with the original DLG data. Where necessary, corrections were made to DLG major and minor codes in the ArcInfo Coverages. The original DLG major and minor codes were modified to form the RRARC_COD attribute in the final Railroads layer.
Source_Used_Citation_Abbreviation:
Source 3 - Quadrangle data
Process_Date: 1985-1988
Source_Produced_Citation_Abbreviation:
Source 3 - Quadrangle data
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: State of Connecticut, Department of Environmental Protection
Contact_Person: Howie Sternberg
Contact_Address:
Address_Type: mailing and physical address
Address:
79 Elm Street
City: Hartford
State_or_Province: Connecticut
Postal_Code: 06106
Country: USA
Contact_Voice_Telephone: 860-424-3540
Process_Step:
Process_Description:
Quadrangle coverage edgematch - Using ESRI ArcInfo software, the individual 7.5 minute quadrangle coverages of Railroad features were systematically edgematched. Features along the edges of adjacent quadrangle were moved to make their end-point coordinates identical through a process of checkerboard style edgematching. Features on every other quadrangle were adjusted. The ends of Railroad segments were snapped to align with the connecting stationary features on adjacent quadrangles if their end-points were generally within 20 feet. On occasion, there were no connecting features on adjacent quadrangles to match to so some features abruptly end at quadrangle boundaries. This is mostly due to variations in quadrangle publication dates.  Varying publication dates also explain inconsistent DLG major and minor codes for certain railroads that appear on more than one topographic map. For example, a track that appears on two adjacent quadrangle maps may appear as a track on one map and abandoned track on the adjacent (more recent) map. Consequently, RRARC_COD values for some railroad tracks change when crossing quadrangle boundaries. These inconsistencies were not resolved because the intent was to represent the classification of these features on USGS topographic quadrangle maps.
Source_Used_Citation_Abbreviation:
Source 3 - Quadrangle data
Process_Date: 1989-1990
Source_Produced_Citation_Abbreviation:
Source 3 - Quadrangle data
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: State of Connecticut, Department of Environmental Protection
Contact_Person: Howie Sternberg
Contact_Address:
Address_Type: mailing and physical address
Address:
79 Elm Street
City: Hartford
State_or_Province: Connecticut
Postal_Code: 06106
Country: USA
Contact_Voice_Telephone: 860-424-3540
Process_Step:
Process_Description:
Statewide layer creation - Using ESRI ArcInfo sofware, all of individual 7.5 minute quadrangle coverages were appended to form a single, statewide Railroads layer.  Linear features were unsplit (merged) to eliminate unnecessary pseudo nodes between similar features from adjacent quadrangle areas. Final line feature topology was established with ArcInfo Fuzzy and Dangle tolerances verified at 4 and 10 feet, respectively. At this step in the process the Railroads layer was fully attributed and ready for use. Not all data fields from the orginal DLG files were preserved by this step in the process. A new data field, AV_LEGEND, was added to more easily classify and cartographically represent features when displaying the information with software such as ArcView.
Source_Used_Citation_Abbreviation:
Source 3 - Quadrangle data
Process_Date: 1994
Source_Produced_Citation_Abbreviation:
Source 4 - Railroad
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: State of Connecticut, Department of Environmental Protection
Contact_Person: Howie Sternberg
Contact_Address:
Address_Type: mailing and physical address
Address:
79 Elm Street
City: Hartford
State_or_Province: Connecticut
Postal_Code: 06106
Country: USA
Contact_Voice_Telephone: 860-424-3540
Process_Step:
Process_Description:
Datum conversion - Using ESRI ArcInfo software, the Railroads layer was converted from the Connecticut State Plane Coordinate System of 1927 (NAD27) to the Connecticut State Plane Coordinate System of 1983 (NAD83). The NADCON (North American Datum CONversion) data transformation was used.
Source_Used_Citation_Abbreviation:
Source 4 - Railroad
Process_Date: 1999
Source_Produced_Citation_Abbreviation:
Source 4 - Railroad
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: State of Connecticut, Department of Environmental Protection
Contact_Person: Howie Sternberg
Contact_Address:
Address_Type: mailing and physical address
Address:
79 Elm Street
City: Hartford
State_or_Province: Connecticut
Postal_Code: 06106
Country: USA
Contact_Voice_Telephone: 860-424-3540
Process_Step:
Process_Description:
Attribute enhancements - RAIL_CLASS and AV_LEGEND attributes were changed from storing abbreviated values in upper case (e.g. TRACK, SIDING, STATION ) to full length values in both upper and lower case (e.g. Track, Siding, Station). Additionally the IMS_LEGEND attribute was added to establish a very general classification scheme for symbolizing railroad features with Internet mapping software environments such as ArcIMS. The following attributes from the original DLG files were removed from the data table due to poor data quality: PHOTRV_FLG and QUAD_NO. These attribute values were inconsistent, not verified and of limited value to the State of Connecticut. Using Arc Macro Language (AML), an automated process (MAKECOVER.AML) was developed to maintain consistent attribute values by programmatically joining lookup data tables to decode numeric code fields.
Source_Used_Citation_Abbreviation:
Source 4 - Railroad
Process_Date: 2001-2004
Source_Produced_Citation_Abbreviation:
Source 4 - Railroad
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: State of Connecticut, Department of Environmental Protection
Contact_Person: Elizabeth Doran, Howie Sternberg
Contact_Address:
Address_Type: mailing and physical address
Address:
79 Elm Street
City: Hartford
State_or_Province: Connecticut
Postal_Code: 06106
Country: USA
Contact_Voice_Telephone: 860-424-3540
Process_Step:
Process_Description:
Create 2005 Edition of Railroad - The automated process (software program), MAKECOVER.AML, developed for the previous process step was executed in 2005 in order to create a 2005 edition (copy) of Railroad that captures recent corrections and enhancements made to the layer. The MAKECOVER.AML program was last run in 2005, and the name of the resulting ArcInfo coverage created by this automated process is RAILMASTER.   Prior to 2005, the Railroads Master layer in ArcInfo Coverage format was named RAILROAD.
Source_Used_Citation_Abbreviation:
Source 4 - Railroad
Process_Date: 2005
Source_Produced_Citation_Abbreviation:
Source 4 - Railroad
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: State of Connecticut, Department of Environmental Protection
Contact_Person: Howie Sternberg
Contact_Address:
Address_Type: mailing and physical address
Address:
79 Elm Street
City: Hartford
State_or_Province: Connecticut
Postal_Code: 06106
Country: USA
Contact_Voice_Telephone: 860-424-3540
Process_Step:
Process_Description:
Export to Shapefile format - Converted line feature data from an ArcInfo coverage named RAILMASTER to a Shapefile named Railroad_Master.shp. Excluded the FNODE#, TNODE#, LPOLY#, RPOLY#, LENGTH, RAILMASTER#, RAILMASTER-ID attributes from the Shapefile because their values are only maintained by ArcInfo software with spatial data that is ArcInfo coverage format.
Source_Used_Citation_Abbreviation:
Source 4 - Railroad
Process_Date: 2005
Source_Produced_Citation_Abbreviation:
Source 5 - Railroad_Master.shp
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: State of Connecticut, Department of Environmental Protection
Contact_Person: Howie Sternberg
Contact_Address:
Address_Type: mailing and physical address
Address:
79 Elm Street
City: Hartford
State_or_Province: Connecticut
Postal_Code: 06106
Country: USA
Contact_Voice_Telephone: 860-424-3540
Process_Step:
Process_Description:
Convert to GeoDatabase Feature Class format - Defined new Feature Class named Railroad_Master; and imported the attribute definitions, loaded features and imported metadata from Railroad_Master.shp shapefile. 

Spatial Reference Properties for Feature Class:

Coordinate System: NAD_1983_StatePlane_Connecticut_FIPS_0600_Feet
XY Domain MinX: 100000; MaxX: 2247483.645
XY Domain MinY: 200000; MaxY: 2347483.645
Precision: 1000
Source_Used_Citation_Abbreviation:
Source 5 - Railroad_Master.shp
Process_Date: 2006
Source_Produced_Citation_Abbreviation:
Source 6 - Railroad_Master
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: State of Connecticut, Department of Environmental Protection
Contact_Person: Howie Sternberg
Contact_Address:
Address_Type: mailing and physical address
Address:
79 Elm Street
City: Hartford
State_or_Province: Connecticut
Postal_Code: 06106
Country: USA
Contact_Voice_Telephone: 860-424-3540
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Spatial_Data_Organization_Information:
Indirect_Spatial_Reference_Method:
State of Connecticut, United States of America
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: String
Point_and_Vector_Object_Count: 4552
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Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Lambert Conformal Conic
Lambert_Conformal_Conic:
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_Definition:
Altitude_System_Definition:
Altitude_Resolution: 1.000000
Altitude_Encoding_Method: Explicit elevation coordinate included with horizontal coordinates
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Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Connecticut Railroads Master
Entity_Type_Definition:
Railroads, Rail Sidings and Railroad Stations as line features
Entity_Type_Definition_Source:
State of Connecticut, Department of Environmental Protection and U.S. Geological Survey, National Mapping Program
Attribute:
Attribute_Label: OBJECTID
Attribute_Definition:
Internal feature number.
Attribute_Definition_Source:
ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: SHAPE
Attribute_Definition:
Feature geometry.
Attribute_Definition_Source:
ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Coordinates defining the features.
Attribute:
Attribute_Label: RRARC_COD
Attribute_Definition:
Railroad Arc Code. Numeric values that identify railroad feature types.
Attribute_Definition_Source:
State of Connecticut, Department of Environmental Protection
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0
Enumerated_Domain_Value_Definition:
Not Railroad
Enumerated_Domain_Value_Definition_Source:
CT DEP, USGS
Enumerated_Domain:
Enumerated_Domain_Value: 201
Enumerated_Domain_Value_Definition:
Railroad
Enumerated_Domain_Value_Definition_Source:
CT DEP, USGS
Enumerated_Domain:
Enumerated_Domain_Value: 202
Enumerated_Domain_Value_Definition:
Railroad in Street or Road
Enumerated_Domain_Value_Definition_Source:
CT DEP, USGS
Enumerated_Domain:
Enumerated_Domain_Value: 204
Enumerated_Domain_Value_Definition:
Carline
Enumerated_Domain_Value_Definition_Source:
CT DEP, USGS
Enumerated_Domain:
Enumerated_Domain_Value: 208
Enumerated_Domain_Value_Definition:
Railroad Siding
Enumerated_Domain_Value_Definition_Source:
CT DEP, USGS
Enumerated_Domain:
Enumerated_Domain_Value: 209
Enumerated_Domain_Value_Definition:
Perimeter or Limit of yard
Enumerated_Domain_Value_Definition_Source:
CT DEP, USGS
Enumerated_Domain:
Enumerated_Domain_Value: 400
Enumerated_Domain_Value_Definition:
Perimeter of Railroad Station
Enumerated_Domain_Value_Definition_Source:
CT DEP, USGS
Enumerated_Domain:
Enumerated_Domain_Value: 402
Enumerated_Domain_Value_Definition:
Roundhouse
Enumerated_Domain_Value_Definition_Source:
CT DEP, USGS
Enumerated_Domain:
Enumerated_Domain_Value: 2201
Enumerated_Domain_Value_Definition:
Two Track Railroad
Enumerated_Domain_Value_Definition_Source:
CT DEP, USGS
Enumerated_Domain:
Enumerated_Domain_Value: 4201
Enumerated_Domain_Value_Definition:
Four Track Railroad
Enumerated_Domain_Value_Definition_Source:
CT DEP, USGS
Enumerated_Domain:
Enumerated_Domain_Value: 209201
Enumerated_Domain_Value_Definition:
Railroad, Perimeter or Limit of Yard
Enumerated_Domain_Value_Definition_Source:
CT DEP, USGS
Enumerated_Domain:
Enumerated_Domain_Value: 209208
Enumerated_Domain_Value_Definition:
Railroad Siding, Perimeter or Limit of Yard
Enumerated_Domain_Value_Definition_Source:
CT DEP, USGS
Enumerated_Domain:
Enumerated_Domain_Value: 601201
Enumerated_Domain_Value_Definition:
Railroad, in Tunnel
Enumerated_Domain_Value_Definition_Source:
CT DEP, USGS
Enumerated_Domain:
Enumerated_Domain_Value: 601208
Enumerated_Domain_Value_Definition:
Railroad Siding, in Tunnel
Enumerated_Domain_Value_Definition_Source:
CT DEP, USGS
Enumerated_Domain:
Enumerated_Domain_Value: 602201
Enumerated_Domain_Value_Definition:
Railroad, Overpassing on Bridge
Enumerated_Domain_Value_Definition_Source:
CT DEP, USGS
Enumerated_Domain:
Enumerated_Domain_Value: 602208
Enumerated_Domain_Value_Definition:
Railroad Siding, Overpassing on Bridge
Enumerated_Domain_Value_Definition_Source:
CT DEP, USGS
Enumerated_Domain:
Enumerated_Domain_Value: 603201
Enumerated_Domain_Value_Definition:
Railroad, Abandoned
Enumerated_Domain_Value_Definition_Source:
CT DEP, USGS
Enumerated_Domain:
Enumerated_Domain_Value: 603208
Enumerated_Domain_Value_Definition:
Railroad Siding, Abandoned
Enumerated_Domain_Value_Definition_Source:
CT DEP, USGS
Enumerated_Domain:
Enumerated_Domain_Value: 605201
Enumerated_Domain_Value_Definition:
Railroad, Underpassing
Enumerated_Domain_Value_Definition_Source:
CT DEP, USGS
Enumerated_Domain:
Enumerated_Domain_Value: 605202
Enumerated_Domain_Value_Definition:
Railroad in Street or Road, Underpassing
Enumerated_Domain_Value_Definition_Source:
CT DEP, USGS
Enumerated_Domain:
Enumerated_Domain_Value: 605208
Enumerated_Domain_Value_Definition:
Railroad Siding, Underpassing
Enumerated_Domain_Value_Definition_Source:
CT DEP, USGS
Enumerated_Domain:
Enumerated_Domain_Value: 605210
Enumerated_Domain_Value_Definition:
Arbitrary Line Extension, Underpassing
Enumerated_Domain_Value_Definition_Source:
CT DEP, USGS
Enumerated_Domain:
Enumerated_Domain_Value: 606208
Enumerated_Domain_Value_Definition:
Railroad Siding, Narrow Gauge
Enumerated_Domain_Value_Definition_Source:
CT DEP, USGS
Enumerated_Domain:
Enumerated_Domain_Value: 607201
Enumerated_Domain_Value_Definition:
Railroad, in Snowshed or under Structure
Enumerated_Domain_Value_Definition_Source:
CT DEP, USGS
Enumerated_Domain:
Enumerated_Domain_Value: 607208
Enumerated_Domain_Value_Definition:
Railroad Siding, in Snowshed or under Structure
Enumerated_Domain_Value_Definition_Source:
CT DEP, USGS
Enumerated_Domain:
Enumerated_Domain_Value: 611201
Enumerated_Domain_Value_Definition:
Railroad, on Drawbridge
Enumerated_Domain_Value_Definition_Source:
CT DEP, USGS
Enumerated_Domain:
Enumerated_Domain_Value: 611202
Enumerated_Domain_Value_Definition:
Railroad in Street or Road, on Drawbridge
Enumerated_Domain_Value_Definition_Source:
CT DEP, USGS
Enumerated_Domain:
Enumerated_Domain_Value: 4209201
Enumerated_Domain_Value_Definition:
Four Track Railroad, Perimeter or Limit of Yard
Enumerated_Domain_Value_Definition_Source:
CT DEP, USGS
Enumerated_Domain:
Enumerated_Domain_Value: 4602201
Enumerated_Domain_Value_Definition:
Four Track Railroad, Overpassing on Bridge
Enumerated_Domain_Value_Definition_Source:
CT DEP, USGS
Enumerated_Domain:
Enumerated_Domain_Value: 4605201
Enumerated_Domain_Value_Definition:
Four Track Railroad, Underpassing
Enumerated_Domain_Value_Definition_Source:
CT DEP, USGS
Enumerated_Domain:
Enumerated_Domain_Value: 4611201
Enumerated_Domain_Value_Definition:
Four Track Railroad, on Drawbridge
Enumerated_Domain_Value_Definition_Source:
CT DEP, USGS
Enumerated_Domain:
Enumerated_Domain_Value: 605603201
Enumerated_Domain_Value_Definition:
Railroad, Abandoned, Underpassing
Enumerated_Domain_Value_Definition_Source:
CT DEP, USGS
Enumerated_Domain:
Enumerated_Domain_Value: 605603208
Enumerated_Domain_Value_Definition:
Railroad Siding, Abandoned, Underpassing
Enumerated_Domain_Value_Definition_Source:
CT DEP, USGS
Attribute:
Attribute_Label: RAIL_CLASS
Attribute_Definition:
Railroad Class. Text values that correspond to the numeric RRARC_COD attribute values. RAIL_CLASS is the English language equivalent of (decodes) the RRARC_COD field.
Attribute_Definition_Source:
State of Connecticut, Department of Environmental Protection
Attribute_Domain_Values:
Unrepresentable_Domain:
See Enumerated Domain Value Definitions for RRARC_COD attribute.
Attribute:
Attribute_Label: AV_LEGEND
Attribute_Definition:
ArcView Legend. Text field for symbolizing railroad feature types on a map.
Attribute_Definition_Source:
State of Connecticut, Department of Environmental Protection
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Abandoned
Enumerated_Domain_Value_Definition:
This category includes RRARC_COD values 603201, 603208, 605603201, 605603208.
Enumerated_Domain_Value_Definition_Source:
CT DEP
Enumerated_Domain:
Enumerated_Domain_Value: Bridge
Enumerated_Domain_Value_Definition:
This category includes RRARC_COD values 602201 and 602208.
Enumerated_Domain_Value_Definition_Source:
CT DEP
Enumerated_Domain:
Enumerated_Domain_Value: Drawbridge
Enumerated_Domain_Value_Definition:
This category includes RRARC_COD values 611201, 611202 and 4611201.
Enumerated_Domain_Value_Definition_Source:
CT DEP
Enumerated_Domain:
Enumerated_Domain_Value: Narrow Gauge
Enumerated_Domain_Value_Definition:
This category includes RRARC_COD value 606208.
Enumerated_Domain_Value_Definition_Source:
CT DEP
Enumerated_Domain:
Enumerated_Domain_Value: Roundhouse
Enumerated_Domain_Value_Definition:
This category includes RRARC_COD value 402.
Enumerated_Domain_Value_Definition_Source:
CT DEP
Enumerated_Domain:
Enumerated_Domain_Value: Siding
Enumerated_Domain_Value_Definition:
This category includes RRARC_COD values 208, 209208, and 607208.
Enumerated_Domain_Value_Definition_Source:
CT DEP
Enumerated_Domain:
Enumerated_Domain_Value: Track
Enumerated_Domain_Value_Definition:
This category includes RRARC_COD values 201, 202, 204, 2201, 4201, 209201, 607201, 4209201, and 4602201.
Enumerated_Domain_Value_Definition_Source:
CT DEP
Enumerated_Domain:
Enumerated_Domain_Value: Tunnel
Enumerated_Domain_Value_Definition:
This category includes RRARC_COD values 601201 and 601208.
Enumerated_Domain_Value_Definition_Source:
CT DEP
Enumerated_Domain:
Enumerated_Domain_Value: Underpass
Enumerated_Domain_Value_Definition:
This category includes RRARC_COD values 605201, 605202, 605208, 605210, and 4605201.
Enumerated_Domain_Value_Definition_Source:
CT DEP
Enumerated_Domain:
Enumerated_Domain_Value: Station
Enumerated_Domain_Value_Definition:
This category includes RRARC_COD values 209 and 400.
Enumerated_Domain_Value_Definition_Source:
CT DEP
Attribute:
Attribute_Label: IMS_LEGEND
Attribute_Definition:
Internet Mapping Software Legend. Text field for symbolizing railroad feature types on an Internet map.
Attribute_Definition_Source:
State of Connecticut, Department of Environmental Protection
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Abandoned
Enumerated_Domain_Value_Definition:
This category includes RRARC_COD values 603201, 603208, 605603201, and 605603208.
Enumerated_Domain_Value_Definition_Source:
CT DEP
Enumerated_Domain:
Enumerated_Domain_Value: Siding
Enumerated_Domain_Value_Definition:
This category includes RRARC_COD values 208, 209208, and 607208.
Enumerated_Domain_Value_Definition_Source:
CT DEP
Enumerated_Domain:
Enumerated_Domain_Value: Station
Enumerated_Domain_Value_Definition:
This category includes RRARC_COD values 209, 400 and 402.
Enumerated_Domain_Value_Definition_Source:
CT DEP
Enumerated_Domain:
Enumerated_Domain_Value: Track
Enumerated_Domain_Value_Definition:
This category includes RRARC_COD values 201, 202, 204, 2201, 4201, 601201, 601208, 605201, 605202, 605208, 605210, 606208, 607201, 611201, 611202, 4209201, 4602201, 4605201, and 4611201.
Enumerated_Domain_Value_Definition_Source:
CT DEP
Attribute:
Attribute_Label: SHAPE.len
Overview_Description:
Entity_and_Attribute_Overview:
Includes linear railroad features such as includes railroad tracks, bridges, drawbridges, roundhouses, sidings, tracks, tunnels, underpasses, and stations published on the U.S. Geological Survey 7.5 minute topographic quadrangle maps. Information encoded about features includes railroad feature type classification, and two standard symbology classification schemes.
Entity_and_Attribute_Detail_Citation:
For additional information related to the original source of data from the U.S. Geological Survey, refer to the Data User Guides and Standards for 1:24,000-Scale Digital Line Graphs and Quadrangle Maps available from the U.S. Geological Survey, National Mapping Program.
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: State of Connecticut, Department of Enviromental Protection
Contact_Address:
Address_Type: mailing and physical address
Address:
79 Elm Street
City: Hartford
State_or_Province: Connecticut
Postal_Code: 06106-5127
Country: USA
Contact_Voice_Telephone: 860-424-3540
Contact_Facsimile_Telephone: 860-424-4058
Contact_Electronic_Mail_Address: dep.gisdata@ct.gov
Hours_of_Service: Monday to Friday, 08:30 to 16:30 Eastern Standard Time
Resource_Description: Connecticut Railroads Master
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.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Shapefile, Feature Class, ArcInfo Coverage
Format_Version_Number: ArcGIS
File_Decompression_Technique: Zip file
Digital_Transfer_Option:
Online_Option:
Computer_Contact_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:
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.
Technical_Prerequisites:
Geographic information sytem (GIS), computer-aided drawing or other mapping software is necessary to display, view and access the information.
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Metadata_Reference_Information:
Metadata_Date: 20111208
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: State of Connecticut, Department of Environmental Protection
Contact_Person: Howie Sternberg
Contact_Address:
Address_Type: mailing and physical address
Address:
79 Elm Street
City: Hartford
State_or_Province: Connecticut
Postal_Code: 06106-5127
Country: USA
Contact_Voice_Telephone: 860-424-3540
Contact_Facsimile_Telephone: 860-424-4058
Contact_Electronic_Mail_Address: dep.gisdata@ct.gov
Hours_of_Service: Monday to Friday, 08:30 to 16:30 Eastern Standard Time
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Extensions:
Online_Linkage: http://www.esri.com/metadata/esriprof80.html
Profile_Name: ESRI Metadata Profile
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