This is a prerelease (early) version of the Watershed Boundary Dataset (WBD) for Connecticut, the digital hydrologic unit boundary layer that is at the Subwatershed (12-digit) level. The original data set was developed by delineating the boundary lines on base USGS 1:24000 scale topographic quadrangle, and digitizing the delineated lines. Digital Raster Graphics (DRG) images were used for edits to the data layer. This data set consists of geo-referenced digital map data and attribute data. The spatial data are in a statewide coverage format and include complete coverage of the entire state of Connecticut, and small parts of surrounding states. The hydrologic unit ID code attached to each delineated polygon is linked to the attribute data. See metadata for the final and official copy of NRCS Watershed Boundary Dataset for Connecticut.
See metadata for the final and official copy of NRCS Watershed Boundary Dataset for Connecticut.
publication date
represented as polygon features. (Source: State of Connecticut, Department of Environmental Protection)
Internal feature number. (Source: ESRI)
Feature geometry. (Source: ESRI)
This is a prerelease (early) version of the Watershed Boundary Dataset (WBD) for Connecticut. It includes attributes not included in the final dataset published by NRCS. These additional attributes document the correlation between Subregional drainage basin boundaries delineated by the State of Connecticut, Department of Environmental Protection and individual Watershed and Subwatershed unit boundaries that make up the Watershed Boundary Dataset. For consistency with boundaries previously delineated by the State of Connecticut, the NRCS based many Watershed and Subwatershed unit boundaries on previously delineated Subregional drainage basin boundaries. During the 1980's the Connecticut Department of Environmental Protection delineated natural drainage area boundaries for Connecticut based on the hydrography and contour line information published on the 1:24,000-scale USGS topographic quadrangle maps that covered the State of Connecticut. These boundaries included Major, Regional, Subregional, Local and basin boundaries for the entire state. The Watershed and Subwatershed hydrologic unit boundaries provide a uniquely identified and uniform method of subdividing large drainage areas. These smaller sized hydrologic units (up to 250,000 acres) are useful in many programs supported by the Natural Resources Conservation Service and others. See metadata for the final and official copy of NRCS Watershed Boundary Dataset for Connecticut.
See metadata for the final and official copy of NRCS Watershed Boundary Dataset for Connecticut.
See metadata for the final and official copy of NRCS Watershed Boundary Dataset for Connecticut.
See metadata for the final and official copy of NRCS Watershed Boundary Dataset for Connecticut.
See metadata for the final and official copy of NRCS Watershed Boundary Dataset for Connecticut.
See metadata for the final and official copy of NRCS Watershed Boundary Dataset for Connecticut.
79 Elm Street
| Data format: | in format Esri Feature Class (version ArcGIS 9) Size: 5.649 |
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| Network links: | http://www.ct.gov/deep |
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.
79 Elm Street