Massachusetts (Hydrography, 2003)
- The MassGIS 1:25,000 Hydrography datalayer represents hydrographic (water-related) features, including surface water (lakes, ponds, reservoirs), wetlands, bogs, flats, rivers, streams, and others. The layer is a hybrid of data based on USGS Digital Line Graphs (DLGs), scanned mylar separates obtained from the USGS, and digitized hydrographic features from paper USGS 1:25,000 Topographic Quadrangle maps. This layer had previously contained features from the USGS 1:100,000 hydrography; these have been replaced with features from the scanned mylars.IMPORTANT: Please note that because this file is comprised of USGS tiles, the boundaries of the file do not correlate exactly with the border of Massachusetts.
- Massachusetts Office of Geographic and Environmental Information (MassGIS)
- Massachuetts, Eastern United States, United States, and U.S.A
- Hydrography, Water, and Polygon
- Held by
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