Massachusetts (Major Drainage Basins, 2003)
- This layer is a statewide digital datalayer of the 28 major drainage basins of Massachusetts as defined by the USGS Water Resources Division and the MA Water Resources Commission. It contains 885 arcs and 82,000 vertices. It is stored as a single statewide coverage. MassGIS created this data.MassGIS is maintaining this datalayer. In February 2002 the DEP GIS Group modified some linework within the USGS Woronoco (#33) Quadrangle to synchronize the major basin divide with changes in the DEP Surface Water Supply Protection Area datalayers (Zone A, B, C) and Sub-basin tiles. In May 2002 the DEP GIS Group revised the N. Coastal/Ipswich basin boundary in Wenham. In March 2003 linework was updated along the Westfield/Connecticut and N. Coastal/Ipswich boundaries.
- Massachusetts Office of Geographic and Environmental Information (MassGIS)
- MA, USA, United States, New England, and Massachusetts
- Drainage, Water, Watershed, Polygon, and Hydrology
- Held by
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