Somerville, MA (Water Features, 1999)
- Polygon coverage which displays those areas of two hydrographic features, Alewife Brook and the Mystic River, which are within the city limits of Somerville, Massachusetts.
- Somerville (MA) Geographic Information System (City of Somerville GIS)
- Somerville, MA, Eastern MA, USA, United States, New England, and Massachusetts
- Lake, Water, Hydrology, polygon, Mystic River, and river
- Held by
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