This single statewide coverage contains the state's 1,435 public community water supplies. Non-community public water supples such as schools, factories, and restaurants are not included. The layer is only available for 129 out of the 189 quadrangles in Massachusetts. This single statewide coverage contains contours at a 30 ft. interval. This statewide coverage displays the location of sand, fine-grained deposits, gravel, and floodplain.
Contour lines indicate the depth of sand and gravel deposits.
The coverage is maintained as 14 county files. MassGIS U.S. Geological Survey. A Geologic Map of the Sea Floor in Western Massachusetts Bay Constructed from Digital Sidescan-Sonar Images, Photography, and Sediment Samples Presents results of a detailed geologic survey of the sea floor area around the outfall for Boston's treated sewage effluent. Includes bathymetry, sidescan-sonar images, color photographs, text and interpretive geologic maps. This coverage is maintained as 351 individual town coverages.