Aeromagnetic data were collected along flight lines by instruments in an aircraft that recorded magnetic-field values and locations. In the earlier days of surveying, the only way to represent this data was to generate an analog map with contour lines. This dataset is a representation of the digitized contour lines either by following the lines or by choosing the intersection of the contour and flight-line to create a value of the magnetic field. The values presented are latitude, longitude, and map magnetic-field values.

This map depicts the 235-mile New England National Scenic Trail (NET, NPS NEEN) which traverses both Connecticut and Massachusetts. This premier hiking trail connects from the Long Island Sound in Guilford, CT to the MA/NH border. This centerline feature combines the work of the Connecticut Forest & Park Association and the Appalachian Mountain Club.

Town of Agawam, MA GIS Viewer

This dataset contains boundary layers for the Aroostook National Wildlife Refuge in Maine.

National Wildlife Refuges are federal lands managed by the U.S. Fish and Wildlife Service (USFWS). The primary source for boundary information is the USFWS Realty program (status maps, legal surveys). An effort by the USFWS Region 5 (northeast states -ME,NH,VT, MA, RI, CT, NY, PA, NJ, MD, DE, WV, VA) Realty Division, Cartography and Spatial Data Services Branch has resulted in digital refuge boundaries for all refuges in the northeast at a scale of 1:24,000.

The purpose of this dataset is to serve as a spatial reference of refuge boundaries for other data layers in GIS and mapping applications. It is specifically not intended to be used as a land survey or representation of land for conveyance or tax purposes.

Status maps were registered to geographic coordinates, boundaries were digitized and labeled. Digital files were updated using survey and collateral data for newly acquired tracts, then stepped through 3 levels of quality-control review for spatial and thematic accuracy.