BATHYM100 contains bathymetry lines for the Gulf of Maine at a scale of 1:100,000 showing depth in 10 meter intervals. This dataset was developed by the Maine Geological Survey using USGS 30 X 60 minute series topographic-bathymetric maps. Bathymetric contours are coded with depth in meters (10 meter interval mean lower low water datum). Spatial topology varies from good to poor.
TWWH contains Tidal Waterfowl and Wading Bird Habitat (TWWH) polygons rated as HIGH or MODERATE value. Polygons were mapped by MDIFW regional staff using statewide digital NWI (National Wetlands Inventory) data, CMGE (Coastal Marine Geologic Environments) data, eelgrass beds as mapped by Maine's Department of Marine Resources, and aerial imagery. Boundaries between adjacent polygons have been dissolved and did not retain habitat type details, nor its value rating. This layer is a preliminary outline of tidal habitat that meets the definition of the Natural Resources Protection Act (NRPA) and should be used until a more detailed map is completed.
CELCP_ Eligible _Watersheds is a shapefile that depicts watersheds in Maine that are eligible for Coastal and Estuarine Land Conservation Program (CELCP) support. The data layer was derived from the NRCS’s hu8_a_me watershed layer. CELCP provides matching funds to state and local governments to purchase coastal and estuarine lands that are important for their ecological, conservation, recreational, historical or aesthetic values and are under threat of conversion. Attributes include the 8-digit Hydrologic Unit Codes (HUC), the name of the major river within each watershed, and the state where the watershed is located.