This layer represents Inland Waterfowl / Wading bird Habitat (IWWH), a Significant Wildlife Habitat defined under Maine's Natural Resources Protection Act (NRPA; http://www.maine.gov/dep/blwq/docstand/nrpapage.htm). IWWHs with a high or moderate rating meet the Significant Wildlife Habitat definition and are protected under NRPA. Low-rated IWWHs are NOT included in this layer because they do not meet the definition and are not protected under NRPA. Boundaries and attributes of polygons in organized townships were updated in 2008 by MDIFW staff using recent (2001-2007), high-resolution (250 ft from a vegetated, non-forested wetland on a Great Pond. Changes to polygon boundaries and IWWH ratings are occasionally made based on a field visit by an MDIFW regional biologist. The last such modification was made 2012-04-09.
Locations of wildlife species that are endangered, threatened, or of special concern in Maine as mapped by Maine Department of Inland Fisheries and Wildlife (Natural Heritage Program). Each observation is buffered by a 0.25-mile-radius circle that does not indicate habitat but is a "consultation zone" within which species experts at Maine Department of Inland Fisheries and Wildlife should be consulted to determine potential effects of activities upon the species. Last updated 2008-02-06.
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.
Inland Waterfowl and Wading Bird Habitat (IWWH) polygons rated as HIGH or MODERATE value with a wetland area of at least 10 acres. Polygons originally were mapped by MDIFW regional staff and/or via an automated system (hereafter referred to as UMO process) developed by Heather Rustigian and William Krohn (USGS Biological Resources Division) using statewide digital NWI (National Wetlands Inventory) data, aerial imagery, and hydrology data. Polygon boundaries and NRPA ratings were updated in 2007-08 by MDIFW staff using recent (2001-2007) high-resolution (<=1 m), color orthoimagery. For most polygons, multiple images from different years and seasons were used. Upland zones, typically 250 ft in diameter around the wetland, were clipped to exclude areas of intensive development, slivers crossing major roads into non-wetland habitat, and shorelines >250 ft from a vegetated, non-forested wetland on a Great Pond. UPDATED Sep 26, 2008.