PREP Focus Area

map_PiscataquaRegionEstuaryIn December 2007, the PREP management committee agreed to expand the PREP’s area of focus to include the entire Great Bay Estuary watershed, which includes 24 percent of the watershed in Maine. PREP now works in 42 communities in New Hampshire and 10 communities in Maine.

Download PDF Document2012 Piscataqua Region Estuary Poster (download PDF)

General Maps

New Hampshire’s coastal watershed includes 10 sub-watersheds and two major estuarine systems: Great Bay and Hampton-Seabrook Harbor. The following maps illustrate these systems and include major roadways and geographic features to help orient visitors to the Seacoast.

New Hampshire Coastal Watershed

Impervious Surface Maps

N-Impervious2010ProjectGraphicsmallCustomized maps for each town in the 52-town PREP region have been created that show impervious surfaces, conservation lands identified in the Land Conservation Plan for New Hampshire’s Coastal Watersheds and the Land Conservation Plan for Maine’s Piscataqua Region Watersheds, roads, surface waters, and impervious surface summary statistics. The Complex Systems Research Center at UNH partners with PREP to produce these maps. Visit the NH Granit website for the most recent maps. In the upper left search box type: “impervious surface.”

Stream Buffer Characterization Maps

The Complex Systems Research Center at the University of New Hampshire partnered with PREP to conduct a characterization of 2nd order and higher stream buff mapsstreams within the Great Bay Watershed of coastal New Hampshire. Existing GIS and remote sensing data were used to map a suite of anthropogenic factors, including land use, impervious surface coverage, and transportation infrastructure, within standard buffers around each stream segment. These factors were then analyzed to produce a categorical indicator representing the status of each stream.

Visit the NH Granit Project Website for a map of each town in the NH PREP region.

For more information on all maps contact Jill Farrell.

PREP is part of the U.S. Environmental Protection Agency’s National Estuary Program, a joint program between local, state and federal agencies established under the Clean Water Act with the goal of protecting and enhancing nationally significant estuarine resources. PREP is supported in part by an EPA matching grant and is housed within the School of Marine Science and Ocean Engineering at the University of New Hampshire.