||Developing Impervious Surface Estimates for Coastal New Hampshire. A Final Report to The New Hampshire Estuaries Project.
D. Justice ;
||New Hampshire Univ., Durham. Inst. for the Study of Earth, Oceans and Space.; New Hampshire Office of State Planning, Concord.; Environmental Protection Agency, Research Triangle Park, NC. National Estuary Program.
Coastal areas ;
New Hampshire ;
Land use ;
Satellite imagery ;
Thematic mappers(Landsat) ;
Water quality ;
Environmental impacts ;
Water pollution sources ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||Estimates of impervious surface acreage in 1990 and 2000 were generated for a 48-town region in coastal New Hampshire, including the 43 towns within Zones A and B of the New Hampshire Estuaries Project (NHEP) Area. The estimates were based on applying both traditional and subpixel classification techniques to 30-meter Landsat 5 Thematic Mapper (TM) and Landsat 7 Enhanced Thematic Mapper Plus (ETM+) satellite image data. The classifications indicated that 4.3% (31,233 acres) of the study area was impervious in 1990, with an increase to 6.3% (45,445 acres) impervious coverage in 2000. At the subwatershed level, the Portsmouth Harbor subwatershed recorded the highest percentage of impervious surface acreage in both 1990 and 2000, with 19.8% coverage (2,310 acres) and 25.5% coverage (2,975 acres) respectively.
||Sponsored by New Hampshire Office of State Planning, Concord. and Environmental Protection Agency, Research Triangle Park, NC. National Estuary Program.
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||47C; 48C; 43F; 68D