GRANIT Home GRANIT Header





GIS Event Calendar
December
12
3456789
101112131415
16
17181920212223
24252627282930
31



GRANIT Metadata for Impervious Surfaces in Southern York County, Maine - 2005

GRANIT Metadata for Impervious Surfaces in Southern York County, Maine - 2005

Title: Impervious Surfaces in Southern York County, Maine - 2005
Time Period of Content: 10/03/2005 Initial Publication Date: 12/31/2008
Originator: Complex Systems Research Center, University of New Hampshire
Abstract:
Impervious surface acreage estimates for 2005 were developed for 11 towns in southern York County, Maine. Data were developed using a combination of subpixel and traditional image classification techniques applied to Landsat 5 Thematic Mapper (TM) imagery. Additionally, road centerline data from the Maine Department of Transportation were "burned in" to the data to capture narrow, linear features where pavement exists. Impervious surface acreage is mapped in percent ranges by individual grid cell. Users may generate area estimates by factoring the cell size (8742.25 sq. ft. or .2 acres) by the low, midpoint, or high end of the assigned range. Two related data sets, Impervious Surfaces in Southern York County, Maine - 1990 and Impervious Surfaces in Southern York County, Maine - 2000, are also available. Derived from similar data and using similar techniques, they provide prior estimates of impervious surface coverage. In addition, the southern Maine impervious data sets were developed to extend existing impervious surface data sets (1990, 2000, and 2005) for 48 towns in coastal New Hampshire (also available from the GRANIT database). Collectively, these data sets provide comprehensive coverage of the towns in the Piscataqua Region Estuaries Partnership.
Theme Keywords: Impervious Surfaces, Land Cover, Land Use, Water Quality, Remote Sensing, Classification, Subpixel
Full Metadata and Data Download

CSRC EOS UNH Send Email to GRANIT Directions to Morse Hall Contact Bar