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1997
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1. Digital Orthophoto (DOQQ - quarter-quadrangle) for Delaware 1997
1997. U.S. Geologic Survey; Pennsylvania Bureau of Topographic and Geologic Survey. Orthophotos combine the image characteristics of a photograph with the geometric qualities of a map. The primary digital orthophotoquad (DOQ) is a ...
2. Digital Orthophoto (DOQQ - quarter-quadrangle) for West Virginia 1997
1997. U.S. Geologic Survey; Pennsylvania Bureau of Topographic and Geologic Survey. Orthophotos combine the image characteristics of a photograph with the geometric qualities of a map. The primary digital orthophotoquad (DOQ) is a ...
3. Hydric Soils: Chester County, Pennsylvania
1997. U.S. Department of Agriculture, Natural Resources Conservation Service. This data set includes all soil map units that are defined as Hydric in the SSURGO data base.The SSURGO data set is a digital soil survey and is th...
4. Prime Agricultural Soils: Chester County, Pennsylvania
1997. U.S. Department of Agriculture, Natural Resources Conservation Service. This data set represents Prime Agricultural Soils as defined by the County of Chester. The designation equates to any soil map unit designation as ...
5. Small Watersheds: Pennsylvania
1997. Environmental Resources Research Institute. Boundaries of 9,895 watersheds in Pennsylvania indicated in the Pennsylvania gazeteer of streams. These boundaries enclose catchment areas for name...
6. Wetlands - Line: Chester County, Pennsylvania
1997. U.S. Fish & Wildlife Service, National Wetlands Inventory. NWI digital data files are records of wetlands location and classification as defined by the U.S. Fish & Wildlife Service. This dataset is a compil...
7. Wetlands - Point: Chester County, Pennsylvania
1997. U.S. Fish & Wildlife Service, National Wetlands Inventory. NWI digital data files are records of wetlands location and classification as defined by the U.S. Fish & Wildlife Service. This dataset is a compil...