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Service Description: This digital product contains gridded estimates of the thickness of the unconfined portion of the Columbia aquifer for Sussex County, Delaware. Mapping was supported by the Delaware Department of Natural Resources and Environmental Control and the Delaware Geological Survey. These grids were produced with the methods described in Andres and Klingbeil (2006). Additional analyses of the hydrogeologic framework and grids are also contained in that report. Briefly, the method to determine the thickness of the aquifer includes assessing the thickness of subsurface materials in descriptive and geophysical logs and using computer-based interpolation to estimate thickness across the study area. Separate grids were determined for eastern and western Sussex County and were merged and smoothed to minimize edge effects. The Thickness grids has 30-m horizontal and 1-ft vertical resolutions. REFERENCES CITED Andres, A. S., and Klingbeil, A. D., 2006, Thickness and transmissivity of the unconfined aquifer, eastern Sussex County, Delaware: Delaware Geological Survey Report of Investigations No. 70, 19 p., 1 plate.
Geology/DGS_UnconfinedAquifer_Thick
Description: This digital product contains gridded estimates of the thickness of the unconfined portion of the Columbia aquifer for Sussex County, Delaware. Mapping was supported by the Delaware Department of Natural Resources and Environmental Control and the Delaware Geological Survey. These grids were produced with the methods described in Andres and Klingbeil (2006). Additional analyses of the hydrogeologic framework and grids are also contained in that report. Briefly, the method to determine the thickness of the aquifer includes assessing the thickness of subsurface materials in descriptive and geophysical logs and using computer-based interpolation to estimate thickness across the study area. Separate grids were determined for eastern and western Sussex County and were merged and smoothed to minimize edge effects. The Thickness grids has 30-m horizontal and 1-ft vertical resolutions. REFERENCES CITED Andres, A. S., and Klingbeil, A. D., 2006, Thickness and transmissivity of the unconfined aquifer, eastern Sussex County, Delaware: Delaware Geological Survey Report of Investigations No. 70, 19 p., 1 plate.
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Spatial Reference: 102100
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LatestVCSWkid(0)
Initial Extent:
XMin: -8429419.1273
YMin: 4643339.3296
XMax: -8354389.1273
YMax: 4716209.3296
Spatial Reference: 102100
(3857)
LatestVCSWkid(0)
Full Extent:
XMin: -8429419.1273
YMin: 4643339.3296
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Spatial Reference: 102100
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LatestVCSWkid(0)
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