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Layer: potomac_001_depthtotop_22 (45)

Name: potomac_001_depthtotop_22

Display Field: source_organization

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Description: <DIV STYLE="text-align:Left;"><P STYLE="font-size:16ptmargin:7 0 7 0;"><SPAN>A number of maps show the elevation at the top of the Potomac aquifer (Gill and Farlekas, 1969; Brown and others, 1972; Trapp and Meisler (1992; Trapp, 1992). We chose to digitize the map of Trapp and Meissler (1992; their plate 7B) because it covers the entire region and clearly defines the hydrostratigraphic unit.</SPAN></P><DIV><P><SPAN /></P></DIV></DIV>

Copyright Text: Trapp, H., Jr., and Meisler, H., 1992, The regional aquifer underlying the northern Atlantic coastal plain in parts of North Carolina, Virginia, Maryland, Delaware, New Jersey, and New York—summary: U.S. Geological Survey, Professional Paper 1404A, 33 p., 11 plates.

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YMin: 4112281.893600002
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YMax: 4893315.996100001
Spatial Reference: 102100  (3857)



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