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Hydrologic data for the Potomac Formation in New Castle County, Delaware

Open-File Report 81-916

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Abstract

Hydrologic data for the Potomac Formation in New Castle County, Delaware, consists of records of historical ground-water pumpage , water levels, water quality, and surface-water discharge. Included are well records for 405 wells, and hydrographs of water levels in 86 wells. Pumpage for 20 well fields are reported. Also included are stream-discharge hydrographs for 6 stations for water years 1979 and 1980, and historical low-flow measurements for 22 stations. In the analysis of 23 aquifer tests, transmissivity and storage coefficient values for the Potomac Formation range from 454 to 8480 square feet per day and 0.0026 to 0.000056, respectively. Vertical hydraulic conductivities of confining beds in the Formation range from 0.0083 to 3.2 feet per day. (USGS)

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Hydrologic data for the Potomac Formation in New Castle County, Delaware
Series title:
Open-File Report
Series number:
81-916
Edition:
-
Year Published:
1982
Language:
ENGLISH
Publisher:
U.S. Geological Survey,
Description:
ix, 157 p. :ill., maps ;28 cm.