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Percent-slope classes to characterize the unsaturated zone in North Carolina

Open-File Report 2001-495

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Abstract

This web site contains the Federal Geographic Data Committee-compliant metadata (documentation) for digital data produced for the North Carolina, Department of Environment and Natural Resources, Public Water Supply Section, Source Water Assessment Program. The metadata are for 11 individual Geographic Information System data sets. An overlay and indexing method was used with the data to derive a rating for unsaturated zone and watershed characteristics for use by the State of North Carolina in assessing more than 11,000 public water-supply wells and approximately 245 public surface-water intakes for susceptibility to contamination. For ground-water supplies, the digital data sets used in the assessment included unsaturated zone rating, vertical series hydraulic conductance, land-surface slope, and land cover. For assessment of public surface-water intakes, the data sets included watershed characteristics rating, average annual precipitation, land-surface slope, land cover, and ground-water contribution. Documentation for the land-use data set applies to both the unsaturated zone and watershed characteristics ratings. Documentation for the estimated depth-to-water map used in the calculation of the vertical series hydraulic conductance also is included.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Percent-slope classes to characterize the unsaturated zone in North Carolina
Series title:
Open-File Report
Series number:
2001-495
Edition:
Version 1.0
Year Published:
2001
Language:
ENGLISH
Description:
data set, map