Ground-water levels and water-quality records from 2 networks of 35 privately-owned wells used to supply water to homes were sampled as part of the NAWQA Program in the ALMN Study Unit. A 30-site network was designed to represent wells downgradient from reclaimed surface coal mines. Additionally, a second 5-site network of reference sites was designed to represent wells not affected by coal mining land uses. All wells are within a subarea of the Appalachian Plateau Physiographic Province. The subarea is limited to basins underlain by Pittsburgh Series rocks of upper Pennsylvanian and lower Permian Age. The Pittsburgh Series rocks contain the greatest quantity of commercially available coal of the carboniferous rocks of the Mississippian, Pennsylvanian, and Permian ages. The network includes 12 counties in western Pennsylvania, 8 counties in West Virginia, and 1 county in Maryland. The wells were sampled to assess the effects of reclaimed surface mines on ground-water quality. This sampling is termed a Land-Use Study for the NAWQA Program. Field constituents were measured and water samples collected for laboratory analysis of nutrients, major ions, radon, and volatile organic compounds (VOC's).
A map showing the location of the wells sampled during the Mining Land-Use Study is provided: