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NAWQA, National Water-Quality Assessment Program; Allegheny-Monongahela River Basin
Steven D. McAuley, Juliane B. Brown, James I. Sams III
1997, Open-File Report 97-246
Surface-water and ground-water quality and aquatic life can be significantly affected by the following principal issues identified in the Allegheny-Monongahela River Basin:Contaminants common to surface and under-ground coal mine discharge such as acidity, iron, aluminum, manganese, and sulfate.Volatile organic compounds (VOC’s), pesti-cides, and nutrients from increased urbanization.Runoff and loading of...
Fire-induced water-repellent soils, an annotated bibliography
M.A. Kalendovsky, S.H. Cannon
1997, Open-File Report 97-720
The development and nature of water-repellent, or hydrophobic, soils are important issues in evaluating hillslope response to fire. The following annotated bibliography was compiled to consolidate existing published research on the topic. Emphasis was placed on the types, causes, effects and measurement techniques of water repellency, particularly with respect to...
Activities of the United States Geological Survey in Pennsylvania
Charles R. Wood (compiler)
1997, Open-File Report 97-640
Since the late 1800's, when the U.S. Geological Survey first established a presence in Pennsylvania, the focus of our work has changed from general hydrologic and geologic appraisals to issue-oriented investigations; from predominantly data collection to a balanced program of data collection, interpretation, and research; and from traditional, hand-drawn mapping...