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Dive into the research topics where William J. Wolfe is active.

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Featured researches published by William J. Wolfe.


Physical Geography | 2006

Land-Use Effects on Erosion, Sediment Yields, and Reservoir Sedimentation: A Case Study in the Lago Loíza Basin, Puerto Rico

Allen C. Gellis; Richard M. T. Webb; Sherwood C. McIntyre; William J. Wolfe

Lago Loíza impounded in 1953 to supply San Juan, Puerto Rico, with drinking water; by 1994, it had lost 47% of its capacity. To characterize sedimentation in Lago Loíza, a study combining land-use history, hillslope erosion rates, and subbasin sediment yields was conducted. Sedimentation rates during the early part of the reservoirs operation (1953-1963) were slightly higher than the rates during 1964-1990. In the early history of the reservoir, cropland comprised 48% of the basin and erosion rates were high. Following economic shifts during the 1960s, cropland was abandoned and replaced by forest, which increased from 7.6% in 1950 to 20.6% in 1987. These land-use changes follow a pattern similar to the northeastern United States. Population in the Lago Loíza Basin increased 77% from 1950 to 1990, and housing units increased 194%. Sheetwash erosion measured from 1991 to 1993 showed construction sites had the highest sediment concentration (61,400 ppm), followed by cropland (47,400 ppm), pasture (3510 ppm), and forest (2050 ppm). This study illustrates how a variety of tools and approaches can be used to understand the complex interaction between land use, upland erosion, fluvial sediment transport and storage, and reservoir sedimentation.


River Research and Applications | 2013

Predicting ecological flow regime at ungaged sites: A comparison of methods

Jennifer C. Murphy; Rodney R. Knight; William J. Wolfe; W. S. Gain


Ecohydrology | 2012

Modelling ecological flow regime: an example from the Tennessee and Cumberland River basins

Rodney R. Knight; W. Scott Gain; William J. Wolfe


Water | 2015

Model Calibration Criteria for Estimating Ecological Flow Characteristics

Marc J. P. Vis; Rodney R. Knight; Sandra Pool; William J. Wolfe; Jan Seibert


Ecohydrology | 2013

Ecological limit functions relating fish community response to hydrologic departures of the ecological flow regime in the Tennessee River basin, United States

Rodney R. Knight; Jennifer C. Murphy; William J. Wolfe; Charles F. Saylor; Amy K. Wales


Journal of The American Water Resources Association | 2010

Suspended-sediment concentration regimes for two biological reference streams in middle Tennessee.

Timothy H. Diehl; William J. Wolfe


Ground Water Monitoring and Remediation | 2006

Sampling Strategies for Volatile Organic Compounds at Three Karst Springs in Tennessee

Shannon D. Williams; William J. Wolfe; James J. Farmer


Journal of The American Water Resources Association | 2014

Freshwater Mussel Population Status and Habitat Quality in the Clinch River, Virginia and Tennessee, USA: A Featured Collection

Carl E. Zipper; Braven Beaty; Gregory C. Johnson; Jess W. Jones; Jennifer L. Krstolic; Brett J.K. Ostby; William J. Wolfe; Patricia F. Donovan


Ground Water Monitoring and Remediation | 2002

Soil gas screening for chlorinated solvents at three contaminated karst sites in Tennessee

William J. Wolfe; Shannon D. Williams


Water-Resources Investigations Report | 1999

Effects of land use on upland erosion, sediment transport, and reservoir sedimentation, Lago Loiza basin, Puerto Rico

Allen C. Gellis; R.M. Webb; William J. Wolfe; S.C. McIntyre

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Rodney R. Knight

United States Geological Survey

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Timothy H. Diehl

United States Geological Survey

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W. Scott Gain

United States Geological Survey

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Allen C. Gellis

United States Geological Survey

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Jennifer C. Murphy

United States Geological Survey

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Amy K. Wales

Tennessee Valley Authority

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