Comparison of Peak Discharges among Sites with and without Valley Fills for the July 8–9, 2001, Flood in the Headwaters of Clear Fork, Coal River Basin, Mountaintop Coal-Mining Region, Southern West Virginia

U.S. Geological Survey Open File Report 03-133

By Jeffrey B. Wiley and Freddie D. Brogan


In cooperation with the

Office of Surface Mining Reclamation and Enforcement



The effects of mountaintop-removal mining practices on the peak discharges of streams were investigated in six small drainage basins within a 7-square-mile area in southern West Virginia. Two of the small basins had reclaimed valley fills, one basin had reclaimed and unreclaimed valley fills, and three basins did not have valley fills.

Indirect measurements of peak discharge for the flood of July 8-9, 2001, were made at six sites on streams draining the small basins. The sites without valley fills had peak discharges with 10- to 25-year recurrence intervals, indicating that rainfall intensities and totals varied among the study basins. The flood-recurrence intervals for the three basins with valley fills were determined as though the peak discharges were those from rural streams without the influence of valley fills, and ranged from less than 2 years to more than 100 years.




Description of study area

Flood of July 8–9, 2001

Indirect Measurement of Peak Discharges

Comparison of Peak Discharges among Sites in Basins with and without Valley Fills


References Cited


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For additional information write to:


U.S. Geological Survey

District Chief

11 Dunbar Street

Charleston, WV 25301


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