Runoff curve numbers for loose-dumped spoil in the Cumberland Plateau of eastern Kentucky

Timothy J. Taylor, Carmen T. Agouridis, Richard C. Warner, Christopher D. Barton

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

Excess compaction occurs through the use of traditional surface mining reclamation techniques, resulting in low infiltration rates and subsequently high peak flows and runoff volumes. The incorporation of loose-dumped spoil into the reclamation process has been shown to promote tree growth; however, designers have little information regarding the probable hydrologic consequences (PHC) associated with this spoil disposal method. To better understand the hydrologic effects of reclaiming mined lands using loose-dumped spoil, curve numbers (CN) were developed for both a steeply sloping, forested watershed in eastern Kentucky and six, 0.4 ha test cells comprised of three types of loose-dumped spoil: (1) brown, weathered sandstone, (2) grey, unweathered sandstone and (3) a mixture of both sandstones and shale. The spoil was placed in accordance with the Forestry Reclamation Approach (FRA). Results of this project indicate that the mean CN for loose-dumped spoil was equivalent to the mean CN for the forested watershed.

Original languageEnglish
Pages (from-to)103-120
Number of pages18
JournalInternational Journal of Mining, Reclamation and Environment
Volume23
Issue number2
DOIs
StatePublished - 2009

Bibliographical note

Funding Information:
The authors acknowledge the assistance provided by the staff at Appalachian Fuels and Robinson Forest. Special thanks are given to Mr. Robert Addington, Mr. Patrick Angel, Mr. Christopher Conn and Mr. Alex Fogle. The authors also gratefully acknowledge the funding provided by the United States Department of Forestry and the United Stated Department of Energy, which enabled this research to be conducted.

Keywords

  • Curve number
  • Hydrologic response
  • Loose-dumped spoil
  • Reclamation

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Geology
  • Earth-Surface Processes
  • Management of Technology and Innovation

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