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Erosion from an Industrial Forest Road in the Ouachita Mountains of Southeastern Oklahoma

by Donald J. Turton,
Jeffery L. Vowell,



Document Type: Proceeding Paper

Part of: Watershed Management and Operations Management 2000

Abstract:

Erosion from 4 segments of a 2-year old forest road in a 740 ha basin was measured for each of 105 storms that occurred in a 3.5 year period. Two road segments were part of a mid-slope road that was drained by cross drain culverts. The slopes and lengths of the 2 mid-slope segments were 7% and 98 m and 11% and 69 m. The other 2 road segments were part of a crowned ridge road that was drained by turnouts. The slopes and lengths of the 2 ridge segments were 9% and 58 m and 5% and 98 m. Each turnout and culvert outlet was equipped with a plywood sluice box for catching flow and trapping sediment, an H-flume for measuring flow and a Coshocton Wheel sampler for measuring suspended sediment. Rainfall intensities and amounts were measured with weighing bucket rain gages. Sediment deposited in the sluice boxes consisted mainly of coarse sand and gravel. Suspended sediment collected by the Coshocton Wheel consisted of fine sand, silt and clay. Total sediment was defined as the sum of the deposited and suspended sediment.

Subject Headings: Highways and roads | Suspended sediment | Sediment | Flow measurement | Forests | Erosion | Drainage | Oklahoma | United States

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