Skip to Main Content
Monitoring sediment production from forest road approaches to stream crossing in the Virginia PiedmontAuthor(s): Kristopher R. Brown; W. Michael Aust; Kevin J. McGuire
Source: Proceedings of the 17th biennial southern silvicultural research conference. e–Gen. Tech. Rep. SRS–203. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station. 551 p
Publication Series: General Technical Report (GTR)
Station: Southern Research Station
PDF: Download Publication (522.95 KB)
DescriptionReopening of abandoned legacy roads is common in forest operations and represents a reduced cost in comparison to new road construction. However, legacy roads may have lower road standards and require additional best management practice (BMP) implementation upon reopening to protect water quality. Silt fences and elevation measurements of trapped sediment were used to quantify annual sediment delivery rates for reopened bare and existing gravel forest road approaches to stream crossings in the Virginia Piedmont. Additionally, rainfall simulation experiments were performed on reopened legacy road stream crossing approaches to quantify the cost-effectiveness of a range of gravel surface coverage for control of total suspended solids (TSS) concentration from road surface runoff during storm events. In the sediment trap study, mean annual sediment delivery for the reopened bare approaches (98 Mg ha-1 year -1) was 7.5 times greater than that of the gravel approaches (13 Mg ha-1 year -1). Problem road approaches were associated with inadequate water control (greater than 75 m between water control structures) and 90 to 100 percent bare soil conditions throughout the year. Median TSS concentration of road surface runoff (g L-1) for the Bare treatment rainfall simulations (2.34 g L-1; 90 to 100 percent bare soil conditions) was 1.8 times greater than Gravel 1 (1.32 g L-1; 25 to 50 percent gravel surface coverage) and 3.3 times greater than Gravel 2 (0.72 g L-1; 50 to100 percent gravel surface coverage). Gravel surfacing of the road approaches cost $10.27/m of road length for a gravel depth of 7.6 cm and local cost of $27.78/Mg ($25 per ton).
- You may send email to email@example.com to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationBrown, Kristopher R.; Aust, W. Michael; McGuire, Kevin J. 2015. Monitoring sediment production from forest road approaches to stream crossing in the Virginia Piedmont. Proceedings of the 17th biennial southern silvicultural research conference. e–Gen. Tech. Rep. SRS–203. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station. 551 p
- The effect of increasing gravel cover on forest roads for reduced sediment delivery to stream crossings
- Differences in Surface Water Quality Draining Four Road Surface Types in the Southern Appalachians
- Infiltration and interrill erosion rates after a wildfire in western Montana, USA
XML: View XML