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Keyword: sediment

Validation of the Unit Stream Power Erosion and Deposition (USPED) Model at Fort Hood, Texas

Publications Posted on: December 11, 2020
Soil erosion has been recognized as a significant environmental malady in the United States for over 200 years. Numerous attempts have been made to model and quantify the issue, yet significant issues remain that hinder the accuracy and effectiveness of such models.

Erratum: Basin-scale availability of salmonid spawning gravel as influenced by channel type and hydraulic roughness in mountain catchments

Publications Posted on: March 12, 2020
A general framework is presented for examining the effects of channel type and associated hydraulic roughness on salmonid spawning-gravel availability in mountain catchments. Digital elevation models are coupled with grain-size predictions to provide basin-scale assessments of the potential extent and spatial pattern of spawning gravels.

Watershed Management Research Meeting: Manitou Experimental Forest

Publications Posted on: February 19, 2020
This meeting was planned to allow a review of the measurements and processes involved in watershed research. The agenda lists topics and discussion leaders. The discussion should come from all those present. We are fortunate to have with us Bernie Frank, Ted Osborne, and Hank Sims from the Washington Office; George Hardaway and Alan Iamb from Region 3; and Jack McNutt from Region 2. We'll expect to hear from them throughout the meeting.

Wildfire contribution to desertification at local, regional, and global scales [Chapter 8]

Publications Posted on: July 08, 2019
Wildfire is a natural phenomenon that began with the development of terrestrial vegetation in a lightning-filled atmosphere of the Carboniferous Period (307-359 million years before the present). Sediment deposits from that era contain evidence of charcoal from post-fire ash slurry flows. As human populations developed in the Pleistocene and Holocene epochs, mankind transformed fire into one of its oldest tools.

Soil carbon and nitrogen eroded after severe wildfire and erosion mitigation treatments

Publications Posted on: July 08, 2019
Erosion of soil carbon (C) and nitrogen (N) following severe wildfire may have deleterious effects on downstream resources and ecosystem recovery. Although C and N losses in combustion and runoff have been studied extensively, soil C and N transported by post-fire erosion has rarely been quantified in burned landscapes.

Effect of forest cover on water treatment costs

Science Spotlights Posted on: October 06, 2017
Intact forests preserve water quality in our lakes and streams, providing cost savings for municipal water providers. American water utilities spend millions of dollars protecting and improving their source water to ensure the delivery of safe drinking water. Knowing the value of this green infrastructure helps communities and land managers better steward the watersheds we rely on and helps the Forest Service better engage with stakeholders in watershed protection.

Rill erosion in burned and salvage logged western montane forests: Effects of logging equipment type, traffic level, and slash treatment

Publications Posted on: November 07, 2016
Following wildfires, forest managers often consider salvage logging burned trees to recover monetary value of timber, reduce fuel loads, or to meet other objectives. Relatively little is known about the cumulative hydrologic effects of wildfire and subsequent timber harvest using logging equipment.

Silt fences: An economical technique for measuring hillslope soil erosion

Publications Posted on: May 12, 2016
Measuring hillslope erosion has historically been a costly, time-consuming practice. An easy to install low-cost technique using silt fences (geotextile fabric) and tipping bucket rain gauges to measure onsite hillslope erosion was developed and tested. Equipment requirements, installation procedures, statistical design, and analysis methods for measuring hillslope erosion are discussed.

Watershed-scale evaluation of the Water Erosion Prediction Project (WEPP) model in the Lake Tahoe basin

Publications Posted on: April 21, 2016
Forest managers need methods to evaluate the impacts of management at the watershed scale. The Water Erosion Prediction Project (WEPP) has the ability to model disturbed forested hillslopes, but has difficulty addressing some of the critical processes that are important at a watershed scale, including baseflow and water yield.

Sediment production from forest roads in western Oregon

Publications Posted on: January 12, 2016
Prevention and estimation of soil erosion from forest roads requires an understanding of how road design and maintenance affect sediment production. Seventy-four plots were installed on forest roads in the Oregon Coast Range to examine the relationship between sediment production and road attributes such as distance between culverts, road slope, soil texture, and cutslope height.