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United States Department of Agriculture

Agricultural Research Service

Research Project: EFFECTIVENESS OF WATERSHED LAND-MANAGEMENT PRACTICES TO IMPROVE WATER QUALITY Title: Drop-box Weir for Measuring Flow Rates Under Extreme Flow Conditions

Author
item Bonta, James

Submitted to: Journal of Soil and Water Conservation
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: June 3, 2008
Publication Date: July 1, 2008
Citation: Bonta, J.V. 2008. Drop-box Weir for Measuring Flow Rates Under Extreme Flow Conditions. Journal of Soil and Water Conservation. 63(4):134A.

Interpretive Summary: Sediment and large rocks often are transported in runoff during extreme events. The sediment can deposit in a runoff-measuring structure and give erroneous readings. The drop-box weir (DBW) is one of only a few flow-measuring devices capable of measuring sediment-laden flows. Recent studies have extended its utility from large watersheds to small plots and watersheds. Furthermore, recent hydraulic studies have guided adaptation of the Coshocton wheel, a proportional sampler, for use with the configuration of the DBW used on runoff plots. This article presents a short history of the development of the DBW and it use with the Coshocton wheel on runoff plots in a study of application of manure on frozen soil. It also lists other studies where the DBW has been used.

Technical Abstract: Sediment and large rocks often are transported in runoff during extreme events. The sediment can deposit in a runoff-measuring structure and give erroneous readings. The drop-box weir (DBW) is one of only a few flow-measuring devices capable of measuring sediment-laden flows. Recent studies have extended its utility from large watersheds to small plots and watersheds. Furthermore, recent hydraulic studies have guided adaptation of the Coshocton wheel, a proportional sampler, for use with the configuration of the DBW used on runoff plots. This article presents a short history of the development of the DBW and it use with the Coshocton wheel on runoff plots in a study of application of manure on frozen soil. It also lists other studies where the DBW has been used.

Last Modified: 11/26/2014
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