Influence of particle size on wet pond effectiveness
Authors: Greb, Steven R.; Bannerman, Roger T.
Source: Water Environment Research, Volume 69, Number 6, September/October 1997 , pp. 1134-1138(5)
Publisher: Water Environment Federation
Abstract:A 5 670-m2 wet detention pond draining a predominantly residential urban area was monitored for flow, suspended solids, bedload, particle-size distribution, and selected pollutants during 16 storm events. Both suspended solids concentrations and particle-size distribution of the suspended solids in runoff water exhibited large variations between storms. Though a portion of particles larger than the pond's critical particle size left the pond, the pond removed 87% of the total suspended solids entering the pond. The relative proportion of clay-size particles increased from 36 to 72%. Sand- and silt-size fractions both decreased. Heavier particulate material saltating along the channel bottom, termed bedload, composed an average of 14% of the total particulate mass or load to the pond. The pond's sediment and associated pollutant removal efficiencies were influenced by influent particle-size distribution.
Document Type: Research article
Publication date: 1997-09-01
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