https://eprints.nwisrl.ars.usda.gov/id/eprint/338 2017-02-02T16:17:44Z info:eu-repo/semantics/descriptiveMetadata https://eprints.nwisrl.ars.usda.gov/id/eprint/338/ Irrigation Water Salt Concentration Influences on Sediment Removal by Ponds Robbins, C.W. Brockway, C.E. Sediment Mass Import - autoclassified (may be erroneous) Irrigation water salt concentration effects on sediment pond efficiency were investigated to demonstrate the necessity of considering the salt concentration in the irrigation waters when designing sediment retention ponds. The influence of dissolved salt was determined by adding concentrated CaCl2 solutions to three ponds and then measuring electrical conductivities and sediment concentrations at the pond outlets. Increasing the salt concentration increased the sediment removal efficiencies when the retention time in the pond exceeded 1 hour or the inflow sediment concentration exceeded 500 ppm for the three soils studied. Adding salt to laboratory soil sample suspensions increased the settling rates for the two soils studied. That data indicate that the salt concentration in irrigation water is an important factor in determining sediment pond size and retention time. Using pond design criteria obtained from sediment ponds receiving water of a given salt concentration to design ponds that will receive water with a different salt concentration should include adjustments for salt concentration differences. A simple laboratory test is suggested to predict which soils will respond to irrigation water salt concentration changes that are likely to result in sediment pond efficiency changes. 1978 Article NonPeerReviewed application/pdf en https://eprints.nwisrl.ars.usda.gov/id/eprint/338/1/405.pdf Robbins, C.W. and Brockway, C.E. (1978) Irrigation Water Salt Concentration Influences on Sediment Removal by Ponds. Soil Science Society of America Journal. 42(3):478-481. 0405 0405 info:eu-repo/semantics/objectFile info:eu-repo/semantics/humanStartPage