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Estimation of Nonpoint Discharge Coefficient for the Management of Total Maximum Daily Load - Rainfall Discharge Ratio on the Specific Design Flow  

Park, Jundae (Water Pollution Cap System Division, Environmental Cap System Research Department, National Institute of Environmental Research)
Park, Juhyun (Water Pollution Cap System Division, Environmental Cap System Research Department, National Institute of Environmental Research)
Rhew, Doughee (Water Pollution Cap System Division, Environmental Cap System Research Department, National Institute of Environmental Research)
Jeong, Dongil (Water Pollution Cap System Division, Environmental Cap System Research Department, National Institute of Environmental Research)
Publication Information
Journal of Korean Society on Water Environment / v.24, no.4, 2008 , pp. 452-457 More about this Journal
Abstract
Nonpoint source (NPS) pollution is caused by rainfall moving over and through the ground. As the runoff moves, it picks up and carries away various pollutants from NPS. The discharge pattern of NPS pollutant loads is affected by the distribution of the rainfall during the year. This study analysed relationship between the rainfall event and the stream flow rate, and estimated the rainfall discharge ratio on the specific design flow which can be used as nonpoint discharge coefficient for the estimation of NPS pollution load. It is considered that nonpoint discharge coefficient can be effectively used for the calculation of NPS pollution load at the time of water quality modelling for the management of Total maximum daily load (TMDL).
Keywords
Design flow; Nonpoint discharge coefficient; Nonpoint source(NPS); Rainfall discharge ratio; Total maximum daily Load(TMDL);
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