title: Urban nonpoint source pollution buildup and washoff models for simulating storm runoff quality in the Los Angeles County.
abstract: Many urban nonpoint source pollution models utilize pollutant buildup and washoff functions to simulate storm runoff quality of urban catchments. In this paper, two urban pollutant washoff load models are derived using pollutant buildup and washoff functions. The first model assumes that there is no residual pollutant after a storm event while the second one assumes that there is always residual pollutant after each storm event. The developed models are calibrated and verified with observed data from an urban catchment in the Los Angeles County. The application results show that the developed model with consideration of residual pollutant is more capable of simulating nonpoint source pollution from urban storm runoff than that without consideration of residual pollutant. For the study area, residual pollutant should be considered in pollutant buildup and washoff functions for simulating urban nonpoint source pollution when the total runoff volume is less than 30 mm.
authors.affiliation: State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China. wanglong08@mails.tsinghua.edu.cn
authors.forename: Long
authors.initials: L
authors.lastname: Wang
authors.forename: Jiahua
authors.initials: J
authors.lastname: Wei
authors.forename: Yuefei
authors.initials: Y
authors.lastname: Huang
authors.forename: Guangqian
authors.initials: G
authors.lastname: Wang
authors.forename: Imran
authors.initials: I
authors.lastname: Maqsood
mesh_terms: D004784:Environmental Monitoring; D015141:Los Angeles; D008962:Models, Theoretical; D011891:Rain; D014506:Urban Renewal; D014874:Water Pollutants, Chemical / Q000032:analysis; D014876:Water Pollution
chemical_list: D014874:Water Pollutants, Chemical