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- Title
Overflow Risk Analysis for Designing a Nonpoint Sources Control Detention.
- Authors
Chi Hyun Choi; Seonju Cho; Moo Jong Park; Sangdan Kim
- Abstract
This paper presents a design method by which the overflow risk related to a detention for managing nonpoint pollutant sources in urban areas can be evaluated. The overall overflow risk of a nonpoint pollutant sources control detention can be estimated by inherent overflow risk and operational overflow risk. For the purpose of calculating overflow risk, the 3-parameter mixed exponential distribution is applied to describe the probability distribution of rainfall event depth. As a rainfall-runoff calculation procedure required for deriving a rainfall capture curve, the U.S. Natural Resources Conservation Service runoff curve number method is applied to consider the nonlinearity of the rainfall-runoff relation. Finally, the detention overflow risk is assessed with respect to the detention design capacity and drainage time. The proposed overflow risk assessment is expected to provide a baseline to determine quantitative parameters in designing a nonpoint sources control detention.
- Subjects
UNITED States; RISK assessment; PARAMETER estimation; DISTRIBUTION (Probability theory); NATURE reserves; RUNOFF
- Publication
Water Environment Research (10614303), 2012, Vol 84, Issue 5, p434
- ISSN
1061-4303
- Publication type
Article
- DOI
10.2175/106143012X13373550426959