• Title/Summary/Keyword: uncontrolled detention facility

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The Analysis of Critical Duration of uncontrolled single detention facility in Small Catchment (소규모 유역에서 자연방류형 단일저류지의 임계지속기간 분석)

  • Park, Jong-Young;Shin, Chang-Dong;Lee, Jung-Sik
    • Journal of the Korean Society of Hazard Mitigation
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    • v.5 no.2 s.17
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    • pp.17-28
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    • 2005
  • The objective of this study is to evaluate the critical duration between detention facility and flood control facility of small size catchment. 4 small size catchments are applied for hydrological analysis and rainfall excess is computed by using the NRCS Runoff Curve Number method. The critical duration of detention facility and flood control facility is evaluated using the concept of allowable release rate. The conclusions studied in this study are as follows; (1) The type of temporal pattern of design rainfall which causes maximum storage ratio has resulted in Huff's 2 quartile in case of the use of the concept of allowable release rate. (2) Based on (1) of conclusion, the critical durations of flood control facility are similar to those of detention facility, which is used for uncontrolled single detention pond.