Identification of probability distribution for water quality constituents from specific land use is important to achieve successful implementation of TMDL program. In this 3-year study, distribution of discharge and BOD(Biological Oxygen Demand) concentration from paddy rice fields were monitored. Four probability distributions, normal, log-normal, Gamma and Weibull were fitted and the goodness-of-fit was assessed using probability plots and Kolmogorov-Smirnov test. EMCs of BOD in runoff from paddy field ranged 0.37 to 7.99 mgL -1 , and all four probability distributions were acceptable. But the normal distribution would be preferred for BOD from paddy fields considering nature of straight forward application.

Abstract
 1. 서 론
 2. 재료 및 방법
  2.1. 시험지구 및 시료채취
  2.2. EMC 분석
  2.3. 확률 분포형
  2.4. 적합도 검정
 3. 결과 및 고찰
  3.1. 유량 및 강우사상평균 농도
  3.2. 적정 확률분포형 파악을 위한 Kolmogorov-Smirnov
  3.3. 확률분포에 따른 BOD EMC
 4. 결 론
 참 고 문 헌

• 진소현(전남대학교 농업생명과학대학 지역․바이오시스템공학과) | So-Hyun Jin (Department of Rural & Bio-systems Engineering, Chonnam National University)
• 윤광식(전남대학교 농업생명과학대학 지역․바이오시스템공학과) | Kwang-Sik Yoon (Department of Rural & Bio-systems Engineering, Chonnam National University) Corresponding Author
• 최우정(전남대학교 농업생명과학대학 지역․바이오시스템공학과) | Woo-Jung Choi (Department of Rural & Bio-systems Engineering, Chonnam National University)
• 최동호(전남대학교 농업생명과학대학 지역․바이오시스템공학과) | Dong-Ho Choi (Department of Rural & Bio-systems Engineering, Chonnam National University)
• 정재운(농어촌공사 농어촌연구원) | Jae-Woon Jung (Rural Research Institute, Korea Rural Community & Agriculture Corporation)
• 김상돈(국립환경과학원 영산강물환경연구소) | Sang-Don Kim (Yeongsan River Environment Research Laboratory, National Institute of Environmental Research)
• 강재홍(국립환경과학원 영산강물환경연구소) | Jae-Hong Kang (Yeongsan River Environment Research Laboratory, National Institute of Environmental Research)
• 최유진(국립환경과학원 수질총량관리센터) | Yu-Jin Choi (Water Management Research Division, National Institute of Environment Research)