Water Ouantity/Quality Analysis and Pollutants Load Estimation in Sillicheon River, Jumunjin, Gangneung

강릉 신리천의 수량 수질 분석 및 오염부하량 추정

  • 조홍연 (한국해양연구원 연안·항만공학연구본부) ;
  • 김창일 (건국대학교 토목공학과) ;
  • 이달수 (한국해양연구원 연안·항만공학연구본부)
  • Published : 2004.12.01


Water qualities (WQ) were measured biweekly from April 2nd to October 29th, 2003 in Sillicheon flowing into the entrance of Jumunjin Harbour and daily water quantities (river discharges) were estimated by the TANK model which has been widely used to compute the runoff discharges in the ungauged watersheds. The spatial and temporal change patterns of the measured WQs were analysed in detail and the correlation between rainfall - WQ and river discharge - WQ were also analysed. From this results, it is found that the correlation coefficient between BOD concentration and rainfall is 0.75 and between the SS concentration and 2-days river discharge is 0.36. The correlation between the COD, TN, TP in the station of Silli Lower Bridge and rainfall runoff quantity was analysed as un-correlated items. As a consequence, the estimated BOD and SS pollutants loads are reliable and show good change patterns even though the accuracy of SS pollutants load is slightly low. The estimated COD, TN and TP pollutants loads, however, can be used only as the reference or averaged values. In order to analyse more accurately the temporal change patterns of these items, more-detailed researches considering the artificial effects and landuse patterns are highly required.


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