• Title/Summary/Keyword: Nam river

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Analysis of Specific Contaminated Status and Pollutant Loads Contribution Rate of the Tributaries in Gumho and Nam River Basin (금호강, 남강 중권역 지류·지천의 상세오염 현황 및 오염기여율 조사)

  • Na, Seungmin;Kwon, Heongak;Kim, Gyeong Hoon;Shin, Dongseok;Im, Tae Hyo
    • Journal of Wetlands Research
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    • v.18 no.4
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    • pp.363-377
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    • 2016

  • This study was investigated the pollutant load, contamination properties, pollution condition of the fine parts of tributary, the influence of Nakdong river watershed and etc. in the tributaries. The contaminated tributaries were that among the Kumho and Nam river or were too far from site of water quality monitoring stations, regularly. As a result, the water quality level was almost similar between Nam and Kumho River, except for certain parameter including TN(Total Nitrogen), Chl-a(Chlorophyll-a) and SS(Suspended Solid) in which Kumho river were 20~120%. The point discharge load(kg/day) and load density ($kg/day/km^2$) of tributaries were different the pollution level according to the flow-rate ($m^3/sec$) and stream influence area($km^2$), and the difference of these was observed highly at Nam river. Specific contamination investigation of tributaries in Nam and Kumho river watershed was conducted from two to nine points of the fine parts of tributaries depending on the confluence sites and shapes. This result observed high at the Dalseocheon and Uriyeongcheon, respectively. Beside, the pollutant load contribution rate of Nakdong watershed was high about 10% at the Dalseocheon and Uiryeongcheon. This was due to the differences of the environments about the industrial complex, metropolis residence property, agricultural cultivation, livestock pen and the downstream of non-point source.

  • https://doi.org/10.17663/JWR.2016.18.4.363 인용 PDF KSCI

Spatial Water Quality Analysis of Main Stream of Nakdong River Considering the Inflow of Tributaries (유입지천을 고려한 낙동강 본류구간의 공간적 수질특성 분석)

  • Kim, Sorae;Kim, Sang Min
    • Journal of Korean Society on Water Environment
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    • v.33 no.6
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    • pp.640-649
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    • 2017

  • The purpose of this study is the analysis of the water quality spatial characteristics for the main stream of Nakdong River in consideration of the tributary inflow. The flow and water quality (BOD, TOC, TP) data for 32 monitoring stations located in the main stream and the tributaries of Nakdong River were collected from 2003 to 2016. From the results of the flow and water quality analyses for each site, a status map of the flow and the water quality for Nakdong River was produced. The water quality of each river section was classified according to seven river-environment standards. The water quality changes in the main stream before and after the confluence were analyzed spatially. As a result, the water quality of Kumho River, in particular the Kumho B to Kumho C section, is the worst among the tributaries. In addition, the water quality grades of the lower streams such as Nam River and Miryang are worse than that of the upper streams of the Nakdong River. In the case of the main stream, the water quality grades of the sections between the Wicheon and Nam River confluences and the section from Nakbon L to Nakbon N are relatively poor.

  • https://doi.org/10.15681/KSWE.2017.33.6.640 인용 PDF KSCI