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DOI : ,    Vol.7, No.2, 23 ~ 32, 1999
Title
Effect of Water Quality Improvement with Water Quality Management of Tributary
박성천Sung Chun Park,전진Jin Jun,김해진Hae Jin Kim
Abstract
This study aimed for improving the water quality in the main stream of the Youngsan river, and contributing the recovery of an aquatic ecosystem, and enlarging the utilization of water resources. The extent of water quality improvement was analyzed by investigating the effect of water quality improvement in the main stream according to water management of tributary. Predictions of the water quality were carried out by QUAL2E model in the middle stream of the river extending over 60㎞. 2001year was selected as target year. The extent of water quality improvement was estimated by three ways considering the extent of water management in each tributary and inflow rate of the clean water. The first, it was estimated by applying the extent of water quality management in each tributary of the study basin. The second, it was also estimated by applying inflow rate of the clean water. Finally, it was estimated by applying both of above at the same time. The results showed that the water quality has improved in total research area. But, it showed that the extent has leaved much to be desired in the upper reaches of the river(10∼19㎞). From the result, it was predicted that the water quality had over 3rd grade of water quality in total reach when the BOD concentration was managed below 7.0㎎/ℓ at tributary.
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