THE MONTHLY IMPACT OF NONPOINT SOURCES TO HOEDONG LAKE KOREA

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Lake Hoedong, located in the south of Korea peninsula, is a small, shallow, eutrophic lake, which is an important water supply source for the city of Pusan. Although point sources are discharged after secondary treatment, there has been a steady deterioration of lake water quality. Removal of point sources alone may produce no measurable improvement in the lake condition because of nonpoint sources. So the objectives of this paper are to quantify the nonpoint sources and to assess the impact to the lake. Nutrient inputs from point sources are unlikely to have been altered significantly, but nonpoint nutrient inputs have great monthly variation. Contribution of nonpoint sources to the external input of total phosphorus is almost 67% in the wet season and 19% in the dry season. Assuming that a substantial nonpoint source reduction is made by the Hoedong Lake basin, we attempt to estimate the effect of the lake water quality by mass balance equation. The nonpoint source impact to Hoedong Lake water quality is more than 60% in the wet season.
Publisher
Iwa Publishing
Issue Date
1993
Language
English
Article Type
Article; Proceedings Paper
Citation

WATER SCIENCE AND TECHNOLOGY, v.28, no.5, pp.137 - 142

ISSN
0273-1223
URI
http://hdl.handle.net/10203/56819
Appears in Collection
RIMS Journal Papers
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