| Title |
A Study on Selection Method of Management Watershed for Total Pollution Load Control at Tributary |
| Authors |
황하선 ( Ha Sun Hwang ) ; 이성준 ( Sung Jun Lee ) ; 류지철 ( Jichul Ryu ) ; 박지형 ( Ji Hyung Park ) ; 김용석 ( Yong Seok Kim ) ; 안기홍 ( Ki Hong Ahn ) |
| DOI |
https://doi.org/10.15681/KSWE.2016.32.6.528 |
| Keywords |
Agriculture drainage; Load Duration Curve(LDC); Nonpoint Source; Total Pollution Load Control(TPLC); Tributary |
| Abstract |
The purpose of Total Pollution Load Control at Tributary is to get the maximum improvement effect of the water quality through finding the most impaired section of water-body and establishing the proper control measure of pollutant load. This study was implemented to find the optimal management of reach, period, condition, watershed, and pollution source and to propose appropriate reduction practices using the Load duration curve (LDC) and field monitoring data. With the data of measurement, LDC analysis is shown that the most impaired condition is reach V (G4~G5), E group (flow exceedance percentile 90~100%) and winter season. For this reason, winter season and low flow condition should be preferentially considered to restore water quality. The result of pollution analysis for the priority reach and period is shown that agricultual nonpoint source loads from onion and garlic culture are most polluting one. Therefore, it is concluded that agricultural reuse of surface effluent (storm-water runoff with non-point sources) and low impact farming including reducing fertilization and controling the height of drainage outlet are efficient water quality management for this study watershed. |