| Title |
An Analysis of First Flush Phenomenon of 3 Catchment area in Lake Sihwa Watershed during Rainfall-Runoff Events |
| Authors |
김세원 ( Sea Won Kim ) ; 오종민 ( Jong Min Oh ) |
| Keywords |
First flush phenomenon; Mass first flush ratio; Non-point source; Runoff |
| Abstract |
Lake Sihwa has a very unique watershed environment, surrounded by industrial, urban and rural catchment area with different land use. The first flush phenomenon was investigated in 3 catchment area. 4TG, representing the industrial area, shows rapid discharges of highly concentrated pollutants during the early stages of a storm and it is indicating a strong first flush effect. At AS, representing the urban area, the pollutant concentration reached its peak approximately 2~3 hours after the start of storm, which is a strong first flush effect did not appear. JJB and MS represent the rural areas, the PEMC analysis results suggest that highly concentrated pollutants were discharged during the middle and latter stages of a storm, instead of early pollutant runoff due to the effects of rainwater runoff. |