| Title |
Water Quality Management using WASP5 & WASP Builder for a Basin of an Agricultural Reservoir |
| Authors |
정팔진 ( Paul Gene Chung ) ; 고홍석 ( Hong Seok Goh ) ; 현미희 ( Mi Hee Hyun ) ; 이은주 ( Eun Ju Lee ) |
| Keywords |
Gyoung Choen reservoir; WASP5; WASP Builder; Calibration; Verification |
| Abstract |
Water quality modeling was performed for the purpose of diagnosis and prediction of water quality in Gyoung Choen reservoir, using EUTRO5/WASP Build model. WASP Builder is capable of visual display in window and it has an advantage of updating and modification for data. Field data of 1992, Spring, Summer, and Fall, were used to calibrate model and these results were validated using data of 2000, Spring, Summer, and Fall. The reservoir was divided into 4 epilimnion segments. Water quality system for modeling were consist of BOD, Chlorophyll-a, DO, NH₃-N, NO₃-N, T-N, PO₄-P. T-P. The results of water quality modelling using EUTRO5/WASP Builder, a range of the Correlation for calibration of BOD, T-N, T-P, and Chlorophyll-a according to three seasons are 0.63~0.90, 0.81~0.97, 0.75~0.98, and 0.77~0.98 respectively. And the correlation between simulated and observed values for verification of BOD, T-N, T-P, and Chlorophyll-a according to three seasons are 0.93. 0.94, 0.81, and 0.80 respectively. Among the pollutant sources for a basin of the Gyoung Choen reservoir, generated amount of livestock is the highest and BOD, T-N, T-P of generated loading percentage are 94%, 81%, and 95%. So, we suppose that inflow load amount will decrease 50% and increase 50% only livestock about current load amount. If increasing load amount of livestock 50% in segment 2 and 3, BOD, T-N, and T-P simulated increasing to range of 0.02~0.15㎎/ℓ, 0.029~0.08㎎/ℓ, 0.011~0.029㎎/ℓ in comparison with current water quality |