| Title |
Efficiency Study of Measurement Method by Flow Duration |
| Authors |
함상인 ( Sang In Ham ) ; 이정환 ( Jeong Hwan Lee ) ; 김대영 ( Dae Young Kim ) ; 하돈우 ( Don Woo Ha ) ; 김윤수 ( Yoon Soo Kim ) ; 정강영 ( Kang-young Jung ) ; 이영재 ( Yeong Jae Lee ) ; 김경현 ( Gyeong Hyeon Kim ) ; 김영석 ( Young Suk Kim ) |
| DOI |
https://doi.org/10.15681/KSWE.2018.34.5.462 |
| Keywords |
Correlation; Flow measurement method; Flow duration; Same time zone data; TDML |
| Abstract |
There are differences in method and cycle of flow rate survey depending on purpose of the operating department. To verify and use results of flow data according to the purpose, flow data of the directly measured and tele monitoring system were compared to verify validity. Flow measurement in the Ministry of Environment is aimed at setting up a standard flow of target water quality for water quality management and securing flow data of low and normal water level seasons for water quality evaluation. In this study, correlation analysis result (R2) of same time zone data by direct measurement and tele monitoring system (TMS) at Seombon D point, a unit watershed of Seomjin river, for six years ('10 ~ '15) according to implementation of Total Daily Maximum Load (TDML) was wading 0.716, boating 0.962 and on bridge 0.943, and effectiveness of measurement method was verified by characteristics of flow duration as a season of dry and low-water; normal and high water are appropriate for wading, boating, and on bridge respectively. Results revealed it is reasonable to use directly measured results using the wading and boating method for low water level and dry seasons, and TMS data for rainy seasons. It can be used important data for future policy decisions. |