관개용수로의 자동수위측정 자료를 활용한 농업용 저수지 공급량 산정 및 분석

Abstract

KRC (Korea Rural Community Corporation) is in charge of about 3,400 agricultural reservoirs out of 17,240 agricultural reservoirs, and automatic waterlevel gauges in reservoirs and canals were installed to collect reservoir and canal water level data from 2010. In this study, 10-minute water level dataof 173 reservoir irrigation canals from 2016 to 2018 are collected, and discharge during irrigation season was calculated using rating curves. Forestimation of water supply, irrigation water requirement was calculated with HOMWRS (Hydrological Operation Model for Water Resources System),and the summation of reservoir water storage decrease was calculated with daily reservoir storage data from RAWRIS (Rural Agricultural WaterResource Information System). From the results, the total yearly amount of irrigation water supply showed less than 10% difference than the irrigationwater requirement. The regional analysis revealed that reservoirs in Jeollanam-do and Chungcheongnam-do supply greater irrigation water than average. On the contrary, reservoirs in Gyeongsangnam-do and Chungcheongbuk-do supply less than others. This study was conducted with a limited numberof reservoirs compared to total agricultural reservoirs. Nevertheless, it can indicate irrigation water supply from agricultural reservoirs to provideinformation about agricultural water use for irrigation.