- A Note on Estimating and Managing Groundwater Reserves
- Lee, Byung Sun;Park, Jong Hwan;Myoung, Wooho;Son, Joohyeong;Lee, Sanghaw;Shim, Gyuseong;Song, Sung-Ho;
- Rural Research Institute, Korea Rural Community Corporation;Rural Research Institute, Korea Rural Community Corporation;Rural Research Institute, Korea Rural Community Corporation;Gyeoungnam Regional Headquarter, Korea Rural Community Corporation;Gyeounggi Regional Headquarter, Korea Rural Community Corporation;Gyeoungnam Regional Headquarter, Korea Rural Community Corporation;Rural Research Institute, Korea Rural Community Corporation;
- 지하수 부존량 평가와 관리에 대한 소고
- 이병선;박종환;명우호;손주형;이상화;심규성;송성호;
- 한국농어촌공사 농어촌연구원;한국농어촌공사 농어촌연구원;한국농어촌공사 농어촌연구원;한국농어촌공사 경남지역본부;한국농어촌공사 경기지역본부;한국농어촌공사 경남지역본부;한국농어촌공사 농어촌연구원;
Abstract
This study was conducted to estimate groundwater reserves within a designated depth. Three methods were applied to one representative county in southern Gyeongsang province, South Korea, to estimate the groundwater reserves in the aquifers. Estimated amounts of groundwater reserves in the region ranged from $20.2{\times}10^9m^3$ to $68.7{\times}10^9m^3$ (average $37.9{\times}10^9m^3$ ). Groundwater recharge obtained with a recharge ratio of 16.6% was $1.1{\times}10^9m^3/year$ . Exploitable groundwater with an assumption of decadal-cycle minimal rainfall of 977.0 mm/year was approximated as 72% ($0.8{\times}10^9m^3/year$ ) of the total replenished water by recharge. The volume of recharge and exploitable water accounted for only 1.1% and 0.8% of groundwater reserves, respectively, which indicates substantial capacity of the reservoir to supply groundwater in an event of unexpected droughts. Nonetheless, each groundwater well should strictly comply with its allocated pumping rate to avoid alluvial groundwater depletion.
Keywords: Groundwater reserves;Recharge amounts;Exploitable groundwater;Droughts;Depletion;
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