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http://dx.doi.org/10.7857/JSGE.2021.26.1.076

Evaluation on Maximum Irrigation Amounts of Groundwater Keeping up with a Demand During Short-term Drought  

Lee, Byung Sun (Rural Research Institute, Korea Rural Community Corporation)
Myoung, Wooho (Rural Research Institute, Korea Rural Community Corporation)
Lee, Gyusang (Rural Research Institute, Korea Rural Community Corporation)
Song, Sung-Ho (Jeju Regional Headquater, Korea Rural Community Corporation)
Publication Information
Journal of Soil and Groundwater Environment / v.26, no.1, 2021 , pp. 76-87 More about this Journal
Abstract
Groundwater is considered to be the best water resource to solve water shortage problems during drought periods. Even though excessive pumping (overdraft) during short-period may give an unprofitable effect on groundwater hydrology, it has a primary role to solve a lack of water resources and to maintain incomes of farmers. This study evaluated maximum irrigation amounts of groundwater to each local-government and province during drought periods. Maximum irrigation amounts of groundwater were evaluated using cumulative groundwater usage data of each local-government during normal and drought years. Maximum irrigation amounts of groundwater during drought periods would be roughly identified as approximately 1.3 times more than the exploitable amounts of groundwater resources for each local-government. Drawdown-limitation depth on groundwater levels at each monitoring well was determined by transforming the maximum irrigating amounts into degree of change on levels. Universal limitation depth of drawdown on groundwater levels was evaluated to be approximately three times of annual fluctuating range on groundwater levels for each monitoring well. Systematic response on groundwater demands with abiding by drawdown-limitation depth can attain an optimal irrigation of groundwater resources during short-term drought.
Keywords
Drought; Groundwater; Maximum irrigation amounts; Drawdown-limitation;
Citations & Related Records
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