Impact of Groundwater Abstraction on Hydrological Responses during Extreme Drought Periods in the Boryeong Dam Catchment, Korea

Groundwater withdrawal results in a significant depletion of groundwater storage due to the frequency and intensity droughts increasing irrigation demands. To ensure sustainable use resources, it is necessary accurately simulate behavior catchments using surface–groundwater integrated runoff model. Most existing catchment models have been applied surface water management; thus, analysis studies that consider interaction between are required. Due intensive agricultural sector Korea position rice as staple Korean diet, more than 50% abstraction used for irrigation. Therefore, very important understand hydrological interrelationships areas entire watershed. This study aimed compare analyze levels mountainous paddy field Boryeong Dam through simulation Catchment Hydrologic Cycle Assessment Tool model, responses wet years (2010–2012) dry (2014–2016). The maximum difference monthly level compared was 1.07 m at forest 0.37 catchment. These indicate impact drought on not catchments; however, slows recovery before rainy season, thereby limiting