Ⅰ. Necessity and Purpose of Research
o Research necessity
ㅇClimate change, including temperature rise and changes in the spatiotemporal patterns of precipitation, affects the hydrological cycle and water resource availability, leading to imbalances in water demand and supply.
ㅇIn South Korea, the frequency and severity droughts are projected to increase in the future, posing serious impacts on the water supply system, thus necessitating the consideration of climate change from the planning stage.
ㅇArticle 18 of the Framework Act on Water Management presents ‘responding to climate change’ as one of the basic principles of water management. According to Article 27, it is specified to establish the “Master Plans for National Water Management,” including water management vulnerability response plans for climate change, although there are limitations to its implementation.

o Research objectives
ㅇTo identify technical and institutional limitations that prevent the establishment of water usage plans that consider climate change
ㅇTo propose short-term and long-term technological development and institutional improvement measures to establish water usage plans that consider the effects of climate change
Ⅱ. Climate Change Uncertainty and Water Resources Planning
o Climate change and uncertainty
ㅇ“Uncertainty” denotes the absence of certainty about something, ranging from minor doubt and slight inaccuracy to a complete or certain lack of knowledge. It can be categorized into epistemic or aleatory uncertainty.
ㅇPredictions about climate include both epistemic uncertainty (limitations