Nebraska has a continental climate with hot summers and cold winters, which leads to high evaporation rates and low precipitation. Major surface flows include the Platte River, Republican River, and Niobrara River, which are all tributaries of the Missouri River. Major reservoirs and dams include the Kingsley Dam and Lake McConaughy on the Platte River. The state's hydrology is heavily influenced by the Ogallala Aquifer, which is the primary source of irrigation water for agriculture. Snowpack in the Rocky Mountains also contributes to the state's water supply. Nebraska is prone to flooding, with significant events occurring in recent years, particularly along the Platte River. Sustainable water management practices are necessary to address the state's water challenges.