Missouri has a humid continental climate, with precipitation occurring throughout the year. Major surface flows in the state include the Missouri River, Mississippi River, and the Osage River. Major reservoirs and dams include the Truman Reservoir, Lake of the Ozarks, and Table Rock Lake. The hydrology of the state is influenced by the geology and topography, with significant limestone and karst features. The Ozark plateau in southern Missouri is characterized by numerous streams and springs. Snowpack data is not as relevant for Missouri's hydrology as precipitation and river flow data. Water management and flood control are major concerns in the state due to the frequent occurrence of flooding on major rivers.