The Barren watershed, also known as HUC 05110002, covers approximately 2,070 square miles of land in Kentucky. The hydrology of the watershed is dominated by the Green River and its tributaries. The area receives an average of 50 inches of precipitation per year, with about 20% of it falling as snow. The specific snowpack in the watershed varies from year to year, but it generally melts in late winter and early spring, contributing to high water flow in the rivers. The surface water in the watershed is used for irrigation, recreation, and drinking water supply. The main reservoir in the area is the Green River Lake, which serves as a flood control and hydroelectric power generation facility. Interesting climatic facts include that the region experiences hot and humid summers, and winters can be cold and snowy. Climate change is expected to bring more extreme weather events to the area, including more severe storms and droughts.