The Muscatatuck Watershed, located in southern Indiana, covers an area of approximately 1,255 square miles. The main river within the watershed is the Muscatatuck River, which is approximately 80 miles long. The hydrology of the watershed is influenced by the geology, which is dominated by limestone and shale bedrock. These geologic formations contribute to the region's karst topography, which results in the formation of sinkholes and underground caves. The Muscatatuck Watershed experiences a humid continental climate, with average temperatures ranging from 20°F to 85°F throughout the year. The watershed receives an average of 45 inches of precipitation annually, with the majority falling in the form of rain during the spring and summer months. Surface water quality in the watershed is impacted by agricultural practices, including nutrient and sediment runoff. The primary reservoir within the watershed is Hardy Lake, which is used for recreational activities and as a source of drinking water.