Lake Monroe is Indiana's largest reservoir, created in the 1960s by damming Salt Creek south of Bloomington. The resulting lake stretches about 10 miles long with 150 miles of shoreline, surrounded by second-growth forest and Hoosier National Forest land. It is the primary outdoor recreation destination for Bloomington residents and serves as the city's water supply.
The lake has two developed beach areas with swimming in summer, multiple boat ramps, and a marina at the western end. Houseboats and pontoon boats can be rented. Kayaking and paddleboarding are popular on the quieter eastern arms of the lake. The surrounding forest has hiking and mountain biking trails, including several that connect to the longer Indiana State Forest system.
Crappie, bass, and catfish fishing are the main draws for anglers. The autumn foliage around the lake's edges is among the best viewing in Indiana.