Lake Decatur
A large reservoir created in the 1920s by damming the Sangamon River, curving along the south and east sides of the city. It is us...A large reservoir created in the 1920s by damming the Sangamon River, curving along the south and east sides of the city. It is used for boating, fishing and lakeside walks, with parks and marinas along the shore. Sunset views from the bridges and Nelson Park are especially pretty.














