Lake Hart is an unincorporated community and former town in Monroe Township, Morgan County, Indiana, United States. As of the 1990 census, the town had a total population of 213. Incorporated in the 1970s with a population of 231, the town was unincorporated community on September 23, 1998. Residents are now part of the unincorporated community of Morgan County. On September 13, 1985 the former town was declared a legal Conservancy District per the Indiana Conservancy District Act in Morgan County Circuit Court under Cause # C84 C 443. The name of the Community and of the Conservancy District has since been Hart Lake. Lake Hart is the name of the former town, which was disbanded. The purpose for the Hart Lake Conservancy District was amended in Morgan County Circuit Court on January 16, 1987 to include the legal purposes of procuring water and sewage service for the community. While not an incorporated town, a Conservancy District is a legal governmental entity with a duly elected board of directors; has a tax base; is subject to the Indiana Governmental Agencies laws regarding budgeting and is subject to audit by the State Board of Accounts.