Indiana HB1222 exempts retention ponds from dam regulations, effective July 1, 2026.
Indiana HB1222 amends the Indiana Code to exempt retention ponds from dam regulations. A retention pond is defined as a manmade basin designed to collect and store surface water in an impervious membrane liner, not connected to a natural river, stream, or lake. The bill also exempts certain small dams from regulation if they are built for erosion control, watering livestock, recreation, or providing a haven or refuge for fish or wildlife, and meet specific size and height criteria. The changes take effect on July 1, 2026.
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