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Indiana: Flood Warning Systems and Interagency Approach to Mitigation Planning

In Orange County, Indiana, the Lost River flows through a karst environment, often under the surface. Flooding occurs without warning. The Indiana Silver Jackets team has implemented an interagency approach and found a way to create a flood warning system. By linking a number of newly placed U.S. Geological Survey (USGS) stream gages with a USACE Planning Assistance to States Hydrology and Hydraulics study of the underlying karst features below the communities, the community will receive automatic triggers when the water reaches levels corresponding to previously observed flooding.

With the help of US Department of Housing and Urban Development's Community Development Block Grant available for communities that were damaged during the Midwestern flood disasters of 2008, the community will provide $75,000 for their cost-share and will conduct Light Detection and Ranging (LiDAR) flyovers. The system will warn the community of impending floods thus saving thousands of dollars in damages. Through Silver Jackets, the state will be able to acquire LiDAR mapping for all 92 counties, leveraging interagency funds to map 12 counties and $13 million in CDBG funds to map 80 counties.