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SB 477

Low head dams.

2025 Regular Session Introduced by David Abbott and 5 co-sponsors

Indiana authorizes removal or regulation of low-head dams to improve boater safety and restore river ecosystems, effective April 2025.

Signed by the Governor
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Bill Summary · SB 477

Legislative bill overview

SB 477 establishes regulatory framework and removal procedures for low-head dams in Indiana. The law became effective April 1, 2025, and addresses the management, safety, and potential removal of these structures that create hazardous boating conditions and ecological barriers.

Why is this important

Low-head dams pose significant public safety risks, particularly for boaters and swimmers who can become trapped in recirculating currents. Additionally, these structures fragment river ecosystems, impeding fish migration and affecting water quality—making their management relevant to both recreation safety and environmental restoration efforts.

Potential points of contention

  • Landowner rights vs. public safety: Property owners with dams may face removal mandates or operational restrictions without compensation
  • Cost allocation: Unclear whether removal expenses fall on private dam owners, municipalities, or the state budget
  • Economic impacts on water-dependent industries: Mills and irrigation operations relying on low-head dams could face operational changes or closure requirements

Compiled from official sources — confirm details with the bill’s official record.

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