Map of All 1,089 Indiana Dams
Indiana has 1,089 dams in the National Inventory of Dams — and 281 are classified as high hazard (26% of the state’s total), meaning failure would likely cause loss of life. 91 Indiana dams are both high-hazard and in poor or unsatisfactory condition.
Use the interactive Indiana dams map below to explore every dam in the state, color-coded by hazard level. Click any dam for its condition assessment, last inspection date, and Emergency Action Plan status. Or view the full US Dams interactive map to compare Indiana to every other state.
Hazard
Condition
Purpose
Indiana Dams by the Numbers
- 1,089 total dams in Indiana
- 281 high hazard — failure would likely cause loss of life
- 319 significant hazard
- 453 low hazard
- 517 in poor or unsatisfactory condition (498 poor, 19 unsatisfactory)
- 91 Indiana dams are both high-hazard AND in poor/unsatisfactory condition
Data source: US Army Corps of Engineers, National Inventory of Dams (NID).
The Tallest Dams in Indiana
The tallest dam in Indiana is Brookville Dam at 181 feet, completed in 1974. The 10 tallest Indiana dams from the National Inventory of Dams:
| Dam | Height | Year | Primary Purpose | Condition | County |
|---|---|---|---|---|---|
| Brookville Dam | 181 ft | 1974 | Flood Risk Reduction | Not Available | Franklin |
| Cagles Mill Dam | 150 ft | 1953 | Flood Risk Reduction | Not Available | Putnam |
| Patoka Lake Dam | 145 ft | 1978 | Flood Risk Reduction | Not Available | Dubois |
| Sweetwater Lake Dam | 140 ft | 1965 | Recreation | Fair | Brown |
| Mississinewa Dam | 140 ft | 1967 | Flood Risk Reduction | Not Available | Miami |
| Hidden Valley Lake Dam | 135 ft | 1973 | Recreation | Satisfactory | Dearborn |
| Salamonie Dam | 133 ft | 1966 | Flood Risk Reduction | Not Available | Wabash |
| Cordry Lake Dam | 120 ft | 1969 | – | Fair | Brown |
| Cecil M. Harden Dam | 119 ft | 1960 | Flood Risk Reduction | Not Available | Parke |
| J. Edward Roush Dam | 104 ft | 1968 | Flood Risk Reduction | Not Available | Huntington |
High-Hazard Indiana Dams in Poor Condition
The most concerning dams are those classified as high-hazard that also carry a Poor or Unsatisfactory condition rating — 91 dams in Indiana. Notable examples:
- Eagle Creek Reservoir Dam (92 ft, Marion County) — Flood Risk Reduction, Poor condition
- Twin-Rush Creek Dam No. 3 (74 ft, Washington County) — Flood Risk Reduction, Poor condition
- Versailles Lake Dam (65 ft, Ripley County) — Water Supply, Poor condition
- Hood Lake Dam (63 ft, Johnson County) — Recreation, Poor condition
- Delaney Creek Dam No. 1 (59 ft, Washington County) — Flood Risk Reduction, Poor condition
Filter the interactive US Dams map by hazard and condition to see all of them on one view.
Dam Safety in Indiana
Dam safety in Indiana is overseen by the state dam safety program, in coordination with federal regulators: the US Army Corps of Engineers, the Bureau of Reclamation (for federal water projects), the Tennessee Valley Authority where applicable, and the Federal Energy Regulatory Commission (FERC) for licensed hydropower dams. Emergency Action Plans are typically required for high-hazard dams under state regulations.
Frequently Asked Questions
How many dams are in Indiana?
Indiana has 1,089 dams in the National Inventory of Dams tracked by the US Army Corps of Engineers: 281 high hazard, 319 significant hazard, and 453 low hazard.
What is the tallest dam in Indiana?
The tallest dam in Indiana is Brookville Dam at 181 feet, completed in 1974. It is primarily a flood risk reduction structure.
How many Indiana dams are in poor condition?
517 Indiana dams are currently rated as being in Poor or Unsatisfactory condition. Of those, 91 are also classified as high-hazard — meaning failure would likely cause loss of life.
