Idlewild Lake Dam
Idlewild Lake Dam is an earth dam located in Dubois County, Indiana, built in 1940. It carries a Significant hazard potential classification and has a fair condition assessment.
About Idlewild Lake Dam
The primary purpose of Idlewild Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Idlewild Lake Incorporated (private). It impounds the Patoka River near Jasper.
The dam stands 22 feet tall and stretches 520 feet across, creates a reservoir covering 12 acres, has a maximum storage capacity of 113 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1940, the structure is well-established, with more than 75 years of service.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 01/29/2019.
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Location
| State | Indiana |
| County | Dubois |
| Nearest City | Jasper |
| River/Stream | Patoka River |
| Coordinates | 38.39970, -86.87769 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 520 ft |
| Year Completed | 1940 (86 years old) |
Storage & Hydraulics
| NID Storage | 113 acre-ft |
| Max Storage | 113 acre-ft |
| Normal Storage | 80 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 469 cfs |
| Spillway Type | None |
Ownership & Safety
| Purpose | Recreation |
| Owner | IDLEWILD LAKE INCORPORATED |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 01/29/2019 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IN00135 |
| Federal ID | IN00135 |
| More Info | State Dam Safety Program |