Riley Lake Dam is a dam located in Vigo County, Indiana, built in 1964. It carries a Significant hazard potential classification.
Dam profile
NID height · 13 ft13 ft tall and 480 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Riley Lake Dam
The primary purpose of Riley Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is private-owned.
The dam stands 13 feet tall and stretches 480 feet across, creates a reservoir covering 1 acres, has a maximum storage capacity of 65 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1964, the structure is well into its service life at over 50 years old.
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. The most recent inspection on record was 08/19/1964. That was over 62 years ago.
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Location
| State | Indiana |
| County | Vigo |
| Coordinates | 39.38693, -87.29809 |
Physical Characteristics
| NID Height | 13 ft |
| Dam Height | 13 ft |
| Dam Length | 480 ft |
| Year Completed | 1964 (62 years old) |
Storage & Hydraulics
| NID Storage | 65 acre-ft |
| Max Storage | 65 acre-ft |
| Normal Storage | 34 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 08/19/1964 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IN00724 |
| Federal ID | IN00724 |
| More Info | State Dam Safety Program |