Hidden Valley Lake Dam is an earth dam located in Brown County, Indiana, built in 1959. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 34 ft34 ft tall and 400 ft long, taller than 78% of U.S. dams with a recorded height. 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 Hidden Valley Lake Dam
The primary purpose of Hidden Valley Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by William Irvine (private). It impounds the Unnamed Tributary East Fork Salt Creek.
The dam stands 34 feet tall and stretches 400 feet across, creates a reservoir covering 20 acres, has a maximum storage capacity of 465 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1959, 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. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 04/30/2018.
At 34 feet, this dam is taller than 78% of dams nationwide.
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Location
| State | Indiana |
| County | Brown |
| River/Stream | Unnamed Tributary East Fork Salt Creek |
| Coordinates | 39.26438, -86.11522 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 34 ft |
| Dam Height | 34 ft |
| Dam Length | 400 ft |
| Year Completed | 1959 (67 years old) |
Storage & Hydraulics
| NID Storage | 465 acre-ft |
| Max Storage | 465 acre-ft |
| Normal Storage | 367 acre-ft |
| Surface Area | 20 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 714 cfs |
| Spillway Type | None |
Ownership & Safety
| Purpose | Recreation |
| Owner | William Irvine |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 04/30/2018 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IN00039 |
| Federal ID | IN00039 |
| More Info | State Dam Safety Program |