Hidden Lake is a dam located in Valley County, Idaho, built in 1970. It carries a Significant hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 26 ft26 ft tall and 1,525 ft long, taller than 55% 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 Lake
The primary purpose of Hidden Lake is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is private-owned. It impounds the Padget Creek North Fork Little Squaw Creek near High Valley.
The dam stands 26 feet tall and stretches 1,525 feet across, creates a reservoir covering 28 acres, has a storage capacity of 375 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1970, 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 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 06/22/2018.
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Location
| State | Idaho |
| County | Valley |
| Nearest City | High Valley |
| River/Stream | Padget Creek North Fork Little Squaw Creek |
| Coordinates | 44.23040, -116.18460 |
Physical Characteristics
| NID Height | 26 ft |
| Dam Height | 26 ft |
| Dam Length | 1,525 ft |
| Year Completed | 1970 (56 years old) |
Storage & Hydraulics
| NID Storage | 375 acre-ft |
| Normal Storage | 375 acre-ft |
| Surface Area | 28 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 120 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 06/22/2018 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | ID00251 |
| Federal ID | ID00251 |
| More Info | State Dam Safety Program |