Little Valley is a dam located in Bonneville County, Idaho, built in 1897. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 23 ft23 ft tall and 270 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 Little Valley
Little Valley is a dam in Bonneville, Idaho. The dam is private-owned. It impounds the Little Valley Creek Grays Lake.
The dam stands 23 feet tall and stretches 270 feet across, creates a reservoir covering 173 acres, has a storage capacity of 1,322 acre-feet, and collects water from a drainage area of 5 square miles. Completed in 1897, the structure is over a century old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected 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 06/12/2018.
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Location
| State | Idaho |
| County | Bonneville |
| River/Stream | Little Valley Creek Grays Lake |
| Coordinates | 43.09270, -111.52070 |
Physical Characteristics
| NID Height | 23 ft |
| Dam Height | 23 ft |
| Dam Length | 270 ft |
| Year Completed | 1897 (129 years old) |
Storage & Hydraulics
| NID Storage | 1,322 acre-ft |
| Normal Storage | 1,322 acre-ft |
| Surface Area | 173 acres |
| Drainage Area | 5 sq mi |
| Max Discharge | 1 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Other |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 06/12/2018 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | ID00013 |
| Federal ID | ID00013 |
| More Info | State Dam Safety Program |