Trail is a dam located in Elmore County, Idaho, built in 1960. It carries a Significant hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 30 ft30 ft tall and 5,085 ft long, taller than 68% 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 Trail
The primary purpose of Trail is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is private-owned. It impounds the Little Canyon Creek Snake River.
The dam stands 30 feet tall and stretches 5,085 feet across, creates a reservoir covering 190 acres, has a storage capacity of 2,532 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1960, 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 12/14/2018.
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Location
| State | Idaho |
| County | Elmore |
| River/Stream | Little Canyon Creek Snake River |
| Coordinates | 43.05460, -115.32040 |
Physical Characteristics
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 5,085 ft |
| Year Completed | 1960 (66 years old) |
Storage & Hydraulics
| NID Storage | 2,532 acre-ft |
| Normal Storage | 2,532 acre-ft |
| Surface Area | 190 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 29 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Irrigation |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 12/14/2018 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | ID00239 |
| Federal ID | ID00239 |
| More Info | State Dam Safety Program |