Lamoille Road Detention Dam
Lamoille Road Detention Dam is an earth dam located in Elko County, Nevada. It carries a High hazard potential classification and has a poor condition assessment.
About Lamoille Road Detention Dam
The primary purpose of Lamoille Road Detention Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Elko County Public Works (local government). It impounds the Humboldt River-tr near Elko.
The dam stands 37 feet tall and stretches 405 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 28 acre-feet, and collects water from a drainage area of 1 square miles.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. An emergency action plan is in place for this dam. The most recent inspection on record was 07/26/2023.
At 37 feet, this dam is taller than 84% of dams nationwide.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Nevada dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Nevada |
| County | Elko |
| Nearest City | Elko |
| River/Stream | Humboldt River-tr |
| Coordinates | 40.80930, -115.72610 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 37 ft |
| Dam Height | 33 ft |
| Dam Length | 405 ft |
Storage & Hydraulics
| NID Storage | 28 acre-ft |
| Max Storage | 28 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 932 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | ELKO COUNTY PUBLIC WORKS |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Poor |
| Last Inspection | 07/26/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NV10440 |
| Federal ID | NV10440 |
| More Info | State Dam Safety Program |