Lamoille Road Detention Dam Reservoir Report
Last Updated: December 15, 2025
The Lamoille Road Detention Dam, located in Elko, Nevada, serves as a crucial flood risk reduction structure along the Humboldt River.
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Summary
Designed primarily for debris control and flood risk reduction, this earth dam stands at a height of 33 feet with a hydraulic height of 34 feet. With a storage capacity of 28.4 acre-feet and a maximum discharge of 932 cubic feet per second, the dam plays a vital role in mitigating the potential hazards posed by high-risk flooding events in the region.
Despite its important function, the Lamoille Road Detention Dam has been assessed as being in poor condition, with a high hazard potential. Regular inspections are conducted to monitor its structural integrity and ensure its effectiveness in flood control. The dam's uncontrolled spillway and single outlet gate highlight the need for ongoing maintenance and potential improvements to enhance its overall performance in managing floodwaters. As climate change continues to impact water resources and weather patterns, the maintenance and upkeep of critical infrastructure like the Lamoille Road Detention Dam are essential for protecting communities and ecosystems in the region.
Dam Length |
405 |
Dam Height |
33 |
River Or Stream |
HUMBOLDT RIVER-TR |
Primary Dam Type |
Earth |
Surface Area |
5 |
Hydraulic Height |
34 |
Drainage Area |
1.5 |
Nid Storage |
28.4 |
Structural Height |
37 |
Outlet Gates |
Uncontrolled - 1 |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
37 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
S F Humboldt R Ab Dixie C Nr Elko
|
16cfs |
Humboldt R Nr Elko
|
12cfs |
S Fk Humboldt R Abv Tenmile Ck Nr Elko
|
33cfs |
Lamoille C Nr Lamoille
|
6cfs |
Humboldt R Nr Carlin
|
32cfs |
Susie Creek At Carlin
|
1cfs |
Dam Data Reference
Condition Assessment
SatisfactoryNo existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
Lamoille Road Detention Dam