Valmy Dam Evaporation Pond A Reservoir Report
Last Updated: December 15, 2025
Valmy Dam Evaporation Pond A, located in Humboldt, Nevada, serves as a crucial water resource management infrastructure designed by Applied Soil Water Technologies LLC.
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Summary
The dam, completed in 1979, stands at a height of 21 feet with a hydraulic height of 19 feet, providing a storage capacity of 301 acre-feet for evaporation control. With a surface area of 26.7 acres and a drainage area of 0.1 acres, the dam plays a pivotal role in managing water resources in the region.
Despite its low hazard potential and fair condition assessment, Valmy Dam Evaporation Pond A poses a high risk due to its location near the Humboldt River-Os. The dam lacks a spillway and has one controlled outlet gate, emphasizing the need for careful monitoring and management. The last inspection in June 2019 highlighted the importance of regular evaluations to ensure the structural integrity and safety of the dam to mitigate potential risks associated with its operation.
With state regulation, inspection, and enforcement in place by the Nevada Department of Water Resources, Valmy Dam Evaporation Pond A stands as a testament to efficient water resource management. Its strategic location and design underscore the significance of such infrastructure in maintaining water quality and availability, making it a focal point for water resource and climate enthusiasts alike.
Years Modified |
2012 - Structural |
Year Completed |
1979 |
Dam Length |
2705 |
Dam Height |
21 |
River Or Stream |
HUMBOLDT RIVER-OS |
Primary Dam Type |
Earth |
Surface Area |
26.7 |
Hydraulic Height |
19 |
Drainage Area |
0.1 |
Nid Storage |
301 |
Structural Height |
21 |
Outlet Gates |
Other Controlled - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
21 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Valmy Dam Evaporation Pond A