Toney Reservoir Dam Reservoir Report
Last Updated: December 13, 2025
Toney Reservoir Dam, located in Washoe, Nevada, is a Federal-owned structure primarily used for irrigation purposes.
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Summary
Completed in 1970, this Earth-type dam stands at a height of 15 feet and has a hydraulic height of 11.5 feet. With a storage capacity of 85 acre-feet, the dam serves the local community for fire protection, stock watering, and small fish pond purposes.
Despite its low hazard potential, the dam's condition assessment indicates poor maintenance, with a risk assessment categorizing it as moderate. The last inspection in October 2021 flagged concerns about the structure's safety and prompted a hydraulic modification in 1996. The spillway, designed as uncontrolled, has a width of 13 feet to manage maximum discharge of 370 cubic feet per second.
As water resource and climate enthusiasts, understanding the importance of maintaining and managing Toney Reservoir Dam is crucial for ensuring water security in the region. The dam's association with the UNNAMED WASH river stream underscores its significance in regulating water flow for irrigation and other essential purposes. With ongoing inspections and regulatory oversight by Nevada DWR, the dam's operational efficiency and safety measures are essential for sustainable water resource management in Washoe County.
Years Modified |
1996 - Hydraulic |
Year Completed |
1970 |
Dam Length |
350 |
Dam Height |
15 |
River Or Stream |
UNNAMED WASH |
Primary Dam Type |
Earth |
Surface Area |
6.5 |
Hydraulic Height |
11.5 |
Drainage Area |
3.5 |
Nid Storage |
85 |
Structural Height |
15 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
15 |
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.
Toney Reservoir Dam