Yerington Bb Dam Reservoir Report
Nearby: Yerington Mill Dam Yerington No 2 Dam
Last Updated: December 13, 2025
Yerington Bb Dam, located in Lyon County, Nevada, serves as a crucial structure for tailings management along the Walker River.
°F
°F
mph
Wind
%
Humidity
Summary
Owned privately, the dam stands at a height of 10 feet with a length of 100 feet, providing a storage capacity of 50 acre-feet. The dam, primarily constructed with earth and stone materials, has a low hazard potential but an unsatisfactory condition assessment, indicating a need for maintenance and improvement.
Despite the dam's low hazard potential, its risk assessment is rated as high due to various factors. The dam lacks a spillway and has limited discharge capacity, which could pose a threat in the event of excess water accumulation. The dam is state-regulated and regularly inspected by the Nevada Division of Water Resources to ensure compliance with safety standards. Emergency action plans and risk management measures may need to be enhanced to address potential safety concerns.
Yerington Bb Dam, situated in the San Francisco District and Congressional District 04 of Nevada, plays a vital role in managing tailings and controlling water flow along the Walker River. With its unique design and purpose, the dam serves as a key infrastructure in the region's water resource management. Ongoing inspections and risk assessments are essential to address any safety issues and ensure the dam's reliability in safeguarding the surrounding areas from potential flooding or water-related emergencies.
Dam Length |
100 |
Dam Height |
10 |
River Or Stream |
WALKER RIVER-OS |
Primary Dam Type |
Earth |
Surface Area |
10 |
Drainage Area |
0.1 |
Nid Storage |
50 |
Outlet Gates |
Other Controlled - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
10 |
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.
Yerington Bb Dam