Yerington Mill Dam dam
Yerington Mill Dam
Yerington Mill Dam, located in Lyon County, Nevada, is a privately owned earth dam primarily used for tailings storage. Standing at a height of 90 feet and with a length of 100 feet, the dam has a storage capacity of 1,166 acre-feet and a surface area of 100 acres. The dam, regulated by the Nevada Division of Water Resources, is considered to have a significant hazard potential and a high risk assessment rating.
The dam does not have a spillway and features one controlled outlet gate. Despite not having a condition assessment rating, the dam is subject to regular inspections, with the last one conducted in November 2021. With a risk management plan in place and a designated emergency action plan, the Yerington Mill Dam is equipped to respond to any potential threats and ensure the safety of surrounding areas in case of emergencies.
Enthusiasts interested in water resources and climate will find Yerington Mill Dam to be an intriguing case study due to its unique design and purpose. The dam's location along the Walker River-OS and its significant hazard potential make it a focal point for ongoing monitoring and risk management efforts. As a privately owned structure, the dam plays a critical role in local water management and underscores the importance of effective regulatory oversight and emergency preparedness in safeguarding water resources and surrounding communities.
Plan around the weather
Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column on the meteogram -- rain on the basin upstream typically lifts inflow 24-72 hours later.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & precipitation
Daily temperatures, snow, and rain projected over the next two weeks.
Nearby streamflow gauges
USGS streamgauges around Yerington Mill Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Walker R Nr Wabuska | 37 cfs | → |
| W Walker R Nr Hudson | 127 cfs | → |
| Walker River Ab Weber Res Nr Schurz | 35 cfs | → |
| E Walker R Ab Strosnider D Nr Mason | 120 cfs | → |
| Walker R Abv Little Dam Nr Schurz | 70 cfs | → |
| Canal No 2 Abv Little Dam Nr Schurz | 15 cfs | → |
About Yerington Mill Dam
Where does the data for Yerington Mill Dam come from?
Structural and regulatory data come from the U.S. Army Corps of Engineers' National Inventory of Dams (NID). Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.
How often is the report updated?
NID structural data refreshes annually as the Corps publishes updated assessments. The weather forecast refreshes throughout the day.
What does the Significant hazard rating mean?
The Corps of Engineers' hazard potential classification grades probable consequences if the dam fails: High = probable loss of human life; Significant = no probable loss of human life but possible economic loss / environmental damage; Low = no probable loss of human life, only minor economic / environmental losses. See the Dam Data Reference card below for the full definitions.
What's "% of normal"?
The current storage value compared to the historical average storage on this calendar day. 100% = right on average; values above 100% mean above-normal storage (wet year); values below mean below-normal (dry year or drought).
Can I get alerts when storage crosses a threshold?
Yes -- alerts are managed in the Snoflo iOS app. Favorite this dam, set a threshold, and you'll get a push the moment conditions cross.
Dam data reference
Condition Assessment
- Satisfactory
- No 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.
- 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.
- 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.
Hazard Potential Classification
- High
- Dams 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, environmental 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.