Allerman #1 Dam dam
Allerman #1 Dam
Allerman #1 Dam, located in Minden, Nevada, serves primarily for irrigation purposes along the Carson River. This earth dam, with a height of 20 feet and a length of 2800 feet, has a storage capacity of 500 acre-feet and a surface area of 10 acres. It is regulated and inspected by the Nevada Division of Water Resources, ensuring its safety and compliance with state standards.
The dam features a controlled spillway and outlet gates for water release, with the last inspection in September 2021 rating its condition as fair with a high hazard potential. Despite its age, with modifications in 1997, it continues to play a crucial role in water management and supply in the region. With a very high risk assessment, stakeholders must prioritize maintenance and risk management measures to ensure the safety and efficacy of Allerman #1 Dam for the surrounding communities and ecosystems.
For water resource and climate enthusiasts, Allerman #1 Dam presents an intriguing case study of a privately owned structure that plays a vital role in water allocation and management in Nevada. Its history, design, and current condition offer valuable insights into the challenges and opportunities associated with maintaining aging infrastructure in the face of evolving climate conditions and increasing water demands. As discussions around sustainable water practices and infrastructure resilience continue to gain importance, the story of Allerman #1 Dam serves as a reminder of the intricate relationship between human development and natural resources.
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.
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 Allerman #1 Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| East Fork Carson River Near Gardnerville | 911 cfs | → |
| Daggett Creek Near Genoa | 2 cfs | → |
| Carson River Near Carson City | 748 cfs | → |
| Bryant C Nr Gardnerville | 7 cfs | → |
| Eagle Rock Ck Nr Stateline | 1 cfs | → |
| Clear Creek Near Carson City | 3 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Allerman #1 Dam.
Boat launches
- Cave Rock Boat Launch Douglas County
- Indian Creek Camp Ground Day Use Area
- Summit Lake Trail Alpine County
- Golf Course Outer Trail Carson City
- Topaz Park Road Douglas County
- Washoe County
Campgrounds
- Nevada Beach Campground
- Nevada Beach Campground And Day Use Pavilion
- Nevada Beach
- Rv Park And Campground
- Zephyr Cove Resort
- El Dorado
Fishing spots
Paddle runs
- Centerville Flat To Hangman's Bridge
- Headwaters In Sec 7, T11n, R18e To Blair Bridge
- Headwaters To South Of Upper Truckee Road (Sec Line Between 17/20 Intercepts River And Unnamed Tributary)
- Source Sec 24, T6n, R21e To Centerville Flat
- 1/4 Mile North Of State Highway 50 To Avalanche Lake
- State Highway 50 To 1/4 Mile North Of State Highway 50
Track Allerman #1 Dam in the Snoflo app
Save this dam as a favorite and get the local NOAA / yr.no forecast plus regional flow context wherever you are.
About Allerman #1 Dam
Where does the data for Allerman #1 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 High 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 above 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.
Other water bodies near here
Snoflo-tracked reservoirs and dams within driving distance of Allerman #1 Dam.