Round Mountain dam
Round Mountain
Round Mountain is a privately owned dam located in Mendocino County, California, near the city of Ukiah. Built in 1964, this earth dam stands at a height of 43 feet and serves multiple purposes, including flood risk reduction, irrigation, recreation, and water supply. With a storage capacity of 282 acre-feet and covering a surface area of 17 acres, Round Mountain plays a crucial role in managing water resources in the region.
Managed by the California Department of Water Resources (DWR) under the Safety of Dams program, Round Mountain is subject to regular inspections and enforcement to ensure its structural integrity and safety. The dam's hazard potential is classified as high, but its condition assessment has been rated as satisfactory as of September 2017. The dam is designed to mitigate flood risks along the Tr York Creek and protect surrounding areas from potential inundation, highlighting its importance in water resource management and climate resilience efforts.
Despite its age, Round Mountain continues to play a vital role in the local water infrastructure, demonstrating the significance of proper maintenance and regulation of dams for flood control and water supply purposes. With its strategic location and key functions, Round Mountain serves as a crucial asset in safeguarding the community against potential water-related hazards and ensuring sustainable water management practices in the region.
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 Round Mountain -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Russian R Nr Ukiah Ca | 0 cfs | → |
| Ef Russian R Nr Ukiah Ca | 156 cfs | → |
| Ef Russian R Nr Calpella Ca | 41 cfs | → |
| Russian R Nr Talmage Ca | 92 cfs | → |
| Russian R Nr Hopland Ca | 100 cfs | → |
| Outlet C Nr Willits Ca | 4 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Round Mountain.
Boat launches
Campgrounds
- Miti Campground
- Deer Camp Group Campground
- Mayacmas Campground
- Cow Mountain Rec Area Dispersed
- Goat Rock Primitive Campground
- Red Mountain Campground
Fishing spots
- Lake Mendocino
- Cameron's Fishing Hole Catch & Release
- Lake Pillsbury
- Clear Lake (Lake Cty)
- Lake Sonoma
- Buckeye Creek
Paddle runs
Track Round Mountain 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 Round Mountain
Where does the data for Round Mountain 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 Round Mountain.