Loma Rica Airport dam
Loma Rica Airport
Loma Rica Airport, also known as Yuba Reservoir, is a public utility facility located in Grass Valley/Nevada City, California. This water resource infrastructure is primarily used for irrigation and water supply purposes, with a dam height of 41 feet and a hydraulic height of 36 feet. Completed in 1965, the reservoir has a storage capacity of 94 acre-feet and covers a surface area of 9 acres, serving the surrounding area with water from Tr L Green Horn Creek.
Managed by the California Department of Water Resources and regulated for safety by the Safety of Dams agency, Loma Rica Airport has a high hazard potential but has been assessed as satisfactory in condition. Regular inspections are conducted, with the last assessment completed in September 2017. Despite its age, the facility meets state permitting and enforcement requirements, ensuring that it continues to provide vital water resources to the community. In the event of an emergency, an Emergency Action Plan is in place, last revised in January 2019.
With its strategic location and critical role in water supply management, Loma Rica Airport remains a key asset for the region. The dam's design and construction as an earth structure have stood the test of time, demonstrating the resilience and reliability of this essential infrastructure. As climate change impacts water resources, facilities like Loma Rica Airport will play an increasingly important role in ensuring sustainable and secure water supplies for the future.
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 Loma Rica Airport -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Deer C Nr Smartville Ca | 59 cfs | → |
| Nf American R A North Fork Dam Ca | 773 cfs | → |
| N Yuba R Bl Goodyears Bar Ca | 663 cfs | → |
| Bear R Nr Wheatland Ca | 328 cfs | → |
| Pilot C Bl Mutton Canyon Nr Georgetown Ca | 2 cfs | → |
| Yuba R Nr Marysville Ca | 1,850 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Loma Rica Airport.
Boat launches
- Iowa Hill Road Placer County
- Yuba County
- Fuller Lake Boating Site
- Oxbow Raft Put-In Site
- Lake Spaulding Road 10260, Nevada City
- Smokey Lane 44-50, Alleghany
Campgrounds
- Nevada County Fairgrounds
- Rock Creek Mill Site
- South Yuba
- South Yuba Primitive Camp
- Mineral Bar - Auburn State Rec Area
- Bear River County Park
Fishing spots
Paddle runs
- Chamberlain Falls (Iowa Hill To Yankee Jim)
- Confluence With Jefferson Creek To Confluence With Kentucky Creek
- One-Half Mile West Of Confluence With Fall Creek To Confluence With Jefferson Creek
- Yankee Jim Road To Ponderosa Way (Shirttail)
- Langs Crossing Bridge To One-Half Mile West Of Confluence With Fall Creek (Boundary Of Nf And Private Land)
- Greenwood To Mammoth Bar
Track Loma Rica Airport 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 Loma Rica Airport
Where does the data for Loma Rica Airport 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 Loma Rica Airport.