Jurupa Basin dam
Jurupa Basin
Jurupa Basin in Riverside, California, is a local government-owned earth dam that plays a crucial role in flood risk reduction along the Jurupa Wash. Completed in 1983, this 22-foot high structure has a storage capacity of 167 acre-feet and covers a surface area of 17 acres. With a high hazard potential, the dam's condition was last assessed as satisfactory in September 2017, and it is inspected annually to ensure its safety and functionality.
Managed by the Department of Water Resources (DWR) and regulated by the Safety of Dams agency, Jurupa Basin is equipped with state-of-the-art enforcement, inspection, and permitting mechanisms. The dam's primary purpose is flood risk reduction, reflecting its essential role in protecting the surrounding Ennis community from potential inundation. Located in the Los Angeles District, the dam stands as a testament to California's commitment to water resource management and climate resilience.
With Mark Takano as the congressional representative for the area, Jurupa Basin stands as a vital infrastructure asset in Riverside County. Its strategic location, design, and operational efficiency make it a key component in safeguarding the local environment and population from the impacts of extreme weather events. As water resource and climate enthusiasts, understanding and appreciating the significance of Jurupa Basin highlights the interconnectedness of water management, infrastructure development, and community safety in the face of changing climate patterns.
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.
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Jurupa Basin.
Boat launches
- Pacific Crest Trail, Hesperia
- Eucalyptus Park Road, San Dimas
- Vacation Drive 28736, Canyon Lake
- Goetz Road Riverside County
Campgrounds
- Rancho Jurupa Park
- Prado Regional Park
- March Arb Military
- Glen Helen Regional Park
- Bonita Ranch Campground
- Applewhite Campground
Fishing spots
- Lake Evans
- Cucamonga-Guasti Regional Park Lake
- Secombe Lake
- Prado Regional Park, El Lake
- Glen Helen Lakes
- Corona Lake
Paddle runs
- Middle Fork - Commanche Campsite To Middle Fork Trailhead
- Below Deep Creek Lake To Below 2w01 Crossing
- Laurel Gulch To Confluence With Mineo Canyon (Se 1/4, Sw 1/4, Sec 17, T2n, R8w)
- Below 2w01 Crossing To Mojave Reservoir
- San Mateo Wilderness Boundary To Nf Boundary With Camp Pendleton
- Filaree Flat To Confluence With Bear Creek
More reservoirs
Track Jurupa Basin 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 Jurupa Basin
Where does the data for Jurupa Basin 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 Jurupa Basin.