Jurupa Basin dam
Jurupa Basin
Jurupa Basin, located in Fontana, California, serves as a critical flood risk reduction infrastructure along the San Sevaine Creek. This earth dam, completed in 2001, stands at 29 feet high with a storage capacity of 1680 acre-feet. With a surface area of 56 acres and a length of 7000 feet, Jurupa Basin plays a vital role in safeguarding the surrounding area from potential flooding events.
Managed by local government authorities, Jurupa Basin is under state regulation, permitting, inspection, and enforcement to ensure its structural integrity and safety. The dam's hazard potential is classified as high, but its condition assessment in 2017 deemed it satisfactory. In case of emergencies, Jurupa Basin is prepared with an Emergency Action Plan, last revised in 2018, to guide response efforts and protect the community.
For water resource and climate enthusiasts, Jurupa Basin exemplifies the fusion of engineering ingenuity and environmental stewardship in mitigating flood risks and ensuring water supply reliability. As a key component of flood risk reduction infrastructure in San Bernardino County, Jurupa Basin stands as a testament to the importance of sustainable water management practices in enhancing community resilience against natural disasters.
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 Jurupa Basin -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Cucamonga C Nr Mira Loma Ca | 8 cfs | → |
| Fontana Water Co Spill Ch From Afterbay Nr Fontana | 3 cfs | → |
| Fontana Uwc Surface Div Weir 2 Nr Fontana Ca | 16 cfs | → |
| Fontana Uwc Surface Div Nr Fontana Ca | 18 cfs | → |
| Fontana Ph Forebay Spillway Nr Fontana Ca | · | → |
| Temescal C Ab Main St A Corona Ca | 3 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Jurupa Basin.
Boat launches
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Campgrounds
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Fishing spots
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River runs
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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 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.