Prenda dam
Prenda
Prenda, located in Riverside, California, is a vital structure managed by the local government for flood risk reduction along Prenda Creek. Built in 1954, this earth dam stands at 44 feet tall and spans 1,313 feet in length, with a storage capacity of 192 acre-feet. Despite its age, Prenda has a satisfactory condition assessment as of September 2017 and is subject to regular state inspection, permitting, and enforcement to ensure its reliability in safeguarding the surrounding community.
With a high hazard potential, Prenda plays a crucial role in mitigating flood risks in the region and is regulated by the California Department of Water Resources under the Safety of Dams program. The dam's location within the Los Angeles District emphasizes its importance in protecting the area from potential inundation events. In case of emergencies, the dam's emergency action plan is regularly updated and meets state guidelines, ensuring swift and effective responses to any unforeseen events.
For water resource and climate enthusiasts, Prenda serves as a prime example of efficient flood risk reduction infrastructure managed by local government authorities in collaboration with state regulatory agencies. Its strategic placement and operational effectiveness underscore the critical role such structures play in safeguarding communities against the impacts of extreme weather events, making it a noteworthy site for those interested in water resource management and climate resilience efforts in California.
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 Prenda -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Temescal C Ab Main St A Corona Ca | 0 cfs | → |
| Santa Ana R A E St Nr San Bernardino Ca | 2 cfs | → |
| San Timoteo C Nr Loma Linda Ca | 3 cfs | → |
| Temescal C A Corona Lk Nr Corona Ca | · | → |
| Lytle C A Colton Ca | · | → |
| Warm C Nr San Bernardino Ca | · | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Prenda.
Boat launches
- Vacation Drive 28736, Canyon Lake
- Goetz Road Riverside County
- Pacific Crest Trail, Hesperia
- Eucalyptus Park Road, San Dimas
- Warren Road 37701, Temecula
Campgrounds
- Rancho Jurupa Park
- March Arb Military
- Lake Perris State Rec Area
- Prado Regional Park
- Lake Elsinore
- El Cariso Campground
Fishing spots
- Lake Evans
- Perris Lake
- Corona Lake
- Secombe Lake
- Cucamonga-Guasti Regional Park Lake
- Prado Regional Park, El Lake
Paddle runs
- San Mateo Wilderness Boundary To Nf Boundary With Camp Pendleton
- Middle Fork - Commanche Campsite To Middle Fork Trailhead
- Below Deep Creek Lake To Below 2w01 Crossing
- Filaree Flat To Confluence With Bear Creek
- Big Bear Dam To Private Land In Sec 19, T1n, R1w
- Big Meadows To Filaree Flat
Track Prenda 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 Prenda
Where does the data for Prenda 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 Prenda.