Prado Dam - Treatment Dike Dam
Prado Dam - Treatment Dike
Prado Dam - Treatment Dike, also known as Prado Reservoir, is a federal-owned structure in Orange, California, managed by the US Army Corps of Engineers. Completed in 1941, this earth dam on the Santa Ana River serves primarily for flood risk reduction but also supports recreation and water supply purposes. With a structural height of 53 feet and a length of 2280 feet, Prado Dam has a storage capacity of 295,581 acre-feet and a maximum discharge of 181,000 cubic feet per second.
As a high-hazard potential dam, Prado Dam is continuously monitored and managed by the USACE to address flood risks associated with the structure. The agency implements risk management measures, including regular inspections, maintenance, and emergency action planning to ensure the safety and integrity of the dam. In case of severe weather events or increased water levels, the dam may release water to manage downstream flow or relieve pressure, emphasizing the importance of public awareness and preparedness for potential dam-related emergencies.
Overall, Prado Dam plays a crucial role in protecting the surrounding communities from flooding while also supporting various water-related activities. By implementing proactive risk management strategies and engaging with local stakeholders, the US Army Corps of Engineers ensures the continued functionality and safety of this essential water resource infrastructure.
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 Prado Dam - Treatment Dike -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Santa Ana R Bl Prado Dam Ca | 91 cfs | → |
| Temescal C Ab Main St A Corona Ca | 1 cfs | → |
| Cucamonga C Nr Mira Loma Ca | 21 cfs | → |
| Chino C A Schaefer Avenue Nr Chino Ca | 1 cfs | → |
| San Antonio C A Riverside Dr Nr Chino Ca | 2 cfs | → |
| Carbon C Bl Carbon Cyn Dam Ca | · | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Prado Dam - Treatment Dike.
Boat launches
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Campgrounds
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Fishing spots
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River runs
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About Prado Dam - Treatment Dike
Where does the data for Prado Dam - Treatment Dike 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.