Oak Street dam
Oak Street
Oak Street Dam, located in Corona, California, is a key structure managed by local government for flood risk reduction along Oak Street Creek. Completed in 1979, this earth dam stands at a height of 36 feet and has a storage capacity of 138 acre-feet. With a drainage area of 6.02 square miles, the dam plays a crucial role in protecting the surrounding area from potential inundation and managing water flow during heavy rainfall events.
Managed by the California Department of Water Resources and regulated by the Safety of Dams agency, Oak Street Dam has a high hazard potential but is currently assessed to be in satisfactory condition. The dam's last inspection in January 2020 showed that it meets safety standards, with an inspection frequency of once per year. Despite its age, Oak Street Dam continues to fulfill its primary purpose of flood risk reduction effectively, highlighting the importance of consistent monitoring and maintenance to ensure its long-term resilience 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.
Nearby streamflow gauges
USGS streamgauges around Oak Street -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Temescal C Ab Main St A Corona Ca | 2 cfs | → |
| Santa Ana R Bl Prado Dam Ca | 114 cfs | → |
| Cucamonga C Nr Mira Loma Ca | 19 cfs | → |
| Temescal C A Corona Lk Nr Corona Ca | · | → |
| Chino C A Schaefer Avenue Nr Chino Ca | 1 cfs | → |
| Agua Chinon Wash Nr Irvine Ca | · | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Oak Street.
Boat launches
Campgrounds
- Prado Regional Park
- Oso Lake Scout Camp
- Oneill Regional Park
- Chino Hills - State Park
- Rancho Jurupa Park
- Blue Jay
Fishing spots
- Prado Regional Park, El Lake
- Irvine Lake (Santiago Res)
- Corona Lake
- Santa Ana River Lakes
- Anaheim Lake
- Cucamonga-Guasti Regional Park Lake
Paddle runs
- San Mateo Wilderness Boundary To Nf Boundary With Camp Pendleton
- Middle Fork - Commanche Campsite To Middle Fork Trailhead
- Devil Canyon Tributary To San Mateo Creek
- Laurel Gulch To Confluence With Mineo Canyon (Se 1/4, Sw 1/4, Sec 17, T2n, R8w)
- North Fork - Confluence Of Soldier And Coldbrook Creeks (Se1/4,Sw1/4, Sec) 5, T2n,,R9w To Conflluence With West Fork Of San Gabriel (Sw 1/4,Sw1/4, Sec 17, T2n, R8w)
- Gaging Station Below Spillway Of Cogswell Dam (Ne 1/4, Se 1/4, Sec 19, T2n, R10w) To Confluence With Nf San Gabriel River (Sw 1/4.Sw 1/4, Sec 15, T2n, R9w)
Track Oak Street 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 Oak Street
Where does the data for Oak Street 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 Oak Street.