San Sevaine Basin #5 dam
San Sevaine Basin #5
San Sevaine Basin #5 is a local government-owned earth dam located in Fontana, California, designed for debris control along the San Sevaine Creek. Completed in 2004, this dam stands at a height of 49 feet and has a storage capacity of 2765 acre-feet. With a drainage area of 11.2 square miles, it serves to reduce flood risk in the region and has a spillway width, outlet gates, and locks for efficient water management.
The dam, with a surface area of 71 acres, has a high hazard potential but is in satisfactory condition according to a 2017 assessment. Inspected regularly, the dam meets state regulatory requirements for safety and undergoes enforcement and maintenance as needed. Located in San Bernardino County, the dam plays a crucial role in protecting the surrounding area from debris and flood damage, highlighting the importance of effective water resource management in the face of changing climate patterns.
Managed by the California Department of Water Resources, San Sevaine Basin #5 stands as a vital infrastructure for ensuring the safety and security of the community. With a focus on debris control and flood risk reduction, this dam exemplifies the proactive measures taken to safeguard water resources amidst the challenges posed by climate variability. As a key component of the local water infrastructure, its efficient operation and maintenance are essential for sustainable water management in the region.
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 San Sevaine Basin #5 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Fontana Uwc Surface Div Nr Fontana Ca | 26 cfs | → |
| Fontana Ph Forebay Spillway Nr Fontana Ca | 4 cfs | → |
| Fontana Uwc Surface Div Weir 2 Nr Fontana Ca | 23 cfs | → |
| Lytle C Nr Fontana Ca | 43 cfs | → |
| Fontana Water Co Spill Ch From Afterbay Nr Fontana | 24 cfs | → |
| Cajon C Bl Lone Pine C Nr Keenbrook Ca | 12 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near San Sevaine Basin #5.
Boat launches
Campgrounds
Fishing spots
- Cucamonga-Guasti Regional Park Lake
- Glen Helen Lakes
- Mt Baldy Trout Pools
- Lake Evans
- Secombe Lake
- Silverwood Lake State Recreation Area
Paddle runs
- Middle Fork - Commanche Campsite To Middle Fork Trailhead
- Laurel Gulch To Confluence With Mineo Canyon (Se 1/4, Sw 1/4, Sec 17, T2n, R8w)
- East Fork - Confluence Of Vincent Gulch And Prairie Fork (Nw 1/4, Sw 1/4 Sec 16 ) To Laurel Gulch (Nw 1/4, Sw 1/4, Sec 17, T2n, R8w)
- Below 2w01 Crossing To Mojave Reservoir
- 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)
- Below Deep Creek Lake To Below 2w01 Crossing
Track San Sevaine Basin #5 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 San Sevaine Basin #5
Where does the data for San Sevaine Basin #5 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 San Sevaine Basin #5.