Perris Hill Reservoir dam
Perris Hill Reservoir
Perris Hill Reservoir, located in San Bernardino, California, serves as a vital water supply source for the local community. Completed in 1962, this offstream reservoir has a dam height of 31 feet and a storage capacity of 31 acre-feet. Managed by the local government, the reservoir is regulated and inspected by the Department of Water Resources, ensuring its safety and compliance with state standards.
With a primary purpose of water supply, Perris Hill Reservoir plays a crucial role in meeting the water needs of San Bernardino and surrounding areas. Despite being classified as having a high hazard potential, the reservoir's condition is assessed as satisfactory, with the last inspection in May 2020 confirming its operational integrity. The reservoir's emergency action plan is regularly updated and meets guidelines to ensure swift response in case of any unforeseen events.
For water resource and climate enthusiasts, Perris Hill Reservoir stands as a testament to effective water management and infrastructure in California. Its strategic location, efficient design, and ongoing regulatory oversight highlight the importance of sustainable water supply systems in the face of changing climate patterns. As a key component of the local water infrastructure, Perris Hill Reservoir exemplifies the commitment to securing water resources for the community's present and future needs.
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 Perris Hill Reservoir -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Sand Canyon C Nr Highland Ca | 1 cfs | → |
| E Twin C Nr Arrowhead Springs Ca | 2 cfs | → |
| Waterman Cyn C Nr Arrowhead Spgs Ca | 2 cfs | → |
| Warm C Nr San Bernardino Ca | · | → |
| City C Nr Highland Ca | 3 cfs | → |
| Lytle C A Colton Ca | · | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Perris Hill Reservoir.
Boat launches
Campgrounds
- Dogwood
- Dogwood Campground
- Dogwood Family Campground
- Camp Seely
- Glen Helen Regional Park
- North Shore Family Campground
Fishing spots
Track Perris Hill Reservoir 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 Perris Hill Reservoir
Where does the data for Perris Hill Reservoir 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 Perris Hill Reservoir.