Harrison Street dam
Harrison Street
Harrison Street Dam, located in Riverside, California, is a crucial infrastructure owned by the local government for flood risk reduction along Harrison Creek. Built in 1954, this Earth-type dam stands at a height of 50 feet with a hydraulic height of 44.5 feet, serving a drainage area of 2.03 square miles. With a storage capacity of 208 acre-feet and covering an area of 14 acres, this dam plays a vital role in managing water flow and mitigating potential flooding in the region.
Managed by the California Department of Water Resources (DWR) for dam safety, Harrison Street Dam has a hazard potential rated as high but is currently assessed to be in satisfactory condition. Regular inspections, with the last one conducted in January 2020, ensure its operational integrity. Despite its age, the dam continues to serve its primary purpose effectively, highlighting the importance of ongoing monitoring and maintenance to safeguard surrounding communities and water resources.
With a spillway width and discharge capacity not specified, Harrison Street Dam remains a critical piece of infrastructure under state regulation and enforcement. As a notable flood risk reduction measure, this dam's role in the region's water resource management is underscored by its design, construction, and ongoing operation. As climate change impacts increase the frequency and intensity of extreme weather events, the importance of structures like Harrison Street Dam in protecting against floods and ensuring water security only grows in significance.
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 Harrison 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 | → |
| Temescal C A Corona Lk Nr Corona Ca | · | → |
| Cucamonga C Nr Mira Loma Ca | 19 cfs | → |
| Santa Ana R Bl Prado Dam Ca | 114 cfs | → |
| Perris Valley Storm Dr A Nuevo Rd Nr Perris Ca | · | → |
| San Jacinto R Nr Sun City Ca | · | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Harrison Street.
Boat launches
- Vacation Drive 28736, Canyon Lake
- Goetz Road Riverside County
- Eucalyptus Park Road, San Dimas
- Pacific Crest Trail, Hesperia
- Warren Road 37701, Temecula
Campgrounds
- Rancho Jurupa Park
- March Arb Military
- Prado Regional Park
- Lake Elsinore
- Lake Perris State Rec Area
- Blue Jay
Fishing spots
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
- 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
More reservoirs
Track Harrison 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 Harrison Street
Where does the data for Harrison 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 Harrison Street.