Stone Canyon dam
Stone Canyon
Stone Canyon, also known as Stone Canyon Reservoir, is a critical water supply infrastructure located in Westwood Village, California. Managed by the local government, this earth dam structure was completed in 1924 and stands at a height of 188 feet, with a maximum storage capacity of 10,372 acre-feet. The reservoir serves the primary purpose of water supply, drawing from the Stone Canyon Creek and covering a surface area of 138 acres within a drainage area of 1.4 square miles.
Despite its age, Stone Canyon Reservoir has been regularly inspected and maintained to ensure its satisfactory condition and high hazard potential is managed effectively. The dam is regulated by the Department of Water Resources and subject to state permitting, inspection, and enforcement. With its strategic location and historical significance, Stone Canyon plays a crucial role in water resource management in Los Angeles County, offering a reliable source of water for the surrounding communities while adhering to strict safety standards and guidelines.
Enthusiasts of water resources and climate will appreciate the resilience and functionality of Stone Canyon Reservoir, as it continues to provide essential water supply services in a region prone to droughts and water scarcity. The dam's impressive hydraulic height of 174.8 feet and its association with the Stone Canyon Creek highlight its importance in sustaining the local ecosystem and supporting sustainable water management practices. As a key component of California's water infrastructure, Stone Canyon stands as a testament to the state's commitment to ensuring reliable and safe water resources for its residents.
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 Stone Canyon -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Los Angeles R A Sepulveda Dam Ca | 42 cfs | → |
| Big Tujunga C Bl Hansen Dam Ca | · | → |
| Arroyo Seco Nr Pasadena Ca | 14 cfs | → |
| Rio Hondo Bl Whittier Narrows Dam Ca | 18 cfs | → |
| Rio Hondo Ab Whittier Narrows Dam Ca | 90 cfs | → |
| San Gabriel R Ab Whittier Narrows Dam Ca | 30 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Stone Canyon.
Boat launches
Campgrounds
- Musch Hike-In Camp
- Musch Ranch Hike-In
- Dockweiler Beach Rv
- Malibu Creek Family
- Malibu Creek Group Walk-In
- Malibu Creek - State Park
Fishing spots
Paddle runs
- West Fork - Headwaters (Se 1/4, Ne 1/4, Sec 14, T2n, R12w) To Cogswell Reservoir (Ne 1/4, Sw 1/4, Sec 24, T2n, R9w
- Headwaters In The Santa Monica Mountains To Mouth At Pacific Ocean
- 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)
- Site Of St Francis Dam Disaster To Seco Canyon At The Nf Boundary
- Lower Piru Creek (Oulet At Pyramid Reservoir) To Piru Reservoir
- Cooper Canyon- Near State Highway 2 (Sw 1/4, Ne 1/4, Sec 16, T3n, R10w To Confluence With Little Rock Creek
Track Stone Canyon 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 Stone Canyon
Where does the data for Stone Canyon 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 Stone Canyon.