Lang Creek Detention Basin dam
Lang Creek Detention Basin
Lang Creek Detention Basin, located in Thousand Oaks, California, serves as a crucial flood risk reduction structure along the Lang Creek. Completed in 2004, this earth dam stands at a height of 67 feet, with a hydraulic height of 60.2 feet, providing a storage capacity of 263 acre-feet to mitigate potential flooding events in the area. The basin covers a surface area of 12 acres and has been deemed to have a high hazard potential, although its condition assessment remains satisfactory as of September 2017.
Owned and regulated by the local government, Lang Creek Detention Basin undergoes regular inspections and enforcement measures to ensure its structural integrity and operational efficiency. With the State of California overseeing its permitting, inspection, and enforcement processes, the dam is maintained in compliance with safety standards to protect the surrounding community from flood-related risks. Additionally, the basin's emergency action plan is continuously reviewed and updated to meet guidelines, with emergency contacts readily available for any potential incidents that may arise.
Managed by the Los Angeles District of the US Army Corps of Engineers, Lang Creek Detention Basin plays a vital role in safeguarding the Ventura County area from the impacts of flooding. With its strategic location and design, the basin serves as a key component in the regional flood risk reduction infrastructure, highlighting the importance of effective water resource management and climate resilience efforts in mitigating natural hazards. Its successful operation and maintenance demonstrate a commitment to ensuring the safety and well-being of the local community in the face of environmental challenges.
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 Lang Creek Detention Basin -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Calleguas C Nr Camarillo Ca | 6 cfs | → |
| Santa Clara R Nr Piru Ca | 59 cfs | → |
| Sespe C Nr Fillmore | 40 cfs | → |
| Piru Creek Below Santa Felicia Dam Ca | 35 cfs | → |
| Santa Paula C Nr Santa Paula | 11 cfs | → |
| Los Angeles R A Sepulveda Dam Ca | 60 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Lang Creek Detention Basin.
Boat launches
- Piru Canyon Road 4780, Castaic
- Lake Hughes Road Castaic
- Pierpont Harbor Public Launch Ramp
- Interstate 5, Lebec
Campgrounds
Fishing spots
Paddle runs
- Headwaters In The Santa Monica Mountains To Mouth At Pacific Ocean
- Lower Piru Creek (Oulet At Pyramid Reservoir) To Piru Reservoir
- Site Of St Francis Dam Disaster To Seco Canyon At The Nf Boundary
- Castaic To Pyramid Reservoir
- Section Line To Confluence With Rock Creek
- Chorro Grande Canyon To Section Line Dividing Sec 1, T5n, R23w And Sec 6, T5n, T22w
Track Lang Creek Detention Basin 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 Lang Creek Detention Basin
Where does the data for Lang Creek Detention Basin 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 Lang Creek Detention Basin.