Lower Franklin No. 2 dam
Lower Franklin No. 2
Lower Franklin No. 2, located in Beverly Hills, California, is a vital water supply structure managed by the local government. This earth dam, completed in 1982, stands at a height of 49 feet and has a storage capacity of 206 acre-feet. Situated on the Franklin Canyon stream, this dam serves the primary purpose of water supply for the region, showcasing its importance in sustaining the local water resources.
Maintained and regulated by the California Department of Water Resources (DWR) under the Safety of Dams program, Lower Franklin No. 2 has been deemed to have a low hazard potential and is in satisfactory condition as of the last assessment in 2017. With state-permitting, inspection, and enforcement protocols in place, this dam plays a crucial role in ensuring the resilience of the water infrastructure in Los Angeles County. The structure's compliance with safety standards and regular inspections further underscore its significance in water resource management.
Despite its modest surface area of 10 acres and a drainage area of 1.12 square miles, Lower Franklin No. 2 stands as a reliable asset in the region's water supply network. With its strategic location and functional design, this dam continues to contribute to the sustainable management of water resources in the area, highlighting the collaboration between local government agencies and state regulators in safeguarding vital infrastructure for the benefit of the community and the environment.
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 Lower Franklin No. 2 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Los Angeles R A Sepulveda Dam Ca | 38 cfs | → |
| Big Tujunga C Bl Hansen Dam Ca | · | → |
| Arroyo Seco Nr Pasadena Ca | 1 cfs | → |
| Rio Hondo Bl Whittier Narrows Dam Ca | · | → |
| Rio Hondo Ab Whittier Narrows Dam Ca | 1 cfs | → |
| San Gabriel R Ab Whittier Narrows Dam Ca | 28 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Lower Franklin No. 2.
Boat launches
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Campgrounds
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Fishing spots
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River runs
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About Lower Franklin No. 2
Where does the data for Lower Franklin No. 2 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 Low 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 below 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.
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.