Stanislaus Forebay East dam
Stanislaus Forebay East
Located in Murphys, California, Stanislaus Forebay East is a private hydroelectric dam on the North Fork Stanislaus River-os. Built in 1908, this Earth-type dam stands at 55 feet tall and spans 400 feet in length, with a storage capacity of 320 acre-feet. The dam's primary purpose is hydroelectric power generation, making it an essential resource in the region.
Managed by the Federal Energy Regulatory Commission, Stanislaus Forebay East has a low hazard potential and a moderate risk assessment rating. While the condition assessment is not currently available, the dam undergoes regular inspections and has an emergency action plan in place. With a maximum discharge capacity of 540 cubic feet per second and an uncontrolled spillway width of 34 feet, this dam plays a crucial role in water resource management and climate resilience efforts in the area.
Overall, Stanislaus Forebay East remains a key infrastructure for hydroelectric power generation in Tuolumne County, California. With its historical significance and ongoing regulatory oversight, this dam serves as a vital component in the region's water resource management strategy and contributes to the sustainable development of the local community. For water resource and climate enthusiasts, this site offers valuable insights into the intersection of energy production, environmental conservation, and emergency preparedness.
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 Stanislaus Forebay East -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Black C Nr Copperopolis Ca | 1 cfs | → |
| Big C Ab Whites Gulch Nr Groveland Ca | 1 cfs | → |
| Cherry C Bl Valley Dam Nr Hetch Hetchy Ca | 144 cfs | → |
| Cherry C Bl Dion R Holm Ph | 1,720 cfs | → |
| Cherry C Nr Early Intake Ca | 581 cfs | → |
| Tuolumne R Bl Early Intake Nr Mather Ca | 2,200 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Stanislaus Forebay East .
Boat launches
- Glory Hole Road 6503, Angels Camp
- Forest Route 1n04, Groveland
- Forest Route 1n10 Tuolumne County
- Merals Pool Put-In
Campgrounds
- Columbia Airport Campground
- Calaveras Big Trees State Park
- Sand Bar Flat Campground
- Sand Bar Flat
- Frogtown Rv Park
- Boards Crossing
Fishing spots
Paddle runs
- Sandbar To Confluence With North Fork Stanislaus River
- Confluence With North Fork And Middle Fork Stanislaus To Clark Flat
- Below Mckay's Reservoir To Confluence With Middle Fork Stanislaus River
- One Mile Downstream Of State Park Boundary In Sec 24, T5n, R15e To Mckay's Reservoir
- Calaveras Big Trees State Park Boundary In Sec 24, T5n, R15e To One Mile Downstream Of State Park Boundary In Sec 24, T5n, R15e
- One-Quarter Mile Downstream Of Forest Road 5n75 Bridge Crossing To Calaveras Big Trees State Park Boundary In Sec 24, T5n, R15e
Track Stanislaus Forebay East 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 Stanislaus Forebay East
Where does the data for Stanislaus Forebay East 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 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 Stanislaus Forebay East .