Beardsley Lake reservoir
Beardsley Lake
Beardsley Lake is a reservoir located in the Sierra Nevada Mountains in California. The lake was created in 1923 with the construction of Beardsley Dam, which was built for hydroelectric power generation. The lake is fed by the Middle Fork Stanislaus River and is used as a storage facility for water that is released to generate electricity. The area also receives snowpack that melts and flows into the lake. The lake provides water for agricultural uses such as irrigation and recreation activities such as fishing, boating, and camping. The lake has a surface area of 600 acres and a maximum depth of 240 feet. Overall, Beardsley Lake plays an important role in providing water resources and recreational opportunities for the surrounding communities.
Daily levels at Beardsley Lake
Storage volume, pool elevation, and total release plotted from the operating agency's daily observations.
Storage
acre-ft · code 2
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 Beardsley Lake -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Cherry C Bl Valley Dam Nr Hetch Hetchy Ca | 7 cfs | → |
| Lk Eleanor Div To Cherry Lake Nr Hetch Hetchy Ca | 1 cfs | → |
| Eleanor C Nr Hetch Hetchy Ca | 21 cfs | → |
| Cherry C Nr Early Intake Ca | 29 cfs | → |
| Cherry C Bl Dion R Holm Ph | 65 cfs | → |
| Tuolumne R Bl Early Intake Nr Mather Ca | 174 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Beardsley Lake.
Boat launches
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Campgrounds
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Fishing spots
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River runs
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About Beardsley Lake
Where does the data for Beardsley Lake come from?
Daily storage, pool elevation, and release rates are sourced from USGS, USBR, and USACE monitoring stations. Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.
How often is the report updated?
Storage observations are updated daily by the operating agency. The 15-day weather forecast refreshes throughout the day. Snoflo caches and renders the most recent observation -- check the "as of" timestamp on the storage card.
What does the Hazard 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 reservoir, set a threshold, and you'll get a push the moment conditions cross.