Lk Eleanor Nr Hetch Hetchy Ca reservoir
Lk Eleanor Nr Hetch Hetchy Ca
Lake Eleanor is a reservoir located in Hetch Hetchy Valley, California. The reservoir was constructed in the early 1900s to provide water and hydroelectricity to San Francisco. The lake is fed by the Tuolumne River and is surrounded by the Sierra Nevada mountains. The hydrology of the area is influenced by the snowmelt from the surrounding mountains. The lake provides surface water for San Francisco, Modesto, and Turlock, and also supports hydropower generation. The area around the lake is not used for agriculture, but is popular for recreational activities such as camping, hiking, and fishing. The lake has a capacity of 28,000 acre-feet and is managed by the San Francisco Public Utilities Commission. The surrounding area is protected by the Yosemite National Park.
Daily levels at Lk Eleanor Nr Hetch Hetchy Ca
Storage volume, pool elevation, and total release plotted from the operating agency's daily observations.
Reservoir storage, acre-ft
ac-ft · code 00054
Lake or reservoir water surface elevation above NGVD 1929, ft
ft · code 62614
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 Lk Eleanor Nr Hetch Hetchy Ca -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Lk Eleanor Div To Cherry Lake Nr Hetch Hetchy Ca | 1 cfs | → |
| Eleanor C Nr Hetch Hetchy Ca | 21 cfs | → |
| Cherry C Bl Valley Dam Nr Hetch Hetchy Ca | 7 cfs | → |
| Tuolumne R Nr Hetch Hetchy Ca | 133 cfs | → |
| Cherry C Nr Early Intake Ca | 29 cfs | → |
| Tuolumne R Ab Early Intake Nr Mather Ca | 147 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Lk Eleanor Nr Hetch Hetchy Ca.
Boat launches
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Campgrounds
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Fishing spots
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River runs
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About Lk Eleanor Nr Hetch Hetchy Ca
Where does the data for Lk Eleanor Nr Hetch Hetchy Ca 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.