Grant Lake reservoir
Grant Lake
Grant Lake is a man-made reservoir situated in Mono County, California. The lake was created in 1916 by the Los Angeles Department of Water and Power as a part of the Los Angeles Aqueduct system. The lake is fed by several sources, including Rush Creek and Lee Vining Creek, which are important surface flow providers, as well as snowpack melting during the spring and summer months. The water from the lake is used for irrigation of agricultural land in the surrounding area and also provides recreational activities such as fishing, boating, and camping. The lake is a vital hydrological resource in the area, and its water levels are closely monitored to ensure that it remains a sustainable source of water for the region.
Daily levels at Grant Lake
Storage volume, pool elevation, and total release plotted from the operating agency's daily observations.
Storage
acre-ft · code 2
Pool Elevation
ft · code 1
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 Grant Lake -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Deadman C A Big Springs Nr Crestview Ca | 33 cfs | → |
| Mf San Joaquin R Nr Mammoth Lakes Ca | 557 cfs | → |
| Hot C A Flume Nr Mammoth Lakes Ca | 58 cfs | → |
| Green Creek Near Bridgeport | 49 cfs | → |
| Robinson C At Twin Lks Outlet Nr Bridgeport | 101 cfs | → |
| Merced R A Happy Isles Bridge Nr Yosemite Ca | 1,750 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Grant Lake.
⛺ Campgrounds
- Grant Lake Campground
- Aerie Crag Rv Camp
- Aerie Crag Picnic Area
- Oh Ridge
- Oh! Ridge Campground
- Lower Lee Vining
🎣 Fishing spots
More fishing →🛶 Paddle runs
- Headwaters To Wilderness Boundary
- Headwaters To Walker Lake
- Sce Powerhouse To La Dept. Of Water And Power Diversion
- Saddlebag Lake Rna Boundary To State Highway 120
- Confluence With Glass Creek To Big Springs
- Headwaters Tributaries To Research Natural Area Boundary
🛡 More reservoirs
More reservoirs →Track Grant Lake in the Snoflo app
Save this reservoir as a favorite and set push alerts when storage crosses a threshold (e.g. "alert me at 80% of normal").
About Grant Lake
Where does the data for Grant 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 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 reservoir, 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 Grant Lake.