San Luis Reservoir (federal) Reservoir
San Luis Reservoir (Federal)
San Luis Reservoir is a federal reservoir located in California, USA. It was created in 1962 by the construction of the San Luis Dam on San Luis Creek. The reservoir has a capacity of 2,041,000 acre-feet and is used for hydroelectric power generation, irrigation, and recreational activities. The reservoir is fed by water from the Sacramento-San Joaquin Delta via the California Aqueduct and the Delta-Mendota Canal. It is also supplied by the snowpack in the Sierra Nevada Mountains. The reservoir is primarily used for agriculture, providing water to over 1.5 million acres of farmland in the San Joaquin Valley. Additionally, it provides opportunities for fishing, boating, and camping to the public. The reservoir is managed by the Bureau of Reclamation.
Daily levels at San Luis Reservoir (Federal)
Storage volume, pool elevation, and total release plotted from the operating agency's daily observations.
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 San Luis Reservoir (Federal) -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Mud Slough Nr Gustine Ca | 12 cfs | → |
| Salt Slough A Hwy 165 Nr Stevinson Ca | 63 cfs | → |
| Pacheco C Nr Dunneville Ca | · | → |
| San Joaquin R A Fremont Ford Bridge Ca | 55 cfs | → |
| Orestimba C Nr Newman Ca | · | → |
| Tres Pinos C Nr Tres Pinos Ca | 4 cfs | → |
About San Luis Reservoir (Federal)
Where does the data for San Luis Reservoir (federal) 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.
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