San Antonio Reservoir reservoir
San Antonio Reservoir
San Antonio Reservoir is a man-made lake located in Monterey County, California. It was created in 1965 by the construction of an earthfill dam across the San Antonio River. The reservoir has a capacity of approximately 62,000 acre-feet and is used primarily for agricultural irrigation. The reservoir receives water from various sources including surface flows from the San Antonio River and its tributaries, as well as from snowpack melting from nearby mountains. The reservoir is also used for recreational activities such as fishing and boating. In recent years, the reservoir has faced challenges due to drought conditions and water shortages leading to decreased agricultural production. However, efforts are being made to conserve water resources and improve the management of the reservoir.
Daily levels at San Antonio Reservoir
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 San Antonio Reservoir -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| San Antonio C Nr Sunol Ca | · | → |
| Alameda C Bl Welch C Nr Sunol Ca | 12 cfs | → |
| Indian C Nr Sunol Ca | 0 cfs | → |
| Arroyo De La Laguna A Verona Ca | 13 cfs | → |
| Alameda C Bl Calaveras C Nr Sunol Ca | 10 cfs | → |
| Calaveras C Nr Sunol Ca | 8 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near San Antonio Reservoir.
⚓ Boat launches
- Lake Elizabeth Boat Ramp
- Chelsea Drive 5094, Newark
- Santa Clara County
- Palo Alto Boat Launch
- San Francisco Bay Trail East Palo Alto
- California Aqueduct Bikeway, Byron
⛺ Campgrounds
More campgrounds →🎣 Fishing spots
More fishing →🛶 Paddle runs
- Gold Creek To Three Pools (Opal Creek Run)
- Headwaters To Mouth
- Headwaters To Ends One Quarter Mile South Of Bear Valley Road Bridge Segment 1: Ends 1/4 Mile South Of Bear Valley Road Bridge Segment 2: Caltrans Corporation Yard At Point Reyes Staton.
🛡 More reservoirs
More reservoirs →Track San Antonio Reservoir 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 San Antonio Reservoir
Where does the data for San Antonio Reservoir 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 San Antonio Reservoir.