San Andreas reservoir
San Andreas
The San Andreas Fault is a major geological feature that runs through California for over 800 miles. It is responsible for many earthquakes in the region, including the San Francisco earthquake of 1906. Hydrology in the region is important, as the fault is responsible for creating natural springs and streams that provide water to surrounding areas. Specific surface flow providers include the San Andreas Creek and the San Andreas River. Snowpack providers include the Sierra Nevada Mountains and the Cascade Range. Agriculture is an important use of the land surrounding the fault, with crops such as almonds, avocados, and citrus being grown in the region. Recreational activities include hiking, camping, and fishing in the many parks and wilderness areas surrounding the fault.
Daily levels at San Andreas
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 Andreas -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Pilarcitos C Bl Stone Dam Nr Hillsborough Ca | 5 cfs | → |
| San Mateo C Bl Lo Crystal Sp Res Nr San Mateo Ca | 4 cfs | → |
| Pilarcitos C A Half Moon Bay Ca | 11 cfs | → |
| San Francisquito C A Stanford University Ca | 8 cfs | → |
| San Lorenzo C A San Lorenzo Ca | 13 cfs | → |
| San Gregorio C A San Gregorio Ca | 15 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near San Andreas.
⚓ Boat launches
- San Andreas Trail San Bruno
- Sawyer Camp Trail San Mateo County
- San Francisco Bay Trail, South San Francisco
- J Hart Clinton Drive San Mateo
- Whidbey Lane Redwood City
- Harding Road San Francisco
⛺ Campgrounds
- Dispersed Camping
- Sweetwood Group Camp
- Half Moon Bay State Beach
- Candlestick Rv Park
- Rob Hill Campground
- Aquatic Park Cove
🎣 Fishing spots
More fishing →🛶 Paddle runs
- 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.
- Olema Ranch Campground To Caltrans Corporation Yard At Point Reyes Station
- Gold Creek To Three Pools (Opal Creek Run)
🛡 More reservoirs
More reservoirs →Track San Andreas 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 Andreas
Where does the data for San Andreas 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 Andreas.