San Gabriel reservoir
San Gabriel
San Gabriel is a city located in Los Angeles County, California. The area is rich in history as it was inhabited by Tongva Native Americans before Spanish colonizers arrived in the 1770s. The San Gabriel River runs through the city and is a vital source of water for the area. The river is fed by snowpack from the San Gabriel Mountains, which also provide water for local reservoirs. The city's main agricultural crop is citrus, while recreational activities include hiking, camping, and fishing. Additionally, the San Gabriel Mountains provide opportunities for skiing and snowboarding during winter months. The city is also home to the historic San Gabriel Mission, which was established in 1771 as part of the Spanish colonization of California.
Daily levels at San Gabriel
Storage volume, pool elevation, and total release plotted from the operating agency's daily observations.
Storage
acre-ft · code 2
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 Gabriel -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| San Gabriel R Bl Santa Fe Dam Nr Baldwin Pk Ca | · | → |
| Big Rock C Nr Valyermo Ca | 21 cfs | → |
| San Antonio C A Riverside Dr Nr Chino Ca | 2 cfs | → |
| San Gabriel R Ab Whittier Narrows Dam Ca | 10 cfs | → |
| Chino C A Schaefer Avenue Nr Chino Ca | 0 cfs | → |
| Rio Hondo Ab Whittier Narrows Dam Ca | 1 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near San Gabriel.
Boat launches
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Campgrounds
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Fishing spots
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River runs
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About San Gabriel
Where does the data for San Gabriel 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.