Del Valle reservoir
Del Valle
Del Valle is a reservoir located in Alameda County, California. The reservoir was created in 1968 when the Del Valle Dam was constructed on Arroyo Valle. The dam was built for flood control, irrigation, water supply, and recreation. The reservoir has a capacity of 77,000 acre-feet and serves as a crucial water source for the Bay Area. The hydrology of Del Valle is largely influenced by the snowpack in the Sierra Nevada Mountains, which melts in the spring and provides surface flow to the reservoir. The reservoir is also fed by Arroyo Valle Creek and Arroyo Mocho. Del Valle is used for agricultural purposes, including vineyards and cattle ranching, as well as for recreational activities such as boating, fishing, and camping.
Daily levels at Del Valle
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 Del Valle -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Arroyo Valle Nr Livermore Ca | 6 cfs | → |
| Indian C Nr Sunol Ca | 0 cfs | → |
| Arroyo Valle Bl Lang Cn Nr Livermore Ca | 2 cfs | → |
| San Antonio C Nr Sunol Ca | · | → |
| Arroyo De La Laguna A Verona Ca | 11 cfs | → |
| Alameda C Bl Welch C Nr Sunol Ca | 12 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Del Valle.
Boat launches
- Lake Elizabeth Boat Ramp
- California Aqueduct Bikeway, Byron
- Chelsea Drive 5094, Newark
- Santa Clara County
- Palo Alto Boat Launch
- San Francisco Bay Trail East Palo Alto
Campgrounds
- Venados Group Camp
- Hetch Hetchy Group Camp
- Ardilla Group Camp
- Eagles View Group Camp
- Cedar Group Camp
- Wild Turkey Group Camp
Fishing spots
Paddle runs
More reservoirs
Track Del Valle 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 Del Valle
Where does the data for Del Valle 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 Del Valle.