Reservoir Report

Chabot reservoir

California, USA USBR
Today high
--
Tonight low
--
Current storage
9,350acre-ft
% of normal
1%
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Right now · current storage
Chabot
USBR · CHB
9,350 acre-ft
As of 2026-05-11
Seasonal avg
9,227
Record max
12,010
24h change
-0.1%
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Chabot -- None reservoir
Chabot None
About this reservoir

Chabot

Chabot Reservoir is a man-made lake located in Alameda County, California. It was created in 1874 by the construction of an earthen dam across San Leandro Creek to provide water for the growing population of Oakland. The reservoir has a capacity of 3.2 billion gallons and is used as a major water supply source for the East Bay Municipal Utility District. The hydrology of Chabot is primarily fed by San Leandro Creek and a network of smaller tributaries. The snowpack from the Sierra Nevada Mountains also contributes to the reservoir's water supply. The water from Chabot is mainly used for domestic purposes, irrigation, and recreation. The reservoir is a popular spot for fishing, boating, hiking, and picnicking. The surrounding area is also home to several parks, including the Anthony Chabot Regional Park.

StateNone
OperatorUSBR
Site IDCHB
Percent of normal1%
Last updated2026-05-11
Records since2021
Storage trends

Daily levels at Chabot

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

Detailed forecast

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.

Hourly detail

Next 5 days, hour by hour

Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.

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Deep dive

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.

TimeConditionTemp (°F)Snow (in)Rain (in)Humidity (%)Wind (mps)Wind dir
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Long-term outlook

15-day temperature & precipitation

Daily temperatures, snow, and rain projected over the next two weeks.

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Regional inflow

Nearby streamflow gauges

USGS streamgauges around Chabot -- inflows here typically show up in storage 24-72 hours later.

Track Chabot 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").

FAQ

About Chabot

Where does the data for Chabot 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.

More reservoirs

Other water bodies near here

Snoflo-tracked reservoirs and dams within driving distance of Chabot.

Premium feature

Favorites and alerts are part of Snoflo Premium. Save reservoirs, set storage thresholds, and get push notifications when conditions cross.

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Manage alerts in the Snoflo app

Custom alerts are configured in the iOS app -- favorite this reservoir, set a threshold, and you'll get a push the moment conditions cross.

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