Reservoir Report

U San Leandro reservoir

California, USA USBR
Today high
--
Tonight low
--
Current storage
37,420acre-ft
% of normal
4%
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Right now · current storage
U San Leandro
USBR · USL
37,420 acre-ft
As of 2026-05-11
Seasonal avg
35,897
Record max
41,250
24h change
0.0%
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U San Leandro -- None reservoir
U San Leandro None
About this reservoir

U San Leandro

San Leandro Creek is a major watershed located in the East Bay region of the San Francisco Bay Area. The creek flows 11 miles from its headwaters in the Oakland Hills through the cities of San Leandro and Hayward, eventually emptying into San Francisco Bay. Historically, the creek and surrounding area were inhabited by the Ohlone people. Today, the creek serves as a critical source of water for local communities and agriculture, with surface flow provided by the East Bay Municipal Utility District and snowpack providers including the Sierra Nevada Mountains. The watershed also supports agricultural activities such as vineyards and farming, as well as recreational activities like hiking and fishing. However, the creek and surrounding area face challenges from pollution, erosion, and urbanization.

StateNone
OperatorUSBR
Site IDUSL
Percent of normal4%
Last updated2026-05-11
Records since2021
Storage trends

Daily levels at U San Leandro

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 U San Leandro -- inflows here typically show up in storage 24-72 hours later.

Track U San Leandro 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 U San Leandro

Where does the data for U San Leandro 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 U San Leandro.

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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