Reservoir Report

Lake Silverwood reservoir

California, USA USBR
Today high
--
Tonight low
--
Current storage
71,188acre-ft
% of normal
2%
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Right now · current storage
Lake Silverwood
USBR · SLW
71,188 acre-ft
As of 2026-05-11
Seasonal avg
69,683
Record max
73,987
24h change
0.0%
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Lake Silverwood -- None reservoir
Lake Silverwood None
About this reservoir

Lake Silverwood

Lake Silverwood is a reservoir located in Southern California's San Bernardino County. It was created in 1971 as part of the State Water Project and is now managed by the California Department of Water Resources. The lake has a capacity of 73,000 acre-feet of water and serves as a crucial source of hydroelectric power and irrigation for surrounding agricultural areas. The lake is fed by the Mojave River and snowpack from nearby mountains. Its primary recreational uses include fishing, boating, and camping. The area surrounding the lake has a rich history, with evidence of Native American settlements and mining activities dating back centuries. Today, Lake Silverwood remains an important resource for the region's economy and ecosystem.

StateNone
OperatorUSBR
Site IDSLW
Percent of normal2%
Last updated2026-05-11
Records since2011
Storage trends

Daily levels at Lake Silverwood

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 Lake Silverwood -- inflows here typically show up in storage 24-72 hours later.

Track Lake Silverwood 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 Lake Silverwood

Where does the data for Lake Silverwood 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.

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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