Reservoir Report

Williams Fork Reservoir reservoir

Colorado, USA USBR
Today high
--
Tonight low
--
Current storage
49,223acre-ft
% of normal
-36%
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Right now · current storage
Williams Fork Reservoir
USBR · 100053
49,223 acre-ft
As of 2026-05-12
Seasonal avg
76,371
Record max
139,589
24h change
0.1%
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Williams Fork Reservoir -- None reservoir
Williams Fork Reservoir None
About this reservoir

Williams Fork Reservoir

Williams Fork Reservoir is located in Grand County, Colorado and was built in 1959 to provide hydroelectric power and water storage for the Front Range cities of Denver and Aurora. The reservoir is fed by the Williams Fork River and has a capacity of 97,000 acre-feet. The area surrounding the reservoir is known for its abundant snowpack during the winter months, which provides much of the water for the reservoir. The reservoir is also used for agricultural irrigation and recreational activities such as fishing, boating, and camping. The Williams Fork Reservoir is an important source of water for the region and plays a crucial role in supporting both the economy and environment of the surrounding areas.

StateNone
OperatorUSBR
Site ID100053
Percent of normal-36%
Last updated2026-05-12
Records since2005
Storage trends

Daily levels at Williams Fork Reservoir

Storage volume, pool elevation, and total release plotted from the operating agency's daily observations.

Storage

acre-ft · code 17

Pool Elevation

ft · code 49

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 Williams Fork Reservoir -- inflows here typically show up in storage 24-72 hours later.

Track Williams Fork Reservoir 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 Williams Fork Reservoir

Where does the data for Williams Fork Reservoir 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 Williams Fork Reservoir.

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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