Reservoir Report

Lost Lake reservoir

Utah, USA USBR
Today high
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Tonight low
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Current storage
1,132acre-ft
% of normal
12%
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Next 24 hours
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Right now · current storage
Lost Lake
USBR · 3608
1,132 acre-ft
As of 2026-06-29
Seasonal avg
1,015
Record max
1,245
24h change
-0.4%
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Lost Lake -- Utah reservoir
Lost Lake Utah
About this reservoir

Lost Lake

Lost Lake is a high-altitude lake located in the Uinta Mountains of Utah. The lake is primarily fed by snowpack, which melts in the spring and summer months. Lost Lake is part of the Provo River watershed and provides water to the Provo River, which is a vital source of irrigation water for agricultural use in the region. The lake also supports recreational activities, such as fishing and camping. Lost Lake is part of the High Uintas Wilderness Area and has a rich history, with evidence of human habitation dating back over 10,000 years. The lake was named by early settlers in the area who believed it was a "lost" lake due to its hidden location. Despite its remote location, the lake is popular among outdoor enthusiasts and provides important ecosystem services to the surrounding area.

StateUtah
OperatorUSBR
Site ID3608
Percent of normal12%
Last updated2026-06-29
Records since2003
Storage trends

Daily levels at Lost Lake

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

Storage

acre-ft · code 17

Inflow

cfs · code 29

Pool Elevation

ft · code 49

Total Release

cfs · code 42

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

Around the water

Make a day of it

Boat launches, lakeside camping, fishing access, and other reservoirs near Lost Lake.

FAQ

About Lost Lake

Where does the data for Lost Lake 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 below 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.