River Report

Lake Fork River river

2 streamgauges 75% of normal Last updated 2026-06-13
Aggregate flow
517cfs
% of normal
75%
Daily volume
1,025AF
Seasonal avg
686cfs

Total streamflow across the Lake Fork River was last observed at 517 cfs, and is expected to yield approximately 1,025 acre-ft of water today; about 75% of normal. Average streamflow for this time of year is 686 cfs, with recent peaks last observed on 2011-06-30 when daily discharge volume was observed at 2,750 cfs.

Maximum discharge along the river is currently at the Lake Fork River Bl Moon Lake Nr Mountain Home reporting a streamflow rate of 380 cfs. However, the streamgauge with the highest stage along the river is the Lake Fork River Ab Moon Lake with a gauge stage of 2.72 ft. This river is monitored from 2 different streamgauging stations along the Lake Fork River, the highest being situated at an altitude of 8,190 ft, the Lake Fork River Ab Moon Lake.

Highest stage

Lake Fork River Ab Moon Lake

2.72ft
Highest-elevation gauge

Lake Fork River Ab Moon Lake

8,190ft
Aggregate trend

River streamflow levels

Daily aggregate streamflow across every monitored gauge along the Lake Fork River. Use the range buttons to zoom in on a specific period.

Total streamflow

Sum of all monitored streamgauges · daily

Per-gauge breakdown

Every streamgauge along the Lake Fork River

All 2 USGS gauges Snoflo tracks for this river, with current flow, stage, recent change, percent of normal, and the gauge's all-time min / max. Click any header to sort. Cells are heatmapped relative to the column min/max -- darker blue = higher.

Streamgauge Streamflow (cfs) Gauge stage (ft) 24h Δ (%) % Normal Min (cfs) Max (cfs) Elevation (ft)
Lake Fork River Ab Moon Lake UT
USGS 09289500
137 2.72 -2.1 34% 18 2,750 8,190
Lake Fork River Bl Moon Lake Nr Mountain Home UT
USGS 09291000
380 2.34 2.2 102% 0 1,550 7,934
Annual peaks

Maximum streamflow discharge by year

The single highest aggregate discharge recorded each year. Spotting the multi-year trend reveals droughts vs. wet cycles long before the headline daily flow does.

Annual peak discharge

From the river's full record · one point per water year

Profile

Streamflow elevation profile

Each bubble is one gauge along the river, plotted by current streamflow (x-axis) vs elevation (y-axis), sized by gauge stage. Reading top-to-bottom traces the river from headwaters down to its mouth -- you can see flow accumulate as elevation drops.

Elevation vs streamflow

One point per monitored gauge · bubble size = gauge stage

About this river

Lake Fork River

The Lake Fork River is a scenic river that flows through Colorado and Wyoming. It stretches for approximately 70 miles, and its headwaters are located in the Snowy Range Mountains. The river is known for its excellent fishing opportunities, particularly for trout. The river is also home to several reservoirs, including the Rob Roy Reservoir, which is located in Wyoming. The river's flow is regulated by several dams, including the Rob Roy Dam and the Lake Hattie Dam. The Lake Fork River is used for both recreational and agricultural purposes. It is a popular destination for fishing, camping, and boating, and it is also used for irrigation by local farmers. Despite its popularity, the Lake Fork River remains a pristine and beautiful natural resource, and it is an important part of the local landscape.

Track the Lake Fork River in the Snoflo app

Set per-gauge push alerts (e.g. "alert me when flow at the Russian R Nr Healdsburg crosses 5,000 cfs"), and Snoflo's iOS app pushes the moment USGS reports the crossing.

FAQ

About the Lake Fork River

Where does the data for the Lake Fork River come from?

Streamflow and gauge stage data are sourced from the U.S. Geological Survey (USGS) National Water Information System. The aggregate flow shown at the top of the page is computed by Snoflo as the sum of all monitored gauges along the river.

How is "percent of normal" calculated?

Today's aggregate streamflow is compared to the historical average aggregate streamflow on this calendar day across the river's full record. 100% means right on average; values above 100% indicate above-normal flow (wet year); values below indicate below-normal (dry year or drought).

Why are some gauges showing very different flows?

Gauges along a river measure flow at different points: headwater gauges read what's coming off the snowpack or mountain runoff; downstream gauges integrate everything upstream, including tributary inputs. Wide spreads usually mean a tributary is contributing significantly between gauges.

What's the elevation profile chart showing?

Each bubble is one gauge along the river, plotted by streamflow (x-axis) and elevation (y-axis), sized by gauge stage. Reading top-down traces the river from headwaters to mouth -- you can see flow build as elevation drops.

Can I get alerts when a specific gauge crosses a threshold?

Yes -- alerts are managed in the Snoflo iOS app on a per-gauge basis. Open any individual streamgauge from the table above and favorite it to set a discharge threshold.