Green River below Fontenelle Reservoir, WY

Sweetwater County, Wyoming · USGS gauge 09211200 · NWS GBFW4 · Green River flood status · Wyoming river levels

Is Green River below Fontenelle Reservoir, WY flooding right now?

Green River below Fontenelle Reservoir, WY measured 11.18 ft on 2026-09-11 01:00:00 UTC. That observation was 5.3 ft below its 16.5 ft flood stage. This is the latest available reading, not a guarantee of current conditions.

Gauge height
11.18 ft
as of 2 hours ago
Streamflow
732 cfs
data refreshed just now

Minor flooding here begins at 16.5 ft, with major flooding at 18.5 ft. The highest crest on record was 18.74 ft on Sun, Sep 5, 1965.

Flood forecast

NWS forecast, issued 11 hours ago. Forecasts are issued for select river points and update through the day.

Flood stages at this gauge

CategoryStageCurrent distance
Action15.5 ft4.3 ft below
Minor flood16.5 ft5.3 ft below
Moderate flood17.5 ft6.3 ft below
Major flood18.5 ft7.3 ft below

New to these numbers? What does flood stage mean? · How to read a river gauge · Why is the river rising?

Highest crests on record

StageDate
18.74 ft1965-09-05
17.79 ft1972-06-14
17.74 ft1982-07-03
17.69 ft1986-06-19
17.24 ft1985-05-04

Nearby gauges

GaugeDistanceCounty
Green River near La Barge, WY13.2 miLincoln County
Big Sandy River at Gasson Bridge, near Eden, WY19.2 miSweetwater County
Fontenelle C near Herschler Ranch, near Fontenelle, WY19.5 miLincoln County
Labarge Creek above Viola, WY27.5 miSublette County
Big Sandy River below Farson, WY29.5 miSweetwater County
Provisional data: Real-time readings are provisional and subject to revision by the USGS — sensors can be affected by ice, debris, or equipment malfunction. Do not rely on this site for decisions involving personal safety; follow official guidance from the National Weather Service and local authorities.

Sources: USGS monitoring location · NWS gauge & forecast