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Hydrologic Outlook

Hydrologic Outlook

Hydrologic Outlook
National Weather Service Riverton WY
720 PM MDT Sun May 31 2020

...Higher Water Levels to continue this Week...

Snow in the far western Wyoming mountains between the 8,000 and
10,000 foot elevation will continue to melt during the coming
week. Monday will remain quite warm before temperatures cool
slightly through the week. However, even these cooler readings
will be above normal for early June. East of the Continental
Divide, the remaining snow is mainly confined to elevations above
9,000 feet. Much above normal temperatures will continue Monday
east of the Divide and an active snowmelt will continue all week.

Conditions will be mostly dry Monday with only isolated showers
and thunderstorms expected. The far northern mountains have a
better chance of rain showers Tuesday afternoon and evening. The
showers and thunderstorms will become more widespread from
Thursday afternoon into next weekend.

The greatest concern for minor flooding remains across western
Wyoming where the best snowpack persists. The river stages at both
Pacific Creek near Moran and the Gros Ventre River at Kelly will
generally remain bankfull. The Green River at La Barge is forecast
to climb to near action stage of 8.0 feet by Wednesday.

Other areas of concern include the upper Wind River from Dubois to
Kinnear. The river will be around flood stage around Dubois while
near bankfull downstream through Kinnear through midweek. Creeks
and streams along the west slope of the Bighorn Range, including
Tensleep Creek, Medicine Lodge Creek, and Paintrock Creek may run
bankfull at times through Monday. Rainfall Saturday evening caused
water levels to rise on these foothill creeks.

Remember, during active snowmelt runoff, mountain and foothill
creeks flow highest from late evening through early morning.
Recreationists should stay away from these cold, fast-moving
streams and avoid camping near any waterway. Do not attempt to
cross a creek or stream on foot as the power of the water will
easily carry you downstream.


Team Riverton/21

Hydrologic Outlook

Hydrologic Outlook
National Weather Service Grand Junction CO
233 PM MDT Sat May 30 2020

...Rivers and Streams in the Yampa Basin Will Increase to a
Second Peak This Weekend into Early Next Week due to Snowmelt...

...Expect Increased Flows on the Green River Below Flaming Gorge
Reservoir Due to Releases...

Flows in area rivers, streams, and creeks will continue to run at
elevated levels as the recent snowmelt works downstream.
Significant flooding is NOT forecast at this time as many
waterways peak for a second time early next week. Many streams
and creeks will run at bankfull conditions through the middle of
the week causing localized lowland flooding.

Anyone planning to recreate on area waterways should maintain
awareness and use an abundance of caution in or near the water.

Areas that will need to be watched closely include: The Yampa
River, Elk River, and other small streams in the upper Yampa

Flaming Gorge Reservoir will decrease releases to 7,600 cfs and
remain at this level until further notice.


U.S. Dept. of Commerce
NOAA National Weather Service
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Silver Spring, MD 20910
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