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Hydrologic Outlook
National Weather Service Billings MT
144 AM MDT Sat May 23 2026

...Snowmelt Will Bring Higher Stream Flows...

Unseasonably warm temperatures this weekend into early next week will
result in higher flows on area waterways through next week as the
remaining high elevation snowpack melts. Flooding is not expected at
this time. Rivers such as the Yellowstone and Clarks Fork of the
Yellowstone, Stillwater, and Boulder are expected to see flows double
the current rates by late in the week.

Smaller streams and creeks flowing out of the mountains will see
rises late this weekend into early next week, with larger rivers and
streams further downstream seeing the strongest increases from
Tuesday through Friday.

Those with interests along foothills waterways should be prepared for
higher water levels, and move property and livestock away from
rivers, streams, and low lying areas.

Recreationists in the mountains and foothills should be prepared for
changing conditions and use extra caution when near waterways. Flows
will be higher and faster, and the water is very cold. Cloudy water
conditions during runoff can also hide submerged hazards. Keep
children and pets away from the edge of fast flowing waterways.

Stay tuned to the forecast. Please report any flooding to local law
enforcement and have them relay the report to the National Weather
Service.

$$