Station Name: Sun River at Simms MT
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 3,550 feet

Nearest Address:
99 Simms Fairfield Rd
Simms, MT 59477
Cascade County

GPS Coordinates: 47.50162778, -111.9319139

Nearby Water Temperatures

Flood Watch issued May 31 at 2:14AM MDT until June 1 at 6:00PM MDT by NWS Great Falls MT

Effective: Sun May 31, 2026, 2:14 AM
Expires: Sun May 31, 2026, 6:00 PM

* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of central and north central Montana, including the following areas, in central Montana, Gates of the Mountains. In north central Montana, Cascade County below 5000ft, East Glacier Park Region, Eastern Glacier, Western Toole, and Central Pondera, Eastern Pondera and Eastern Teton, Northern High Plains, Southern High Plains and Southern Rocky Mountain Front. * WHEN...Through Monday afternoon. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Isolated areas of heavy rainfall could result in flooding. - http://www.weather.gov/safety/flood

You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.

Flood Advisory issued May 31 at 10:49AM MDT until June 1 at 12:00AM MDT by NWS Great Falls MT

Effective: Sun May 31, 2026, 10:49 AM
Expires: Mon June 1, 2026, 12:00 AM

* WHAT...Minor flooding in areas of poor drainage and elevated streamflows are expected. * WHERE...Portions of central, north central, and west central Montana, including the following counties, in central Montana, Cascade. In north central Montana, Glacier, Pondera, Teton and Toole. In west central Montana, Lewis and Clark. * WHEN...Until midnight MDT tonight. * IMPACTS...Minor flooding in urban and rural areas of poor drainage. Some river and stream levels are elevated and will see additional rises to around bankful. * ADDITIONAL DETAILS... - At 1022 AM MDT, Moderate to heavy rainfall accumulations of 1 to 2 inches have occurred across the advisory area over the last 24 hours, leading to elevated flow on some creeks and rivers and ponding of water in areas with poor drainage. - Additional rainfall amounts of 0.2 to 0.5 inches are expected at lower elevations through this evening with up to 1 inch of additional rainfall across areas near GLacier National Park and the Little Belt and Highwood Mountains. - Some locations that may experience minor flooding from elevated stream flow include... Some creeks originating in the Highwood and Little Belt Mountains. The Marias and St. Mary Rivers and tributaries in Glacier county including Badger Creek, Two-medicine River and Cut Bank Creek. - Additionally, the Sun river will remain at elevated levels and is forecast to remain just under bankful through Monday. - http://www.weather.gov/safety/flood

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Please report observed flooding to local emergency services or law enforcement and request they pass this information to the National Weather Service when you can do so safely.