Sun River above Augusta
Montana — Water Level & Flood Stage
Located in Lewis and Clark County, Montana on the Sun River. Live water level data from USGS, updated every 15 minutes.
Current Water Level
Gage Height
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Streamflow
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Last Reading
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This is an NWS forecast point (LID: AGSM8). Live data may be limited. View on NWS AHPS →
Flood Stages
Action Stage
4724 ft
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
What Floods at Each Level
4724 ft
At 4724 Feet...The reservoir is full and becomes a pass-through reservoir.
4712 ft
At 4712 Feet...At the discreation of the reservoir operators, additional water can be released through the Glory Hole spillway release system.
4690 ft
Boat ramp available.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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About This Gauge
NWS LID
AGSM8
River
Sun River
County
Lewis and Clark, MT
Coordinates
47.6017°N, 112.7536°W
Get Flood Alerts for Sun River
StormCast monitors this gauge and sends a push notification to your phone when the water level crosses into a new flood category — even at 3 AM.
Frequently Asked Questions
What is the current water level of Sun River above Augusta?
The Sun River above Augusta gauge is maintained by USGS and reports water levels every 15 minutes. Visit this page to see the latest reading updated live, or download StormCast to get push alerts when levels rise.
What is flood stage for Sun River above Augusta?
This gauge has NWS-defined flood categories. Check the flood stages section above for current thresholds.
How do I get alerts when Sun River rises?
Download StormCast free on Google Play, go to River Gauges, and add Sun River above Augusta to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category — even when your screen is off.
Where is the Sun River above Augusta gauge located?
The gauge is located in Lewis and Clark County, Montana at coordinates 47.6017°N, 112.7536°W. Data is provided by the U.S. Geological Survey and the National Weather Service.