Minor Flood
4.02 ft
Current Water Level
Gage Height
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Streamflow
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Last Reading
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FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Action Stage
3.5 ft
What Floods at Each Level
4.02 ft
Lowland and crop field flooding possible from Pebble Creek to Inkom.
3.5 ft
Near bankfull from Pebble Creek Road downstream to Inkom. Isolated ponding in flat areas near Symons Road.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Dec 22, 1964 | 6 ft | 1,740 cfs |
| Feb 24, 1957 | 5.71 ft | 1,040 cfs |
| Feb 19, 1980 | 5.59 ft | 1,150 cfs |
About This Gauge
USGS Site
NWS LID
TOPI1
River
Portneuf River
County
Bannock, ID
Coordinates
42.6251°N, 112.0880°W
Get Flood Alerts for Portneuf 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 Portneuf River at Topaz?
The Portneuf River at Topaz gauge is maintained by USGS (site 13073000) 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 Portneuf River at Topaz?
The NWS-defined flood stage for Portneuf River at Topaz is 4.02 feet. Action stage begins at 3.5 feet. Moderate flooding starts at N/A feet, and major flooding at N/A feet.
How do I get alerts when Portneuf River rises?
Download StormCast free on Google Play, go to River Gauges, and add Portneuf River at Topaz to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category.
Where is the Portneuf River at Topaz gauge located?
The gauge is located in Bannock County, Idaho at coordinates 42.6251°N, 112.0880°W. USGS site number: 13073000. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Gauges on Portneuf River
On This River
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Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey
- Stage may be affected by ice during winter months.