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Hydrograph River at a Glance Download
Portneuf River at Topaz Stage (ft)Flow (cfs)Observed: 2.87 ft at 6:15AM Dec 01, 2023Observed: 2.88 ft at 6:30AM Dec 01, 2023Observed: 2.87 ft at 6:45AM Dec 01, 2023Observed: 2.87 ft at 7:00AM Dec 01, 2023Observed: 2.88 ft at 7:15AM Dec 01, 2023Observed: 2.88 ft at 7:30AM Dec 01, 2023Observed: 2.88 ft at 7:45AM Dec 01, 2023Observed: 2.89 ft at 8:00AM Dec 01, 2023Observed: 2.9 ft at 8:15AM Dec 01, 2023Observed: 2.9 ft at 8:30AM Dec 01, 2023Observed: 2.9 ft at 8:45AM Dec 01, 2023Observed: 2.9 ft at 9:00AM Dec 01, 2023Observed: 2.9 ft at 9:15AM Dec 01, 2023Observed: 2.88 ft at 9:30AM Dec 01, 2023Observed: 2.88 ft at 9:45AM Dec 01, 2023Observed: 2.88 ft at 10:00AM Dec 01, 2023Observed: 2.88 ft at 10:15AM Dec 01, 2023Observed: 2.88 ft at 10:30AM Dec 01, 2023Observed: 2.88 ft at 10:45AM Dec 01, 2023Observed: 2.88 ft at 11:00AM Dec 01, 2023Observed: 2.89 ft at 11:15AM Dec 01, 2023Observed: 2.89 ft at 11:30AM Dec 01, 2023Observed: 2.89 ft at 11:45AM Dec 01, 2023Observed: 2.89 ft at 12:00PM Dec 01, 2023Observed: 2.9 ft at 12:15PM Dec 01, 2023Observed: 2.9 ft at 12:30PM Dec 01, 2023Observed: 2.89 ft at 12:45PM Dec 01, 2023Observed: 2.9 ft at 1:00PM Dec 01, 2023Observed: 2.9 ft at 1:15PM Dec 01, 2023Observed: 2.9 ft at 1:30PM Dec 01, 2023Observed: 2.9 ft at 1:45PM Dec 01, 2023Observed: 2.9 ft at 2:00PM Dec 01, 2023Observed: 2.9 ft at 2:15PM Dec 01, 2023Observed: 2.9 ft at 2:30PM Dec 01, 2023Observed: 2.89 ft at 2:45PM Dec 01, 2023Observed: 2.89 ft at 3:00PM Dec 01, 2023Observed: 2.89 ft at 3:15PM Dec 01, 2023Observed: 2.89 ft at 3:30PM Dec 01, 2023Observed: 2.89 ft at 3:45PM Dec 01, 2023Observed: 2.89 ft at 4:00PM Dec 01, 2023Observed: 2.89 ft at 4:15PM Dec 01, 2023Observed: 2.89 ft at 4:30PM Dec 01, 2023Observed: 2.89 ft at 4:45PM Dec 01, 2023Observed: 2.89 ft at 5:00PM Dec 01, 2023Observed: 2.89 ft at 5:15PM Dec 01, 2023Observed: 2.89 ft at 5:30PM Dec 01, 2023Observed: 2.88 ft at 5:45PM Dec 01, 2023Observed: 2.88 ft at 6:00PM Dec 01, 2023Observed: 2.88 ft at 6:15PM Dec 01, 2023Observed: 2.87 ft at 6:30PM Dec 01, 2023Observed: 2.86 ft at 6:45PM Dec 01, 2023Observed: 2.86 ft at 7:00PM Dec 01, 2023Observed: 2.87 ft at 7:15PM Dec 01, 2023Observed: 2.87 ft at 7:30PM Dec 01, 2023Observed: 2.87 ft at 7:45PM Dec 01, 2023Observed: 2.87 ft at 8:00PM Dec 01, 2023Observed: 2.87 ft at 8:15PM Dec 01, 2023Observed: 2.87 ft at 8:30PM Dec 01, 2023Observed: 2.87 ft at 8:45PM Dec 01, 2023Observed: 2.88 ft at 9:00PM Dec 01, 2023Observed: 2.87 ft at 9:15PM Dec 01, 2023Observed: 2.87 ft at 9:30PM Dec 01, 2023Observed: 2.87 ft at 9:45PM Dec 01, 2023Observed: 2.87 ft at 10:00PM Dec 01, 2023Observed: 2.87 ft at 10:15PM Dec 01, 2023Observed: 2.87 ft at 10:30PM Dec 01, 2023Observed: 2.87 ft at 10:45PM Dec 01, 2023Observed: 2.88 ft at 11:00PM Dec 01, 2023Observed: 2.88 ft at 11:15PM Dec 01, 2023Observed: 2.88 ft at 11:30PM Dec 01, 2023Observed: 2.88 ft at 11:45PM Dec 01, 2023Observed: 2.88 ft at 12:00AM Dec 02, 2023Observed: 2.88 ft at 12:15AM Dec 02, 2023Observed: 2.88 ft at 12:30AM Dec 02, 2023Observed: 2.88 ft at 12:45AM Dec 02, 2023Observed: 2.88 ft at 1:00AM Dec 02, 2023Observed: 2.88 ft at 1:15AM Dec 02, 2023Observed: 2.88 ft at 1:30AM Dec 02, 2023Observed: 2.88 ft at 1:45AM Dec 02, 2023Observed: 2.88 ft at 2:00AM Dec 02, 2023Observed: 2.88 ft at 2:15AM Dec 02, 2023Observed: 2.89 ft at 2:30AM Dec 02, 2023Observed: 2.89 ft at 2:45AM Dec 02, 2023Observed: 2.89 ft at 3:00AM Dec 02, 2023Observed: 2.89 ft at 3:15AM Dec 02, 2023Observed: 2.89 ft at 3:30AM Dec 02, 2023Observed: 2.89 ft at 3:45AM Dec 02, 2023Observed: 2.89 ft at 4:00AM Dec 02, 2023Observed: 2.89 ft at 4:15AM Dec 02, 2023Observed: 2.89 ft at 4:30AM Dec 02, 2023Observed: 2.89 ft at 4:45AM Dec 02, 2023Observed: 2.89 ft at 5:00AM Dec 02, 2023Observed: 2.89 ft at 5:15AM Dec 02, 2023Observed: 2.9 ft at 5:30AM Dec 02, 2023Observed: 2.9 ft at 5:45AM Dec 02, 2023Observed: 2.89 ft at 6:00AM Dec 02, 2023Observed: 2.9 ft at 6:15AM Dec 02, 2023Observed: 2.89 ft at 6:30AM Dec 02, 2023Observed: 2.89 ft at 6:45AM Dec 02, 2023Observed: 2.89 ft at 7:00AM Dec 02, 2023Observed: 2.89 ft at 7:15AM Dec 02, 2023Observed: 2.89 ft at 7:30AM Dec 02, 2023Observed: 2.89 ft at 7:45AM Dec 02, 2023Observed: 2.89 ft at 8:00AM Dec 02, 2023Observed: 2.89 ft at 8:15AM Dec 02, 2023Observed: 2.89 ft at 8:30AM Dec 02, 2023Observed: 2.9 ft at 8:45AM Dec 02, 2023Observed: 2.9 ft at 9:00AM Dec 02, 2023Observed: 2.9 ft at 9:15AM Dec 02, 2023Observed: 2.9 ft at 9:30AM Dec 02, 2023Observed: 2.9 ft at 9:45AM Dec 02, 2023Observed: 2.9 ft at 10:00AM Dec 02, 2023Observed: 2.9 ft at 10:15AM Dec 02, 2023Observed: 2.9 ft at 10:30AM Dec 02, 2023Observed: 2.89 ft at 10:45AM Dec 02, 2023Observed: 2.89 ft at 11:00AM Dec 02, 2023Observed: 2.89 ft at 11:15AM Dec 02, 2023Observed: 2.89 ft at 11:30AM Dec 02, 2023Observed: 2.88 ft at 11:45AM Dec 02, 2023Observed: 2.89 ft at 12:00PM Dec 02, 2023Observed: 2.88 ft at 12:15PM Dec 02, 2023Observed: 2.88 ft at 12:30PM Dec 02, 2023Observed: 2.89 ft at 12:45PM Dec 02, 2023Observed: 2.88 ft at 1:00PM Dec 02, 2023Observed: 2.88 ft at 1:15PM Dec 02, 2023Observed: 2.88 ft at 1:30PM Dec 02, 2023Observed: 2.88 ft at 1:45PM Dec 02, 2023Observed: 2.89 ft at 2:00PM Dec 02, 2023Observed: 2.88 ft at 2:15PM Dec 02, 2023Observed: 2.88 ft at 2:30PM Dec 02, 2023Observed: 2.88 ft at 2:45PM Dec 02, 2023Observed: 2.88 ft at 3:00PM Dec 02, 2023Observed: 2.87 ft at 3:15PM Dec 02, 2023Observed: 2.87 ft at 3:30PM Dec 02, 2023Observed: 2.88 ft at 3:45PM Dec 02, 2023Observed: 2.88 ft at 4:00PM Dec 02, 2023Observed: 2.88 ft at 4:15PM Dec 02, 2023Observed: 2.88 ft at 4:30PM Dec 02, 2023Observed: 2.88 ft at 4:45PM Dec 02, 2023Observed: 2.88 ft at 5:00PM Dec 02, 2023Observed: 2.89 ft at 5:15PM Dec 02, 2023Observed: 2.89 ft at 5:30PM Dec 02, 2023Observed: 2.88 ft at 5:45PM Dec 02, 2023Observed: 2.88 ft at 6:00PM Dec 02, 2023Observed: 2.88 ft at 6:15PM Dec 02, 2023Observed: 2.87 ft at 6:30PM Dec 02, 2023Observed: 2.87 ft at 6:45PM Dec 02, 2023Observed: 2.87 ft at 7:00PM Dec 02, 2023Observed: 2.88 ft at 7:15PM Dec 02, 2023Observed: 2.87 ft at 7:30PM Dec 02, 2023Observed: 2.88 ft at 7:45PM Dec 02, 2023Observed: 2.88 ft at 8:00PM Dec 02, 2023Observed: 2.89 ft at 8:15PM Dec 02, 2023Observed: 2.89 ft at 8:30PM Dec 02, 2023Observed: 2.9 ft at 8:45PM Dec 02, 2023Observed: 2.91 ft at 9:00PM Dec 02, 2023Observed: 2.92 ft at 9:15PM Dec 02, 2023Observed: 2.92 ft at 9:30PM Dec 02, 2023Observed: 2.91 ft at 9:45PM Dec 02, 2023Observed: 2.92 ft at 10:00PM Dec 02, 2023Observed: 2.91 ft at 10:15PM Dec 02, 2023Observed: 2.91 ft at 10:30PM Dec 02, 2023Observed: 2.91 ft at 10:45PM Dec 02, 2023Observed: 2.91 ft at 11:00PM Dec 02, 2023Observed: 2.91 ft at 11:15PM Dec 02, 2023Observed: 2.91 ft at 11:30PM Dec 02, 2023Observed: 2.91 ft at 11:45PM Dec 02, 2023Observed: 2.91 ft at 12:00AM Dec 03, 2023Observed: 2.91 ft at 12:15AM Dec 03, 2023Observed: 2.91 ft at 12:30AM Dec 03, 2023Observed: 2.91 ft at 12:45AM Dec 03, 2023Observed: 2.91 ft at 1:00AM Dec 03, 2023Observed: 2.91 ft at 1:15AM Dec 03, 2023Observed: 2.91 ft at 1:30AM Dec 03, 2023Observed: 2.92 ft at 1:45AM Dec 03, 2023Observed: 2.91 ft at 2:00AM Dec 03, 2023Observed: 2.91 ft at 2:15AM Dec 03, 2023Observed: 2.91 ft at 2:30AM Dec 03, 2023Observed: 2.91 ft at 2:45AM Dec 03, 2023Observed: 2.91 ft at 3:00AM Dec 03, 2023Observed: 2.91 ft at 3:15AM Dec 03, 2023Observed: 2.91 ft at 3:30AM Dec 03, 2023Observed: 2.91 ft at 3:45AM Dec 03, 2023Observed: 2.91 ft at 4:00AM Dec 03, 2023Observed: 2.91 ft at 4:15AM Dec 03, 2023Observed: 2.9 ft at 4:30AM Dec 03, 2023Observed: 2.9 ft at 4:45AM Dec 03, 2023Observed: 2.9 ft at 5:00AM Dec 03, 2023Observed: 2.9 ft at 5:15AM Dec 03, 2023Observed: 2.9 ft at 5:30AM Dec 03, 2023Observed: 2.89 ft at 5:45AM Dec 03, 2023Observed: 2.89 ft at 6:00AM Dec 03, 2023Observed: 2.89 ft at 6:15AM Dec 03, 2023Observed: 2.89 ft at 6:30AM Dec 03, 2023Observed: 2.89 ft at 6:45AM Dec 03, 2023Observed: 2.89 ft at 7:00AM Dec 03, 2023Observed: 2.89 ft at 7:15AM Dec 03, 2023Observed: 2.89 ft at 7:30AM Dec 03, 2023Observed: 2.88 ft at 7:45AM Dec 03, 2023Observed: 2.88 ft at 8:00AM Dec 03, 2023Observed: 2.87 ft at 8:15AM Dec 03, 2023Observed: 2.87 ft at 8:30AM Dec 03, 2023Observed: 2.87 ft at 8:45AM Dec 03, 2023Observed: 2.87 ft at 9:00AM Dec 03, 2023Observed: 2.88 ft at 9:15AM Dec 03, 2023Observed: 2.88 ft at 9:30AM Dec 03, 2023Observed: 2.88 ft at 9:45AM Dec 03, 2023Observed: 2.88 ft at 10:00AM Dec 03, 2023Observed: 2.88 ft at 10:15AM Dec 03, 2023Observed: 2.88 ft at 10:30AM Dec 03, 2023Observed: 2.88 ft at 10:45AM Dec 03, 2023Observed: 2.88 ft at 11:00AM Dec 03, 2023Observed: 2.88 ft at 11:15AM Dec 03, 2023Observed: 2.89 ft at 11:30AM Dec 03, 2023Observed: 2.88 ft at 11:45AM Dec 03, 2023Observed: 2.89 ft at 12:00PM Dec 03, 2023Observed: 2.89 ft at 12:15PM Dec 03, 2023Observed: 2.89 ft at 12:30PM Dec 03, 2023Observed: 2.89 ft at 12:45PM Dec 03, 2023Observed: 2.89 ft at 1:00PM Dec 03, 2023Observed: 2.89 ft at 1:15PM Dec 03, 2023Observed: 2.9 ft at 1:30PM Dec 03, 2023Observed: 2.9 ft at 1:45PM Dec 03, 2023Observed: 2.9 ft at 2:00PM Dec 03, 2023Observed: 2.89 ft at 2:15PM Dec 03, 2023Observed: 2.9 ft at 3:30PM Dec 03, 2023Observed: 2.9 ft at 3:45PM Dec 03, 2023Observed: 2.9 ft at 4:00PM Dec 03, 2023Observed: 2.9 ft at 4:15PM Dec 03, 2023Observed: 2.89 ft at 4:30PM Dec 03, 2023Observed: 2.9 ft at 4:45PM Dec 03, 2023Observed: 2.9 ft at 5:00PM Dec 03, 2023Observed: 2.9 ft at 5:15PM Dec 03, 2023Observed: 2.9 ft at 5:30PM Dec 03, 2023Observed: 2.9 ft at 5:45PM Dec 03, 2023Observed: 2.91 ft at 6:00PM Dec 03, 2023Observed: 2.91 ft at 6:15PM Dec 03, 2023Observed: 2.91 ft at 6:30PM Dec 03, 2023Observed: 2.91 ft at 6:45PM Dec 03, 2023Observed: 2.91 ft at 7:00PM Dec 03, 2023Observed: 2.92 ft at 7:15PM Dec 03, 2023Observed: 2.92 ft at 7:30PM Dec 03, 2023Observed: 2.92 ft at 7:45PM Dec 03, 2023Observed: 2.92 ft at 8:00PM Dec 03, 2023Observed: 2.92 ft at 8:15PM Dec 03, 2023Observed: 2.91 ft at 8:30PM Dec 03, 2023Observed: 2.92 ft at 8:45PM Dec 03, 2023Observed: 2.92 ft at 9:00PM Dec 03, 2023Observed: 2.92 ft at 9:15PM Dec 03, 2023Observed: 2.93 ft at 9:30PM Dec 03, 2023Observed: 2.93 ft at 9:45PM Dec 03, 2023Observed: 2.94 ft at 10:00PM Dec 03, 2023Observed: 2.94 ft at 10:15PM Dec 03, 2023Observed: 2.94 ft at 10:30PM Dec 03, 2023Observed: 2.94 ft at 10:45PM Dec 03, 2023Observed: 2.93 ft at 11:00PM Dec 03, 2023Observed: 2.93 ft at 11:15PM Dec 03, 2023Observed: 2.92 ft at 11:30PM Dec 03, 2023Observed: 2.93 ft at 11:45PM Dec 03, 2023Observed: 2.93 ft at 12:00AM Dec 04, 2023Observed: 2.93 ft at 12:15AM Dec 04, 2023Observed: 2.94 ft at 12:30AM Dec 04, 2023Observed: 2.94 ft at 12:45AM Dec 04, 2023Observed: 2.95 ft at 1:00AM Dec 04, 2023Observed: 2.95 ft at 1:15AM Dec 04, 2023Highest Observation: 2.96 ft at 1:30AM Dec 04, 2023Observed: 2.95 ft at 1:45AM Dec 04, 2023Observed: 2.95 ft at 2:00AM Dec 04, 2023Observed: 2.95 ft at 2:15AM Dec 04, 2023Observed: 2.95 ft at 2:30AM Dec 04, 2023Observed: 2.94 ft at 2:45AM Dec 04, 2023Observed: 2.94 ft at 3:00AM Dec 04, 2023Observed: 2.94 ft at 3:15AM Dec 04, 2023Observed: 2.94 ft at 3:30AM Dec 04, 2023Observed: 2.93 ft at 3:45AM Dec 04, 2023Observed: 2.93 ft at 4:00AM Dec 04, 2023Observed: 2.93 ft at 4:15AM Dec 04, 2023Observed: 2.93 ft at 4:30AM Dec 04, 2023Observed: 2.92 ft at 4:45AM Dec 04, 2023Observed: 2.92 ft at 5:00AM Dec 04, 2023Observed: 2.92 ft at 5:15AM Dec 04, 2023Highest Forecast: 2.83 ft 11:00AM Dec 04, 2023Forecast: 2.82 ft 5:00PM Dec 04, 2023Forecast: 2.8 ft 11:00PM Dec 04, 2023Forecast: 2.79 ft 5:00AM Dec 05, 2023Forecast: 2.78 ft 11:00AM Dec 05, 2023Forecast: 2.76 ft 5:00PM Dec 05, 2023Forecast: 2.75 ft 11:00PM Dec 05, 2023Forecast: 2.74 ft 5:00AM Dec 06, 2023Forecast: 2.73 ft 11:00AM Dec 06, 2023Forecast: 2.71 ft 5:00PM Dec 06, 2023Forecast: 2.7 ft 11:00PM Dec 06, 2023Forecast: 2.68 ft 5:00AM Dec 07, 2023Forecast: 2.67 ft 11:00AM Dec 07, 2023Forecast: 2.66 ft 5:00PM Dec 07, 2023Forecast: 2.64 ft 11:00PM Dec 07, 2023Forecast: 2.63 ft 5:00AM Dec 08, 2023Forecast: 2.61 ft 11:00AM Dec 08, 2023Forecast: 2.6 ft 5:00PM Dec 08, 2023Forecast: 2.58 ft 11:00PM Dec 08, 2023Forecast: 2.58 ft 5:00AM Dec 09, 2023Forecast: 2.58 ft 11:00AM Dec 09, 2023Forecast: 2.58 ft 5:00PM Dec 09, 2023Forecast: 2.58 ft 11:00PM Dec 09, 2023Forecast: 2.58 ft 5:00AM Dec 10, 2023Forecast: 2.58 ft 11:00AM Dec 10, 2023Forecast: 2.58 ft 5:00PM Dec 10, 2023Forecast: 2.58 ft 11:00PM Dec 10, 2023Forecast: 2.58 ft 5:00AM Dec 11, 2023USGS--Water Resources of the United StatesTOPI1(plotting HGIRG) Graph Created (6:03AM Dec 4, 2023)ObservedForecast (issued 4:53PM Dec 3)Latest observed value: 2.92 ft at 5:15 AM MST 4-Dec-2023. Flood Stage is 4 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (MST)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Stage may be affected by ice during winter months.

NOTE: Forecasts are not available for the Portneuf River at Topaz. Only observed stages are available for this point.

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Downstream Gauge Downstream Gauge - at Pocatello
Flood Categories (in feet)
Major Flood Stage: 0
Moderate Flood Stage: 0
Flood Stage: 4
Action Stage: 3.5
Low Stage (in feet): -9999

Historic Crests
(1) 6.00 ft on 12/23/1964
(2) 5.71 ft on 02/25/1957
(3) 5.59 ft on 02/20/1980
(4) 5.56 ft on 01/22/1969
(5) 5.42 ft on 05/21/1984
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 3.11 ft on 05/08/2022
(2) 3.28 ft on 06/07/2021
(3) 3.44 ft on 05/03/2020
(4) 3.72 ft on 06/02/2019
(5) 4.92 ft on 03/23/2018
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 2.10 ft on 09/25/1994

For more information on your flood risk go to www.floodsmart.gov.
Zoom Level:16
KML Image
Gauge LocationGauge Map Marker
 Disclaimer
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
4.02 Lowland and crop field flooding possible from Pebble Creek to Inkom.
3.5 Near bankfull from Pebble Creek Road downstream to Inkom. Isolated ponding in flat areas near Symons Road.
About This Location Collapse

Latitude: 42.625106° N, Longitude: 112.087961° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 4 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)		 Elevation
(gauge height = flood stage)		 Elevation information source
NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other 4918 ft 4819 ft  

Current/Historical Observations:
Additional Information Collapse
Historical Peak Flows     (Scroll to Streamflow Statistics for more years)
USGS Historical Peak Flows Explanation
Graphical View of Historical Peak Flows and Gage Analysis 

25   Year Peak Flood 1610 CFS or 5.53 ft
50   Year Peak Flood 2100 CFS
100 Year Peak Flood 2730 CFS
200 Year Peak Flood 3510 CFS
500 Year Peak Flood 4860 CFS

Resources Collapse
Hydrologic Resources Additional Resources
Collaborative Agencies Collapse
The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
National Weather Service
Pocatello Weather Forecast Office
1945 Beechcraft Ave
Pocatello, ID 83204
(208) 232-9306
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