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Hydrograph River at a Glance Download
Powder River (WY-MT) at Sussex Stage (ft)Flow (kcfs)USGS--Water Resources of the United StatesSXXW4(plotting HGIRG) Graph Created (1:49AM Feb 23, 2019)Flood Stage is 11 ft
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Datum: Not Available
NOTE: Gauge readings currently unavailable.

Reliability of the Forecast: Based on current and forecast river, weather and reservoir conditions

NOTE: Forecasts for the Powder River (WY-MT) at Sussex are issued routinely during the warm season, and as needed at other times of the year.

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Upstream Gauge - near Kaycee Upstream Gauge Downstream Gauge Downstream Gauge - near Arvada
Flood Categories (in feet)
Major Flood Stage: 13
Moderate Flood Stage: 12
Flood Stage: 11
Action Stage: 10
Low Stage (in feet): -9999

Historic Crests
(1) 15.67 ft on 05/25/2015
(2) 15.16 ft on 05/19/1978
(3) 12.60 ft on 05/23/1952
(4) 11.98 ft on 05/09/1995
(5) 11.64 ft on 05/25/2008
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(P): Preliminary values subject to further review.

Recent Crests
(1) 4.16 ft on 04/30/2018 (P)
(2) 5.17 ft on 06/13/2017
(3) 6.56 ft on 04/30/2017
(4) 7.63 ft on 04/25/2016
(5) 9.55 ft on 06/04/2015
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(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

For more information on your flood risk go to

Zoom Level:14
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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.
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If you notice any errors in the below information, please contact our Webmaster
16.5 Water at base of Highway 192 Bridge.
15.67 Record stage---(5/25/2015).
12.6 Record flow---32,500 cfs (5/23/1952).
12 Water along low spots of Highway 192 along right and left banks. Widespread flooding of agricultural land along right bank.
11 Flood stage. Minor flooding of agricultural land along right bank.
10 Bankfull stage.
(1) Looking Upstream---Moderate Flow
(2) Looking Downstream---Moderate Flow
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Latitude: 43.697200° N, Longitude: 106.306100° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 11 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
(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 4365.28 ft 4376.28 ft Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  

Current/Historical Observations:

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USGS Water Temperature and/or Water Quality data---please use USGS link above
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Hydrologic Resources Additional Resources
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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
Riverton Weather Forecast Office
12744 West U.S. Highway 26
Riverton, WY 82501
(307) 857-3898
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Page last modified: 21-Dec-2016 10:36 PM
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