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Advanced Hydrologic Prediction Service
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This probabilistic forecast is issued by the Northwest River Forecast Center.
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About this graph
Forecasts for the Clark Fork River below Missoula are issued routinely year-round.
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Upstream Gauge - above Missoula Upstream Gauge Downstream Gauge Downstream Gauge - at St. Regis
Zoom Level:16
Flood Categories (in feet)
Major Flood Stage: 13
Moderate Flood Stage: 12
Flood Stage: 11
Action Stage: 10.5
Low Stage (in feet): -9999

Historic Crests
(1) 12.14 ft on 05/11/2018
(2) 12.10 ft on 05/18/1997
(3) 12.08 ft on 05/23/1948
(4) 11.71 ft on 06/03/1972
(5) 11.67 ft on 06/21/1975
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(P): Preliminary values subject to further review.

Recent Crests
(1) 12.14 ft on 05/11/2018
(2) 11.33 ft on 06/09/2011
(3) 10.24 ft on 06/01/2003
(4) 12.10 ft on 05/18/1997
(5) 10.11 ft on 06/10/1996
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 0.30 ft on 01/16/1954
(2) 0.30 ft on 03/24/1964
(3) 0.58 ft on 01/18/1933
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Gauge LocationGauge Map Marker
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
13 Flooding to low lying areas adjacent to the river is likely. Flood prone areas include Target Range and the Orchard Homes neighborhoods.
11.5 Numerous homes along the west end of Harpers Road are surrounded with surface water and ground water. Harpers Road adjacent to the Clark Fork River is flooded and impassable. Flood waters are also threatening Malards Way.
11 Flooding of low lying areas adjacent to the river is possible just west of Missoula to Frenchtown.

Other Real-time and/or Archive Data Sources:

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
Missoula Weather Forecast Office
6633 Aviation Way
Missoula, MT 59808
(406) 329-4840
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Page last modified: 2-Nov-2020 7:28 PM
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