National Weather Service Advanced Hydrologic Prediction Service

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This probabilistic forecast is issued by the Northwest River Forecast Center.

	Hydrograph			River at a Glance			Download			Probability Information Weekly Chance of Exceeding Levels Chance of Exceeding Levels During Entire Period Short-term Probabilistic Guidance (Experimental)

About this graph

Forecasts for the Yaak River near Troy are issued routinely year-round.

Return to Area Map

Zoom Level:16

Flood Categories (in feet)

Major Flood Stage:	10
Moderate Flood Stage:	9
Flood Stage:	8
Action Stage:	7.5
Low Stage (in feet):	-9999

Historic Crests
(1) 11.40 ft on 05/20/1954
(2) 11.10 ft on 05/27/1948
(3) 9.70 ft on 05/21/1956
(4) 9.58 ft on 05/17/1997
(5) 9.07 ft on 05/22/1967
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 7.63 ft on 05/07/2017
(2) 7.90 ft on 03/16/2015
(3) 7.94 ft on 05/14/2013
(4) 8.52 ft on 04/27/2012
(5) 8.23 ft on 05/16/2011
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 2.70 ft on 12/09/1972

	Gauge Location	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

If you notice any errors in the below information, please contact our Webmaster
8.5	Flooding affects low lying areas adjacent to the river including homes and access roads. Sylvanite Ranger Station Road and Upper Ford Road affected by flooding.
8	Flooding affects low lying areas adjacent to the river.

Other Real-time and/or Archive Data Sources:

U.S. Geological Survey (USGS) Data and Site Info for Troy

Collaborative Agencies

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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