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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 Similkameen River near Nighthawk are issued routinely year-round.
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Zoom Level:12
Flood Categories (in feet)
Major Flood Stage: 16
Moderate Flood Stage: 15
Flood Stage: 14
Action Stage: 13
Low Stage (in feet): 0

Historic Crests
(1) 17.97 ft on 06/01/1972
(2) 17.62 ft on 05/30/1948
(3) 15.52 ft on 06/17/1974
(4) 15.47 ft on 06/17/1950
(5) 15.13 ft on 06/13/1955
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(P): Preliminary values subject to further review.

Recent Crests
(1) 13.06 ft on 05/13/2013 (P)
(2) 11.10 ft on 05/17/2012
(3) 13.02 ft on 06/10/2011
(4) 10.24 ft on 06/03/2010
(5) 9.89 ft on 05/31/2009
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
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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
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18 Water will be into homes and trailers that are in the low areas close to the river. Some homes on Palmer Lake may experience flooding. This is equivalent to the 1972 flood.
13 The Similkameen River will begin to back up into Palmer Lake and water will be a few inches deep over Chopaka Road. Low-lying pastures and agricultural land around Chopaka and Allemandi Roads will be flooded. Water will begin to encroach on farm land just downstream of the Nighthawk bridge.
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400 cfs Minimum base flow for September 1st and 15th, January 1st and 15th, & February 1st and 15th at this river gage, which is the lowest base flow of the year. The affected stream reach is from the confluence of the Okanogan River to the Canadian Border. Water-rights junior to the base flows established in the rule may be restricted if streamflow drops below this value. For more information on this and the minimum base flows for other times in the year and for other reaches, refer to Washington Administrative Code (WAC) Chapter 173-549.

Other Real-time and/or Archive Data Sources:

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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
Spokane Weather Forecast Office
2601 N. Rambo Rd.
Spokane, WA 99224
(509) 244-0110
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Page last modified: 21-Dec-2016 10:35 PM
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