Similkameen River near Nighthawk

Last updated: Jul 3, 2025, 1:29 PM UTC

No watches, warnings or advisories are in effect for this area.

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IJC
CCT

Scale to Flood Categories

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Observed (OBS) 07/03/2025 5:30 AM PDT

Official Forecast (FCST) 07/02/2025 8:44 AM PDT

Low Threshold: 1 ft

CATEGORY STAGE

Major Flooding 16 ft

Moderate Flooding 15 ft

Minor Flooding 14 ft

Action 13 ft

Reliability of the Forecast:

NOTE: Forecasts are issued routinely year-round.
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	CATEGORY	STAGE
	Major Flooding	16 ft
	Moderate Flooding	15 ft
	Minor Flooding	14 ft
	Action	13 ft

Flood Impacts 🅘

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. Loomis-Oroville Road around Palmer lake and Chopaka Road near the intersection with Loomis-Oroville Rd will be impassable.
15 - Water will be around the foundation of the home on Allemandi Road south of the Nighthawk Bridge. Widespread flooding of agricultural land and private property along the river valley. Portions of Loomis-Oroville Road around Palmer Lake will be inundated between Toats Coulee and Chopaka Road. Chopaka Road will be flooded.
14.4 - Minor flooding to properties on the southwest side Oroville to near the Oroville Golf Course and in pasture lands near Split Rock and Miners Flat Campground off of Loomis-Oroville Road.

Gauge Info

Coordinates	48.9846, -119.618
RFC	NWRFC
State	WA
WFO	OTX
County	Okanogan
Data Provider(s)
International Joint Commission	IJC
Confederated Tribes of the Colville Reservation - Fish & Wildlife Department	CCT
US Geological Survey	USGS
USGS	12442500

Gauge Location

Recent Crests

1.	8.37 ft	on 05-17-2024	(P)
2.	11.17 ft	on 05-07-2023
3.	11.02 ft	on 06-06-2022
4.	14.38 ft	on 11-16-2021
5.	10.56 ft	on 05-18-2021

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.	15.50 ft	on 05-11-2018
5.	15.47 ft	on 06-17-1950

Low Water Records

1.	1.55 ft	on 01-31-1988
2.	1.65 ft	on 01-03-1974
3.	1.89 ft	on 12-22-2022

(P) - Preliminary values subject to further review
¹ - Gauge datum changed during this year

Vertical Datum Table

type	NGVD29
major Flooding	1154.00 ft
moderate Flooding	1153.00 ft
minor Flooding	1152.00 ft
action	1151.00 ft
Latest Value	1141.42 ft
Gauge Zero	1138.00 ft

Gauge Photos

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Probability Information

Photo 1 of 3

Weekly Chance of Exceeding Levels
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Chance of Exceeding Levels During Entire Period
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Short Range Forecast Uncertainty
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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.

Resources

Hydrologic Resource Links

Additional Resource Links

WFO Information

Weather Forecast Office

Spokane

2601 N. Rambo Rd.

Spokane, WA 99224

(509) 244-0110

Ask Questions/Webmaster

Official Homepage

1.	8.37 ft	on 05-17-2024	(P)
2.	11.17 ft	on 05-07-2023
3.	11.02 ft	on 06-06-2022
4.	14.38 ft	on 11-16-2021
5.	10.56 ft	on 05-18-2021
6.	12.81 ft	on 06-01-2020
7.	9.47 ft	on 05-11-2019
8.	14.82 ft	on 05-18-2018
9.	15.50 ft	on 05-11-2018
10.	12.46 ft	on 05-24-2017
11.	11.72 ft	on 04-23-2016
12.	8.26 ft	on 05-24-2015
13.	11.97 ft	on 05-18-2014
14.	13.06 ft	on 05-13-2013
15.	11.10 ft	on 05-17-2012
16.	13.02 ft	on 06-10-2011
17.	10.24 ft	on 06-03-2010
18.	9.89 ft	on 05-31-2009
19.	12.87 ft	on 05-20-2008
20.	10.59 ft	on 06-05-2007
21.	11.59 ft	on 05-21-2006
22.	7.10 ft	on 04-27-2005
23.	10.14 ft	on 10-21-2003
24.	9.38 ft	on 05-31-2003
25.	12.23 ft	on 05-30-2002
26.	8.66 ft	on 05-24-2001
27.	9.13 ft	on 05-22-2000
28.	12.48 ft	on 06-17-1999
29.	11.23 ft	on 05-07-1998
30.	14.59 ft	on 05-17-1997
31.	12.10 ft	on 06-08-1996
32.	10.76 ft	on 05-31-1995
33.	9.09 ft	on 05-12-1994
34.	10.97 ft	on 05-15-1993
35.	8.67 ft	on 05-07-1992
36.	14.25 ft	on 05-22-1991
37.	10.69 ft	on 06-01-1990
38.	10.23 ft	on 06-03-1989
39.	10.67 ft	on 05-13-1988
40.	11.52 ft	on 05-13-1987
41.	13.72 ft	on 06-01-1986
42.	11.29 ft	on 05-24-1985
43.	11.26 ft	on 06-16-1984
44.	12.91 ft	on 05-31-1983
45.	11.76 ft	on 06-15-1982
46.	11.10 ft	on 05-26-1981
47.	10.86 ft	on 05-06-1980
48.	9.30 ft	on 05-27-1979
49.	12.28 ft	on 06-06-1978
50.	8.05 ft	on 06-08-1977
51.	11.63 ft	on 06-20-1976
52.	12.30 ft	on 06-03-1975
53.	15.52 ft	on 06-17-1974
54.	10.07 ft	on 05-18-1973
55.	17.97 ft	on 06-01-1972
56.	14.06 ft	on 05-14-1971
57.	11.78 ft	on 06-04-1970
58.	11.87 ft	on 05-25-1969
59.	12.27 ft	on 05-21-1968
60.	13.92 ft	on 06-23-1967
61.	9.86 ft	on 05-10-1966
62.	11.53 ft	on 05-29-1965
63.	13.43 ft	on 06-12-1964
64.	10.85 ft	on 05-24-1963
65.	10.48 ft	on 05-28-1962
66.	13.69 ft	on 06-05-1961
67.	11.55 ft	on 06-04-1960
68.	12.77 ft	on 06-04-1959
69.	11.50 ft	on 05-25-1958
70.	13.70 ft	on 05-21-1957
71.	14.19 ft	on 05-22-1956
72.	15.13 ft	on 06-13-1955
73.	12.85 ft	on 05-21-1954
74.	11.79 ft	on 06-14-1953
75.	11.23 ft	on 05-20-1952
76.	13.71 ft	on 05-24-1951
77.	15.47 ft	on 06-17-1950
78.	14.76 ft	on 05-15-1949
79.	17.62 ft	on 05-30-1948
80.	11.43 ft	on 05-09-1947
81.	11.93 ft	on 05-28-1946
82.	12.40 ft	on 06-01-1945
83.	9.72 ft	on 06-02-1944
84.	11.14 ft	on 06-10-1943
85.	13.09 ft	on 05-27-1942
86.	7.23 ft	on 06-08-1941
87.	8.74 ft	on 05-25-1940
88.	13.60 ft	on 05-27-1938
89.	11.90 ft	on 06-04-1937
90.	10.34 ft	on 05-15-1936
91.	11.42 ft	on 05-31-1935
92.	14.96 ft	on 04-26-1934
93.	13.30 ft	on 06-17-1933
94.	10.00 ft	on 05-11-1932
95.	9.49 ft	on 05-15-1931
96.	9.08 ft	on 06-08-1930
97.	9.14 ft	on 05-23-1929

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.	15.50 ft	on 05-11-2018
5.	15.47 ft	on 06-17-1950
6.	15.13 ft	on 06-13-1955
7.	14.96 ft	on 04-26-1934
8.	14.82 ft	on 05-18-2018
9.	14.76 ft	on 05-15-1949
10.	14.59 ft	on 05-17-1997
11.	14.38 ft	on 11-16-2021
12.	14.25 ft	on 05-22-1991
13.	14.19 ft	on 05-22-1956
14.	14.06 ft	on 05-14-1971
15.	13.92 ft	on 06-23-1967
16.	13.72 ft	on 06-01-1986
17.	13.71 ft	on 05-24-1951
18.	13.70 ft	on 05-21-1957
19.	13.69 ft	on 06-05-1961
20.	13.60 ft	on 05-27-1938
21.	13.43 ft	on 06-12-1964
22.	13.30 ft	on 06-17-1933
23.	13.09 ft	on 05-27-1942
24.	13.06 ft	on 05-13-2013
25.	13.02 ft	on 06-10-2011
26.	12.91 ft	on 05-31-1983
27.	12.87 ft	on 05-20-2008
28.	12.85 ft	on 05-21-1954
29.	12.81 ft	on 06-01-2020
30.	12.77 ft	on 06-04-1959
31.	12.48 ft	on 06-17-1999
32.	12.46 ft	on 05-24-2017
33.	12.40 ft	on 06-01-1945
34.	12.30 ft	on 06-03-1975
35.	12.28 ft	on 06-06-1978
36.	12.27 ft	on 05-21-1968
37.	12.23 ft	on 05-30-2002
38.	12.10 ft	on 06-08-1996
39.	11.97 ft	on 05-18-2014
40.	11.93 ft	on 05-28-1946
41.	11.90 ft	on 06-04-1937
42.	11.87 ft	on 05-25-1969
43.	11.79 ft	on 06-14-1953
44.	11.78 ft	on 06-04-1970
45.	11.76 ft	on 06-15-1982
46.	11.72 ft	on 04-23-2016
47.	11.63 ft	on 06-20-1976
48.	11.59 ft	on 05-21-2006
49.	11.55 ft	on 06-04-1960
50.	11.53 ft	on 05-29-1965
51.	11.52 ft	on 05-13-1987
52.	11.50 ft	on 05-25-1958
53.	11.43 ft	on 05-09-1947
54.	11.42 ft	on 05-31-1935
55.	11.29 ft	on 05-24-1985
56.	11.26 ft	on 06-16-1984
57.	11.23 ft	on 05-07-1998
58.	11.23 ft	on 05-20-1952
59.	11.17 ft	on 05-07-2023
60.	11.14 ft	on 06-10-1943
61.	11.10 ft	on 05-17-2012
62.	11.10 ft	on 05-26-1981
63.	11.02 ft	on 06-06-2022
64.	10.97 ft	on 05-15-1993
65.	10.86 ft	on 05-06-1980
66.	10.85 ft	on 05-24-1963
67.	10.76 ft	on 05-31-1995
68.	10.69 ft	on 06-01-1990
69.	10.67 ft	on 05-13-1988
70.	10.59 ft	on 06-05-2007
71.	10.56 ft	on 05-18-2021
72.	10.48 ft	on 05-28-1962
73.	10.34 ft	on 05-15-1936
74.	10.24 ft	on 06-03-2010
75.	10.23 ft	on 06-03-1989
76.	10.14 ft	on 10-21-2003
77.	10.07 ft	on 05-18-1973
78.	10.00 ft	on 05-11-1932
79.	9.89 ft	on 05-31-2009
80.	9.86 ft	on 05-10-1966
81.	9.72 ft	on 06-02-1944
82.	9.49 ft	on 05-15-1931
83.	9.47 ft	on 05-11-2019
84.	9.38 ft	on 05-31-2003
85.	9.30 ft	on 05-27-1979
86.	9.14 ft	on 05-23-1929
87.	9.13 ft	on 05-22-2000
88.	9.09 ft	on 05-12-1994
89.	9.08 ft	on 06-08-1930
90.	8.74 ft	on 05-25-1940
91.	8.67 ft	on 05-07-1992
92.	8.66 ft	on 05-24-2001
93.	8.37 ft	on 05-17-2024	(P)
94.	8.26 ft	on 05-24-2015
95.	8.05 ft	on 06-08-1977
96.	7.23 ft	on 06-08-1941
97.	7.10 ft	on 04-27-2005