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Issaquah Creek near Issaquah

Critical Stages
Action
Flood
Moderate
Major

Latest Observation

Updated: 3:15 AM PST 12/6/25

Status: No Flooding

Stage: 0.142 ft

Flow: 5 kcfs

Forecast

TimeStage (ft)Flow (kcfs)
10 AM 12/6 0.13979 4.9
4 PM 12/6 0.13006 4.9
10 PM 12/6 0.12063 4.8
4 AM 12/7 0.11187 4.8
10 AM 12/7 0.11419 4.8
4 PM 12/7 0.14624 5
10 PM 12/7 0.1642 5
4 AM 12/8 0.17328 5.1
10 AM 12/8 0.2186 5.2
4 PM 12/8 0.30444 5.6
10 PM 12/8 0.5704 6.6
4 AM 12/9 0.81296 7.5
10 AM 12/9 0.94059 7.9
4 PM 12/9 0.89496 7.7
10 PM 12/9 1.01454 8.1
4 AM 12/10 1.15585 8.5
10 AM 12/10 1.46123 9.4
4 PM 12/10 1.46084 9.4
10 PM 12/10 1.50577 9.5
4 AM 12/11 1.42438 9.3
10 AM 12/11 1.55746 9.6
4 PM 12/11 1.44067 9.3
10 PM 12/11 1.33626 9
4 AM 12/12 1.21586 8.7
10 AM 12/12 1.06562 8.3
4 PM 12/12 0.9489 7.9
10 PM 12/12 0.87148 7.7
4 AM 12/13 0.80865 7.5
10 AM 12/13 0.74187 7.2
4 PM 12/13 0.68323 7
10 PM 12/13 0.62876 6.8
4 AM 12/14 0.57938 6.7
10 AM 12/14 0.53319 6.5
4 PM 12/14 0.49191 6.3
10 PM 12/14 0.45774 6.2
4 AM 12/15 0.43784 6.1
TimeStage (ft)Flow (kcfs)
3:15 AM 12/6 0.142 5
3:00 AM 12/6 0.145 5
2:45 AM 12/6 0.142 5
2:30 AM 12/6 0.145 5
2:15 AM 12/6 0.145 5
2:00 AM 12/6 0.145 5
1:45 AM 12/6 0.145 5
1:30 AM 12/6 0.149 5
1:15 AM 12/6 0.145 5
1:00 AM 12/6 0.149 5
12:45 AM 12/6 0.147 5
12:30 AM 12/6 0.147 5
12:15 AM 12/6 0.147 5
12:00 AM 12/6 0.145 5
11:45 PM 12/5 0.147 5
11:30 PM 12/5 0.147 5
11:15 PM 12/5 0.149 5
11:00 PM 12/5 0.147 5
10:45 PM 12/5 0.147 5
10:30 PM 12/5 0.147 5
10:15 PM 12/5 0.149 5
10:00 PM 12/5 0.149 5
9:45 PM 12/5 0.149 5
9:30 PM 12/5 0.153 5
9:15 PM 12/5 0.153 5
9:00 PM 12/5 0.151 5
8:45 PM 12/5 0.149 5
8:30 PM 12/5 0.147 5
8:15 PM 12/5 0.151 5
8:00 PM 12/5 0.149 5
Hydrograph for Issaquah Creek near Issaquah
2800' - Issaquah Creek will cause severe near record flooding in Issaquah valley. Deep and swift flood waters will inundate residential and business areas and numerous roads. Flooding will occur all along the river including headwaters...tributaries...and other streams within and near the Issaquah Creek Basin.
2300' - Issaquah Creek will cause major flooding in most of the valley. Deep and swift flood waters will inundate residential and business areas and numerous roads. Flooding will occur all along the river including headwaters...tributaries...and other streams within and near the Issaquah Creek Basin.
2000' - Issaquah Creek will flood most low areas in the valley. Swift waters will flood residential and business areas and roads including Newport Way.
1200' - Issaquah Creek will spill over its banks into low flood prone areas of the valley.
DateStage (ft)
Jan 9, 1990 13.5
Nov 24, 1990 13.43
Nov 24, 1986 13.2
Feb 8, 1996 12.84
Jan 8, 2009 12.56
Feb 6, 2020 12.33
Nov 29, 1995 12.11
Jan 25, 1984 11.79
Jan 19, 1986 11.52
Nov 6, 2006 11.5
Nov 14, 2001 11.5
Apr 5, 1991 11.48
Dec 3, 1975 11.46
Dec 9, 2015 11.41
Jan 5, 1983 11.18
Nov 26, 1998 11.18
Jan 1, 1997 11.16
Dec 3, 2007 11.15
Dec 4, 1989 11.11
Feb 19, 1995 10.8

Data provided by the National Weather Service.