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Snohomish River near Monroe

Critical Stages
10' - Action
15' - Flood
16' - Moderate
17' - Major

Latest Observation

Updated: 7:15 AM PST 12/6/25

Status: No Flooding

Stage: 5.81 ft

Flow: 15.9 kcfs

Forecast

TimeStage (ft)Flow (kcfs)
10 AM 12/6 6.42 18.2
4 PM 12/6 6.61 18.9
10 PM 12/6 6.27 17.6
4 AM 12/7 6.11 17
10 AM 12/7 5.85 16.1
4 PM 12/7 5.93 16.4
10 PM 12/7 6.55 18.7
4 AM 12/8 6.77 19.5
10 AM 12/8 7.51 22.5
4 PM 12/8 9.78 32.1
10 PM 12/8 12.31 43.9
4 AM 12/9 14.66 55.8
10 AM 12/9 16.2 63.9
4 PM 12/9 16.73 66.8
10 PM 12/9 16.26 64.3
4 AM 12/10 15.87 62.2
10 AM 12/10 15.59 60.7
4 PM 12/10 16.14 63.6
10 PM 12/10 17 68.3
4 AM 12/11 17.24 69.6
10 AM 12/11 16.59 66.1
4 PM 12/11 15.45 59.9
10 PM 12/11 14.81 56.5
4 AM 12/12 14.55 55.2
10 AM 12/12 14.13 53
4 PM 12/12 13.71 50.9
10 PM 12/12 13.28 48.7
4 AM 12/13 12.84 46.5
10 AM 12/13 12.17 43.2
4 PM 12/13 11.48 39.9
10 PM 12/13 11.23 38.7
4 AM 12/14 10.86 37
10 AM 12/14 10.13 33.7
4 PM 12/14 9.32 30.1
10 PM 12/14 8.61 27
4 AM 12/15 8.07 24.7
TimeStage (ft)Flow (kcfs)
7:15 AM 12/6 5.81 15.9
7:00 AM 12/6 5.73 15.6
6:45 AM 12/6 5.66 15.4
6:30 AM 12/6 5.58 15.1
6:15 AM 12/6 5.5 14.8
6:00 AM 12/6 5.44 14.6
5:45 AM 12/6 5.35 14.3
5:30 AM 12/6 5.29 14.1
5:15 AM 12/6 5.23 13.9
5:00 AM 12/6 5.16 13.6
4:45 AM 12/6 5.1 13.4
4:30 AM 12/6 5.05 13.2
4:15 AM 12/6 5 13.1
4:00 AM 12/6 4.95 12.9
3:45 AM 12/6 4.91 12.7
3:30 AM 12/6 4.87 12.6
3:15 AM 12/6 4.84 12.5
3:00 AM 12/6 4.79 12.3
2:45 AM 12/6 4.75 12.2
2:30 AM 12/6 4.71 12.1
2:15 AM 12/6 4.66 11.9
2:00 AM 12/6 4.61 11.7
1:45 AM 12/6 4.56 11.6
1:30 AM 12/6 4.51 11.4
1:15 AM 12/6 4.44 11.2
1:00 AM 12/6 4.37 10.9
12:45 AM 12/6 4.29 10.7
12:30 AM 12/6 4.21 10.4
12:15 AM 12/6 4.11 10.1
12:00 AM 12/6 4.02 9.81
Hydrograph for Snohomish River near Monroe
22' - the Snohomish River will cause severe flooding...with deep and swift flood waters inundating farm land...residential areas...and roads. Levees could suffer overtopping and major damage. Flooding will occur all along the river including headwaters...tributaries...and other streams within and near the Snohomish River Basin. A stage of 22 feet at this location corresponds to Phase 4 in the Snohomish County Flood Warning System.
21' - Flooding will occur all along the river including headwaters...tributaries...and other streams within and near the Snohomish River Basin. The Snohomish River stage at this location corresponds to Phase 4 in the Snohomish County Flood Warning System.
20' - the Snohomish River will cause severe flooding in the valley. The river will flood many homes...cover much of the farmlands...and close many roads. Flooding will occur all along the river including headwaters...tributaries...and other streams within and near the Snohomish River Basin. A stage of 20 feet at this location corresponds to Phase 3 in the Snohomish County Flood Warning System.
17' - the Snohomish River will cause major flooding...inundating farm land...roads...and some residential areas. Levees will likely suffer damage. Flooding will occur all along the river including headwaters...tributaries...and other streams within and near the Snohomish River Basin. A stage of 17 feet at this location corresponds to Phase 2 in the Snohomish County Flood Warning System.
16' - the Snohomish River will flood several roads and much of the low pasture land in the river valley. A stage of 16 feet at this location corresponds to Phase 2 in the Snohomish County Flood Warning System.
15' - the Snohomish River will cause minor flooding of low pasture lands and several roads near the river. A stage of 15 feet at this location corresponds to Phase 2 in the Snohomish County Flood Warning System.
14' - feet...the Snohomish River will locally spill over its banks into low pasture lands along the river.
DateStage (ft)
Nov 25, 1990 25.3
Jan 8, 2009 24.12
Nov 30, 1995 24.1
Nov 7, 2006 23.54
Dec 4, 1975 22.92
Nov 10, 1990 21.65
Feb 9, 1996 21.53
Nov 24, 1986 20.68
Dec 3, 1977 19.74
Dec 26, 1980 19.6
Jan 17, 2011 19.24
Nov 9, 1995 18.72
Nov 18, 2015 18.7
Dec 18, 1979 18.48
Feb 2, 2020 18.41
Feb 16, 1982 18
Nov 13, 2008 17.89
Dec 5, 1989 17.68
Dec 26, 1967 17.68
Jan 17, 1974 17.59

Data provided by the National Weather Service.