« Back to Crescent Valley Rivers

Chehalis River at Porter

Critical Stages
45.5' - Action
48' - Flood
50' - Moderate
52' - Major

Latest Observation

Updated: 7:45 AM PST 12/6/25

Status: No Flooding

Stage: 36.05 ft

Flow: 4.16 kcfs

Forecast

TimeStage (ft)Flow (kcfs)
10 AM 12/6 36.26 4.36
4 PM 12/6 36.5 4.61
10 PM 12/6 36.56 4.67
4 AM 12/7 36.56 4.67
10 AM 12/7 36.61 4.72
4 PM 12/7 36.71 4.82
10 PM 12/7 36.78 4.89
4 AM 12/8 36.83 4.94
10 AM 12/8 37.14 5.27
4 PM 12/8 38.03 6.2
10 PM 12/8 39.55 7.75
4 AM 12/9 41.3 9.66
10 AM 12/9 43.22 11.9
4 PM 12/9 44.76 14.4
10 PM 12/9 46.16 16.8
4 AM 12/10 47 19.1
10 AM 12/10 47.61 21.2
4 PM 12/10 48.02 23.2
10 PM 12/10 48.35 24.8
4 AM 12/11 48.64 26.4
10 AM 12/11 48.88 27.7
4 PM 12/11 49.05 29
10 PM 12/11 49.21 30.3
4 AM 12/12 49.36 31.5
10 AM 12/12 49.47 32.5
4 PM 12/12 49.55 33.2
10 PM 12/12 49.59 33.5
4 AM 12/13 49.59 33.5
10 AM 12/13 49.56 33.3
4 PM 12/13 49.5 32.7
10 PM 12/13 49.41 32
4 AM 12/14 49.3 31
10 AM 12/14 49.17 29.9
4 PM 12/14 49.02 28.7
10 PM 12/14 48.82 27.4
4 AM 12/15 48.55 25.9
10 AM 12/15 48.25 24.3
4 PM 12/15 47.95 22.8
10 PM 12/15 47.66 21.5
4 AM 12/16 47.4 20.3
TimeStage (ft)Flow (kcfs)
7:45 AM 12/6 36.05 4.16
7:30 AM 12/6 36.05 4.16
7:15 AM 12/6 36.03 4.14
7:00 AM 12/6 36.03 4.14
6:45 AM 12/6 35.99 4.1
6:30 AM 12/6 36 4.11
6:15 AM 12/6 35.96 4.07
6:00 AM 12/6 35.97 4.08
5:45 AM 12/6 35.96 4.07
5:30 AM 12/6 35.94 4.05
5:15 AM 12/6 35.92 4.03
5:00 AM 12/6 35.91 4.02
4:45 AM 12/6 35.91 4.02
4:30 AM 12/6 35.89 4
4:15 AM 12/6 35.87 3.98
4:00 AM 12/6 35.85 3.96
3:45 AM 12/6 35.84 3.95
3:30 AM 12/6 35.81 3.93
3:15 AM 12/6 35.82 3.94
3:00 AM 12/6 35.81 3.93
2:45 AM 12/6 35.78 3.9
2:30 AM 12/6 35.77 3.89
2:15 AM 12/6 35.75 3.87
2:00 AM 12/6 35.73 3.85
1:45 AM 12/6 35.72 3.84
1:30 AM 12/6 35.69 3.81
1:15 AM 12/6 35.69 3.81
1:00 AM 12/6 35.66 3.79
12:45 AM 12/6 35.64 3.77
12:30 AM 12/6 35.63 3.76
Hydrograph for Chehalis River at Porter
52' - the Chehalis River in Grays Harbor will cause major near record flooding from Oakville downstream to Grays Harbor. Deep and swift flood waters will inundate numerous farms and roads...including SR 12. High tidal levels at Aberdeen will worsen flooding along the lower reaches. Flooding will occur all along the river including headwaters...tributaries...and other streams within and near the Chehalis River Basin.
50' - feet...the Chehalis River in Grays Harbor will flood numerous farms and roads including SR 12. High tidal levels at Aberdeen will worsen flooding along the lower reaches.
49' - the Chehalis River in Grays Harbor will flood pasture lands and many roads...including SR 12 between Oakville and Rochester. High tidal levels at Aberdeen will worsen flooding along the lower reaches.
48' - the Chehalis River in Grays Harbor will flood low pasture lands and some roads. High tidal levels at Aberdeen will worsen flooding along the lower reaches.
46' - the Chehalis River in Grays Harbor County will locally spill over its banks with shallow water on several roads.
DateStage (ft)
Dec 5, 2007 53.17
Jan 8, 2022 52.01
Jan 15, 2021 49.18
Jan 9, 2020 48.99
Mar 3, 2022 48.79
Dec 23, 2019 48.58
Dec 8, 2023 48.54
Jan 13, 2022 48.36
Nov 14, 2021 48.15
Feb 24, 2021 47.65
Dec 5, 2007 26.06
Feb 9, 1996 25.22
Jan 9, 2009 24.65
Jan 11, 1990 24.52
Jan 22, 1972 23.88
Jan 27, 1971 23.5
Jan 2, 1997 23.43
Dec 5, 1975 23.36
Nov 25, 1986 23.36
Nov 26, 1990 23.17

Data provided by the National Weather Service.