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S. Santiam River at Waterloo

Critical Stages
10.2' - Action
12' - Flood
14' - Moderate
16' - Major

Latest Observation

Updated: 11:00 PM PST 12/16/25

Status: No Flooding

Stage: 4.34 ft

Flow: 2.87 kcfs

Forecast

TimeStage (ft)Flow (kcfs)
4 AM 12/17 4.3 2.8
10 AM 12/17 4.74 3.6
4 PM 12/17 5.31 4.76
10 PM 12/17 5.28 4.7
4 AM 12/18 5.26 4.65
10 AM 12/18 5.69 5.61
4 PM 12/18 6.45 7.42
10 PM 12/18 7.58 10.5
4 AM 12/19 8.5 13.3
10 AM 12/19 9.06 15.1
4 PM 12/19 8.87 14.5
10 PM 12/19 8.65 13.8
4 AM 12/20 8.44 13.1
10 AM 12/20 8.25 12.5
4 PM 12/20 8.11 12.1
10 PM 12/20 8.02 11.8
4 AM 12/21 7.96 11.6
10 AM 12/21 7.59 10.5
4 PM 12/21 7.23 9.47
10 PM 12/21 7.27 9.58
4 AM 12/22 7.31 9.7
10 AM 12/22 7.34 9.78
4 PM 12/22 7.34 9.78
10 PM 12/22 7.33 9.76
4 AM 12/23 7.3 9.67
10 AM 12/23 7.26 9.56
4 PM 12/23 7.23 9.47
10 PM 12/23 7.2 9.38
4 AM 12/24 7.18 9.33
10 AM 12/24 7.15 9.24
4 PM 12/24 7.15 9.24
10 PM 12/24 7.15 9.24
4 AM 12/25 7.15 9.24
10 AM 12/25 7.1 9.1
4 PM 12/25 6.62 7.84
10 PM 12/25 6.01 6.36
4 AM 12/26 5.98 6.29
TimeStage (ft)Flow (kcfs)
11:15 PM 12/16 4.31 2.82
11:10 PM 12/16 4.32 2.83
11:05 PM 12/16 4.31 2.82
11:00 PM 12/16 4.34 2.87
10:55 PM 12/16 4.33 2.85
10:50 PM 12/16 4.33 2.85
10:45 PM 12/16 4.32 2.83
10:40 PM 12/16 4.32 2.83
10:35 PM 12/16 4.31 2.82
10:30 PM 12/16 4.31 2.82
10:25 PM 12/16 4.31 2.82
10:20 PM 12/16 4.31 2.82
10:15 PM 12/16 4.32 2.83
10:10 PM 12/16 4.31 2.82
10:05 PM 12/16 4.32 2.83
10:00 PM 12/16 4.3 2.8
9:55 PM 12/16 4.31 2.82
9:50 PM 12/16 4.31 2.82
9:45 PM 12/16 4.31 2.82
9:40 PM 12/16 4.31 2.82
9:35 PM 12/16 4.31 2.82
9:30 PM 12/16 4.31 2.82
9:25 PM 12/16 4.31 2.82
9:20 PM 12/16 4.3 2.8
9:15 PM 12/16 4.31 2.82
9:10 PM 12/16 4.3 2.8
9:05 PM 12/16 4.31 2.82
9:00 PM 12/16 4.3 2.8
8:55 PM 12/16 4.32 2.83
8:50 PM 12/16 4.33 2.85
Hydrograph for S. Santiam River at Waterloo
16' - expect widespread flooding of low-lying farmland and property from Sweet Home downstream to Lebanon, with some flooding of secondary roads near the South Santiam.
12' - expect flooding of low-lying areas along the river.
DateStage (ft)
Dec 22, 1964 24.5
Dec 28, 1945 22.85
Mar 31, 1931 22
Dec 11, 1956 21.1
Feb 10, 1961 21.08
Nov 22, 1953 20.2
Jan 1, 1943 20.1
Dec 21, 1955 19.6
Feb 21, 1927 19.4
Jan 18, 1954 19.4
Feb 7, 1996 13.09
Apr 12, 2019 11.96
Nov 19, 1996 11.31
Jan 15, 1974 10.58
Nov 26, 1999 10.08

Data provided by the National Weather Service.