S. Santiam River at Waterloo
Critical Stages
10.2' - Action
12' - Flood
14' - Moderate
16' - Major
Latest Observation
Updated: 12:45 PM PST 12/16/25
Status: No Flooding
Stage: 4.41 ft
Flow: 2.99 kcfs
Forecast
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 4 PM 12/16 | 4.14 | 2.52 |
| 10 PM 12/16 | 4.17 | 2.58 |
| 4 AM 12/17 | 4.31 | 2.82 |
| 10 AM 12/17 | 4.42 | 3.01 |
| 4 PM 12/17 | 4.45 | 3.06 |
| 10 PM 12/17 | 4.42 | 3.01 |
| 4 AM 12/18 | 4.39 | 2.96 |
| 10 AM 12/18 | 4.46 | 3.08 |
| 4 PM 12/18 | 4.75 | 3.62 |
| 10 PM 12/18 | 6.05 | 6.45 |
| 4 AM 12/19 | 6.53 | 7.62 |
| 10 AM 12/19 | 8.42 | 13.1 |
| 4 PM 12/19 | 11.1 | 22.3 |
| 10 PM 12/19 | 10.64 | 20.6 |
| 4 AM 12/20 | 9.11 | 15.3 |
| 10 AM 12/20 | 7.93 | 11.5 |
| 4 PM 12/20 | 7.04 | 8.93 |
| 10 PM 12/20 | 6.45 | 7.42 |
| 4 AM 12/21 | 6.15 | 6.69 |
| 10 AM 12/21 | 6.08 | 6.52 |
| 4 PM 12/21 | 6.05 | 6.45 |
| 10 PM 12/21 | 6.04 | 6.43 |
| 4 AM 12/22 | 6.07 | 6.5 |
| 10 AM 12/22 | 6.11 | 6.6 |
| 4 PM 12/22 | 6.16 | 6.72 |
| 10 PM 12/22 | 6.2 | 6.81 |
| 4 AM 12/23 | 6.22 | 6.86 |
| 10 AM 12/23 | 6.21 | 6.84 |
| 4 PM 12/23 | 6.18 | 6.76 |
| 10 PM 12/23 | 6.14 | 6.67 |
| 4 AM 12/24 | 6.09 | 6.55 |
| 10 AM 12/24 | 6.05 | 6.45 |
| 4 PM 12/24 | 6.03 | 6.4 |
| 10 PM 12/24 | 6.03 | 6.4 |
| 4 AM 12/25 | 6.03 | 6.4 |
| 10 AM 12/25 | 6.04 | 6.43 |
| 4 PM 12/25 | 6.04 | 6.43 |
| 10 PM 12/25 | 6.04 | 6.43 |
| 4 AM 12/26 | 6.06 | 6.48 |
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 12:45 PM 12/16 | 4.41 | 2.99 |
| 12:30 PM 12/16 | 4.42 | 3.01 |
| 12:15 PM 12/16 | 4.41 | 2.99 |
| 12:00 PM 12/16 | 4.37 | 2.92 |
| 11:45 AM 12/16 | 4.35 | 2.89 |
| 11:30 AM 12/16 | 4.32 | 2.83 |
| 10:00 AM 12/16 | 4.19 | 2.61 |
| 9:45 AM 12/16 | 4.18 | 2.59 |
| 9:30 AM 12/16 | 4.17 | 2.58 |
| 9:15 AM 12/16 | 4.18 | 2.59 |
| 9:00 AM 12/16 | 4.17 | 2.58 |
| 8:45 AM 12/16 | 4.18 | 2.59 |
| 8:30 AM 12/16 | 4.18 | 2.59 |
| 8:15 AM 12/16 | 4.17 | 2.58 |
| 8:10 AM 12/16 | 4.18 | 2.59 |
| 8:05 AM 12/16 | 4.16 | 2.56 |
| 8:00 AM 12/16 | 4.16 | 2.56 |
| 7:55 AM 12/16 | 4.15 | 2.54 |
| 7:50 AM 12/16 | 4.14 | 2.52 |
| 7:45 AM 12/16 | 4.15 | 2.54 |
| 7:40 AM 12/16 | 4.15 | 2.54 |
| 7:35 AM 12/16 | 4.16 | 2.56 |
| 7:30 AM 12/16 | 4.15 | 2.54 |
| 7:25 AM 12/16 | 4.14 | 2.52 |
| 7:20 AM 12/16 | 4.15 | 2.54 |
| 7:15 AM 12/16 | 4.13 | 2.51 |
| 7:10 AM 12/16 | 4.13 | 2.51 |
| 7:05 AM 12/16 | 4.13 | 2.51 |
| 7:00 AM 12/16 | 4.12 | 2.49 |
| 6:55 AM 12/16 | 4.11 | 2.47 |
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.
| Date | Stage (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.
