S. Santiam River at Waterloo
Critical Stages
10.2' - Action
12' - Flood
14' - Moderate
16' - Major
Latest Observation
Updated: 1:15 AM PST 12/13/25
Status: No Flooding
Stage: 4.65 ft
Flow: 3.43 kcfs
Forecast
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 4 AM 12/13 | 4.76 | 3.63 |
| 10 AM 12/13 | 4.55 | 3.24 |
| 4 PM 12/13 | 4.18 | 2.59 |
| 10 PM 12/13 | 4.17 | 2.58 |
| 4 AM 12/14 | 4.16 | 2.56 |
| 10 AM 12/14 | 4.15 | 2.54 |
| 4 PM 12/14 | 4.14 | 2.52 |
| 10 PM 12/14 | 4.14 | 2.52 |
| 4 AM 12/15 | 4.13 | 2.51 |
| 10 AM 12/15 | 4.13 | 2.51 |
| 4 PM 12/15 | 4.19 | 2.61 |
| 10 PM 12/15 | 4.26 | 2.73 |
| 4 AM 12/16 | 4.29 | 2.78 |
| 10 AM 12/16 | 4.47 | 3.1 |
| 4 PM 12/16 | 4.89 | 3.88 |
| 10 PM 12/16 | 5.27 | 4.68 |
| 4 AM 12/17 | 5.73 | 5.7 |
| 10 AM 12/17 | 6.02 | 6.38 |
| 4 PM 12/17 | 6.05 | 6.45 |
| 10 PM 12/17 | 5.94 | 6.19 |
| 4 AM 12/18 | 5.84 | 5.96 |
| 10 AM 12/18 | 5.87 | 6.03 |
| 4 PM 12/18 | 6.29 | 7.03 |
| 10 PM 12/18 | 7.25 | 9.53 |
| 4 AM 12/19 | 8.17 | 12.3 |
| 10 AM 12/19 | 8.61 | 13.7 |
| 4 PM 12/19 | 8.66 | 13.8 |
| 10 PM 12/19 | 8.54 | 13.5 |
| 4 AM 12/20 | 8.23 | 12.5 |
| 10 AM 12/20 | 7.81 | 11.2 |
| 4 PM 12/20 | 7.43 | 10 |
| 10 PM 12/20 | 7.14 | 9.21 |
| 4 AM 12/21 | 6.9 | 8.56 |
| 10 AM 12/21 | 6.74 | 8.15 |
| 4 PM 12/21 | 6.68 | 7.99 |
| 10 PM 12/21 | 6.67 | 7.97 |
| 4 AM 12/22 | 6.61 | 7.82 |
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 1:30 AM 12/13 | 4.66 | 3.45 |
| 1:15 AM 12/13 | 4.65 | 3.43 |
| 1:10 AM 12/13 | 4.65 | 3.43 |
| 1:05 AM 12/13 | 4.67 | 3.46 |
| 1:00 AM 12/13 | 4.66 | 3.45 |
| 12:55 AM 12/13 | 4.68 | 3.48 |
| 12:50 AM 12/13 | 4.67 | 3.46 |
| 12:45 AM 12/13 | 4.67 | 3.46 |
| 12:40 AM 12/13 | 4.69 | 3.5 |
| 12:35 AM 12/13 | 4.68 | 3.48 |
| 12:30 AM 12/13 | 4.67 | 3.46 |
| 12:25 AM 12/13 | 4.66 | 3.45 |
| 12:20 AM 12/13 | 4.66 | 3.45 |
| 12:15 AM 12/13 | 4.69 | 3.5 |
| 12:10 AM 12/13 | 4.68 | 3.48 |
| 12:05 AM 12/13 | 4.68 | 3.48 |
| 12:00 AM 12/13 | 4.69 | 3.5 |
| 11:55 PM 12/12 | 4.68 | 3.48 |
| 11:50 PM 12/12 | 4.69 | 3.5 |
| 11:45 PM 12/12 | 4.68 | 3.48 |
| 11:40 PM 12/12 | 4.7 | 3.52 |
| 11:35 PM 12/12 | 4.68 | 3.48 |
| 11:30 PM 12/12 | 4.69 | 3.5 |
| 11:25 PM 12/12 | 4.69 | 3.5 |
| 11:20 PM 12/12 | 4.68 | 3.48 |
| 11:15 PM 12/12 | 4.68 | 3.48 |
| 11:10 PM 12/12 | 4.68 | 3.48 |
| 11:05 PM 12/12 | 4.7 | 3.52 |
| 11:00 PM 12/12 | 4.67 | 3.46 |
| 10:55 PM 12/12 | 4.69 | 3.5 |
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.
