Cosumnes River at McConnell
Critical Stages
38.5' - Action
44.5' - Flood
53.4' - Moderate
53.5' - Major
Latest Observation
Updated: 2:15 AM PST 12/16/25
Status: No Flooding
Stage: 26 ft
Flow: 0.01 kcfs
Forecast
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 4 AM 12/16 | 26.03 | 0.0127 |
| 5 AM 12/16 | 26.03 | 0.0127 |
| 6 AM 12/16 | 26.03 | 0.0127 |
| 7 AM 12/16 | 26.03 | 0.0127 |
| 8 AM 12/16 | 26.03 | 0.0127 |
| 9 AM 12/16 | 26.03 | 0.0127 |
| 10 AM 12/16 | 26.03 | 0.0127 |
| 11 AM 12/16 | 26.03 | 0.0127 |
| 12 PM 12/16 | 26.03 | 0.0127 |
| 1 PM 12/16 | 26.03 | 0.0127 |
| 2 PM 12/16 | 26.03 | 0.0127 |
| 3 PM 12/16 | 26.03 | 0.0127 |
| 4 PM 12/16 | 26.03 | 0.0127 |
| 5 PM 12/16 | 26.03 | 0.0127 |
| 6 PM 12/16 | 26.03 | 0.0127 |
| 7 PM 12/16 | 26.03 | 0.0127 |
| 8 PM 12/16 | 26.03 | 0.0127 |
| 9 PM 12/16 | 26.03 | 0.0127 |
| 10 PM 12/16 | 26.03 | 0.0127 |
| 11 PM 12/16 | 26.03 | 0.0127 |
| 12 AM 12/17 | 26.02 | 0.0117 |
| 1 AM 12/17 | 26.02 | 0.0117 |
| 2 AM 12/17 | 26.02 | 0.0117 |
| 3 AM 12/17 | 26.02 | 0.0117 |
| 4 AM 12/17 | 26.02 | 0.0117 |
| 5 AM 12/17 | 26.02 | 0.0117 |
| 6 AM 12/17 | 26.02 | 0.0117 |
| 7 AM 12/17 | 26.02 | 0.0117 |
| 8 AM 12/17 | 26.02 | 0.0117 |
| 9 AM 12/17 | 26.02 | 0.0117 |
| 10 AM 12/17 | 26.03 | 0.0127 |
| 11 AM 12/17 | 26.03 | 0.0127 |
| 12 PM 12/17 | 26.03 | 0.0127 |
| 1 PM 12/17 | 26.03 | 0.0127 |
| 2 PM 12/17 | 26.03 | 0.0127 |
| 3 PM 12/17 | 26.03 | 0.0127 |
| 4 PM 12/17 | 26.04 | 0.0137 |
| 5 PM 12/17 | 26.04 | 0.0137 |
| 6 PM 12/17 | 26.05 | 0.0148 |
| 7 PM 12/17 | 26.05 | 0.0148 |
| 8 PM 12/17 | 26.06 | 0.0161 |
| 9 PM 12/17 | 26.06 | 0.0161 |
| 10 PM 12/17 | 26.07 | 0.0174 |
| 11 PM 12/17 | 26.07 | 0.0174 |
| 12 AM 12/18 | 26.08 | 0.0188 |
| 1 AM 12/18 | 26.09 | 0.0203 |
| 2 AM 12/18 | 26.1 | 0.022 |
| 3 AM 12/18 | 26.11 | 0.0231 |
| 4 AM 12/18 | 26.12 | 0.0243 |
| 5 AM 12/18 | 26.14 | 0.0268 |
| 6 AM 12/18 | 26.15 | 0.0281 |
| 7 AM 12/18 | 26.16 | 0.0296 |
| 8 AM 12/18 | 26.18 | 0.0326 |
| 9 AM 12/18 | 26.19 | 0.0343 |
| 10 AM 12/18 | 26.2 | 0.036 |
| 11 AM 12/18 | 26.21 | 0.0373 |
| 12 PM 12/18 | 26.23 | 0.04 |
| 1 PM 12/18 | 26.24 | 0.0414 |
| 2 PM 12/18 | 26.25 | 0.0429 |
| 3 PM 12/18 | 26.25 | 0.0429 |
| 4 PM 12/18 | 26.26 | 0.0444 |
| 5 PM 12/18 | 26.26 | 0.0444 |
| 6 PM 12/18 | 26.27 | 0.0459 |
| 7 PM 12/18 | 26.27 | 0.0459 |
| 8 PM 12/18 | 26.27 | 0.0459 |
| 9 PM 12/18 | 26.27 | 0.0459 |
| 10 PM 12/18 | 26.26 | 0.0444 |
| 11 PM 12/18 | 26.26 | 0.0444 |
| 12 AM 12/19 | 26.26 | 0.0444 |
| 1 AM 12/19 | 26.25 | 0.0429 |
| 2 AM 12/19 | 26.25 | 0.0429 |
| 3 AM 12/19 | 26.24 | 0.0414 |
| 4 AM 12/19 | 26.24 | 0.0414 |
| 5 AM 12/19 | 26.23 | 0.04 |
| 6 AM 12/19 | 26.22 | 0.0386 |
| 7 AM 12/19 | 26.21 | 0.0373 |
| 8 AM 12/19 | 26.21 | 0.0373 |
| 9 AM 12/19 | 26.2 | 0.036 |
| 10 AM 12/19 | 26.19 | 0.0343 |
| 11 AM 12/19 | 26.19 | 0.0343 |
| 12 PM 12/19 | 26.18 | 0.0326 |
| 1 PM 12/19 | 26.18 | 0.0326 |
| 2 PM 12/19 | 26.17 | 0.0311 |
| 3 PM 12/19 | 26.16 | 0.0296 |
| 4 PM 12/19 | 26.16 | 0.0296 |
| 5 PM 12/19 | 26.16 | 0.0296 |
| 6 PM 12/19 | 26.15 | 0.0281 |
| 7 PM 12/19 | 26.15 | 0.0281 |
| 8 PM 12/19 | 26.14 | 0.0268 |
| 9 PM 12/19 | 26.14 | 0.0268 |
| 10 PM 12/19 | 26.13 | 0.0255 |
| 11 PM 12/19 | 26.13 | 0.0255 |
| 12 AM 12/20 | 26.13 | 0.0255 |
| 1 AM 12/20 | 26.13 | 0.0255 |
| 2 AM 12/20 | 26.12 | 0.0243 |
| 3 AM 12/20 | 26.12 | 0.0243 |
| 4 AM 12/20 | 26.12 | 0.0243 |
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 2:15 AM 12/16 | 26 | 0.01 |
| 2:00 AM 12/16 | 26.01 | 0.0108 |
| 1:45 AM 12/16 | 26.01 | 0.0108 |
| 1:30 AM 12/16 | 26 | 0.01 |
| 1:15 AM 12/16 | 26 | 0.01 |
| 1:00 AM 12/16 | 26 | 0.01 |
| 12:45 AM 12/16 | 26 | 0.01 |
| 12:30 AM 12/16 | 26 | 0.01 |
| 12:15 AM 12/16 | 26 | 0.01 |
| 12:00 AM 12/16 | 26.01 | 0.0108 |
| 11:45 PM 12/15 | 26.01 | 0.0108 |
| 11:30 PM 12/15 | 26 | 0.01 |
| 11:15 PM 12/15 | 26 | 0.01 |
| 11:00 PM 12/15 | 26 | 0.01 |
| 10:45 PM 12/15 | 26.01 | 0.0108 |
| 10:30 PM 12/15 | 26.01 | 0.0108 |
| 10:15 PM 12/15 | 26.01 | 0.0108 |
| 10:00 PM 12/15 | 26.01 | 0.0108 |
| 9:45 PM 12/15 | 26.01 | 0.0108 |
| 9:30 PM 12/15 | 26.01 | 0.0108 |
| 9:15 PM 12/15 | 26.01 | 0.0108 |
| 9:00 PM 12/15 | 26 | 0.01 |
| 8:45 PM 12/15 | 26.01 | 0.0108 |
| 8:30 PM 12/15 | 26.01 | 0.0108 |
| 8:15 PM 12/15 | 26.01 | 0.0108 |
| 8:00 PM 12/15 | 26.01 | 0.0108 |
| 7:45 PM 12/15 | 26.01 | 0.0108 |
| 7:30 PM 12/15 | 26.01 | 0.0108 |
| 7:15 PM 12/15 | 26.01 | 0.0108 |
| 7:00 PM 12/15 | 26.01 | 0.0108 |
46.5' -
At approximately 44,000 cfs, water exits the river upstream and downstream of Highway 99. Dillard Road is flooded from Highway 99 to Riley Road. Twin Cities Road is flooded from Hardesty Lane to Christensen Road.
44.5' -
Flood stage.
41.5' -
The Cosumnes River overflow channel begins to flow.
38.5' -
Monitor Stage.
| Date | Stage (ft) |
|---|---|
| Jan 14, 1980 | 49.9 |
| Jan 2, 1997 | 48.5 |
| Feb 18, 1986 | 47.1 |
| Jan 1, 2006 | 47.02 |
| Feb 4, 1998 | 46.56 |
| Dec 23, 1955 | 46.26 |
| Apr 5, 2006 | 46.12 |
| Dec 23, 1964 | 46.1 |
| Mar 14, 1983 | 45.97 |
| Feb 23, 1936 | 45.9 |
| Feb 1, 1963 | 45.52 |
| Jan 22, 1967 | 45.1 |
| Nov 21, 1950 | 44.9 |
| Dec 26, 1983 | 44.64 |
| Jan 22, 1969 | 44.6 |
| Jan 1, 2017 | 43.97 |
| Feb 10, 2017 | 43.84 |
| Jan 17, 1973 | 43.7 |
| Mar 2, 2024 | 42.98 |
| Mar 23, 2018 | 42.92 |
Data provided by the National Weather Service.
