Sacramento-San Joaquin Delta at Mallard Island
Critical Stages
Action
Flood
Moderate
Major
Latest Observation
Updated: 6:45 PM PST 12/17/25
Status: Not Defined
Stage: 1.68 ft
Flow: 4.73 kcfs
Forecast
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 8 PM 12/17 | 0.9 | -999 |
| 3 AM 12/18 | 4.5 | 7.51 |
| 6 AM 12/18 | 3.4 | 6.42 |
| 12 PM 12/18 | 6 | 9 |
| 9 PM 12/18 | 0.9 | -999 |
| 4 AM 12/19 | 4.6 | 7.61 |
| 7 AM 12/19 | 3.6 | 6.62 |
| 12 PM 12/19 | 6.1 | 9.1 |
| 9 PM 12/19 | 0.9 | -999 |
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 7:15 PM 12/17 | 1.4 | 4.46 |
| 7:00 PM 12/17 | 1.54 | 4.6 |
| 6:45 PM 12/17 | 1.68 | 4.73 |
| 6:30 PM 12/17 | 1.81 | 4.84 |
| 6:15 PM 12/17 | 1.93 | 4.94 |
| 6:00 PM 12/17 | 2.11 | 5.12 |
| 5:45 PM 12/17 | 2.27 | 5.29 |
| 5:30 PM 12/17 | 2.38 | 5.41 |
| 5:15 PM 12/17 | 2.55 | 5.58 |
| 5:00 PM 12/17 | 2.69 | 5.71 |
| 4:45 PM 12/17 | 2.88 | 5.89 |
| 4:30 PM 12/17 | 3.02 | 6.02 |
| 4:15 PM 12/17 | 3.15 | 6.16 |
| 4:00 PM 12/17 | 3.3 | 6.31 |
| 3:45 PM 12/17 | 3.48 | 6.5 |
| 3:30 PM 12/17 | 3.57 | 6.59 |
| 3:15 PM 12/17 | 3.87 | 6.88 |
| 3:00 PM 12/17 | 4.13 | 7.14 |
| 2:45 PM 12/17 | 4.38 | 7.39 |
| 2:30 PM 12/17 | 4.59 | 7.6 |
| 2:15 PM 12/17 | 4.87 | 7.87 |
| 2:00 PM 12/17 | 5.1 | 8.1 |
| 1:45 PM 12/17 | 5.3 | 8.31 |
| 1:30 PM 12/17 | 5.51 | 8.52 |
| 1:15 PM 12/17 | 5.71 | 8.72 |
| 1:00 PM 12/17 | 5.86 | 8.86 |
| 12:45 PM 12/17 | 5.97 | 8.97 |
| 12:30 PM 12/17 | 6.05 | 9.05 |
| 12:15 PM 12/17 | 6.09 | 9.09 |
| 12:00 PM 12/17 | 6.07 | 9.07 |
No flood impact data available for this location.
Historical crest information is not available.
Data provided by the National Weather Service.
