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Sacramento-San Joaquin Delta at Mallard Island
Critical Stages
Action
Flood
Moderate
Major
Latest Observation
Updated: 8:45 PM PST 12/16/25
Status: Not Defined
Stage: 1.33 ft
Flow: 4.38 kcfs
Forecast
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 1 AM 12/17 | 4.3 | 7.31 |
| 5 AM 12/17 | 3.3 | 6.31 |
| 11 AM 12/17 | 5.8 | 8.81 |
| 8 PM 12/17 | 0.8 | -999 |
| 2 AM 12/18 | 4.4 | 7.41 |
| 6 AM 12/18 | 3.5 | 6.52 |
| 11 AM 12/18 | 5.9 | 8.9 |
| 9 PM 12/18 | 0.8 | -999 |
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 9:15 PM 12/16 | 1.82 | 4.85 |
| 9:00 PM 12/16 | 1.57 | 4.63 |
| 8:45 PM 12/16 | 1.33 | 4.38 |
| 8:30 PM 12/16 | 1.17 | 4.21 |
| 8:15 PM 12/16 | 1.04 | 4.05 |
| 8:00 PM 12/16 | 0.99 | -999 |
| 7:45 PM 12/16 | 0.95 | -999 |
| 7:30 PM 12/16 | 1 | 4 |
| 7:15 PM 12/16 | 1.02 | 4.03 |
| 7:00 PM 12/16 | 1.09 | 4.11 |
| 6:45 PM 12/16 | 1.18 | 4.22 |
| 6:30 PM 12/16 | 1.3 | 4.35 |
| 6:15 PM 12/16 | 1.4 | 4.46 |
| 6:00 PM 12/16 | 1.53 | 4.59 |
| 5:45 PM 12/16 | 1.65 | 4.7 |
| 5:30 PM 12/16 | 1.78 | 4.82 |
| 5:15 PM 12/16 | 1.9 | 4.92 |
| 5:00 PM 12/16 | 2.1 | 5.11 |
| 4:45 PM 12/16 | 2.2 | 5.22 |
| 4:30 PM 12/16 | 2.35 | 5.38 |
| 4:15 PM 12/16 | 2.5 | 5.53 |
| 4:00 PM 12/16 | 2.66 | 5.68 |
| 3:45 PM 12/16 | 2.83 | 5.84 |
| 3:30 PM 12/16 | 2.94 | 5.95 |
| 3:15 PM 12/16 | 3.17 | 6.18 |
| 3:00 PM 12/16 | 3.32 | 6.33 |
| 2:45 PM 12/16 | 3.54 | 6.56 |
| 2:30 PM 12/16 | 3.85 | 6.86 |
| 2:15 PM 12/16 | 4.03 | 7.03 |
| 2:00 PM 12/16 | 4.28 | 7.29 |
No flood impact data available for this location.
Historical crest information is not available.
Data provided by the National Weather Service.
