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Sacramento-San Joaquin Delta at Mallard Island
Critical Stages
Action
Flood
Moderate
Major
Latest Observation
Updated: 9:45 AM PST 12/17/25
Status: Not Defined
Stage: 5.46 ft
Flow: 8.47 kcfs
Forecast
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 11 AM 12/17 | 5.9 | 8.9 |
| 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) |
|---|---|---|
| 10:15 AM 12/17 | 5.69 | 8.7 |
| 10:00 AM 12/17 | 5.6 | 8.61 |
| 9:45 AM 12/17 | 5.46 | 8.47 |
| 9:30 AM 12/17 | 5.32 | 8.33 |
| 9:15 AM 12/17 | 5.18 | 8.18 |
| 9:00 AM 12/17 | 5.03 | 8.03 |
| 8:45 AM 12/17 | 4.86 | 7.87 |
| 8:30 AM 12/17 | 4.69 | 7.7 |
| 8:15 AM 12/17 | 4.5 | 7.51 |
| 8:00 AM 12/17 | 4.29 | 7.3 |
| 7:45 AM 12/17 | 4.07 | 7.07 |
| 7:30 AM 12/17 | 3.9 | 6.91 |
| 7:15 AM 12/17 | 3.77 | 6.78 |
| 7:00 AM 12/17 | 3.61 | 6.63 |
| 6:45 AM 12/17 | 3.52 | 6.54 |
| 6:30 AM 12/17 | 3.41 | 6.43 |
| 6:15 AM 12/17 | 3.34 | 6.36 |
| 6:00 AM 12/17 | 3.27 | 6.28 |
| 5:45 AM 12/17 | 3.27 | 6.28 |
| 5:30 AM 12/17 | 3.28 | 6.29 |
| 5:15 AM 12/17 | 3.33 | 6.35 |
| 5:00 AM 12/17 | 3.39 | 6.41 |
| 4:45 AM 12/17 | 3.5 | 6.52 |
| 4:30 AM 12/17 | 3.61 | 6.63 |
| 4:15 AM 12/17 | 3.71 | 6.72 |
| 4:00 AM 12/17 | 3.81 | 6.82 |
| 3:45 AM 12/17 | 3.95 | 6.95 |
| 3:30 AM 12/17 | 4.07 | 7.07 |
| 3:15 AM 12/17 | 4.14 | 7.15 |
| 3:00 AM 12/17 | 4.24 | 7.25 |
No flood impact data available for this location.
Historical crest information is not available.
Data provided by the National Weather Service.
