Sacramento-San Joaquin Delta at Mallard Island
Critical Stages
Action
Flood
Moderate
Major
Latest Observation
Updated: 1:00 AM PST 12/18/25
Status: Not Defined
Stage: 4.34 ft
Flow: 7.35 kcfs
Forecast
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 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) |
|---|---|---|
| 1:15 AM 12/18 | 4.41 | 7.42 |
| 1:00 AM 12/18 | 4.34 | 7.35 |
| 12:45 AM 12/18 | 4.25 | 7.26 |
| 12:30 AM 12/18 | 4.16 | 7.17 |
| 12:15 AM 12/18 | 4.06 | 7.06 |
| 12:00 AM 12/18 | 3.92 | 6.92 |
| 11:45 PM 12/17 | 3.77 | 6.78 |
| 11:30 PM 12/17 | 3.59 | 6.61 |
| 11:15 PM 12/17 | 3.38 | 6.4 |
| 11:00 PM 12/17 | 3.13 | 6.14 |
| 10:45 PM 12/17 | 2.87 | 5.88 |
| 10:30 PM 12/17 | 2.61 | 5.64 |
| 10:15 PM 12/17 | 2.32 | 5.35 |
| 10:00 PM 12/17 | 2.05 | 5.06 |
| 9:45 PM 12/17 | 1.77 | 4.81 |
| 9:30 PM 12/17 | 1.49 | 4.55 |
| 9:15 PM 12/17 | 1.32 | 4.37 |
| 9:00 PM 12/17 | 1.19 | 4.23 |
| 8:45 PM 12/17 | 1.09 | 4.11 |
| 8:30 PM 12/17 | 1.11 | 4.14 |
| 8:15 PM 12/17 | 1.09 | 4.11 |
| 8:00 PM 12/17 | 1.11 | 4.14 |
| 7:45 PM 12/17 | 1.16 | 4.2 |
| 7:30 PM 12/17 | 1.32 | 4.37 |
| 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 |
No flood impact data available for this location.
Historical crest information is not available.
Data provided by the National Weather Service.
