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Sacramento-San Joaquin Delta at Mallard Island
Critical Stages
Action
Flood
Moderate
Major
Latest Observation
Updated: 4:45 PM PST 12/15/25
Status: Not Defined
Stage: 1.95 ft
Flow: 4.96 kcfs
Forecast
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 7 PM 12/15 | 1.1 | 4.12 |
| 12 AM 12/16 | 4.2 | 7.21 |
| 5 AM 12/16 | 2.6 | 5.63 |
| 11 AM 12/16 | 5.8 | 8.81 |
| 8 PM 12/16 | 0.9 | -999 |
| 1 AM 12/17 | 4.3 | 7.31 |
| 5 AM 12/17 | 3 | 6 |
| 11 AM 12/17 | 5.8 | 8.81 |
| 9 PM 12/17 | 0.8 | -999 |
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 4:45 PM 12/15 | 1.95 | 4.96 |
| 4:30 PM 12/15 | 2.06 | 5.07 |
| 4:15 PM 12/15 | 2.14 | 5.15 |
| 4:00 PM 12/15 | 2.32 | 5.35 |
| 3:45 PM 12/15 | 2.51 | 5.54 |
| 3:30 PM 12/15 | 2.62 | 5.65 |
| 3:15 PM 12/15 | 2.82 | 5.84 |
| 3:00 PM 12/15 | 2.88 | 5.89 |
| 2:45 PM 12/15 | 3.14 | 6.15 |
| 2:30 PM 12/15 | 3.27 | 6.28 |
| 2:15 PM 12/15 | 3.51 | 6.53 |
| 2:00 PM 12/15 | 3.75 | 6.76 |
| 1:45 PM 12/15 | 3.97 | 6.97 |
| 1:30 PM 12/15 | 4.19 | 7.2 |
| 1:15 PM 12/15 | 4.44 | 7.45 |
| 1:00 PM 12/15 | 4.69 | 7.7 |
| 12:45 PM 12/15 | 4.89 | 7.89 |
| 12:30 PM 12/15 | 5.11 | 8.11 |
| 12:15 PM 12/15 | 5.27 | 8.28 |
| 12:00 PM 12/15 | 5.4 | 8.41 |
| 11:45 AM 12/15 | 5.5 | 8.51 |
| 11:30 AM 12/15 | 5.58 | 8.59 |
| 11:15 AM 12/15 | 5.61 | 8.62 |
| 11:00 AM 12/15 | 5.62 | 8.63 |
| 10:45 AM 12/15 | 5.63 | 8.64 |
| 10:30 AM 12/15 | 5.58 | 8.59 |
| 10:15 AM 12/15 | 5.55 | 8.56 |
| 10:00 AM 12/15 | 5.48 | 8.49 |
| 9:45 AM 12/15 | 5.39 | 8.4 |
| 9:30 AM 12/15 | 5.28 | 8.29 |
No flood impact data available for this location.
Historical crest information is not available.
Data provided by the National Weather Service.
