| SAN JOAQUIN RIVER - VERNALIS (VNSC1) | ||
| Latitude: 37.68º N | Longitude: 121.27º W | Elevation: 35 Feet |
| Location: San Joaquin County in CA | ||
| River Group: San Joaquin | ||
| Forecast Issued: | Jun 16 2025 at 6:03 AM PDT | Next Issuance: | Jun 17 2025 at 9:00 AM PDT |
| Action/ Monitor: 24.5 Ft | Minor Flood: 29.0 Ft | Moderate Flood: 32.0 Ft | Major Flood: 37.3 Ft |
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Historical Stage/Flow Data |
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|
Water Year
|
Peak Discharge (cfs)
|
Stage (feet)
|
Date
|
| Most Recent 5 Years | |||
2024* |
10,300 |
18.12 |
Mar 6, 2024 |
2023* |
34,400 |
29.82 |
Mar 19, 2023 |
2022* |
2,600 |
10.83 |
Dec 29, 2021 |
2021* |
2,470 |
10.76 |
Jan 31, 2021 |
2020* |
6,130 |
14.29 |
Dec 9, 2019 |
| Historical High Stage/Flow Events (Period of Record - Jul 1922 to Present) - Ranked by Flow | |||
1951* |
79,000 |
27.75 |
Dec 09, 1950 |
1997* |
75,600 |
34.88 |
Jan 05, 1997 |
1969* |
52,600 |
34.55 |
Jan 27, 1969 |
1938* |
51,200 |
26.64 |
Mar 16, 1938 |
1956* |
50,900 |
26.89 |
Dec 25, 1955 |
1983* |
45,100 |
31.49 |
Mar 07, 1983 |
| * Discharge affected by regulation or diversion | |||
| Location Photographs | ||
| ESRI™ Locator Map |
| Flood Impacts | |
| 37.29 Feet | Stages above 37.3 feet results in flooding outside the levees. Top of levee. |
| 29.6 Feet | Homes along east bank of river on Airport Court in Manteca experience flooding. |
| 26.0 Feet | Severe seepage occurs outside the levees. The area covered by seepage will increase as the river stage rises. |
| 24.5 Feet | Monitor Stage - water reaches the toe of levee. |
| 21.0 Feet | Seepage begins into crop area outside of levees. |