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San Joaquin River at Patterson

Critical Stages
48' - Action
54.7' - Flood
57.3' - Moderate
58.3' - Major

Latest Observation

Updated: 3:00 AM PST 12/16/25

Status: No Flooding

Stage: 31.61 ft

Flow: 0.619 kcfs

Forecast

TimeStage (ft)Flow (kcfs)
5 AM 12/16 31.6 0.616
6 AM 12/16 31.6 0.616
7 AM 12/16 31.6 0.616
8 AM 12/16 31.6 0.616
9 AM 12/16 31.6 0.616
10 AM 12/16 31.6 0.616
11 AM 12/16 31.6 0.616
12 PM 12/16 31.6 0.616
1 PM 12/16 31.6 0.616
2 PM 12/16 31.6 0.616
3 PM 12/16 31.6 0.616
4 PM 12/16 31.6 0.616
5 PM 12/16 31.6 0.616
6 PM 12/16 31.6 0.616
7 PM 12/16 31.59 0.613
8 PM 12/16 31.59 0.613
9 PM 12/16 31.59 0.613
10 PM 12/16 31.59 0.613
11 PM 12/16 31.59 0.613
12 AM 12/17 31.59 0.613
1 AM 12/17 31.59 0.613
2 AM 12/17 31.59 0.613
3 AM 12/17 31.59 0.613
4 AM 12/17 31.59 0.613
5 AM 12/17 31.59 0.613
6 AM 12/17 31.59 0.613
7 AM 12/17 31.58 0.61
8 AM 12/17 31.58 0.61
9 AM 12/17 31.58 0.61
10 AM 12/17 31.58 0.61
11 AM 12/17 31.58 0.61
12 PM 12/17 31.58 0.61
1 PM 12/17 31.58 0.61
2 PM 12/17 31.58 0.61
3 PM 12/17 31.58 0.61
4 PM 12/17 31.57 0.607
5 PM 12/17 31.57 0.607
6 PM 12/17 31.57 0.607
7 PM 12/17 31.57 0.607
8 PM 12/17 31.57 0.607
9 PM 12/17 31.57 0.607
10 PM 12/17 31.57 0.607
11 PM 12/17 31.57 0.607
12 AM 12/18 31.57 0.607
1 AM 12/18 31.57 0.607
2 AM 12/18 31.57 0.607
3 AM 12/18 31.57 0.607
4 AM 12/18 31.56 0.604
5 AM 12/18 31.56 0.604
6 AM 12/18 31.56 0.604
7 AM 12/18 31.56 0.604
8 AM 12/18 31.56 0.604
9 AM 12/18 31.56 0.604
10 AM 12/18 31.56 0.604
11 AM 12/18 31.56 0.604
12 PM 12/18 31.56 0.604
1 PM 12/18 31.56 0.604
2 PM 12/18 31.56 0.604
3 PM 12/18 31.55 0.601
4 PM 12/18 31.55 0.601
5 PM 12/18 31.55 0.601
6 PM 12/18 31.55 0.601
7 PM 12/18 31.55 0.601
8 PM 12/18 31.55 0.601
9 PM 12/18 31.55 0.601
10 PM 12/18 31.55 0.601
11 PM 12/18 31.55 0.601
12 AM 12/19 31.55 0.601
1 AM 12/19 31.55 0.601
2 AM 12/19 31.55 0.601
3 AM 12/19 31.55 0.601
4 AM 12/19 31.55 0.601
5 AM 12/19 31.55 0.601
6 AM 12/19 31.54 0.598
7 AM 12/19 31.54 0.598
8 AM 12/19 31.54 0.598
9 AM 12/19 31.54 0.598
10 AM 12/19 31.54 0.598
11 AM 12/19 31.54 0.598
12 PM 12/19 31.54 0.598
1 PM 12/19 31.54 0.598
2 PM 12/19 31.54 0.598
3 PM 12/19 31.54 0.598
4 PM 12/19 31.54 0.598
5 PM 12/19 31.54 0.598
6 PM 12/19 31.54 0.598
7 PM 12/19 31.54 0.598
8 PM 12/19 31.53 0.595
9 PM 12/19 31.53 0.595
10 PM 12/19 31.53 0.595
11 PM 12/19 31.53 0.595
12 AM 12/20 31.53 0.595
1 AM 12/20 31.53 0.595
2 AM 12/20 31.53 0.595
3 AM 12/20 31.53 0.595
4 AM 12/20 31.53 0.595
TimeStage (ft)Flow (kcfs)
3:45 AM 12/16 31.61 0.619
3:30 AM 12/16 31.61 0.619
3:15 AM 12/16 31.61 0.619
3:00 AM 12/16 31.61 0.619
2:45 AM 12/16 31.6 0.616
2:30 AM 12/16 31.6 0.616
2:15 AM 12/16 31.6 0.616
2:00 AM 12/16 31.59 0.613
1:45 AM 12/16 31.59 0.613
1:30 AM 12/16 31.59 0.613
1:15 AM 12/16 31.59 0.613
1:00 AM 12/16 31.59 0.613
12:45 AM 12/16 31.6 0.616
12:30 AM 12/16 31.6 0.616
12:15 AM 12/16 31.6 0.616
12:00 AM 12/16 31.6 0.616
11:45 PM 12/15 31.61 0.619
11:30 PM 12/15 31.61 0.619
11:15 PM 12/15 31.61 0.619
11:00 PM 12/15 31.61 0.619
10:45 PM 12/15 31.61 0.619
10:30 PM 12/15 31.61 0.619
10:15 PM 12/15 31.61 0.619
10:00 PM 12/15 31.61 0.619
9:45 PM 12/15 31.6 0.616
9:30 PM 12/15 31.6 0.616
9:15 PM 12/15 31.59 0.613
9:00 PM 12/15 31.59 0.613
8:45 PM 12/15 31.59 0.613
8:30 PM 12/15 31.6 0.616
Hydrograph for San Joaquin River at Patterson
58.3' - Stages above 58.3 feet result in flooding outside the levee. Top of levee.
DateStage (ft)
Mar 27, 2023 52.24
Feb 22, 2017 51.71
Mar 4, 1983 51.26
Apr 10, 2006 50.97
Feb 25, 1980 50.57
Jun 13, 1938 50.5
Mar 18, 1986 49.65
Mar 31, 2011 49.63
Feb 11, 1998 49.16
Apr 29, 1978 48.89
Jan 6, 1965 48.66
Jan 3, 1984 47.42
Feb 16, 1973 46.12
Jun 2, 2005 45.58
Jun 5, 2019 45.31
Feb 21, 2019 44.92
Feb 26, 1979 43.16
Mar 9, 1970 42.65
Jan 3, 1966 42.61
Mar 7, 2024 41.64

Data provided by the National Weather Service.