SAN JOAQUIN RIVER - PATTERSON (PATC1)
Latitude: 37.49º NLongitude: 121.08º WElevation: 97 FeetForecast Type: Official Location
Location: Stanislaus County in CaliforniaBulletin Group: San JoaquinRiver Group: San Joaquin
Issuance Time: Mar 30 2026 at 1:38 PM PDTNext Issuance: Mar 31 2026 at 9:00 AM PDT
Action/Monitor: 48.0 FeetMinor Flood: 54.7 FeetModerate Flood: 57.3 FeetMajor Flood: 58.3 Feet

# Tabular Observed and Forecast Hydrograph Information
#
# Location: San Joaquin River - Patterson (PATC1)
#
# File Generation Time:  03/30/2026 at 01:39 PM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  03/26/2026 at 07:00 PM PDT
# Maximum Observed Stage:                       32.91 Feet
# Maximum Observed Flow:                        1114 cfs
#
# Earliest Date & Time of Maximum Forecast:     03/31/2026 at 11:00 AM PDT
# Maximum Forecast Stage:                       32.98 Feet
# Maximum Forecast Flow:                        1142 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  03/25/2026 01 PM PDT           32.91           1114                        Normal
  03/25/2026 02 PM PDT           32.91           1114         0              Normal
  03/25/2026 03 PM PDT           32.91           1114         0              Normal
  03/25/2026 04 PM PDT           32.89           1106         -              Normal
  03/25/2026 05 PM PDT           32.89           1106         0              Normal
  03/25/2026 06 PM PDT           32.90           1110         +              Normal
  03/25/2026 07 PM PDT           32.89           1106         -              Normal
  03/25/2026 08 PM PDT           32.87           1099         -              Normal
  03/25/2026 09 PM PDT           32.86           1095         -              Normal
  03/25/2026 10 PM PDT           32.84           1087         -              Normal
  03/25/2026 11 PM PDT           32.84           1087         0              Normal
  03/26/2026 12 AM PDT           32.84           1087         0              Normal
  03/26/2026 01 AM PDT           32.82           1079         -              Normal
  03/26/2026 02 AM PDT           32.80           1071         -              Normal
  03/26/2026 03 AM PDT           32.81           1075         +              Normal
  03/26/2026 04 AM PDT           32.80           1071         -              Normal
  03/26/2026 05 AM PDT           32.80           1071         0              Normal
  03/26/2026 06 AM PDT           32.80           1071         0              Normal
  03/26/2026 07 AM PDT           32.79           1067         -              Normal
  03/26/2026 08 AM PDT           32.80           1071         +              Normal
  03/26/2026 09 AM PDT           32.84           1087         +              Normal
  03/26/2026 10 AM PDT           32.84           1087         0              Normal
  03/26/2026 11 AM PDT           32.86           1095         +              Normal
  03/26/2026 12 PM PDT           32.89           1106         +              Normal
  03/26/2026 01 PM PDT           32.88           1103         -              Normal
  03/26/2026 02 PM PDT           32.89           1106         +              Normal
  03/26/2026 03 PM PDT           32.90           1110         +              Normal
  03/26/2026 04 PM PDT           32.90           1110         0              Normal
  03/26/2026 05 PM PDT           32.90           1110         0              Normal
  03/26/2026 06 PM PDT           32.89           1106         -              Normal
  03/26/2026 07 PM PDT           32.91           1114         +              Normal
  03/26/2026 08 PM PDT           32.90           1110         -              Normal
  03/26/2026 09 PM PDT           32.89           1106         -              Normal
  03/26/2026 10 PM PDT           32.89           1106         0              Normal
  03/26/2026 11 PM PDT           32.87           1099         -              Normal
  03/27/2026 12 AM PDT           32.86           1095         -              Normal
  03/27/2026 01 AM PDT           32.86           1095         0              Normal
  03/27/2026 02 AM PDT           32.85           1091         -              Normal
  03/27/2026 03 AM PDT           32.84           1087         -              Normal
  03/27/2026 04 AM PDT           32.83           1083         -              Normal
  03/27/2026 05 AM PDT           32.83           1083         0              Normal
  03/27/2026 06 AM PDT           32.84           1087         +              Normal
  03/27/2026 07 AM PDT           32.82           1079         -              Normal
  03/27/2026 08 AM PDT           32.82           1079         0              Normal
  03/27/2026 09 AM PDT           32.82           1079         0              Normal
  03/27/2026 10 AM PDT           32.83           1083         +              Normal
  03/27/2026 11 AM PDT           32.83           1083         0              Normal
  03/27/2026 12 PM PDT           32.85           1091         +              Normal
  03/27/2026 01 PM PDT           32.85           1091         0              Normal
  03/27/2026 02 PM PDT           32.84           1087         -              Normal
  03/27/2026 03 PM PDT           32.85           1091         +              Normal
  03/27/2026 04 PM PDT           32.84           1087         -              Normal
  03/27/2026 05 PM PDT           32.84           1087         0              Normal
  03/27/2026 06 PM PDT           32.82           1079         -              Normal
  03/27/2026 07 PM PDT           32.82           1079         0              Normal
  03/27/2026 08 PM PDT           32.81           1075         -              Normal
  03/27/2026 09 PM PDT           32.81           1075         0              Normal
  03/27/2026 10 PM PDT           32.80           1071         -              Normal
  03/27/2026 11 PM PDT           32.79           1067         -              Normal
  03/28/2026 12 AM PDT           32.79           1067         0              Normal
  03/28/2026 01 AM PDT           32.77           1060         -              Normal
  03/28/2026 02 AM PDT           32.78           1064         +              Normal
  03/28/2026 03 AM PDT           32.77           1060         -              Normal
  03/28/2026 04 AM PDT           32.77           1060         0              Normal
  03/28/2026 05 AM PDT           32.77           1060         0              Normal
  03/28/2026 06 AM PDT           32.77           1060         0              Normal
  03/28/2026 07 AM PDT           32.76           1056         -              Normal
  03/28/2026 08 AM PDT           32.77           1060         +              Normal
  03/28/2026 09 AM PDT           32.77           1060         0              Normal
  03/28/2026 10 AM PDT           32.77           1060         0              Normal
  03/28/2026 11 AM PDT           32.77           1060         0              Normal
  03/28/2026 12 PM PDT           32.79           1067         +              Normal
  03/28/2026 01 PM PDT           32.79           1067         0              Normal
  03/28/2026 02 PM PDT           32.80           1071         +              Normal
  03/28/2026 03 PM PDT           32.81           1075         +              Normal
  03/28/2026 04 PM PDT           32.81           1075         0              Normal
  03/28/2026 05 PM PDT           32.82           1079         +              Normal
  03/28/2026 06 PM PDT           32.85           1091         +              Normal
  03/28/2026 07 PM PDT           32.83           1083         -              Normal
  03/28/2026 08 PM PDT           32.82           1079         -              Normal
  03/28/2026 09 PM PDT           32.83           1083         +              Normal
  03/28/2026 10 PM PDT           32.83           1083         0              Normal
  03/28/2026 11 PM PDT           32.84           1087         +              Normal
  03/29/2026 12 AM PDT           32.84           1087         0              Normal
  03/29/2026 01 AM PDT           32.82           1079         -              Normal
  03/29/2026 02 AM PDT           32.82           1079         0              Normal
  03/29/2026 03 AM PDT           32.82           1079         0              Normal
  03/29/2026 04 AM PDT           32.83           1083         +              Normal
  03/29/2026 05 AM PDT           32.82           1079         -              Normal
  03/29/2026 06 AM PDT           32.81           1075         -              Normal
  03/29/2026 07 AM PDT           32.81           1075         0              Normal
  03/29/2026 08 AM PDT           32.82           1079         +              Normal
  03/29/2026 09 AM PDT           32.84           1087         +              Normal
  03/29/2026 10 AM PDT           32.85           1091         +              Normal
  03/29/2026 11 AM PDT           32.84           1087         -              Normal
  03/29/2026 12 PM PDT           32.84           1087         0              Normal
  03/29/2026 01 PM PDT           32.85           1091         +              Normal
  03/29/2026 02 PM PDT           32.85           1091         0              Normal
  03/29/2026 03 PM PDT           32.84           1087         -              Normal
  03/29/2026 04 PM PDT           32.84           1087         0              Normal
  03/29/2026 05 PM PDT           32.83           1083         -              Normal
  03/29/2026 06 PM PDT           32.82           1079         -              Normal
  03/29/2026 07 PM PDT           32.81           1075         -              Normal
  03/29/2026 08 PM PDT           32.80           1071         -              Normal
  03/29/2026 09 PM PDT           32.80           1071         0              Normal
  03/29/2026 10 PM PDT           32.80           1071         0              Normal
  03/29/2026 11 PM PDT           32.80           1071         0              Normal
  03/30/2026 12 AM PDT           32.80           1071         0              Normal
  03/30/2026 01 AM PDT           32.80           1071         0              Normal
  03/30/2026 02 AM PDT           32.80           1071         0              Normal
  03/30/2026 03 AM PDT           32.81           1075         +              Normal
  03/30/2026 04 AM PDT           32.80           1071         -              Normal
  03/30/2026 05 AM PDT           32.82           1079         +              Normal
  03/30/2026 06 AM PDT           32.83           1083         +              Normal
  03/30/2026 07 AM PDT           32.82           1079         -              Normal
  03/30/2026 08 AM PDT           32.83           1083         +              Normal
  03/30/2026 09 AM PDT           32.85           1091         +              Normal
  03/30/2026 10 AM PDT           32.85           1091         0              Normal
  03/30/2026 11 AM PDT           32.87           1099         +              Normal
  03/30/2026 12 PM PDT           32.88           1103         +              Normal
  03/30/2026 01 PM PDT           32.89           1106         +              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  03/30/2026 02 PM PDT           32.90           1110                        Normal
  03/30/2026 03 PM PDT           32.91           1114         +              Normal
  03/30/2026 04 PM PDT           32.91           1114         0              Normal
  03/30/2026 05 PM PDT           32.92           1118         +              Normal
  03/30/2026 06 PM PDT           32.92           1118         0              Normal
  03/30/2026 07 PM PDT           32.92           1118         0              Normal
  03/30/2026 08 PM PDT           32.93           1122         +              Normal
  03/30/2026 09 PM PDT           32.93           1122         0              Normal
  03/30/2026 10 PM PDT           32.94           1126         +              Normal
  03/30/2026 11 PM PDT           32.94           1126         0              Normal
  03/31/2026 12 AM PDT           32.95           1130         +              Normal
  03/31/2026 01 AM PDT           32.95           1130         0              Normal
  03/31/2026 02 AM PDT           32.95           1130         0              Normal
  03/31/2026 03 AM PDT           32.96           1134         +              Normal
  03/31/2026 04 AM PDT           32.96           1134         0              Normal
  03/31/2026 05 AM PDT           32.96           1134         0              Normal
  03/31/2026 06 AM PDT           32.97           1138         +              Normal
  03/31/2026 07 AM PDT           32.97           1138         0              Normal
  03/31/2026 08 AM PDT           32.97           1138         0              Normal
  03/31/2026 09 AM PDT           32.97           1138         0              Normal
  03/31/2026 10 AM PDT           32.97           1138         0              Normal
  03/31/2026 11 AM PDT           32.98           1142         +              Normal
  03/31/2026 12 PM PDT           32.98           1142         0              Normal
  03/31/2026 01 PM PDT           32.98           1142         0              Normal
  03/31/2026 02 PM PDT           32.98           1142         0              Normal
  03/31/2026 03 PM PDT           32.98           1142         0              Normal
  03/31/2026 04 PM PDT           32.98           1142         0              Normal
  03/31/2026 05 PM PDT           32.98           1142         0              Normal
  03/31/2026 06 PM PDT           32.98           1142         0              Normal
  03/31/2026 07 PM PDT           32.98           1142         0              Normal
  03/31/2026 08 PM PDT           32.98           1142         0              Normal
  03/31/2026 09 PM PDT           32.97           1138         -              Normal
  03/31/2026 10 PM PDT           32.97           1138         0              Normal
  03/31/2026 11 PM PDT           32.97           1138         0              Normal
  04/01/2026 12 AM PDT           32.97           1138         0              Normal
  04/01/2026 01 AM PDT           32.97           1138         0              Normal
  04/01/2026 02 AM PDT           32.97           1138         0              Normal
  04/01/2026 03 AM PDT           32.97           1138         0              Normal
  04/01/2026 04 AM PDT           32.97           1138         0              Normal
  04/01/2026 05 AM PDT           32.97           1138         0              Normal
  04/01/2026 06 AM PDT           32.97           1138         0              Normal
  04/01/2026 07 AM PDT           32.96           1134         -              Normal
  04/01/2026 08 AM PDT           32.96           1134         0              Normal
  04/01/2026 09 AM PDT           32.96           1134         0              Normal
  04/01/2026 10 AM PDT           32.96           1134         0              Normal
  04/01/2026 11 AM PDT           32.96           1134         0              Normal
  04/01/2026 12 PM PDT           32.96           1134         0              Normal
  04/01/2026 01 PM PDT           32.96           1134         0              Normal
  04/01/2026 02 PM PDT           32.96           1134         0              Normal
  04/01/2026 03 PM PDT           32.96           1134         0              Normal
  04/01/2026 04 PM PDT           32.96           1134         0              Normal
  04/01/2026 05 PM PDT           32.96           1134         0              Normal
  04/01/2026 06 PM PDT           32.96           1134         0              Normal
  04/01/2026 07 PM PDT           32.96           1134         0              Normal
  04/01/2026 08 PM PDT           32.96           1134         0              Normal
  04/01/2026 09 PM PDT           32.95           1130         -              Normal
  04/01/2026 10 PM PDT           32.95           1130         0              Normal
  04/01/2026 11 PM PDT           32.95           1130         0              Normal
  04/02/2026 12 AM PDT           32.95           1130         0              Normal
  04/02/2026 01 AM PDT           32.95           1130         0              Normal
  04/02/2026 02 AM PDT           32.95           1130         0              Normal
  04/02/2026 03 AM PDT           32.95           1130         0              Normal
  04/02/2026 04 AM PDT           32.95           1130         0              Normal
  04/02/2026 05 AM PDT           32.95           1130         0              Normal
  04/02/2026 06 AM PDT           32.96           1134         +              Normal
  04/02/2026 07 AM PDT           32.96           1134         0              Normal
  04/02/2026 08 AM PDT           32.96           1134         0              Normal
  04/02/2026 09 AM PDT           32.96           1134         0              Normal
  04/02/2026 10 AM PDT           32.96           1134         0              Normal
  04/02/2026 11 AM PDT           32.96           1134         0              Normal
  04/02/2026 12 PM PDT           32.96           1134         0              Normal
  04/02/2026 01 PM PDT           32.96           1134         0              Normal
  04/02/2026 02 PM PDT           32.96           1134         0              Normal
  04/02/2026 03 PM PDT           32.96           1134         0              Normal
  04/02/2026 04 PM PDT           32.96           1134         0              Normal
  04/02/2026 05 PM PDT           32.96           1134         0              Normal
  04/02/2026 06 PM PDT           32.96           1134         0              Normal
  04/02/2026 07 PM PDT           32.96           1134         0              Normal
  04/02/2026 08 PM PDT           32.96           1134         0              Normal
  04/02/2026 09 PM PDT           32.96           1134         0              Normal
  04/02/2026 10 PM PDT           32.96           1134         0              Normal
  04/02/2026 11 PM PDT           32.96           1134         0              Normal
  04/03/2026 12 AM PDT           32.96           1134         0              Normal
  04/03/2026 01 AM PDT           32.96           1134         0              Normal
  04/03/2026 02 AM PDT           32.96           1134         0              Normal
  04/03/2026 03 AM PDT           32.96           1134         0              Normal
  04/03/2026 04 AM PDT           32.96           1134         0              Normal
  04/03/2026 05 AM PDT           32.96           1134         0              Normal
  04/03/2026 06 AM PDT           32.96           1134         0              Normal
  04/03/2026 07 AM PDT           32.96           1134         0              Normal
  04/03/2026 08 AM PDT           32.96           1134         0              Normal
  04/03/2026 09 AM PDT           32.96           1134         0              Normal
  04/03/2026 10 AM PDT           32.96           1134         0              Normal
  04/03/2026 11 AM PDT           32.96           1134         0              Normal
  04/03/2026 12 PM PDT           32.96           1134         0              Normal
  04/03/2026 01 PM PDT           32.96           1134         0              Normal
  04/03/2026 02 PM PDT           32.96           1134         0              Normal
  04/03/2026 03 PM PDT           32.96           1134         0              Normal
  04/03/2026 04 PM PDT           32.96           1134         0              Normal
  04/03/2026 05 PM PDT           32.96           1134         0              Normal
  04/03/2026 06 PM PDT           32.96           1134         0              Normal
  04/03/2026 07 PM PDT           32.96           1134         0              Normal
  04/03/2026 08 PM PDT           32.96           1134         0              Normal
  04/03/2026 09 PM PDT           32.96           1134         0              Normal
  04/03/2026 10 PM PDT           32.96           1134         0              Normal
  04/03/2026 11 PM PDT           32.96           1134         0              Normal
  04/04/2026 12 AM PDT           32.96           1134         0              Normal
  04/04/2026 01 AM PDT           32.96           1134         0              Normal
  04/04/2026 02 AM PDT           32.96           1134         0              Normal
  04/04/2026 03 AM PDT           32.96           1134         0              Normal
  04/04/2026 04 AM PDT           32.96           1134         0              Normal
  04/04/2026 05 AM PDT           32.96           1134         0              Normal
#
# NOTE 1: Stages are rounded to the nearest hundredth (.01) of a foot.
# NOTE 2: Flows are rounded to the nearest (1) cfs.
# NOTE 3: Trends are determined using hourly change in unrounded stage and flow.
# NOTE 4: Maximum Values are determined using unrounded stage and flow.