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SAN JOAQUIN RIVER - PATTERSON (PATC1)
| Latitude: 37.49º N | Longitude: 121.08º W | Elevation: 97 Feet | | Forecast Type: Official Location |
| Location: Stanislaus County in California | Bulletin Group: San Joaquin | River Group: San Joaquin |
| Issuance Time: | Mar 29 2026 at 7:48 AM PDT | Next Issuance: | Mar 30 2026 at 9:00 AM PDT
| |
| Action/Monitor: 48.0 Feet | Minor Flood: 54.7 Feet | Moderate Flood: 57.3 Feet | Major Flood: 58.3 Feet |
# Tabular Observed and Forecast Hydrograph Information
#
# Location: San Joaquin River - Patterson (PATC1)
#
# File Generation Time: 03/29/2026 at 07:48 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 03/24/2026 at 10:00 AM PDT
# Maximum Observed Stage: 33.01 Feet
# Maximum Observed Flow: 1154 cfs
#
# Earliest Date & Time of Maximum Forecast: 03/31/2026 at 01:00 AM PDT
# Maximum Forecast Stage: 32.88 Feet
# Maximum Forecast Flow: 1103 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
03/24/2026 07 AM PDT 33.01 1154 Normal
03/24/2026 08 AM PDT 33.00 1150 - Normal
03/24/2026 09 AM PDT 33.00 1150 0 Normal
03/24/2026 10 AM PDT 33.01 1154 + Normal
03/24/2026 11 AM PDT 33.00 1150 - Normal
03/24/2026 12 PM PDT 32.99 1146 - Normal
03/24/2026 01 PM PDT 32.99 1146 0 Normal
03/24/2026 02 PM PDT 32.97 1138 - Normal
03/24/2026 03 PM PDT 32.96 1134 - Normal
03/24/2026 04 PM PDT 32.97 1138 + Normal
03/24/2026 05 PM PDT 32.96 1134 - Normal
03/24/2026 06 PM PDT 32.94 1126 - Normal
03/24/2026 07 PM PDT 32.93 1122 - Normal
03/24/2026 08 PM PDT 32.93 1122 0 Normal
03/24/2026 09 PM PDT 32.93 1122 0 Normal
03/24/2026 10 PM PDT 32.92 1118 - Normal
03/24/2026 11 PM PDT 32.91 1114 - Normal
03/25/2026 12 AM PDT 32.91 1114 0 Normal
03/25/2026 01 AM PDT 32.89 1106 - Normal
03/25/2026 02 AM PDT 32.90 1110 + Normal
03/25/2026 03 AM PDT 32.88 1103 - Normal
03/25/2026 04 AM PDT 32.89 1106 + Normal
03/25/2026 05 AM PDT 32.88 1103 - Normal
03/25/2026 06 AM PDT 32.87 1099 - Normal
03/25/2026 07 AM PDT 32.86 1095 - Normal
03/25/2026 08 AM PDT 32.86 1095 0 Normal
03/25/2026 09 AM PDT 32.87 1099 + Normal
03/25/2026 10 AM PDT 32.87 1099 0 Normal
03/25/2026 11 AM PDT 32.88 1103 + Normal
03/25/2026 12 PM PDT 32.89 1106 + Normal
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 32.82 1079 0 Normal
03/29/2026 07 AM PDT 32.82 1079 0 Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
03/29/2026 08 AM PDT 32.82 1079 Normal
03/29/2026 09 AM PDT 32.82 1079 0 Normal
03/29/2026 10 AM PDT 32.82 1079 0 Normal
03/29/2026 11 AM PDT 32.82 1079 0 Normal
03/29/2026 12 PM PDT 32.82 1079 0 Normal
03/29/2026 01 PM PDT 32.82 1079 0 Normal
03/29/2026 02 PM PDT 32.82 1079 0 Normal
03/29/2026 03 PM PDT 32.82 1079 0 Normal
03/29/2026 04 PM PDT 32.82 1079 0 Normal
03/29/2026 05 PM PDT 32.82 1079 0 Normal
03/29/2026 06 PM PDT 32.82 1079 0 Normal
03/29/2026 07 PM PDT 32.82 1079 0 Normal
03/29/2026 08 PM PDT 32.82 1079 0 Normal
03/29/2026 09 PM PDT 32.83 1083 + Normal
03/29/2026 10 PM PDT 32.83 1083 0 Normal
03/29/2026 11 PM PDT 32.83 1083 0 Normal
03/30/2026 12 AM PDT 32.83 1083 0 Normal
03/30/2026 01 AM PDT 32.83 1083 0 Normal
03/30/2026 02 AM PDT 32.84 1087 + Normal
03/30/2026 03 AM PDT 32.84 1087 0 Normal
03/30/2026 04 AM PDT 32.84 1087 0 Normal
03/30/2026 05 AM PDT 32.84 1087 0 Normal
03/30/2026 06 AM PDT 32.84 1087 0 Normal
03/30/2026 07 AM PDT 32.84 1087 0 Normal
03/30/2026 08 AM PDT 32.85 1091 + Normal
03/30/2026 09 AM PDT 32.85 1091 0 Normal
03/30/2026 10 AM PDT 32.85 1091 0 Normal
03/30/2026 11 AM PDT 32.85 1091 0 Normal
03/30/2026 12 PM PDT 32.85 1091 0 Normal
03/30/2026 01 PM PDT 32.86 1095 + Normal
03/30/2026 02 PM PDT 32.86 1095 0 Normal
03/30/2026 03 PM PDT 32.86 1095 0 Normal
03/30/2026 04 PM PDT 32.86 1095 0 Normal
03/30/2026 05 PM PDT 32.86 1095 0 Normal
03/30/2026 06 PM PDT 32.87 1099 + Normal
03/30/2026 07 PM PDT 32.87 1099 0 Normal
03/30/2026 08 PM PDT 32.87 1099 0 Normal
03/30/2026 09 PM PDT 32.87 1099 0 Normal
03/30/2026 10 PM PDT 32.87 1099 0 Normal
03/30/2026 11 PM PDT 32.87 1099 0 Normal
03/31/2026 12 AM PDT 32.87 1099 0 Normal
03/31/2026 01 AM PDT 32.88 1103 + Normal
03/31/2026 02 AM PDT 32.88 1103 0 Normal
03/31/2026 03 AM PDT 32.88 1103 0 Normal
03/31/2026 04 AM PDT 32.88 1103 0 Normal
03/31/2026 05 AM PDT 32.88 1103 0 Normal
03/31/2026 06 AM PDT 32.88 1103 0 Normal
03/31/2026 07 AM PDT 32.88 1103 0 Normal
03/31/2026 08 AM PDT 32.88 1103 0 Normal
03/31/2026 09 AM PDT 32.88 1103 0 Normal
03/31/2026 10 AM PDT 32.88 1103 0 Normal
03/31/2026 11 AM PDT 32.88 1103 0 Normal
03/31/2026 12 PM PDT 32.88 1103 0 Normal
03/31/2026 01 PM PDT 32.88 1103 0 Normal
03/31/2026 02 PM PDT 32.88 1103 0 Normal
03/31/2026 03 PM PDT 32.88 1103 0 Normal
03/31/2026 04 PM PDT 32.88 1103 0 Normal
03/31/2026 05 PM PDT 32.88 1103 0 Normal
03/31/2026 06 PM PDT 32.87 1099 - Normal
03/31/2026 07 PM PDT 32.87 1099 0 Normal
03/31/2026 08 PM PDT 32.87 1099 0 Normal
03/31/2026 09 PM PDT 32.87 1099 0 Normal
03/31/2026 10 PM PDT 32.87 1099 0 Normal
03/31/2026 11 PM PDT 32.87 1099 0 Normal
04/01/2026 12 AM PDT 32.87 1099 0 Normal
04/01/2026 01 AM PDT 32.87 1099 0 Normal
04/01/2026 02 AM PDT 32.87 1099 0 Normal
04/01/2026 03 AM PDT 32.87 1099 0 Normal
04/01/2026 04 AM PDT 32.87 1099 0 Normal
04/01/2026 05 AM PDT 32.87 1099 0 Normal
04/01/2026 06 AM PDT 32.87 1099 0 Normal
04/01/2026 07 AM PDT 32.87 1099 0 Normal
04/01/2026 08 AM PDT 32.87 1099 0 Normal
04/01/2026 09 AM PDT 32.87 1099 0 Normal
04/01/2026 10 AM PDT 32.87 1099 0 Normal
04/01/2026 11 AM PDT 32.87 1099 0 Normal
04/01/2026 12 PM PDT 32.86 1095 - Normal
04/01/2026 01 PM PDT 32.86 1095 0 Normal
04/01/2026 02 PM PDT 32.86 1095 0 Normal
04/01/2026 03 PM PDT 32.86 1095 0 Normal
04/01/2026 04 PM PDT 32.86 1095 0 Normal
04/01/2026 05 PM PDT 32.86 1095 0 Normal
04/01/2026 06 PM PDT 32.86 1095 0 Normal
04/01/2026 07 PM PDT 32.86 1095 0 Normal
04/01/2026 08 PM PDT 32.86 1095 0 Normal
04/01/2026 09 PM PDT 32.86 1095 0 Normal
04/01/2026 10 PM PDT 32.86 1095 0 Normal
04/01/2026 11 PM PDT 32.86 1095 0 Normal
04/02/2026 12 AM PDT 32.86 1095 0 Normal
04/02/2026 01 AM PDT 32.86 1095 0 Normal
04/02/2026 02 AM PDT 32.86 1095 0 Normal
04/02/2026 03 AM PDT 32.86 1095 0 Normal
04/02/2026 04 AM PDT 32.86 1095 0 Normal
04/02/2026 05 AM PDT 32.86 1095 0 Normal
04/02/2026 06 AM PDT 32.86 1095 0 Normal
04/02/2026 07 AM PDT 32.86 1095 0 Normal
04/02/2026 08 AM PDT 32.86 1095 0 Normal
04/02/2026 09 AM PDT 32.86 1095 0 Normal
04/02/2026 10 AM PDT 32.86 1095 0 Normal
04/02/2026 11 AM PDT 32.86 1095 0 Normal
04/02/2026 12 PM PDT 32.86 1095 0 Normal
04/02/2026 01 PM PDT 32.86 1095 0 Normal
04/02/2026 02 PM PDT 32.86 1095 0 Normal
04/02/2026 03 PM PDT 32.86 1095 0 Normal
04/02/2026 04 PM PDT 32.86 1095 0 Normal
04/02/2026 05 PM PDT 32.87 1099 + Normal
04/02/2026 06 PM PDT 32.87 1099 0 Normal
04/02/2026 07 PM PDT 32.87 1099 0 Normal
04/02/2026 08 PM PDT 32.87 1099 0 Normal
04/02/2026 09 PM PDT 32.87 1099 0 Normal
04/02/2026 10 PM PDT 32.87 1099 0 Normal
04/02/2026 11 PM PDT 32.87 1099 0 Normal
04/03/2026 12 AM PDT 32.87 1099 0 Normal
04/03/2026 01 AM PDT 32.87 1099 0 Normal
04/03/2026 02 AM PDT 32.87 1099 0 Normal
04/03/2026 03 AM PDT 32.87 1099 0 Normal
04/03/2026 04 AM PDT 32.87 1099 0 Normal
04/03/2026 05 AM PDT 32.87 1099 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.
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