SAN JOAQUIN RIVER - PATTERSON (PATC1)
Latitude: 37.49º NLongitude: 121.08º WElevation: 97 Feet
Location: Stanislaus County in CaliforniaBulletin Group: San JoaquinRiver Group: San Joaquin
Issuance Time: Dec 25 2025 at 2:10 PM PSTNext Issuance: Dec 26 2025 at 9:00 AM PST
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:  12/25/2025 at 02:10 PM PST
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  12/25/2025 at 01:00 PM PST
# Maximum Observed Stage:                       32.09 Feet
# Maximum Observed Flow:                        772 cfs
#
# Earliest Date & Time of Maximum Forecast:     12/27/2025 at 11:00 PM PST
# Maximum Forecast Stage:                       32.29 Feet
# Maximum Forecast Flow:                        843 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  12/20/2025 02 PM PST           31.67            636                        Normal
  12/20/2025 03 PM PST           31.67            636         0              Normal
  12/20/2025 04 PM PST           31.66            633         -              Normal
  12/20/2025 05 PM PST           31.67            636         +              Normal
  12/20/2025 06 PM PST           31.68            639         +              Normal
  12/20/2025 07 PM PST           31.67            636         -              Normal
  12/20/2025 08 PM PST           31.68            639         +              Normal
  12/20/2025 09 PM PST           31.68            639         0              Normal
  12/20/2025 10 PM PST           31.68            639         0              Normal
  12/20/2025 11 PM PST           31.68            639         0              Normal
  12/21/2025 12 AM PST           31.68            639         0              Normal
  12/21/2025 01 AM PST           31.69            642         +              Normal
  12/21/2025 02 AM PST           31.69            642         0              Normal
  12/21/2025 03 AM PST           31.70            645         +              Normal
  12/21/2025 04 AM PST           31.70            645         0              Normal
  12/21/2025 05 AM PST           31.70            645         0              Normal
  12/21/2025 06 AM PST           31.71            648         +              Normal
  12/21/2025 07 AM PST           31.72            651         +              Normal
  12/21/2025 08 AM PST           31.72            651         0              Normal
  12/21/2025 09 AM PST           31.73            654         +              Normal
  12/21/2025 10 AM PST           31.73            654         0              Normal
  12/21/2025 11 AM PST           31.73            654         0              Normal
  12/21/2025 12 PM PST           31.74            657         +              Normal
  12/21/2025 01 PM PST           31.74            657         0              Normal
  12/21/2025 02 PM PST           31.75            660         +              Normal
  12/21/2025 03 PM PST           31.75            660         0              Normal
  12/21/2025 04 PM PST           31.76            663         +              Normal
  12/21/2025 05 PM PST           31.76            663         0              Normal
  12/21/2025 06 PM PST           31.77            666         +              Normal
  12/21/2025 07 PM PST           31.77            666         0              Normal
  12/21/2025 08 PM PST           31.77            666         0              Normal
  12/21/2025 09 PM PST           31.77            666         0              Normal
  12/21/2025 10 PM PST           31.78            669         +              Normal
  12/21/2025 11 PM PST           31.77            666         -              Normal
  12/22/2025 12 AM PST           31.78            669         +              Normal
  12/22/2025 01 AM PST           31.78            669         0              Normal
  12/22/2025 02 AM PST           31.78            669         0              Normal
  12/22/2025 03 AM PST           31.78            669         0              Normal
  12/22/2025 04 AM PST           31.80            675         +              Normal
  12/22/2025 05 AM PST           31.80            675         0              Normal
  12/22/2025 06 AM PST           31.80            675         0              Normal
  12/22/2025 07 AM PST           31.80            675         0              Normal
  12/22/2025 08 AM PST           31.80            675         0              Normal
  12/22/2025 09 AM PST           31.81            678         +              Normal
  12/22/2025 10 AM PST           31.81            678         0              Normal
  12/22/2025 11 AM PST           31.82            682         +              Normal
  12/22/2025 12 PM PST           31.82            682         0              Normal
  12/22/2025 01 PM PST           31.82            682         0              Normal
  12/22/2025 02 PM PST           31.81            678         -              Normal
  12/22/2025 03 PM PST           31.83            685         +              Normal
  12/22/2025 04 PM PST           31.83            685         0              Normal
  12/22/2025 05 PM PST           31.83            685         0              Normal
  12/22/2025 06 PM PST           31.83            685         0              Normal
  12/22/2025 07 PM PST           31.84            688         +              Normal
  12/22/2025 08 PM PST           31.84            688         0              Normal
  12/22/2025 09 PM PST           31.84            688         0              Normal
  12/22/2025 10 PM PST           31.84            688         0              Normal
  12/22/2025 11 PM PST           31.83            685         -              Normal
  12/23/2025 12 AM PST           31.84            688         +              Normal
  12/23/2025 01 AM PST           31.84            688         0              Normal
  12/23/2025 02 AM PST           31.84            688         0              Normal
  12/23/2025 03 AM PST           31.84            688         0              Normal
  12/23/2025 04 AM PST           31.84            688         0              Normal
  12/23/2025 05 AM PST           31.84            688         0              Normal
  12/23/2025 06 AM PST           31.84            688         0              Normal
  12/23/2025 07 AM PST           31.84            688         0              Normal
  12/23/2025 08 AM PST           31.84            688         0              Normal
  12/23/2025 09 AM PST           31.84            688         0              Normal
  12/23/2025 10 AM PST           31.84            688         0              Normal
  12/23/2025 11 AM PST           31.84            688         0              Normal
  12/23/2025 12 PM PST           31.87            698         +              Normal
  12/23/2025 01 PM PST           31.83            685         -              Normal
  12/23/2025 02 PM PST           31.82            682         -              Normal
  12/23/2025 03 PM PST           31.86            695         +              Normal
  12/23/2025 04 PM PST           31.83            685         -              Normal
  12/23/2025 05 PM PST           31.83            685         0              Normal
  12/23/2025 06 PM PST           31.85            691         +              Normal
  12/23/2025 07 PM PST           31.84            688         -              Normal
  12/23/2025 08 PM PST           31.84            688         0              Normal
  12/23/2025 09 PM PST           31.85            691         +              Normal
  12/23/2025 10 PM PST           31.85            691         0              Normal
  12/23/2025 11 PM PST           31.84            688         -              Normal
  12/24/2025 12 AM PST           31.85            691         +              Normal
  12/24/2025 01 AM PST           31.86            695         +              Normal
  12/24/2025 02 AM PST           31.85            691         -              Normal
  12/24/2025 03 AM PST           31.86            695         +              Normal
  12/24/2025 04 AM PST           31.86            695         0              Normal
  12/24/2025 05 AM PST           31.86            695         0              Normal
  12/24/2025 06 AM PST           31.87            698         +              Normal
  12/24/2025 07 AM PST           31.92            715         +              Normal
  12/24/2025 08 AM PST           31.91            711         -              Normal
  12/24/2025 09 AM PST           31.95            725         +              Normal
  12/24/2025 10 AM PST           31.95            725         0              Normal
  12/24/2025 11 AM PST           31.98            735         +              Normal
  12/24/2025 12 PM PST           31.99            738         +              Normal
  12/24/2025 01 PM PST           31.98            735         -              Normal
  12/24/2025 02 PM PST           31.99            738         +              Normal
  12/24/2025 03 PM PST           32.00            742         +              Normal
  12/24/2025 04 PM PST           31.99            738         -              Normal
  12/24/2025 05 PM PST           31.99            738         0              Normal
  12/24/2025 06 PM PST           32.00            742         +              Normal
  12/24/2025 07 PM PST           32.01            745         +              Normal
  12/24/2025 08 PM PST           32.00            742         -              Normal
  12/24/2025 09 PM PST           32.01            745         +              Normal
  12/24/2025 10 PM PST           32.02            748         +              Normal
  12/24/2025 11 PM PST           32.01            745         -              Normal
  12/25/2025 12 AM PST           32.01            745         0              Normal
  12/25/2025 01 AM PST           32.02            748         +              Normal
  12/25/2025 02 AM PST           32.01            745         -              Normal
  12/25/2025 03 AM PST           32.00            742         -              Normal
  12/25/2025 04 AM PST           32.00            742         0              Normal
  12/25/2025 05 AM PST           32.00            742         0              Normal
  12/25/2025 06 AM PST           32.01            745         +              Normal
  12/25/2025 07 AM PST           32.02            748         +              Normal
  12/25/2025 08 AM PST           32.04            755         +              Normal
  12/25/2025 09 AM PST           32.04            755         0              Normal
  12/25/2025 10 AM PST           32.04            755         0              Normal
  12/25/2025 11 AM PST           32.06            762         +              Normal
  12/25/2025 12 PM PST           32.07            765         +              Normal
  12/25/2025 01 PM PST           32.09            772         +              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  12/25/2025 02 PM PST           32.10            776                        Normal
  12/25/2025 03 PM PST           32.11            779         +              Normal
  12/25/2025 04 PM PST           32.12            783         +              Normal
  12/25/2025 05 PM PST           32.13            786         +              Normal
  12/25/2025 06 PM PST           32.14            790         +              Normal
  12/25/2025 07 PM PST           32.15            793         +              Normal
  12/25/2025 08 PM PST           32.15            793         0              Normal
  12/25/2025 09 PM PST           32.16            797         +              Normal
  12/25/2025 10 PM PST           32.17            800         +              Normal
  12/25/2025 11 PM PST           32.17            800         0              Normal
  12/26/2025 12 AM PST           32.18            804         +              Normal
  12/26/2025 01 AM PST           32.18            804         0              Normal
  12/26/2025 02 AM PST           32.19            807         +              Normal
  12/26/2025 03 AM PST           32.19            807         0              Normal
  12/26/2025 04 AM PST           32.20            811         +              Normal
  12/26/2025 05 AM PST           32.20            811         0              Normal
  12/26/2025 06 AM PST           32.21            814         +              Normal
  12/26/2025 07 AM PST           32.21            814         0              Normal
  12/26/2025 08 AM PST           32.22            818         +              Normal
  12/26/2025 09 AM PST           32.22            818         0              Normal
  12/26/2025 10 AM PST           32.22            818         0              Normal
  12/26/2025 11 AM PST           32.23            821         +              Normal
  12/26/2025 12 PM PST           32.23            821         0              Normal
  12/26/2025 01 PM PST           32.23            821         0              Normal
  12/26/2025 02 PM PST           32.23            821         0              Normal
  12/26/2025 03 PM PST           32.24            825         +              Normal
  12/26/2025 04 PM PST           32.24            825         0              Normal
  12/26/2025 05 PM PST           32.24            825         0              Normal
  12/26/2025 06 PM PST           32.24            825         0              Normal
  12/26/2025 07 PM PST           32.25            828         +              Normal
  12/26/2025 08 PM PST           32.25            828         0              Normal
  12/26/2025 09 PM PST           32.25            828         0              Normal
  12/26/2025 10 PM PST           32.25            828         0              Normal
  12/26/2025 11 PM PST           32.26            832         +              Normal
  12/27/2025 12 AM PST           32.26            832         0              Normal
  12/27/2025 01 AM PST           32.26            832         0              Normal
  12/27/2025 02 AM PST           32.26            832         0              Normal
  12/27/2025 03 AM PST           32.26            832         0              Normal
  12/27/2025 04 AM PST           32.26            832         0              Normal
  12/27/2025 05 AM PST           32.27            836         +              Normal
  12/27/2025 06 AM PST           32.27            836         0              Normal
  12/27/2025 07 AM PST           32.27            836         0              Normal
  12/27/2025 08 AM PST           32.27            836         0              Normal
  12/27/2025 09 AM PST           32.27            836         0              Normal
  12/27/2025 10 AM PST           32.27            836         0              Normal
  12/27/2025 11 AM PST           32.27            836         0              Normal
  12/27/2025 12 PM PST           32.27            836         0              Normal
  12/27/2025 01 PM PST           32.28            839         +              Normal
  12/27/2025 02 PM PST           32.28            839         0              Normal
  12/27/2025 03 PM PST           32.28            839         0              Normal
  12/27/2025 04 PM PST           32.28            839         0              Normal
  12/27/2025 05 PM PST           32.28            839         0              Normal
  12/27/2025 06 PM PST           32.28            839         0              Normal
  12/27/2025 07 PM PST           32.28            839         0              Normal
  12/27/2025 08 PM PST           32.28            839         0              Normal
  12/27/2025 09 PM PST           32.28            839         0              Normal
  12/27/2025 10 PM PST           32.28            839         0              Normal
  12/27/2025 11 PM PST           32.29            843         +              Normal
  12/28/2025 12 AM PST           32.29            843         0              Normal
  12/28/2025 01 AM PST           32.29            843         0              Normal
  12/28/2025 02 AM PST           32.29            843         0              Normal
  12/28/2025 03 AM PST           32.29            843         0              Normal
  12/28/2025 04 AM PST           32.29            843         0              Normal
  12/28/2025 05 AM PST           32.29            843         0              Normal
  12/28/2025 06 AM PST           32.29            843         0              Normal
  12/28/2025 07 AM PST           32.29            843         0              Normal
  12/28/2025 08 AM PST           32.29            843         0              Normal
  12/28/2025 09 AM PST           32.29            843         0              Normal
  12/28/2025 10 AM PST           32.29            843         0              Normal
  12/28/2025 11 AM PST           32.29            843         0              Normal
  12/28/2025 12 PM PST           32.29            843         0              Normal
  12/28/2025 01 PM PST           32.29            843         0              Normal
  12/28/2025 02 PM PST           32.29            843         0              Normal
  12/28/2025 03 PM PST           32.29            843         0              Normal
  12/28/2025 04 PM PST           32.29            843         0              Normal
  12/28/2025 05 PM PST           32.29            843         0              Normal
  12/28/2025 06 PM PST           32.29            843         0              Normal
  12/28/2025 07 PM PST           32.29            843         0              Normal
  12/28/2025 08 PM PST           32.29            843         0              Normal
  12/28/2025 09 PM PST           32.29            843         0              Normal
  12/28/2025 10 PM PST           32.29            843         0              Normal
  12/28/2025 11 PM PST           32.29            843         0              Normal
  12/29/2025 12 AM PST           32.29            843         0              Normal
  12/29/2025 01 AM PST           32.29            843         0              Normal
  12/29/2025 02 AM PST           32.29            843         0              Normal
  12/29/2025 03 AM PST           32.29            843         0              Normal
  12/29/2025 04 AM PST           32.29            843         0              Normal
  12/29/2025 05 AM PST           32.29            843         0              Normal
  12/29/2025 06 AM PST           32.29            843         0              Normal
  12/29/2025 07 AM PST           32.29            843         0              Normal
  12/29/2025 08 AM PST           32.29            843         0              Normal
  12/29/2025 09 AM PST           32.29            843         0              Normal
  12/29/2025 10 AM PST           32.29            843         0              Normal
  12/29/2025 11 AM PST           32.29            843         0              Normal
  12/29/2025 12 PM PST           32.29            843         0              Normal
  12/29/2025 01 PM PST           32.29            843         0              Normal
  12/29/2025 02 PM PST           32.29            843         0              Normal
  12/29/2025 03 PM PST           32.29            843         0              Normal
  12/29/2025 04 PM PST           32.29            843         0              Normal
  12/29/2025 05 PM PST           32.29            843         0              Normal
  12/29/2025 06 PM PST           32.29            843         0              Normal
  12/29/2025 07 PM PST           32.29            843         0              Normal
  12/29/2025 08 PM PST           32.29            843         0              Normal
  12/29/2025 09 PM PST           32.29            843         0              Normal
  12/29/2025 10 PM PST           32.29            843         0              Normal
  12/29/2025 11 PM PST           32.29            843         0              Normal
  12/30/2025 12 AM PST           32.29            843         0              Normal
  12/30/2025 01 AM PST           32.29            843         0              Normal
  12/30/2025 02 AM PST           32.29            843         0              Normal
  12/30/2025 03 AM PST           32.29            843         0              Normal
  12/30/2025 04 AM PST           32.29            843         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.