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: Feb 21 2026 at 8:31 AM PSTNext Issuance: Feb 22 2026 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:  02/21/2026 at 08:31 AM PST
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  02/21/2026 at 08:00 AM PST
# Maximum Observed Stage:                       37.33 Feet
# Maximum Observed Flow:                        3324 cfs
#
# Earliest Date & Time of Maximum Forecast:     02/23/2026 at 05:00 PM PST
# Maximum Forecast Stage:                       39.35 Feet
# Maximum Forecast Flow:                        4523 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  02/16/2026 08 AM PST           33.19           1268                        Normal
  02/16/2026 09 AM PST           33.21           1276         +              Normal
  02/16/2026 10 AM PST           33.22           1281         +              Normal
  02/16/2026 11 AM PST           33.25           1293         +              Normal
  02/16/2026 12 PM PST           33.29           1310         +              Normal
  02/16/2026 01 PM PST           33.32           1323         +              Normal
  02/16/2026 02 PM PST           33.34           1331         +              Normal
  02/16/2026 03 PM PST           33.34           1331         0              Normal
  02/16/2026 04 PM PST           33.34           1331         0              Normal
  02/16/2026 05 PM PST           33.34           1331         0              Normal
  02/16/2026 06 PM PST           33.33           1327         -              Normal
  02/16/2026 07 PM PST           33.33           1327         0              Normal
  02/16/2026 08 PM PST           33.33           1327         0              Normal
  02/16/2026 09 PM PST           33.33           1327         0              Normal
  02/16/2026 10 PM PST           33.34           1331         +              Normal
  02/16/2026 11 PM PST           33.34           1331         0              Normal
  02/17/2026 12 AM PST           33.37           1344         +              Normal
  02/17/2026 01 AM PST           33.36           1340         -              Normal
  02/17/2026 02 AM PST           33.37           1344         +              Normal
  02/17/2026 03 AM PST           33.37           1344         0              Normal
  02/17/2026 04 AM PST           33.38           1348         +              Normal
  02/17/2026 05 AM PST           33.37           1344         -              Normal
  02/17/2026 06 AM PST           33.38           1348         +              Normal
  02/17/2026 07 AM PST           33.37           1344         -              Normal
  02/17/2026 08 AM PST           33.38           1348         +              Normal
  02/17/2026 09 AM PST           33.37           1344         -              Normal
  02/17/2026 10 AM PST           33.37           1344         0              Normal
  02/17/2026 11 AM PST           33.36           1340         -              Normal
  02/17/2026 12 PM PST           33.39           1352         +              Normal
  02/17/2026 01 PM PST           33.39           1352         0              Normal
  02/17/2026 02 PM PST           33.42           1365         +              Normal
  02/17/2026 03 PM PST           33.44           1374         +              Normal
  02/17/2026 04 PM PST           33.46           1382         +              Normal
  02/17/2026 05 PM PST           33.47           1387         +              Normal
  02/17/2026 06 PM PST           33.48           1391         +              Normal
  02/17/2026 07 PM PST           33.50           1400         +              Normal
  02/17/2026 08 PM PST           33.51           1404         +              Normal
  02/17/2026 09 PM PST           33.52           1408         +              Normal
  02/17/2026 10 PM PST           33.53           1413         +              Normal
  02/17/2026 11 PM PST           33.54           1417         +              Normal
  02/18/2026 12 AM PST           33.56           1426         +              Normal
  02/18/2026 01 AM PST           33.56           1426         0              Normal
  02/18/2026 02 AM PST           33.58           1434         +              Normal
  02/18/2026 03 AM PST           33.60           1443         +              Normal
  02/18/2026 04 AM PST           33.62           1452         +              Normal
  02/18/2026 05 AM PST           33.63           1456         +              Normal
  02/18/2026 06 AM PST           33.65           1465         +              Normal
  02/18/2026 07 AM PST           33.67           1474         +              Normal
  02/18/2026 08 AM PST           33.70           1487         +              Normal
  02/18/2026 09 AM PST           33.73           1501         +              Normal
  02/18/2026 10 AM PST           33.75           1509         +              Normal
  02/18/2026 11 AM PST           33.79           1527         +              Normal
  02/18/2026 12 PM PST           33.83           1545         +              Normal
  02/18/2026 01 PM PST           33.86           1559         +              Normal
  02/18/2026 02 PM PST           33.90           1577         +              Normal
  02/18/2026 03 PM PST           33.95           1600         +              Normal
  02/18/2026 04 PM PST           34.00           1623         +              Normal
  02/18/2026 05 PM PST           34.05           1646         +              Normal
  02/18/2026 06 PM PST           34.11           1674         +              Normal
  02/18/2026 07 PM PST           34.18           1706         +              Normal
  02/18/2026 08 PM PST           34.25           1739         +              Normal
  02/18/2026 09 PM PST           34.32           1773         +              Normal
  02/18/2026 10 PM PST           34.39           1806         +              Normal
  02/18/2026 11 PM PST           34.47           1844         +              Normal
  02/19/2026 12 AM PST           34.54           1877         +              Normal
  02/19/2026 01 AM PST           34.62           1914         +              Normal
  02/19/2026 02 AM PST           34.68           1942         +              Normal
  02/19/2026 03 AM PST           34.74           1970         +              Normal
  02/19/2026 04 AM PST           34.81           2003         +              Normal
  02/19/2026 05 AM PST           34.89           2041         +              Normal
  02/19/2026 06 AM PST           34.96           2075         +              Normal
  02/19/2026 07 AM PST           35.05           2118         +              Normal
  02/19/2026 08 AM PST           35.12           2152         +              Normal
  02/19/2026 09 AM PST           35.18           2182         +              Normal
  02/19/2026 10 AM PST           35.25           2216         +              Normal
  02/19/2026 11 AM PST           35.31           2246         +              Normal
  02/19/2026 12 PM PST           35.37           2276         +              Normal
  02/19/2026 01 PM PST           35.42           2301         +              Normal
  02/19/2026 02 PM PST           35.49           2336         +              Normal
  02/19/2026 03 PM PST           35.55           2366         +              Normal
  02/19/2026 04 PM PST           35.61           2397         +              Normal
  02/19/2026 05 PM PST           35.69           2437         +              Normal
  02/19/2026 06 PM PST           35.72           2453         +              Normal
  02/19/2026 07 PM PST           35.77           2478         +              Normal
  02/19/2026 08 PM PST           35.83           2509         +              Normal
  02/19/2026 09 PM PST           35.87           2530         +              Normal
  02/19/2026 10 PM PST           35.90           2546         +              Normal
  02/19/2026 11 PM PST           35.96           2577         +              Normal
  02/20/2026 12 AM PST           36.02           2609         +              Normal
  02/20/2026 01 AM PST           36.06           2630         +              Normal
  02/20/2026 02 AM PST           36.11           2656         +              Normal
  02/20/2026 03 AM PST           36.17           2688         +              Normal
  02/20/2026 04 AM PST           36.23           2720         +              Normal
  02/20/2026 05 AM PST           36.28           2746         +              Normal
  02/20/2026 06 AM PST           36.34           2779         +              Normal
  02/20/2026 07 AM PST           36.40           2811         +              Normal
  02/20/2026 08 AM PST           36.46           2843         +              Normal
  02/20/2026 09 AM PST           36.52           2876         +              Normal
  02/20/2026 10 AM PST           36.56           2898         +              Normal
  02/20/2026 11 AM PST           36.61           2925         +              Normal
  02/20/2026 12 PM PST           36.67           2958         +              Normal
  02/20/2026 01 PM PST           36.71           2980         +              Normal
  02/20/2026 02 PM PST           36.73           2991         +              Normal
  02/20/2026 03 PM PST           36.79           3025         +              Normal
  02/20/2026 04 PM PST           36.81           3036         +              Normal
  02/20/2026 05 PM PST           36.83           3047         +              Normal
  02/20/2026 06 PM PST           36.85           3058         +              Normal
  02/20/2026 07 PM PST           36.87           3069         +              Normal
  02/20/2026 08 PM PST           36.91           3091         +              Normal
  02/20/2026 09 PM PST           36.94           3108         +              Normal
  02/20/2026 10 PM PST           36.96           3119         +              Normal
  02/20/2026 11 PM PST           37.00           3141         +              Normal
  02/21/2026 12 AM PST           37.02           3152         +              Normal
  02/21/2026 01 AM PST           37.06           3174         +              Normal
  02/21/2026 02 AM PST           37.07           3179         +              Normal
  02/21/2026 03 AM PST           37.10           3196         +              Normal
  02/21/2026 04 AM PST           37.16           3229         +              Normal
  02/21/2026 05 AM PST           37.19           3246         +              Normal
  02/21/2026 06 AM PST           37.23           3268         +              Normal
  02/21/2026 07 AM PST           37.28           3296         +              Normal
  02/21/2026 08 AM PST           37.33           3324         +              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  02/21/2026 09 AM PST           37.38           3352                        Normal
  02/21/2026 10 AM PST           37.43           3380         +              Normal
  02/21/2026 11 AM PST           37.47           3402         +              Normal
  02/21/2026 12 PM PST           37.51           3425         +              Normal
  02/21/2026 01 PM PST           37.55           3448         +              Normal
  02/21/2026 02 PM PST           37.58           3465         +              Normal
  02/21/2026 03 PM PST           37.62           3487         +              Normal
  02/21/2026 04 PM PST           37.65           3505         +              Normal
  02/21/2026 05 PM PST           37.68           3522         +              Normal
  02/21/2026 06 PM PST           37.71           3539         +              Normal
  02/21/2026 07 PM PST           37.74           3556         +              Normal
  02/21/2026 08 PM PST           37.77           3573         +              Normal
  02/21/2026 09 PM PST           37.81           3596         +              Normal
  02/21/2026 10 PM PST           37.84           3614         +              Normal
  02/21/2026 11 PM PST           37.87           3631         +              Normal
  02/22/2026 12 AM PST           37.91           3654         +              Normal
  02/22/2026 01 AM PST           37.95           3677         +              Normal
  02/22/2026 02 AM PST           37.98           3695         +              Normal
  02/22/2026 03 AM PST           38.02           3718         +              Normal
  02/22/2026 04 AM PST           38.06           3741         +              Normal
  02/22/2026 05 AM PST           38.10           3765         +              Normal
  02/22/2026 06 AM PST           38.14           3788         +              Normal
  02/22/2026 07 AM PST           38.18           3812         +              Normal
  02/22/2026 08 AM PST           38.23           3841         +              Normal
  02/22/2026 09 AM PST           38.28           3871         +              Normal
  02/22/2026 10 AM PST           38.33           3901         +              Normal
  02/22/2026 11 AM PST           38.38           3930         +              Normal
  02/22/2026 12 PM PST           38.43           3960         +              Normal
  02/22/2026 01 PM PST           38.48           3990         +              Normal
  02/22/2026 02 PM PST           38.53           4020         +              Normal
  02/22/2026 03 PM PST           38.58           4050         +              Normal
  02/22/2026 04 PM PST           38.63           4080         +              Normal
  02/22/2026 05 PM PST           38.68           4110         +              Normal
  02/22/2026 06 PM PST           38.73           4141         +              Normal
  02/22/2026 07 PM PST           38.78           4171         +              Normal
  02/22/2026 08 PM PST           38.83           4201         +              Normal
  02/22/2026 09 PM PST           38.87           4226         +              Normal
  02/22/2026 10 PM PST           38.91           4250         +              Normal
  02/22/2026 11 PM PST           38.95           4275         +              Normal
  02/23/2026 12 AM PST           38.99           4299         +              Normal
  02/23/2026 01 AM PST           39.03           4324         +              Normal
  02/23/2026 02 AM PST           39.07           4349         +              Normal
  02/23/2026 03 AM PST           39.10           4367         +              Normal
  02/23/2026 04 AM PST           39.13           4386         +              Normal
  02/23/2026 05 AM PST           39.16           4404         +              Normal
  02/23/2026 06 AM PST           39.19           4423         +              Normal
  02/23/2026 07 AM PST           39.21           4436         +              Normal
  02/23/2026 08 AM PST           39.24           4454         +              Normal
  02/23/2026 09 AM PST           39.26           4467         +              Normal
  02/23/2026 10 AM PST           39.28           4479         +              Normal
  02/23/2026 11 AM PST           39.29           4485         +              Normal
  02/23/2026 12 PM PST           39.31           4498         +              Normal
  02/23/2026 01 PM PST           39.32           4504         +              Normal
  02/23/2026 02 PM PST           39.33           4510         +              Normal
  02/23/2026 03 PM PST           39.34           4517         +              Normal
  02/23/2026 04 PM PST           39.34           4517         0              Normal
  02/23/2026 05 PM PST           39.35           4523         +              Normal
  02/23/2026 06 PM PST           39.35           4523         0              Normal
  02/23/2026 07 PM PST           39.35           4523         0              Normal
  02/23/2026 08 PM PST           39.35           4523         0              Normal
  02/23/2026 09 PM PST           39.35           4523         0              Normal
  02/23/2026 10 PM PST           39.35           4523         0              Normal
  02/23/2026 11 PM PST           39.34           4517         -              Normal
  02/24/2026 12 AM PST           39.34           4517         0              Normal
  02/24/2026 01 AM PST           39.32           4504         -              Normal
  02/24/2026 02 AM PST           39.31           4498         -              Normal
  02/24/2026 03 AM PST           39.29           4485         -              Normal
  02/24/2026 04 AM PST           39.27           4473         -              Normal
  02/24/2026 05 AM PST           39.26           4467         -              Normal
  02/24/2026 06 AM PST           39.24           4454         -              Normal
  02/24/2026 07 AM PST           39.22           4442         -              Normal
  02/24/2026 08 AM PST           39.20           4429         -              Normal
  02/24/2026 09 AM PST           39.17           4411         -              Normal
  02/24/2026 10 AM PST           39.15           4398         -              Normal
  02/24/2026 11 AM PST           39.13           4386         -              Normal
  02/24/2026 12 PM PST           39.11           4373         -              Normal
  02/24/2026 01 PM PST           39.09           4361         -              Normal
  02/24/2026 02 PM PST           39.06           4343         -              Normal
  02/24/2026 03 PM PST           39.04           4330         -              Normal
  02/24/2026 04 PM PST           39.02           4318         -              Normal
  02/24/2026 05 PM PST           39.00           4306         -              Normal
  02/24/2026 06 PM PST           38.97           4287         -              Normal
  02/24/2026 07 PM PST           38.95           4275         -              Normal
  02/24/2026 08 PM PST           38.92           4256         -              Normal
  02/24/2026 09 PM PST           38.90           4244         -              Normal
  02/24/2026 10 PM PST           38.88           4232         -              Normal
  02/24/2026 11 PM PST           38.85           4214         -              Normal
  02/25/2026 12 AM PST           38.83           4201         -              Normal
  02/25/2026 01 AM PST           38.80           4183         -              Normal
  02/25/2026 02 AM PST           38.77           4165         -              Normal
  02/25/2026 03 AM PST           38.75           4153         -              Normal
  02/25/2026 04 AM PST           38.72           4135         -              Normal
  02/25/2026 05 AM PST           38.70           4122         -              Normal
  02/25/2026 06 AM PST           38.67           4104         -              Normal
  02/25/2026 07 AM PST           38.65           4092         -              Normal
  02/25/2026 08 AM PST           38.62           4074         -              Normal
  02/25/2026 09 AM PST           38.59           4056         -              Normal
  02/25/2026 10 AM PST           38.57           4044         -              Normal
  02/25/2026 11 AM PST           38.54           4026         -              Normal
  02/25/2026 12 PM PST           38.52           4014         -              Normal
  02/25/2026 01 PM PST           38.49           3996         -              Normal
  02/25/2026 02 PM PST           38.46           3978         -              Normal
  02/25/2026 03 PM PST           38.44           3966         -              Normal
  02/25/2026 04 PM PST           38.41           3948         -              Normal
  02/25/2026 05 PM PST           38.39           3936         -              Normal
  02/25/2026 06 PM PST           38.36           3918         -              Normal
  02/25/2026 07 PM PST           38.34           3906         -              Normal
  02/25/2026 08 PM PST           38.31           3889         -              Normal
  02/25/2026 09 PM PST           38.28           3871         -              Normal
  02/25/2026 10 PM PST           38.26           3859         -              Normal
  02/25/2026 11 PM PST           38.23           3841         -              Normal
  02/26/2026 12 AM PST           38.21           3830         -              Normal
  02/26/2026 01 AM PST           38.18           3812         -              Normal
  02/26/2026 02 AM PST           38.16           3800         -              Normal
  02/26/2026 03 AM PST           38.13           3782         -              Normal
  02/26/2026 04 AM PST           38.11           3771         -              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.