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 24 2026 at 7:44 PM PSTNext Issuance: Feb 25 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:  02/24/2026 at 07:44 PM PST
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  02/24/2026 at 05:00 AM PST
# Maximum Observed Stage:                       38.57 Feet
# Maximum Observed Flow:                        4044 cfs
#
# Earliest Date & Time of Maximum Forecast:     02/24/2026 at 08:00 PM PST
# Maximum Forecast Stage:                       38.44 Feet
# Maximum Forecast Flow:                        3966 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  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           37.25           3279         +              Normal
  02/21/2026 08 AM PST           37.28           3296         +              Normal
  02/21/2026 09 AM PST           37.33           3324         +              Normal
  02/21/2026 10 AM PST           37.37           3346         +              Normal
  02/21/2026 11 AM PST           37.40           3363         +              Normal
  02/21/2026 12 PM PST           37.43           3380         +              Normal
  02/21/2026 01 PM PST           37.46           3397         +              Normal
  02/21/2026 02 PM PST           37.49           3414         +              Normal
  02/21/2026 03 PM PST           37.52           3431         +              Normal
  02/21/2026 04 PM PST           37.54           3442         +              Normal
  02/21/2026 05 PM PST           37.56           3453         +              Normal
  02/21/2026 06 PM PST           37.56           3453         0              Normal
  02/21/2026 07 PM PST           37.59           3470         +              Normal
  02/21/2026 08 PM PST           37.60           3476         +              Normal
  02/21/2026 09 PM PST           37.64           3499         +              Normal
  02/21/2026 10 PM PST           37.64           3499         0              Normal
  02/21/2026 11 PM PST           37.67           3516         +              Normal
  02/22/2026 12 AM PST           37.69           3527         +              Normal
  02/22/2026 01 AM PST           37.71           3539         +              Normal
  02/22/2026 02 AM PST           37.73           3550         +              Normal
  02/22/2026 03 AM PST           37.75           3562         +              Normal
  02/22/2026 04 AM PST           37.77           3573         +              Normal
  02/22/2026 05 AM PST           37.80           3591         +              Normal
  02/22/2026 06 AM PST           37.84           3614         +              Normal
  02/22/2026 07 AM PST           37.85           3619         +              Normal
  02/22/2026 08 AM PST           37.87           3631         +              Normal
  02/22/2026 09 AM PST           37.90           3648         +              Normal
  02/22/2026 10 AM PST           37.93           3666         +              Normal
  02/22/2026 11 AM PST           37.96           3683         +              Normal
  02/22/2026 12 PM PST           37.98           3695         +              Normal
  02/22/2026 01 PM PST           38.00           3706         +              Normal
  02/22/2026 02 PM PST           38.02           3718         +              Normal
  02/22/2026 03 PM PST           38.04           3730         +              Normal
  02/22/2026 04 PM PST           38.06           3741         +              Normal
  02/22/2026 05 PM PST           38.07           3747         +              Normal
  02/22/2026 06 PM PST           38.08           3753         +              Normal
  02/22/2026 07 PM PST           38.12           3777         +              Normal
  02/22/2026 08 PM PST           38.13           3782         +              Normal
  02/22/2026 09 PM PST           38.16           3800         +              Normal
  02/22/2026 10 PM PST           38.19           3818         +              Normal
  02/22/2026 11 PM PST           38.21           3830         +              Normal
  02/23/2026 12 AM PST           38.22           3835         +              Normal
  02/23/2026 01 AM PST           38.25           3853         +              Normal
  02/23/2026 02 AM PST           38.27           3865         +              Normal
  02/23/2026 03 AM PST           38.28           3871         +              Normal
  02/23/2026 04 AM PST           38.31           3889         +              Normal
  02/23/2026 05 AM PST           38.32           3895         +              Normal
  02/23/2026 06 AM PST           38.34           3906         +              Normal
  02/23/2026 07 AM PST           38.36           3918         +              Normal
  02/23/2026 08 AM PST           38.37           3924         +              Normal
  02/23/2026 09 AM PST           38.39           3936         +              Normal
  02/23/2026 10 AM PST           38.42           3954         +              Normal
  02/23/2026 11 AM PST           38.44           3966         +              Normal
  02/23/2026 12 PM PST           38.46           3978         +              Normal
  02/23/2026 01 PM PST           38.47           3984         +              Normal
  02/23/2026 02 PM PST           38.49           3996         +              Normal
  02/23/2026 03 PM PST           38.50           4002         +              Normal
  02/23/2026 04 PM PST           38.49           3996         -              Normal
  02/23/2026 05 PM PST           38.50           4002         +              Normal
  02/23/2026 06 PM PST           38.53           4020         +              Normal
  02/23/2026 07 PM PST           38.53           4020         0              Normal
  02/23/2026 08 PM PST           38.55           4032         +              Normal
  02/23/2026 09 PM PST           38.56           4038         +              Normal
  02/23/2026 10 PM PST           38.56           4038         0              Normal
  02/23/2026 11 PM PST           38.56           4038         0              Normal
  02/24/2026 12 AM PST           38.57           4044         +              Normal
  02/24/2026 01 AM PST           38.57           4044         0              Normal
  02/24/2026 02 AM PST           38.56           4038         -              Normal
  02/24/2026 03 AM PST           38.56           4038         0              Normal
  02/24/2026 04 AM PST           38.56           4038         0              Normal
  02/24/2026 05 AM PST           38.57           4044         +              Normal
  02/24/2026 06 AM PST           38.55           4032         -              Normal
  02/24/2026 07 AM PST           38.56           4038         +              Normal
  02/24/2026 08 AM PST           38.55           4032         -              Normal
  02/24/2026 09 AM PST           38.53           4020         -              Normal
  02/24/2026 10 AM PST           38.54           4026         +              Normal
  02/24/2026 11 AM PST           38.55           4032         +              Normal
  02/24/2026 12 PM PST           38.54           4026         -              Normal
  02/24/2026 01 PM PST           38.53           4020         -              Normal
  02/24/2026 02 PM PST           38.52           4014         -              Normal
  02/24/2026 03 PM PST           38.50           4002         -              Normal
  02/24/2026 04 PM PST           38.48           3990         -              Normal
  02/24/2026 05 PM PST           38.47           3984         -              Normal
  02/24/2026 06 PM PST           38.46           3978         -              Normal
  02/24/2026 07 PM PST           38.45           3972         -              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  02/24/2026 08 PM PST           38.44           3966                        Normal
  02/24/2026 09 PM PST           38.42           3954         -              Normal
  02/24/2026 10 PM PST           38.41           3948         -              Normal
  02/24/2026 11 PM PST           38.40           3942         -              Normal
  02/25/2026 12 AM PST           38.39           3936         -              Normal
  02/25/2026 01 AM PST           38.38           3930         -              Normal
  02/25/2026 02 AM PST           38.37           3924         -              Normal
  02/25/2026 03 AM PST           38.35           3912         -              Normal
  02/25/2026 04 AM PST           38.34           3906         -              Normal
  02/25/2026 05 AM PST           38.32           3895         -              Normal
  02/25/2026 06 AM PST           38.31           3889         -              Normal
  02/25/2026 07 AM PST           38.29           3877         -              Normal
  02/25/2026 08 AM PST           38.27           3865         -              Normal
  02/25/2026 09 AM PST           38.25           3853         -              Normal
  02/25/2026 10 AM PST           38.23           3841         -              Normal
  02/25/2026 11 AM PST           38.21           3830         -              Normal
  02/25/2026 12 PM PST           38.19           3818         -              Normal
  02/25/2026 01 PM PST           38.17           3806         -              Normal
  02/25/2026 02 PM PST           38.15           3794         -              Normal
  02/25/2026 03 PM PST           38.12           3777         -              Normal
  02/25/2026 04 PM PST           38.10           3765         -              Normal
  02/25/2026 05 PM PST           38.07           3747         -              Normal
  02/25/2026 06 PM PST           38.04           3730         -              Normal
  02/25/2026 07 PM PST           38.01           3712         -              Normal
  02/25/2026 08 PM PST           37.98           3695         -              Normal
  02/25/2026 09 PM PST           37.96           3683         -              Normal
  02/25/2026 10 PM PST           37.93           3666         -              Normal
  02/25/2026 11 PM PST           37.90           3648         -              Normal
  02/26/2026 12 AM PST           37.88           3637         -              Normal
  02/26/2026 01 AM PST           37.85           3619         -              Normal
  02/26/2026 02 AM PST           37.82           3602         -              Normal
  02/26/2026 03 AM PST           37.80           3591         -              Normal
  02/26/2026 04 AM PST           37.77           3573         -              Normal
  02/26/2026 05 AM PST           37.75           3562         -              Normal
  02/26/2026 06 AM PST           37.72           3545         -              Normal
  02/26/2026 07 AM PST           37.70           3533         -              Normal
  02/26/2026 08 AM PST           37.67           3516         -              Normal
  02/26/2026 09 AM PST           37.65           3505         -              Normal
  02/26/2026 10 AM PST           37.62           3487         -              Normal
  02/26/2026 11 AM PST           37.59           3470         -              Normal
  02/26/2026 12 PM PST           37.57           3459         -              Normal
  02/26/2026 01 PM PST           37.55           3448         -              Normal
  02/26/2026 02 PM PST           37.52           3431         -              Normal
  02/26/2026 03 PM PST           37.50           3419         -              Normal
  02/26/2026 04 PM PST           37.47           3402         -              Normal
  02/26/2026 05 PM PST           37.45           3391         -              Normal
  02/26/2026 06 PM PST           37.42           3374         -              Normal
  02/26/2026 07 PM PST           37.40           3363         -              Normal
  02/26/2026 08 PM PST           37.38           3352         -              Normal
  02/26/2026 09 PM PST           37.35           3335         -              Normal
  02/26/2026 10 PM PST           37.33           3324         -              Normal
  02/26/2026 11 PM PST           37.30           3307         -              Normal
  02/27/2026 12 AM PST           37.28           3296         -              Normal
  02/27/2026 01 AM PST           37.26           3284         -              Normal
  02/27/2026 02 AM PST           37.24           3273         -              Normal
  02/27/2026 03 AM PST           37.21           3257         -              Normal
  02/27/2026 04 AM PST           37.19           3246         -              Normal
  02/27/2026 05 AM PST           37.17           3234         -              Normal
  02/27/2026 06 AM PST           37.15           3223         -              Normal
  02/27/2026 07 AM PST           37.13           3212         -              Normal
  02/27/2026 08 AM PST           37.11           3201         -              Normal
  02/27/2026 09 AM PST           37.09           3190         -              Normal
  02/27/2026 10 AM PST           37.07           3179         -              Normal
  02/27/2026 11 AM PST           37.05           3168         -              Normal
  02/27/2026 12 PM PST           37.03           3157         -              Normal
  02/27/2026 01 PM PST           37.01           3146         -              Normal
  02/27/2026 02 PM PST           36.99           3135         -              Normal
  02/27/2026 03 PM PST           36.97           3124         -              Normal
  02/27/2026 04 PM PST           36.95           3113         -              Normal
  02/27/2026 05 PM PST           36.93           3102         -              Normal
  02/27/2026 06 PM PST           36.91           3091         -              Normal
  02/27/2026 07 PM PST           36.90           3086         -              Normal
  02/27/2026 08 PM PST           36.88           3075         -              Normal
  02/27/2026 09 PM PST           36.86           3064         -              Normal
  02/27/2026 10 PM PST           36.84           3052         -              Normal
  02/27/2026 11 PM PST           36.83           3047         -              Normal
  02/28/2026 12 AM PST           36.81           3036         -              Normal
  02/28/2026 01 AM PST           36.80           3030         -              Normal
  02/28/2026 02 AM PST           36.78           3019         -              Normal
  02/28/2026 03 AM PST           36.76           3008         -              Normal
  02/28/2026 04 AM PST           36.75           3002         -              Normal
  02/28/2026 05 AM PST           36.73           2991         -              Normal
  02/28/2026 06 AM PST           36.72           2986         -              Normal
  02/28/2026 07 AM PST           36.70           2975         -              Normal
  02/28/2026 08 AM PST           36.69           2969         -              Normal
  02/28/2026 09 AM PST           36.68           2964         -              Normal
  02/28/2026 10 AM PST           36.66           2953         -              Normal
  02/28/2026 11 AM PST           36.65           2947         -              Normal
  02/28/2026 12 PM PST           36.64           2942         -              Normal
  02/28/2026 01 PM PST           36.62           2931         -              Normal
  02/28/2026 02 PM PST           36.61           2925         -              Normal
  02/28/2026 03 PM PST           36.60           2920         -              Normal
  02/28/2026 04 PM PST           36.59           2914         -              Normal
  02/28/2026 05 PM PST           36.57           2903         -              Normal
  02/28/2026 06 PM PST           36.56           2898         -              Normal
  02/28/2026 07 PM PST           36.55           2892         -              Normal
  02/28/2026 08 PM PST           36.54           2887         -              Normal
  02/28/2026 09 PM PST           36.53           2882         -              Normal
  02/28/2026 10 PM PST           36.52           2876         -              Normal
  02/28/2026 11 PM PST           36.50           2865         -              Normal
  03/01/2026 12 AM PST           36.49           2860         -              Normal
  03/01/2026 01 AM PST           36.48           2854         -              Normal
  03/01/2026 02 AM PST           36.47           2849         -              Normal
  03/01/2026 03 AM PST           36.46           2843         -              Normal
  03/01/2026 04 AM PST           36.45           2838         -              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.