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 05 2026 at 1:09 PM PSTNext Issuance: Mar 06 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:  03/05/2026 at 01:09 PM PST
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  02/28/2026 at 01:00 PM PST
# Maximum Observed Stage:                       37.14 Feet
# Maximum Observed Flow:                        3218 cfs
#
# Earliest Date & Time of Maximum Forecast:     03/05/2026 at 05:00 PM PST
# Maximum Forecast Stage:                       36.04 Feet
# Maximum Forecast Flow:                        2619 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  02/28/2026 01 PM PST           37.14           3218                        Normal
  02/28/2026 02 PM PST           37.13           3212         -              Normal
  02/28/2026 03 PM PST           37.12           3207         -              Normal
  02/28/2026 04 PM PST           37.10           3196         -              Normal
  02/28/2026 05 PM PST           37.09           3190         -              Normal
  02/28/2026 06 PM PST           37.08           3185         -              Normal
  02/28/2026 07 PM PST           37.08           3185         0              Normal
  02/28/2026 08 PM PST           37.06           3174         -              Normal
  02/28/2026 09 PM PST           37.05           3168         -              Normal
  02/28/2026 10 PM PST           37.02           3152         -              Normal
  02/28/2026 11 PM PST           37.04           3163         +              Normal
  03/01/2026 12 AM PST           37.02           3152         -              Normal
  03/01/2026 01 AM PST           37.02           3152         0              Normal
  03/01/2026 02 AM PST           36.99           3135         -              Normal
  03/01/2026 03 AM PST           36.99           3135         0              Normal
  03/01/2026 04 AM PST           36.99           3135         0              Normal
  03/01/2026 05 AM PST           36.98           3130         -              Normal
  03/01/2026 06 AM PST           36.97           3124         -              Normal
  03/01/2026 07 AM PST           36.96           3119         -              Normal
  03/01/2026 08 AM PST           36.97           3124         +              Normal
  03/01/2026 09 AM PST           36.95           3113         -              Normal
  03/01/2026 10 AM PST           36.94           3108         -              Normal
  03/01/2026 11 AM PST           36.94           3108         0              Normal
  03/01/2026 12 PM PST           36.92           3097         -              Normal
  03/01/2026 01 PM PST           36.91           3091         -              Normal
  03/01/2026 02 PM PST           36.92           3097         +              Normal
  03/01/2026 03 PM PST           36.89           3080         -              Normal
  03/01/2026 04 PM PST           36.89           3080         0              Normal
  03/01/2026 05 PM PST           36.89           3080         0              Normal
  03/01/2026 06 PM PST           36.88           3075         -              Normal
  03/01/2026 07 PM PST           36.87           3069         -              Normal
  03/01/2026 08 PM PST           36.87           3069         0              Normal
  03/01/2026 09 PM PST           36.83           3047         -              Normal
  03/01/2026 10 PM PST           36.85           3058         +              Normal
  03/01/2026 11 PM PST           36.83           3047         -              Normal
  03/02/2026 12 AM PST           36.83           3047         0              Normal
  03/02/2026 01 AM PST           36.82           3041         -              Normal
  03/02/2026 02 AM PST           36.82           3041         0              Normal
  03/02/2026 03 AM PST           36.80           3030         -              Normal
  03/02/2026 04 AM PST           36.80           3030         0              Normal
  03/02/2026 05 AM PST           36.81           3036         +              Normal
  03/02/2026 06 AM PST           36.79           3025         -              Normal
  03/02/2026 07 AM PST           36.79           3025         0              Normal
  03/02/2026 08 AM PST           36.77           3014         -              Normal
  03/02/2026 09 AM PST           36.78           3019         +              Normal
  03/02/2026 10 AM PST           36.78           3019         0              Normal
  03/02/2026 11 AM PST           36.75           3002         -              Normal
  03/02/2026 12 PM PST           36.76           3008         +              Normal
  03/02/2026 01 PM PST           36.74           2997         -              Normal
  03/02/2026 02 PM PST           36.74           2997         0              Normal
  03/02/2026 03 PM PST           36.73           2991         -              Normal
  03/02/2026 04 PM PST           36.74           2997         +              Normal
  03/02/2026 05 PM PST           36.71           2980         -              Normal
  03/02/2026 06 PM PST           36.71           2980         0              Normal
  03/02/2026 07 PM PST           36.71           2980         0              Normal
  03/02/2026 08 PM PST           36.69           2969         -              Normal
  03/02/2026 09 PM PST           36.67           2958         -              Normal
  03/02/2026 10 PM PST           36.66           2953         -              Normal
  03/02/2026 11 PM PST           36.67           2958         +              Normal
  03/03/2026 12 AM PST           36.65           2947         -              Normal
  03/03/2026 01 AM PST           36.63           2936         -              Normal
  03/03/2026 02 AM PST           36.63           2936         0              Normal
  03/03/2026 03 AM PST           36.62           2931         -              Normal
  03/03/2026 04 AM PST           36.60           2920         -              Normal
  03/03/2026 05 AM PST           36.59           2914         -              Normal
  03/03/2026 06 AM PST           36.58           2909         -              Normal
  03/03/2026 07 AM PST           36.56           2898         -              Normal
  03/03/2026 08 AM PST           36.55           2892         -              Normal
  03/03/2026 09 AM PST           36.54           2887         -              Normal
  03/03/2026 10 AM PST           36.51           2871         -              Normal
  03/03/2026 11 AM PST           36.51           2871         0              Normal
  03/03/2026 12 PM PST           36.48           2854         -              Normal
  03/03/2026 01 PM PST           36.46           2843         -              Normal
  03/03/2026 02 PM PST           36.45           2838         -              Normal
  03/03/2026 03 PM PST           36.41           2816         -              Normal
  03/03/2026 04 PM PST           36.41           2816         0              Normal
  03/03/2026 05 PM PST           36.38           2800         -              Normal
  03/03/2026 06 PM PST           36.37           2795         -              Normal
  03/03/2026 07 PM PST           36.35           2784         -              Normal
  03/03/2026 08 PM PST           36.34           2779         -              Normal
  03/03/2026 09 PM PST           36.33           2773         -              Normal
  03/03/2026 10 PM PST           36.31           2762         -              Normal
  03/03/2026 11 PM PST           36.31           2762         0              Normal
  03/04/2026 12 AM PST           36.30           2757         -              Normal
  03/04/2026 01 AM PST           36.28           2746         -              Normal
  03/04/2026 02 AM PST           36.26           2736         -              Normal
  03/04/2026 03 AM PST           36.25           2730         -              Normal
  03/04/2026 04 AM PST           36.24           2725         -              Normal
  03/04/2026 05 AM PST           36.23           2720         -              Normal
  03/04/2026 06 AM PST           36.21           2709         -              Normal
  03/04/2026 07 AM PST           36.20           2704         -              Normal
  03/04/2026 08 AM PST           36.18           2693         -              Normal
  03/04/2026 09 AM PST           36.18           2693         0              Normal
  03/04/2026 10 AM PST           36.14           2672         -              Normal
  03/04/2026 11 AM PST           36.13           2667         -              Normal
  03/04/2026 12 PM PST           36.12           2661         -              Normal
  03/04/2026 01 PM PST           36.11           2656         -              Normal
  03/04/2026 02 PM PST           36.10           2651         -              Normal
  03/04/2026 03 PM PST           36.07           2635         -              Normal
  03/04/2026 04 PM PST           36.09           2645         +              Normal
  03/04/2026 05 PM PST           36.06           2630         -              Normal
  03/04/2026 06 PM PST           36.06           2630         0              Normal
  03/04/2026 07 PM PST           36.05           2624         -              Normal
  03/04/2026 08 PM PST           36.04           2619         -              Normal
  03/04/2026 09 PM PST           36.03           2614         -              Normal
  03/04/2026 10 PM PST           36.02           2609         -              Normal
  03/04/2026 11 PM PST           36.02           2609         0              Normal
  03/05/2026 12 AM PST           36.01           2603         -              Normal
  03/05/2026 01 AM PST           36.01           2603         0              Normal
  03/05/2026 02 AM PST           35.99           2593         -              Normal
  03/05/2026 03 AM PST           36.00           2598         +              Normal
  03/05/2026 04 AM PST           36.00           2598         0              Normal
  03/05/2026 05 AM PST           35.98           2588         -              Normal
  03/05/2026 06 AM PST           35.99           2593         +              Normal
  03/05/2026 07 AM PST           35.98           2588         -              Normal
  03/05/2026 08 AM PST           35.99           2593         +              Normal
  03/05/2026 09 AM PST           36.00           2598         +              Normal
  03/05/2026 10 AM PST           36.00           2598         0              Normal
  03/05/2026 11 AM PST           36.00           2598         0              Normal
  03/05/2026 12 PM PST           36.02           2609         +              Normal
  03/05/2026 01 PM PST           36.02           2609         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  03/05/2026 02 PM PST           36.03           2614                        Normal
  03/05/2026 03 PM PST           36.03           2614         0              Normal
  03/05/2026 04 PM PST           36.03           2614         0              Normal
  03/05/2026 05 PM PST           36.04           2619         +              Normal
  03/05/2026 06 PM PST           36.04           2619         0              Normal
  03/05/2026 07 PM PST           36.03           2614         -              Normal
  03/05/2026 08 PM PST           36.03           2614         0              Normal
  03/05/2026 09 PM PST           36.02           2609         -              Normal
  03/05/2026 10 PM PST           36.01           2603         -              Normal
  03/05/2026 11 PM PST           36.00           2598         -              Normal
  03/06/2026 12 AM PST           35.98           2588         -              Normal
  03/06/2026 01 AM PST           35.95           2572         -              Normal
  03/06/2026 02 AM PST           35.91           2551         -              Normal
  03/06/2026 03 AM PST           35.87           2530         -              Normal
  03/06/2026 04 AM PST           35.83           2509         -              Normal
  03/06/2026 05 AM PST           35.77           2478         -              Normal
  03/06/2026 06 AM PST           35.71           2448         -              Normal
  03/06/2026 07 AM PST           35.64           2412         -              Normal
  03/06/2026 08 AM PST           35.57           2376         -              Normal
  03/06/2026 09 AM PST           35.49           2336         -              Normal
  03/06/2026 10 AM PST           35.41           2296         -              Normal
  03/06/2026 11 AM PST           35.32           2251         -              Normal
  03/06/2026 12 PM PST           35.23           2206         -              Normal
  03/06/2026 01 PM PST           35.13           2157         -              Normal
  03/06/2026 02 PM PST           35.03           2109         -              Normal
  03/06/2026 03 PM PST           34.93           2060         -              Normal
  03/06/2026 04 PM PST           34.83           2013         -              Normal
  03/06/2026 05 PM PST           34.73           1965         -              Normal
  03/06/2026 06 PM PST           34.62           1914         -              Normal
  03/06/2026 07 PM PST           34.52           1867         -              Normal
  03/06/2026 08 PM PST           34.41           1816         -              Normal
  03/06/2026 09 PM PST           34.31           1768         -              Normal
  03/06/2026 10 PM PST           34.21           1720         -              Normal
  03/06/2026 11 PM PST           34.11           1674         -              Normal
  03/07/2026 12 AM PST           34.01           1627         -              Normal
  03/07/2026 01 AM PST           33.91           1582         -              Normal
  03/07/2026 02 AM PST           33.82           1541         -              Normal
  03/07/2026 03 AM PST           33.72           1496         -              Normal
  03/07/2026 04 AM PST           33.63           1456         -              Normal
  03/07/2026 05 AM PST           33.54           1417         -              Normal
  03/07/2026 06 AM PST           33.46           1382         -              Normal
  03/07/2026 07 AM PST           33.38           1348         -              Normal
  03/07/2026 08 AM PST           33.30           1314         -              Normal
  03/07/2026 09 AM PST           33.22           1281         -              Normal
  03/07/2026 10 AM PST           33.15           1252         -              Normal
  03/07/2026 11 AM PST           33.08           1223         -              Normal
  03/07/2026 12 PM PST           33.01           1194         -              Normal
  03/07/2026 01 PM PST           32.95           1170         -              Normal
  03/07/2026 02 PM PST           32.89           1146         -              Normal
  03/07/2026 03 PM PST           32.83           1122         -              Normal
  03/07/2026 04 PM PST           32.77           1099         -              Normal
  03/07/2026 05 PM PST           32.72           1079         -              Normal
  03/07/2026 06 PM PST           32.67           1060         -              Normal
  03/07/2026 07 PM PST           32.63           1044         -              Normal
  03/07/2026 08 PM PST           32.59           1029         -              Normal
  03/07/2026 09 PM PST           32.55           1014         -              Normal
  03/07/2026 10 PM PST           32.51            999         -              Normal
  03/07/2026 11 PM PST           32.47            983         -              Normal
  03/08/2026 12 AM PST           32.44            972         -              Normal
  03/08/2026 01 AM PST           32.40            957         -              Normal
  03/08/2026 03 AM PDT           32.37            946         -              Normal
  03/08/2026 04 AM PDT           32.34            934         -              Normal
  03/08/2026 05 AM PDT           32.32            927         -              Normal
  03/08/2026 06 AM PDT           32.29            916         -              Normal
  03/08/2026 07 AM PDT           32.26            905         -              Normal
  03/08/2026 08 AM PDT           32.24            897         -              Normal
  03/08/2026 09 AM PDT           32.21            886         -              Normal
  03/08/2026 10 AM PDT           32.19            879         -              Normal
  03/08/2026 11 AM PDT           32.17            872         -              Normal
  03/08/2026 12 PM PDT           32.15            864         -              Normal
  03/08/2026 01 PM PDT           32.13            857         -              Normal
  03/08/2026 02 PM PDT           32.11            850         -              Normal
  03/08/2026 03 PM PDT           32.10            846         -              Normal
  03/08/2026 04 PM PDT           32.09            843         -              Normal
  03/08/2026 05 PM PDT           32.07            836         -              Normal
  03/08/2026 06 PM PDT           32.06            832         -              Normal
  03/08/2026 07 PM PDT           32.05            828         -              Normal
  03/08/2026 08 PM PDT           32.04            825         -              Normal
  03/08/2026 09 PM PDT           32.03            821         -              Normal
  03/08/2026 10 PM PDT           32.02            818         -              Normal
  03/08/2026 11 PM PDT           32.02            818         0              Normal
  03/09/2026 12 AM PDT           32.01            814         -              Normal
  03/09/2026 01 AM PDT           32.01            814         0              Normal
  03/09/2026 02 AM PDT           32.00            811         -              Normal
  03/09/2026 03 AM PDT           32.00            811         0              Normal
  03/09/2026 04 AM PDT           31.99            807         -              Normal
  03/09/2026 05 AM PDT           31.99            807         0              Normal
  03/09/2026 06 AM PDT           31.98            804         -              Normal
  03/09/2026 07 AM PDT           31.98            804         0              Normal
  03/09/2026 08 AM PDT           31.98            804         0              Normal
  03/09/2026 09 AM PDT           31.98            804         0              Normal
  03/09/2026 10 AM PDT           31.97            800         -              Normal
  03/09/2026 11 AM PDT           31.97            800         0              Normal
  03/09/2026 12 PM PDT           31.97            800         0              Normal
  03/09/2026 01 PM PDT           31.97            800         0              Normal
  03/09/2026 02 PM PDT           31.97            800         0              Normal
  03/09/2026 03 PM PDT           31.97            800         0              Normal
  03/09/2026 04 PM PDT           31.96            797         -              Normal
  03/09/2026 05 PM PDT           31.96            797         0              Normal
  03/09/2026 06 PM PDT           31.96            797         0              Normal
  03/09/2026 07 PM PDT           31.96            797         0              Normal
  03/09/2026 08 PM PDT           31.96            797         0              Normal
  03/09/2026 09 PM PDT           31.96            797         0              Normal
  03/09/2026 10 PM PDT           31.96            797         0              Normal
  03/09/2026 11 PM PDT           31.96            797         0              Normal
  03/10/2026 12 AM PDT           31.96            797         0              Normal
  03/10/2026 01 AM PDT           31.96            797         0              Normal
  03/10/2026 02 AM PDT           31.96            797         0              Normal
  03/10/2026 03 AM PDT           31.96            797         0              Normal
  03/10/2026 04 AM PDT           31.96            797         0              Normal
  03/10/2026 05 AM PDT           31.96            797         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.