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: Jul 06 2026 at 7:14 AM PDTNext Issuance: Jul 07 2026 at 9:00 AM PDT
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:  07/06/2026 at 07:14 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  07/05/2026 at 05:00 PM PDT
# Maximum Observed Stage:                       30.80 Feet
# Maximum Observed Flow:                        503 cfs
#
# Earliest Date & Time of Maximum Forecast:     07/07/2026 at 05:00 PM PDT
# Maximum Forecast Stage:                       30.81 Feet
# Maximum Forecast Flow:                        506 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  07/01/2026 07 AM PDT           30.14            338                        Normal
  07/01/2026 08 AM PDT           30.19            349         +              Normal
  07/01/2026 09 AM PDT           30.24            361         +              Normal
  07/01/2026 10 AM PDT           30.24            361         0              Normal
  07/01/2026 11 AM PDT           30.25            364         +              Normal
  07/01/2026 12 PM PDT           30.27            368         +              Normal
  07/01/2026 01 PM PDT           30.25            364         -              Normal
  07/01/2026 02 PM PDT           30.24            361         -              Normal
  07/01/2026 03 PM PDT           30.25            364         +              Normal
  07/01/2026 04 PM PDT           30.25            364         0              Normal
  07/01/2026 05 PM PDT           30.26            366         +              Normal
  07/01/2026 06 PM PDT           30.26            366         0              Normal
  07/01/2026 07 PM PDT           30.24            361         -              Normal
  07/01/2026 08 PM PDT           30.22            356         -              Normal
  07/01/2026 09 PM PDT           30.21            354         -              Normal
  07/01/2026 10 PM PDT           30.21            354         0              Normal
  07/01/2026 11 PM PDT           30.20            352         -              Normal
  07/02/2026 12 AM PDT           30.20            352         0              Normal
  07/02/2026 01 AM PDT           30.23            359         +              Normal
  07/02/2026 02 AM PDT           30.22            356         -              Normal
  07/02/2026 03 AM PDT           30.21            354         -              Normal
  07/02/2026 04 AM PDT           30.22            356         +              Normal
  07/02/2026 05 AM PDT           30.22            356         0              Normal
  07/02/2026 06 AM PDT           30.23            359         +              Normal
  07/02/2026 07 AM PDT           30.25            364         +              Normal
  07/02/2026 08 AM PDT           30.26            366         +              Normal
  07/02/2026 09 AM PDT           30.27            368         +              Normal
  07/02/2026 10 AM PDT           30.29            373         +              Normal
  07/02/2026 11 AM PDT           30.31            378         +              Normal
  07/02/2026 12 PM PDT           30.28            371         -              Normal
  07/02/2026 01 PM PDT           30.30            376         +              Normal
  07/02/2026 02 PM PDT           30.32            380         +              Normal
  07/02/2026 03 PM PDT           30.31            378         -              Normal
  07/02/2026 04 PM PDT           30.31            378         0              Normal
  07/02/2026 05 PM PDT           30.32            380         +              Normal
  07/02/2026 06 PM PDT           30.32            380         0              Normal
  07/02/2026 07 PM PDT           30.32            380         0              Normal
  07/02/2026 08 PM PDT           30.31            378         -              Normal
  07/02/2026 09 PM PDT           30.34            385         +              Normal
  07/02/2026 10 PM PDT           30.36            390         +              Normal
  07/02/2026 11 PM PDT           30.34            385         -              Normal
  07/03/2026 12 AM PDT           30.36            390         +              Normal
  07/03/2026 01 AM PDT           30.36            390         0              Normal
  07/03/2026 02 AM PDT           30.34            385         -              Normal
  07/03/2026 03 AM PDT           30.34            385         0              Normal
  07/03/2026 04 AM PDT           30.32            380         -              Normal
  07/03/2026 05 AM PDT           30.31            378         -              Normal
  07/03/2026 06 AM PDT           30.31            378         0              Normal
  07/03/2026 07 AM PDT           30.28            371         -              Normal
  07/03/2026 08 AM PDT           30.27            368         -              Normal
  07/03/2026 09 AM PDT           30.26            366         -              Normal
  07/03/2026 10 AM PDT           30.30            376         +              Normal
  07/03/2026 11 AM PDT           30.33            383         +              Normal
  07/03/2026 12 PM PDT           30.36            390         +              Normal
  07/03/2026 01 PM PDT           30.37            393         +              Normal
  07/03/2026 02 PM PDT           30.39            398         +              Normal
  07/03/2026 03 PM PDT           30.40            400         +              Normal
  07/03/2026 04 PM PDT           30.38            395         -              Normal
  07/03/2026 05 PM PDT           30.37            393         -              Normal
  07/03/2026 06 PM PDT           30.36            390         -              Normal
  07/03/2026 07 PM PDT           30.36            390         0              Normal
  07/03/2026 08 PM PDT           30.34            385         -              Normal
  07/03/2026 09 PM PDT           30.35            388         +              Normal
  07/03/2026 10 PM PDT           30.36            390         +              Normal
  07/03/2026 11 PM PDT           30.36            390         0              Normal
  07/04/2026 12 AM PDT           30.36            390         0              Normal
  07/04/2026 01 AM PDT           30.36            390         0              Normal
  07/04/2026 02 AM PDT           30.35            388         -              Normal
  07/04/2026 03 AM PDT           30.34            385         -              Normal
  07/04/2026 04 AM PDT           30.34            385         0              Normal
  07/04/2026 05 AM PDT           30.34            385         0              Normal
  07/04/2026 06 AM PDT           30.33            383         -              Normal
  07/04/2026 07 AM PDT           30.33            383         0              Normal
  07/04/2026 08 AM PDT           30.34            385         +              Normal
  07/04/2026 09 AM PDT           30.34            385         0              Normal
  07/04/2026 10 AM PDT           30.36            390         +              Normal
  07/04/2026 11 AM PDT           30.39            398         +              Normal
  07/04/2026 12 PM PDT           30.41            402         +              Normal
  07/04/2026 01 PM PDT           30.43            407         +              Normal
  07/04/2026 02 PM PDT           30.46            415         +              Normal
  07/04/2026 03 PM PDT           30.47            417         +              Normal
  07/04/2026 04 PM PDT           30.50            425         +              Normal
  07/04/2026 05 PM PDT           30.55            438         +              Normal
  07/04/2026 06 PM PDT           30.54            435         -              Normal
  07/04/2026 07 PM PDT           30.54            435         0              Normal
  07/04/2026 08 PM PDT           30.55            438         +              Normal
  07/04/2026 09 PM PDT           30.55            438         0              Normal
  07/04/2026 10 PM PDT           30.56            440         +              Normal
  07/04/2026 11 PM PDT           30.58            445         +              Normal
  07/05/2026 12 AM PDT           30.59            448         +              Normal
  07/05/2026 01 AM PDT           30.59            448         0              Normal
  07/05/2026 02 AM PDT           30.59            448         0              Normal
  07/05/2026 03 AM PDT           30.60            451         +              Normal
  07/05/2026 04 AM PDT           30.59            448         -              Normal
  07/05/2026 05 AM PDT           30.59            448         0              Normal
  07/05/2026 06 AM PDT           30.60            451         +              Normal
  07/05/2026 07 AM PDT           30.60            451         0              Normal
  07/05/2026 08 AM PDT           30.64            461         +              Normal
  07/05/2026 09 AM PDT           30.63            458         -              Normal
  07/05/2026 10 AM PDT           30.66            466         +              Normal
  07/05/2026 11 AM PDT           30.70            477         +              Normal
  07/05/2026 12 PM PDT           30.74            487         +              Normal
  07/05/2026 01 PM PDT           30.75            490         +              Normal
  07/05/2026 02 PM PDT           30.77            495         +              Normal
  07/05/2026 03 PM PDT           30.80            503         +              Normal
  07/05/2026 04 PM PDT           30.78            498         -              Normal
  07/05/2026 05 PM PDT           30.80            503         +              Normal
  07/05/2026 06 PM PDT           30.79            501         -              Normal
  07/05/2026 07 PM PDT           30.78            498         -              Normal
  07/05/2026 08 PM PDT           30.78            498         0              Normal
  07/05/2026 09 PM PDT           30.77            495         -              Normal
  07/05/2026 10 PM PDT           30.76            493         -              Normal
  07/05/2026 11 PM PDT           30.75            490         -              Normal
  07/06/2026 12 AM PDT           30.75            490         0              Normal
  07/06/2026 01 AM PDT           30.74            487         -              Normal
  07/06/2026 02 AM PDT           30.73            485         -              Normal
  07/06/2026 03 AM PDT           30.73            485         0              Normal
  07/06/2026 04 AM PDT           30.73            485         0              Normal
  07/06/2026 05 AM PDT           30.72            482         -              Normal
  07/06/2026 06 AM PDT           30.72            482         0              Normal
  07/06/2026 07 AM PDT           30.72            482         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  07/06/2026 08 AM PDT           30.73            485                        Normal
  07/06/2026 09 AM PDT           30.73            485         0              Normal
  07/06/2026 10 AM PDT           30.74            487         +              Normal
  07/06/2026 11 AM PDT           30.74            487         0              Normal
  07/06/2026 12 PM PDT           30.75            490         +              Normal
  07/06/2026 01 PM PDT           30.75            490         0              Normal
  07/06/2026 02 PM PDT           30.75            490         0              Normal
  07/06/2026 03 PM PDT           30.76            493         +              Normal
  07/06/2026 04 PM PDT           30.76            493         0              Normal
  07/06/2026 05 PM PDT           30.77            495         +              Normal
  07/06/2026 06 PM PDT           30.77            495         0              Normal
  07/06/2026 07 PM PDT           30.77            495         0              Normal
  07/06/2026 08 PM PDT           30.77            495         0              Normal
  07/06/2026 09 PM PDT           30.78            498         +              Normal
  07/06/2026 10 PM PDT           30.78            498         0              Normal
  07/06/2026 11 PM PDT           30.78            498         0              Normal
  07/07/2026 12 AM PDT           30.78            498         0              Normal
  07/07/2026 01 AM PDT           30.79            501         +              Normal
  07/07/2026 02 AM PDT           30.79            501         0              Normal
  07/07/2026 03 AM PDT           30.79            501         0              Normal
  07/07/2026 04 AM PDT           30.79            501         0              Normal
  07/07/2026 05 AM PDT           30.79            501         0              Normal
  07/07/2026 06 AM PDT           30.79            501         0              Normal
  07/07/2026 07 AM PDT           30.80            503         +              Normal
  07/07/2026 08 AM PDT           30.80            503         0              Normal
  07/07/2026 09 AM PDT           30.80            503         0              Normal
  07/07/2026 10 AM PDT           30.80            503         0              Normal
  07/07/2026 11 AM PDT           30.80            503         0              Normal
  07/07/2026 12 PM PDT           30.80            503         0              Normal
  07/07/2026 01 PM PDT           30.80            503         0              Normal
  07/07/2026 02 PM PDT           30.80            503         0              Normal
  07/07/2026 03 PM PDT           30.80            503         0              Normal
  07/07/2026 04 PM PDT           30.80            503         0              Normal
  07/07/2026 05 PM PDT           30.81            506         +              Normal
  07/07/2026 06 PM PDT           30.81            506         0              Normal
  07/07/2026 07 PM PDT           30.81            506         0              Normal
  07/07/2026 08 PM PDT           30.81            506         0              Normal
  07/07/2026 09 PM PDT           30.81            506         0              Normal
  07/07/2026 10 PM PDT           30.81            506         0              Normal
  07/07/2026 11 PM PDT           30.81            506         0              Normal
  07/08/2026 12 AM PDT           30.81            506         0              Normal
  07/08/2026 01 AM PDT           30.81            506         0              Normal
  07/08/2026 02 AM PDT           30.81            506         0              Normal
  07/08/2026 03 AM PDT           30.81            506         0              Normal
  07/08/2026 04 AM PDT           30.81            506         0              Normal
  07/08/2026 05 AM PDT           30.81            506         0              Normal
  07/08/2026 06 AM PDT           30.81            506         0              Normal
  07/08/2026 07 AM PDT           30.81            506         0              Normal
  07/08/2026 08 AM PDT           30.81            506         0              Normal
  07/08/2026 09 AM PDT           30.81            506         0              Normal
  07/08/2026 10 AM PDT           30.81            506         0              Normal
  07/08/2026 11 AM PDT           30.81            506         0              Normal
  07/08/2026 12 PM PDT           30.81            506         0              Normal
  07/08/2026 01 PM PDT           30.81            506         0              Normal
  07/08/2026 02 PM PDT           30.81            506         0              Normal
  07/08/2026 03 PM PDT           30.81            506         0              Normal
  07/08/2026 04 PM PDT           30.81            506         0              Normal
  07/08/2026 05 PM PDT           30.81            506         0              Normal
  07/08/2026 06 PM PDT           30.81            506         0              Normal
  07/08/2026 07 PM PDT           30.81            506         0              Normal
  07/08/2026 08 PM PDT           30.81            506         0              Normal
  07/08/2026 09 PM PDT           30.81            506         0              Normal
  07/08/2026 10 PM PDT           30.81            506         0              Normal
  07/08/2026 11 PM PDT           30.81            506         0              Normal
  07/09/2026 12 AM PDT           30.80            503         -              Normal
  07/09/2026 01 AM PDT           30.80            503         0              Normal
  07/09/2026 02 AM PDT           30.80            503         0              Normal
  07/09/2026 03 AM PDT           30.80            503         0              Normal
  07/09/2026 04 AM PDT           30.80            503         0              Normal
  07/09/2026 05 AM PDT           30.80            503         0              Normal
  07/09/2026 06 AM PDT           30.80            503         0              Normal
  07/09/2026 07 AM PDT           30.80            503         0              Normal
  07/09/2026 08 AM PDT           30.80            503         0              Normal
  07/09/2026 09 AM PDT           30.80            503         0              Normal
  07/09/2026 10 AM PDT           30.80            503         0              Normal
  07/09/2026 11 AM PDT           30.80            503         0              Normal
  07/09/2026 12 PM PDT           30.80            503         0              Normal
  07/09/2026 01 PM PDT           30.80            503         0              Normal
  07/09/2026 02 PM PDT           30.80            503         0              Normal
  07/09/2026 03 PM PDT           30.80            503         0              Normal
  07/09/2026 04 PM PDT           30.80            503         0              Normal
  07/09/2026 05 PM PDT           30.80            503         0              Normal
  07/09/2026 06 PM PDT           30.80            503         0              Normal
  07/09/2026 07 PM PDT           30.80            503         0              Normal
  07/09/2026 08 PM PDT           30.80            503         0              Normal
  07/09/2026 09 PM PDT           30.80            503         0              Normal
  07/09/2026 10 PM PDT           30.80            503         0              Normal
  07/09/2026 11 PM PDT           30.79            501         -              Normal
  07/10/2026 12 AM PDT           30.79            501         0              Normal
  07/10/2026 01 AM PDT           30.79            501         0              Normal
  07/10/2026 02 AM PDT           30.79            501         0              Normal
  07/10/2026 03 AM PDT           30.79            501         0              Normal
  07/10/2026 04 AM PDT           30.79            501         0              Normal
  07/10/2026 05 AM PDT           30.79            501         0              Normal
  07/10/2026 06 AM PDT           30.79            501         0              Normal
  07/10/2026 07 AM PDT           30.79            501         0              Normal
  07/10/2026 08 AM PDT           30.79            501         0              Normal
  07/10/2026 09 AM PDT           30.79            501         0              Normal
  07/10/2026 10 AM PDT           30.79            501         0              Normal
  07/10/2026 11 AM PDT           30.79            501         0              Normal
  07/10/2026 12 PM PDT           30.79            501         0              Normal
  07/10/2026 01 PM PDT           30.79            501         0              Normal
  07/10/2026 02 PM PDT           30.79            501         0              Normal
  07/10/2026 03 PM PDT           30.79            501         0              Normal
  07/10/2026 04 PM PDT           30.79            501         0              Normal
  07/10/2026 05 PM PDT           30.79            501         0              Normal
  07/10/2026 06 PM PDT           30.79            501         0              Normal
  07/10/2026 07 PM PDT           30.79            501         0              Normal
  07/10/2026 08 PM PDT           30.79            501         0              Normal
  07/10/2026 09 PM PDT           30.79            501         0              Normal
  07/10/2026 10 PM PDT           30.79            501         0              Normal
  07/10/2026 11 PM PDT           30.79            501         0              Normal
  07/11/2026 12 AM PDT           30.79            501         0              Normal
  07/11/2026 01 AM PDT           30.79            501         0              Normal
  07/11/2026 02 AM PDT           30.79            501         0              Normal
  07/11/2026 03 AM PDT           30.79            501         0              Normal
  07/11/2026 04 AM PDT           30.79            501         0              Normal
  07/11/2026 05 AM PDT           30.79            501         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.