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: Nov 06 2026 at 12:31 PM PSTNext Issuance: Nov 07 2026 at 9:00 AM PST
Action: 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:  11/06/2026 at 12:31 PM PST
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  11/01/2026 at 05:00 PM PST
# Maximum Observed Stage:                       32.01 Feet
# Maximum Observed Flow:                        886 cfs
#
# Earliest Date & Time of Maximum Forecast:     11/06/2026 at 01:00 PM PST
# Maximum Forecast Stage:                       31.66 Feet
# Maximum Forecast Flow:                        762 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  11/01/2026 12 PM PST           32.01            886                        Normal
  11/01/2026 01 PM PST           32.01            886         0              Normal
  11/01/2026 02 PM PST           32.00            883         -              Normal
  11/01/2026 03 PM PST           32.00            883         0              Normal
  11/01/2026 04 PM PST           32.01            886         +              Normal
  11/01/2026 05 PM PST           32.01            886         0              Normal
  11/01/2026 06 PM PST           32.00            883         -              Normal
  11/01/2026 07 PM PST           32.00            883         0              Normal
  11/01/2026 08 PM PST           32.00            883         0              Normal
  11/01/2026 09 PM PST           32.00            883         0              Normal
  11/01/2026 10 PM PST           32.00            883         0              Normal
  11/01/2026 11 PM PST           31.99            879         -              Normal
  11/02/2026 12 AM PST           31.98            875         -              Normal
  11/02/2026 01 AM PST           31.97            872         -              Normal
  11/02/2026 02 AM PST           31.96            868         -              Normal
  11/02/2026 03 AM PST           31.96            868         0              Normal
  11/02/2026 04 AM PST           31.95            864         -              Normal
  11/02/2026 05 AM PST           31.94            861         -              Normal
  11/02/2026 06 AM PST           31.93            857         -              Normal
  11/02/2026 07 AM PST           31.91            850         -              Normal
  11/02/2026 08 AM PST           31.85            828         -              Normal
  11/02/2026 09 AM PST           31.81            814         -              Normal
  11/02/2026 10 AM PST           31.81            814         0              Normal
  11/02/2026 11 AM PST           31.82            818         +              Normal
  11/02/2026 12 PM PST           31.80            811         -              Normal
  11/02/2026 01 PM PST           31.78            804         -              Normal
  11/02/2026 02 PM PST           31.77            800         -              Normal
  11/02/2026 03 PM PST           31.77            800         0              Normal
  11/02/2026 04 PM PST           31.79            807         +              Normal
  11/02/2026 05 PM PST           31.81            814         +              Normal
  11/02/2026 06 PM PST           31.84            825         +              Normal
  11/02/2026 07 PM PST           31.86            832         +              Normal
  11/02/2026 08 PM PST           31.88            839         +              Normal
  11/02/2026 09 PM PST           31.88            839         0              Normal
  11/02/2026 10 PM PST           31.88            839         0              Normal
  11/02/2026 11 PM PST           31.87            836         -              Normal
  11/03/2026 12 AM PST           31.85            828         -              Normal
  11/03/2026 01 AM PST           31.84            825         -              Normal
  11/03/2026 02 AM PST           31.82            818         -              Normal
  11/03/2026 03 AM PST           31.81            814         -              Normal
  11/03/2026 04 AM PST           31.80            811         -              Normal
  11/03/2026 05 AM PST           31.79            807         -              Normal
  11/03/2026 06 AM PST           31.77            800         -              Normal
  11/03/2026 07 AM PST           31.76            797         -              Normal
  11/03/2026 08 AM PST           31.74            790         -              Normal
  11/03/2026 09 AM PST           31.74            790         0              Normal
  11/03/2026 10 AM PST           31.74            790         0              Normal
  11/03/2026 11 AM PST           31.72            783         -              Normal
  11/03/2026 12 PM PST           31.72            783         0              Normal
  11/03/2026 01 PM PST           31.72            783         0              Normal
  11/03/2026 02 PM PST           31.71            779         -              Normal
  11/03/2026 03 PM PST           31.70            776         -              Normal
  11/03/2026 04 PM PST           31.69            772         -              Normal
  11/03/2026 05 PM PST           31.68            769         -              Normal
  11/03/2026 06 PM PST           31.67            765         -              Normal
  11/03/2026 07 PM PST           31.67            765         0              Normal
  11/03/2026 08 PM PST           31.66            762         -              Normal
  11/03/2026 09 PM PST           31.66            762         0              Normal
  11/03/2026 10 PM PST           31.66            762         0              Normal
  11/03/2026 11 PM PST           31.66            762         0              Normal
  11/04/2026 12 AM PST           31.67            765         +              Normal
  11/04/2026 01 AM PST           31.66            762         -              Normal
  11/04/2026 02 AM PST           31.67            765         +              Normal
  11/04/2026 03 AM PST           31.67            765         0              Normal
  11/04/2026 04 AM PST           31.68            769         +              Normal
  11/04/2026 05 AM PST           31.69            772         +              Normal
  11/04/2026 06 AM PST           31.69            772         0              Normal
  11/04/2026 07 AM PST           31.70            776         +              Normal
  11/04/2026 08 AM PST           31.70            776         0              Normal
  11/04/2026 09 AM PST           31.70            776         0              Normal
  11/04/2026 10 AM PST           31.71            779         +              Normal
  11/04/2026 11 AM PST           31.72            783         +              Normal
  11/04/2026 12 PM PST           31.71            779         -              Normal
  11/04/2026 01 PM PST           31.72            783         +              Normal
  11/04/2026 02 PM PST           31.71            779         -              Normal
  11/04/2026 03 PM PST           31.69            772         -              Normal
  11/04/2026 04 PM PST           31.67            765         -              Normal
  11/04/2026 05 PM PST           31.69            772         +              Normal
  11/04/2026 06 PM PST           31.70            776         +              Normal
  11/04/2026 07 PM PST           31.70            776         0              Normal
  11/04/2026 08 PM PST           31.68            769         -              Normal
  11/04/2026 09 PM PST           31.69            772         +              Normal
  11/04/2026 10 PM PST           31.69            772         0              Normal
  11/04/2026 11 PM PST           31.68            769         -              Normal
  11/05/2026 12 AM PST           31.68            769         0              Normal
  11/05/2026 01 AM PST           31.68            769         0              Normal
  11/05/2026 02 AM PST           31.67            765         -              Normal
  11/05/2026 03 AM PST           31.67            765         0              Normal
  11/05/2026 04 AM PST           31.67            765         0              Normal
  11/05/2026 05 AM PST           31.67            765         0              Normal
  11/05/2026 06 AM PST           31.66            762         -              Normal
  11/05/2026 07 AM PST           31.66            762         0              Normal
  11/05/2026 08 AM PST           31.67            765         +              Normal
  11/05/2026 09 AM PST           31.66            762         -              Normal
  11/05/2026 10 AM PST           31.67            765         +              Normal
  11/05/2026 11 AM PST           31.67            765         0              Normal
  11/05/2026 12 PM PST           31.65            759         -              Normal
  11/05/2026 01 PM PST           31.66            762         +              Normal
  11/05/2026 02 PM PST           31.66            762         0              Normal
  11/05/2026 03 PM PST           31.64            755         -              Normal
  11/05/2026 04 PM PST           31.65            759         +              Normal
  11/05/2026 05 PM PST           31.65            759         0              Normal
  11/05/2026 06 PM PST           31.65            759         0              Normal
  11/05/2026 07 PM PST           31.67            765         +              Normal
  11/05/2026 08 PM PST           31.66            762         -              Normal
  11/05/2026 09 PM PST           31.65            759         -              Normal
  11/05/2026 10 PM PST           31.65            759         0              Normal
  11/05/2026 11 PM PST           31.65            759         0              Normal
  11/06/2026 12 AM PST           31.65            759         0              Normal
  11/06/2026 01 AM PST           31.65            759         0              Normal
  11/06/2026 02 AM PST           31.65            759         0              Normal
  11/06/2026 03 AM PST           31.65            759         0              Normal
  11/06/2026 04 AM PST           31.65            759         0              Normal
  11/06/2026 05 AM PST           31.65            759         0              Normal
  11/06/2026 06 AM PST           31.65            759         0              Normal
  11/06/2026 07 AM PST           31.64            755         -              Normal
  11/06/2026 08 AM PST           31.65            759         +              Normal
  11/06/2026 09 AM PST           31.66            762         +              Normal
  11/06/2026 10 AM PST           31.66            762         0              Normal
  11/06/2026 11 AM PST           31.66            762         0              Normal
  11/06/2026 12 PM PST           31.66            762         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  11/06/2026 01 PM PST           31.66            762                        Normal
  11/06/2026 02 PM PST           31.65            759         -              Normal
  11/06/2026 03 PM PST           31.65            759         0              Normal
  11/06/2026 04 PM PST           31.65            759         0              Normal
  11/06/2026 05 PM PST           31.65            759         0              Normal
  11/06/2026 06 PM PST           31.65            759         0              Normal
  11/06/2026 07 PM PST           31.64            755         -              Normal
  11/06/2026 08 PM PST           31.64            755         0              Normal
  11/06/2026 09 PM PST           31.64            755         0              Normal
  11/06/2026 10 PM PST           31.64            755         0              Normal
  11/06/2026 11 PM PST           31.64            755         0              Normal
  11/07/2026 12 AM PST           31.64            755         0              Normal
  11/07/2026 01 AM PST           31.64            755         0              Normal
  11/07/2026 02 AM PST           31.63            752         -              Normal
  11/07/2026 03 AM PST           31.63            752         0              Normal
  11/07/2026 04 AM PST           31.63            752         0              Normal
  11/07/2026 05 AM PST           31.63            752         0              Normal
  11/07/2026 06 AM PST           31.63            752         0              Normal
  11/07/2026 07 AM PST           31.63            752         0              Normal
  11/07/2026 08 AM PST           31.62            748         -              Normal
  11/07/2026 09 AM PST           31.62            748         0              Normal
  11/07/2026 10 AM PST           31.62            748         0              Normal
  11/07/2026 11 AM PST           31.62            748         0              Normal
  11/07/2026 12 PM PST           31.62            748         0              Normal
  11/07/2026 01 PM PST           31.62            748         0              Normal
  11/07/2026 02 PM PST           31.61            745         -              Normal
  11/07/2026 03 PM PST           31.61            745         0              Normal
  11/07/2026 04 PM PST           31.61            745         0              Normal
  11/07/2026 05 PM PST           31.61            745         0              Normal
  11/07/2026 06 PM PST           31.61            745         0              Normal
  11/07/2026 07 PM PST           31.61            745         0              Normal
  11/07/2026 08 PM PST           31.60            742         -              Normal
  11/07/2026 09 PM PST           31.60            742         0              Normal
  11/07/2026 10 PM PST           31.60            742         0              Normal
  11/07/2026 11 PM PST           31.60            742         0              Normal
  11/08/2026 12 AM PST           31.60            742         0              Normal
  11/08/2026 01 AM PST           31.60            742         0              Normal
  11/08/2026 02 AM PST           31.59            738         -              Normal
  11/08/2026 03 AM PST           31.59            738         0              Normal
  11/08/2026 04 AM PST           31.59            738         0              Normal
  11/08/2026 05 AM PST           31.59            738         0              Normal
  11/08/2026 06 AM PST           31.59            738         0              Normal
  11/08/2026 07 AM PST           31.59            738         0              Normal
  11/08/2026 08 AM PST           31.59            738         0              Normal
  11/08/2026 09 AM PST           31.58            735         -              Normal
  11/08/2026 10 AM PST           31.58            735         0              Normal
  11/08/2026 11 AM PST           31.58            735         0              Normal
  11/08/2026 12 PM PST           31.58            735         0              Normal
  11/08/2026 01 PM PST           31.58            735         0              Normal
  11/08/2026 02 PM PST           31.58            735         0              Normal
  11/08/2026 03 PM PST           31.57            731         -              Normal
  11/08/2026 04 PM PST           31.57            731         0              Normal
  11/08/2026 05 PM PST           31.57            731         0              Normal
  11/08/2026 06 PM PST           31.57            731         0              Normal
  11/08/2026 07 PM PST           31.57            731         0              Normal
  11/08/2026 08 PM PST           31.57            731         0              Normal
  11/08/2026 09 PM PST           31.57            731         0              Normal
  11/08/2026 10 PM PST           31.57            731         0              Normal
  11/08/2026 11 PM PST           31.57            731         0              Normal
  11/09/2026 12 AM PST           31.56            728         -              Normal
  11/09/2026 01 AM PST           31.56            728         0              Normal
  11/09/2026 02 AM PST           31.56            728         0              Normal
  11/09/2026 03 AM PST           31.56            728         0              Normal
  11/09/2026 04 AM PST           31.56            728         0              Normal
  11/09/2026 05 AM PST           31.56            728         0              Normal
  11/09/2026 06 AM PST           31.56            728         0              Normal
  11/09/2026 07 AM PST           31.55            725         -              Normal
  11/09/2026 08 AM PST           31.55            725         0              Normal
  11/09/2026 09 AM PST           31.55            725         0              Normal
  11/09/2026 10 AM PST           31.55            725         0              Normal
  11/09/2026 11 AM PST           31.55            725         0              Normal
  11/09/2026 12 PM PST           31.55            725         0              Normal
  11/09/2026 01 PM PST           31.55            725         0              Normal
  11/09/2026 02 PM PST           31.55            725         0              Normal
  11/09/2026 03 PM PST           31.55            725         0              Normal
  11/09/2026 04 PM PST           31.55            725         0              Normal
  11/09/2026 05 PM PST           31.55            725         0              Normal
  11/09/2026 06 PM PST           31.54            721         -              Normal
  11/09/2026 07 PM PST           31.54            721         0              Normal
  11/09/2026 08 PM PST           31.54            721         0              Normal
  11/09/2026 09 PM PST           31.54            721         0              Normal
  11/09/2026 10 PM PST           31.54            721         0              Normal
  11/09/2026 11 PM PST           31.54            721         0              Normal
  11/10/2026 12 AM PST           31.54            721         0              Normal
  11/10/2026 01 AM PST           31.54            721         0              Normal
  11/10/2026 02 AM PST           31.54            721         0              Normal
  11/10/2026 03 AM PST           31.54            721         0              Normal
  11/10/2026 04 AM PST           31.54            721         0              Normal
  11/10/2026 05 AM PST           31.54            721         0              Normal
  11/10/2026 06 AM PST           31.53            718         -              Normal
  11/10/2026 07 AM PST           31.53            718         0              Normal
  11/10/2026 08 AM PST           31.53            718         0              Normal
  11/10/2026 09 AM PST           31.53            718         0              Normal
  11/10/2026 10 AM PST           31.53            718         0              Normal
  11/10/2026 11 AM PST           31.53            718         0              Normal
  11/10/2026 12 PM PST           31.53            718         0              Normal
  11/10/2026 01 PM PST           31.53            718         0              Normal
  11/10/2026 02 PM PST           31.53            718         0              Normal
  11/10/2026 03 PM PST           31.53            718         0              Normal
  11/10/2026 04 PM PST           31.53            718         0              Normal
  11/10/2026 05 PM PST           31.53            718         0              Normal
  11/10/2026 06 PM PST           31.52            715         -              Normal
  11/10/2026 07 PM PST           31.52            715         0              Normal
  11/10/2026 08 PM PST           31.52            715         0              Normal
  11/10/2026 09 PM PST           31.52            715         0              Normal
  11/10/2026 10 PM PST           31.52            715         0              Normal
  11/10/2026 11 PM PST           31.52            715         0              Normal
  11/11/2026 12 AM PST           31.52            715         0              Normal
  11/11/2026 01 AM PST           31.52            715         0              Normal
  11/11/2026 02 AM PST           31.52            715         0              Normal
  11/11/2026 03 AM PST           31.52            715         0              Normal
  11/11/2026 04 AM PST           31.52            715         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.