SOUTH FORK GUALALA RIVER - SEA RANCH (GSRC1)
Latitude: 38.71º NLongitude: 123.43º WElevation: 40 FeetForecast Type: Unofficial Location
Location: Sonoma County in CaliforniaBulletin Group: Russian NapaRiver Group: Russian Napa
Issuance Time: Apr 06 2026 at 7:06 AM PDTNext Issuance: Apr 06 2026 at 3:00 PM PDT
Action/Monitor: N/A Minor Flood: N/A Moderate Flood: N/A Major Flood: N/A

# Tabular Observed and Forecast Hydrograph Information
#
# Location: South Fork Gualala River - Sea Ranch (GSRC1)
#
# File Generation Time:  04/06/2026 at 07:07 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  04/02/2026 at 07:00 PM PDT
# Maximum Observed Stage:                       5.78 Feet
# Maximum Observed Flow:                        103 cfs
#
# Earliest Date & Time of Maximum Forecast:     04/06/2026 at 08:00 AM PDT
# Maximum Forecast Stage:                       5.43 Feet
# Maximum Forecast Flow:                        61 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  04/01/2026 07 AM PDT            5.58             78                Not Applicable
  04/01/2026 08 AM PDT            5.58             78         0      Not Applicable
  04/01/2026 09 AM PDT            5.58             78         0      Not Applicable
  04/01/2026 10 AM PDT            5.59             79         +      Not Applicable
  04/01/2026 11 AM PDT            5.61             82         +      Not Applicable
  04/01/2026 12 PM PDT            5.61             82         0      Not Applicable
  04/01/2026 01 PM PDT            5.62             83         +      Not Applicable
  04/01/2026 02 PM PDT            5.63             84         +      Not Applicable
  04/01/2026 03 PM PDT            5.63             84         0      Not Applicable
  04/01/2026 04 PM PDT            5.63             84         0      Not Applicable
  04/01/2026 05 PM PDT            5.63             84         0      Not Applicable
  04/01/2026 06 PM PDT            5.64             86         +      Not Applicable
  04/01/2026 07 PM PDT            5.64             86         0      Not Applicable
  04/01/2026 08 PM PDT            5.65             87         +      Not Applicable
  04/01/2026 09 PM PDT            5.65             87         0      Not Applicable
  04/01/2026 10 PM PDT            5.65             87         0      Not Applicable
  04/01/2026 11 PM PDT            5.66             88         +      Not Applicable
  04/02/2026 12 AM PDT            5.66             88         0      Not Applicable
  04/02/2026 01 AM PDT            5.66             88         0      Not Applicable
  04/02/2026 02 AM PDT            5.67             90         +      Not Applicable
  04/02/2026 03 AM PDT            5.67             90         0      Not Applicable
  04/02/2026 04 AM PDT            5.67             90         0      Not Applicable
  04/02/2026 05 AM PDT            5.68             91         +      Not Applicable
  04/02/2026 06 AM PDT            5.68             91         0      Not Applicable
  04/02/2026 07 AM PDT            5.68             91         0      Not Applicable
  04/02/2026 08 AM PDT            5.69             92         +      Not Applicable
  04/02/2026 09 AM PDT            5.70             94         +      Not Applicable
  04/02/2026 10 AM PDT            5.71             95         +      Not Applicable
  04/02/2026 11 AM PDT            5.72             96         +      Not Applicable
  04/02/2026 12 PM PDT            5.74             98         +      Not Applicable
  04/02/2026 01 PM PDT            5.76            101         +      Not Applicable
  04/02/2026 02 PM PDT            5.76            101         0      Not Applicable
  04/02/2026 03 PM PDT            5.78            103         +      Not Applicable
  04/02/2026 04 PM PDT            5.78            103         0      Not Applicable
  04/02/2026 05 PM PDT            5.78            103         0      Not Applicable
  04/02/2026 06 PM PDT            5.78            103         0      Not Applicable
  04/02/2026 07 PM PDT            5.78            103         0      Not Applicable
  04/02/2026 08 PM PDT            5.77            102         -      Not Applicable
  04/02/2026 09 PM PDT            5.76            101         -      Not Applicable
  04/02/2026 10 PM PDT            5.75            100         -      Not Applicable
  04/02/2026 11 PM PDT            5.73             97         -      Not Applicable
  04/03/2026 12 AM PDT            5.71             95         -      Not Applicable
  04/03/2026 01 AM PDT            5.70             94         -      Not Applicable
  04/03/2026 02 AM PDT            5.69             92         -      Not Applicable
  04/03/2026 03 AM PDT            5.67             90         -      Not Applicable
  04/03/2026 04 AM PDT            5.66             88         -      Not Applicable
  04/03/2026 05 AM PDT            5.65             87         -      Not Applicable
  04/03/2026 06 AM PDT            5.64             86         -      Not Applicable
  04/03/2026 07 AM PDT            5.63             84         -      Not Applicable
  04/03/2026 08 AM PDT            5.62             83         -      Not Applicable
  04/03/2026 09 AM PDT            5.61             82         -      Not Applicable
  04/03/2026 10 AM PDT            5.60             81         -      Not Applicable
  04/03/2026 11 AM PDT            5.59             79         -      Not Applicable
  04/03/2026 12 PM PDT            5.58             78         -      Not Applicable
  04/03/2026 01 PM PDT            5.57             77         -      Not Applicable
  04/03/2026 02 PM PDT            5.57             77         0      Not Applicable
  04/03/2026 03 PM PDT            5.56             76         -      Not Applicable
  04/03/2026 04 PM PDT            5.55             75         -      Not Applicable
  04/03/2026 05 PM PDT            5.55             75         0      Not Applicable
  04/03/2026 06 PM PDT            5.55             75         0      Not Applicable
  04/03/2026 07 PM PDT            5.55             75         0      Not Applicable
  04/03/2026 08 PM PDT            5.55             75         0      Not Applicable
  04/03/2026 09 PM PDT            5.54             73         -      Not Applicable
  04/03/2026 10 PM PDT            5.54             73         0      Not Applicable
  04/03/2026 11 PM PDT            5.53             72         -      Not Applicable
  04/04/2026 12 AM PDT            5.53             72         0      Not Applicable
  04/04/2026 01 AM PDT            5.53             72         0      Not Applicable
  04/04/2026 02 AM PDT            5.53             72         0      Not Applicable
  04/04/2026 03 AM PDT            5.52             71         -      Not Applicable
  04/04/2026 04 AM PDT            5.52             71         0      Not Applicable
  04/04/2026 05 AM PDT            5.52             71         0      Not Applicable
  04/04/2026 06 AM PDT            5.52             71         0      Not Applicable
  04/04/2026 07 AM PDT            5.51             70         -      Not Applicable
  04/04/2026 08 AM PDT            5.50             69         -      Not Applicable
  04/04/2026 09 AM PDT            5.50             69         0      Not Applicable
  04/04/2026 10 AM PDT            5.50             69         0      Not Applicable
  04/04/2026 11 AM PDT            5.50             69         0      Not Applicable
  04/04/2026 12 PM PDT            5.50             69         0      Not Applicable
  04/04/2026 01 PM PDT            5.50             69         0      Not Applicable
  04/04/2026 02 PM PDT            5.49             68         -      Not Applicable
  04/04/2026 03 PM PDT            5.49             68         0      Not Applicable
  04/04/2026 04 PM PDT            5.49             68         0      Not Applicable
  04/04/2026 05 PM PDT            5.49             68         0      Not Applicable
  04/04/2026 06 PM PDT            5.49             68         0      Not Applicable
  04/04/2026 07 PM PDT            5.49             68         0      Not Applicable
  04/04/2026 08 PM PDT            5.48             66         -      Not Applicable
  04/04/2026 09 PM PDT            5.47             65         -      Not Applicable
  04/04/2026 10 PM PDT            5.47             65         0      Not Applicable
  04/04/2026 11 PM PDT            5.48             66         +      Not Applicable
  04/05/2026 12 AM PDT            5.48             66         0      Not Applicable
  04/05/2026 01 AM PDT            5.48             66         0      Not Applicable
  04/05/2026 02 AM PDT            5.48             66         0      Not Applicable
  04/05/2026 03 AM PDT            5.47             65         -      Not Applicable
  04/05/2026 04 AM PDT            5.47             65         0      Not Applicable
  04/05/2026 05 AM PDT            5.47             65         0      Not Applicable
  04/05/2026 06 AM PDT            5.47             65         0      Not Applicable
  04/05/2026 07 AM PDT            5.47             65         0      Not Applicable
  04/05/2026 08 AM PDT            5.47             65         0      Not Applicable
  04/05/2026 09 AM PDT            5.46             64         -      Not Applicable
  04/05/2026 10 AM PDT            5.46             64         0      Not Applicable
  04/05/2026 11 AM PDT            5.45             63         -      Not Applicable
  04/05/2026 12 PM PDT            5.45             63         0      Not Applicable
  04/05/2026 01 PM PDT            5.45             63         0      Not Applicable
  04/05/2026 02 PM PDT            5.45             63         0      Not Applicable
  04/05/2026 03 PM PDT            5.45             63         0      Not Applicable
  04/05/2026 04 PM PDT            5.44             62         -      Not Applicable
  04/05/2026 05 PM PDT            5.44             62         0      Not Applicable
  04/05/2026 06 PM PDT            5.44             62         0      Not Applicable
  04/05/2026 07 PM PDT            5.44             62         0      Not Applicable
  04/05/2026 08 PM PDT            5.44             62         0      Not Applicable
  04/05/2026 09 PM PDT            5.44             62         0      Not Applicable
  04/05/2026 10 PM PDT            5.43             61         -      Not Applicable
  04/05/2026 11 PM PDT            5.43             61         0      Not Applicable
  04/06/2026 12 AM PDT            5.43             61         0      Not Applicable
  04/06/2026 01 AM PDT            5.43             61         0      Not Applicable
  04/06/2026 02 AM PDT            5.44             62         +      Not Applicable
  04/06/2026 03 AM PDT            5.44             62         0      Not Applicable
  04/06/2026 04 AM PDT            5.43             61         -      Not Applicable
  04/06/2026 05 AM PDT            5.43             61         0      Not Applicable
  04/06/2026 06 AM PDT            5.43             61         0      Not Applicable
  04/06/2026 07 AM PDT            5.43             61         0      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  04/06/2026 08 AM PDT            5.43             61                Not Applicable
  04/06/2026 09 AM PDT            5.43             61         0      Not Applicable
  04/06/2026 10 AM PDT            5.43             61         0      Not Applicable
  04/06/2026 11 AM PDT            5.43             61         0      Not Applicable
  04/06/2026 12 PM PDT            5.43             61         0      Not Applicable
  04/06/2026 01 PM PDT            5.42             60         -      Not Applicable
  04/06/2026 02 PM PDT            5.42             60         0      Not Applicable
  04/06/2026 03 PM PDT            5.42             60         0      Not Applicable
  04/06/2026 04 PM PDT            5.42             60         0      Not Applicable
  04/06/2026 05 PM PDT            5.42             60         0      Not Applicable
  04/06/2026 06 PM PDT            5.42             60         0      Not Applicable
  04/06/2026 07 PM PDT            5.42             60         0      Not Applicable
  04/06/2026 08 PM PDT            5.42             60         0      Not Applicable
  04/06/2026 09 PM PDT            5.42             60         0      Not Applicable
  04/06/2026 10 PM PDT            5.42             60         0      Not Applicable
  04/06/2026 11 PM PDT            5.42             60         0      Not Applicable
  04/07/2026 12 AM PDT            5.42             60         0      Not Applicable
  04/07/2026 01 AM PDT            5.42             60         0      Not Applicable
  04/07/2026 02 AM PDT            5.42             60         0      Not Applicable
  04/07/2026 03 AM PDT            5.42             60         0      Not Applicable
  04/07/2026 04 AM PDT            5.42             60         0      Not Applicable
  04/07/2026 05 AM PDT            5.42             60         0      Not Applicable
  04/07/2026 06 AM PDT            5.42             60         0      Not Applicable
  04/07/2026 07 AM PDT            5.41             59         -      Not Applicable
  04/07/2026 08 AM PDT            5.41             59         0      Not Applicable
  04/07/2026 09 AM PDT            5.41             59         0      Not Applicable
  04/07/2026 10 AM PDT            5.41             59         0      Not Applicable
  04/07/2026 11 AM PDT            5.41             59         0      Not Applicable
  04/07/2026 12 PM PDT            5.41             59         0      Not Applicable
  04/07/2026 01 PM PDT            5.41             59         0      Not Applicable
  04/07/2026 02 PM PDT            5.41             59         0      Not Applicable
  04/07/2026 03 PM PDT            5.41             59         0      Not Applicable
  04/07/2026 04 PM PDT            5.41             59         0      Not Applicable
  04/07/2026 05 PM PDT            5.41             59         0      Not Applicable
  04/07/2026 06 PM PDT            5.41             59         0      Not Applicable
  04/07/2026 07 PM PDT            5.41             59         0      Not Applicable
  04/07/2026 08 PM PDT            5.41             59         0      Not Applicable
  04/07/2026 09 PM PDT            5.41             59         0      Not Applicable
  04/07/2026 10 PM PDT            5.41             59         0      Not Applicable
  04/07/2026 11 PM PDT            5.41             59         0      Not Applicable
  04/08/2026 12 AM PDT            5.41             59         0      Not Applicable
  04/08/2026 01 AM PDT            5.40             58         -      Not Applicable
  04/08/2026 02 AM PDT            5.40             58         0      Not Applicable
  04/08/2026 03 AM PDT            5.40             58         0      Not Applicable
  04/08/2026 04 AM PDT            5.40             58         0      Not Applicable
  04/08/2026 05 AM PDT            5.40             58         0      Not Applicable
  04/08/2026 06 AM PDT            5.40             58         0      Not Applicable
  04/08/2026 07 AM PDT            5.40             58         0      Not Applicable
  04/08/2026 08 AM PDT            5.40             58         0      Not Applicable
  04/08/2026 09 AM PDT            5.40             58         0      Not Applicable
  04/08/2026 10 AM PDT            5.40             58         0      Not Applicable
  04/08/2026 11 AM PDT            5.40             58         0      Not Applicable
  04/08/2026 12 PM PDT            5.40             58         0      Not Applicable
  04/08/2026 01 PM PDT            5.40             58         0      Not Applicable
  04/08/2026 02 PM PDT            5.40             58         0      Not Applicable
  04/08/2026 03 PM PDT            5.40             58         0      Not Applicable
  04/08/2026 04 PM PDT            5.39             57         -      Not Applicable
  04/08/2026 05 PM PDT            5.39             57         0      Not Applicable
  04/08/2026 06 PM PDT            5.39             57         0      Not Applicable
  04/08/2026 07 PM PDT            5.39             57         0      Not Applicable
  04/08/2026 08 PM PDT            5.39             57         0      Not Applicable
  04/08/2026 09 PM PDT            5.39             57         0      Not Applicable
  04/08/2026 10 PM PDT            5.39             57         0      Not Applicable
  04/08/2026 11 PM PDT            5.39             57         0      Not Applicable
  04/09/2026 12 AM PDT            5.39             57         0      Not Applicable
  04/09/2026 01 AM PDT            5.39             57         0      Not Applicable
  04/09/2026 02 AM PDT            5.39             57         0      Not Applicable
  04/09/2026 03 AM PDT            5.39             57         0      Not Applicable
  04/09/2026 04 AM PDT            5.39             57         0      Not Applicable
  04/09/2026 05 AM PDT            5.39             57         0      Not Applicable
  04/09/2026 06 AM PDT            5.39             57         0      Not Applicable
  04/09/2026 07 AM PDT            5.39             57         0      Not Applicable
  04/09/2026 08 AM PDT            5.39             57         0      Not Applicable
  04/09/2026 09 AM PDT            5.38             56         -      Not Applicable
  04/09/2026 10 AM PDT            5.38             56         0      Not Applicable
  04/09/2026 11 AM PDT            5.38             56         0      Not Applicable
  04/09/2026 12 PM PDT            5.38             56         0      Not Applicable
  04/09/2026 01 PM PDT            5.38             56         0      Not Applicable
  04/09/2026 02 PM PDT            5.39             57         +      Not Applicable
  04/09/2026 03 PM PDT            5.39             57         0      Not Applicable
  04/09/2026 04 PM PDT            5.39             57         0      Not Applicable
  04/09/2026 05 PM PDT            5.39             57         0      Not Applicable
  04/09/2026 06 PM PDT            5.39             57         0      Not Applicable
  04/09/2026 07 PM PDT            5.39             57         0      Not Applicable
  04/09/2026 08 PM PDT            5.40             58         +      Not Applicable
  04/09/2026 09 PM PDT            5.40             58         0      Not Applicable
  04/09/2026 10 PM PDT            5.41             59         +      Not Applicable
  04/09/2026 11 PM PDT            5.41             59         0      Not Applicable
  04/10/2026 12 AM PDT            5.41             59         0      Not Applicable
  04/10/2026 01 AM PDT            5.41             59         0      Not Applicable
  04/10/2026 02 AM PDT            5.42             60         +      Not Applicable
  04/10/2026 03 AM PDT            5.41             59         -      Not Applicable
  04/10/2026 04 AM PDT            5.41             59         0      Not Applicable
  04/10/2026 05 AM PDT            5.41             59         0      Not Applicable
  04/10/2026 06 AM PDT            5.41             59         0      Not Applicable
  04/10/2026 07 AM PDT            5.41             59         0      Not Applicable
  04/10/2026 08 AM PDT            5.40             58         -      Not Applicable
  04/10/2026 09 AM PDT            5.40             58         0      Not Applicable
  04/10/2026 10 AM PDT            5.40             58         0      Not Applicable
  04/10/2026 11 AM PDT            5.40             58         0      Not Applicable
  04/10/2026 12 PM PDT            5.40             58         0      Not Applicable
  04/10/2026 01 PM PDT            5.40             58         0      Not Applicable
  04/10/2026 02 PM PDT            5.39             57         -      Not Applicable
  04/10/2026 03 PM PDT            5.39             57         0      Not Applicable
  04/10/2026 04 PM PDT            5.39             57         0      Not Applicable
  04/10/2026 05 PM PDT            5.40             58         +      Not Applicable
  04/10/2026 06 PM PDT            5.40             58         0      Not Applicable
  04/10/2026 07 PM PDT            5.40             58         0      Not Applicable
  04/10/2026 08 PM PDT            5.41             59         +      Not Applicable
  04/10/2026 09 PM PDT            5.41             59         0      Not Applicable
  04/10/2026 10 PM PDT            5.42             60         +      Not Applicable
  04/10/2026 11 PM PDT            5.42             60         0      Not Applicable
  04/11/2026 12 AM PDT            5.42             60         0      Not Applicable
  04/11/2026 01 AM PDT            5.43             61         +      Not Applicable
  04/11/2026 02 AM PDT            5.43             61         0      Not Applicable
  04/11/2026 03 AM PDT            5.42             60         -      Not Applicable
  04/11/2026 04 AM PDT            5.42             60         0      Not Applicable
  04/11/2026 05 AM PDT            5.42             60         0      Not Applicable
#
# 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.