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: May 07 2026 at 7:37 AM PDTNext Issuance: May 08 2026 at 9:00 AM 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:  05/07/2026 at 07:38 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  05/02/2026 at 08:00 AM PDT
# Maximum Observed Stage:                       5.50 Feet
# Maximum Observed Flow:                        69 cfs
#
# Earliest Date & Time of Maximum Forecast:     05/07/2026 at 08:00 AM PDT
# Maximum Forecast Stage:                       5.40 Feet
# Maximum Forecast Flow:                        58 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  05/02/2026 07 AM PDT            5.50             69                Not Applicable
  05/02/2026 08 AM PDT            5.50             69         0      Not Applicable
  05/02/2026 09 AM PDT            5.49             68         -      Not Applicable
  05/02/2026 10 AM PDT            5.48             66         -      Not Applicable
  05/02/2026 11 AM PDT            5.49             68         +      Not Applicable
  05/02/2026 12 PM PDT            5.49             68         0      Not Applicable
  05/02/2026 01 PM PDT            5.49             68         0      Not Applicable
  05/02/2026 02 PM PDT            5.49             68         0      Not Applicable
  05/02/2026 03 PM PDT            5.49             68         0      Not Applicable
  05/02/2026 04 PM PDT            5.48             66         -      Not Applicable
  05/02/2026 05 PM PDT            5.48             66         0      Not Applicable
  05/02/2026 06 PM PDT            5.48             66         0      Not Applicable
  05/02/2026 07 PM PDT            5.48             66         0      Not Applicable
  05/02/2026 08 PM PDT            5.48             66         0      Not Applicable
  05/02/2026 09 PM PDT            5.48             66         0      Not Applicable
  05/02/2026 10 PM PDT            5.47             65         -      Not Applicable
  05/02/2026 11 PM PDT            5.47             65         0      Not Applicable
  05/03/2026 12 AM PDT            5.47             65         0      Not Applicable
  05/03/2026 01 AM PDT            5.47             65         0      Not Applicable
  05/03/2026 02 AM PDT            5.48             66         +      Not Applicable
  05/03/2026 03 AM PDT            5.48             66         0      Not Applicable
  05/03/2026 04 AM PDT            5.48             66         0      Not Applicable
  05/03/2026 05 AM PDT            5.48             66         0      Not Applicable
  05/03/2026 06 AM PDT            5.47             65         -      Not Applicable
  05/03/2026 07 AM PDT            5.47             65         0      Not Applicable
  05/03/2026 08 AM PDT            5.47             65         0      Not Applicable
  05/03/2026 09 AM PDT            5.47             65         0      Not Applicable
  05/03/2026 10 AM PDT            5.47             65         0      Not Applicable
  05/03/2026 11 AM PDT            5.47             65         0      Not Applicable
  05/03/2026 12 PM PDT            5.46             64         -      Not Applicable
  05/03/2026 01 PM PDT            5.46             64         0      Not Applicable
  05/03/2026 02 PM PDT            5.47             65         +      Not Applicable
  05/03/2026 03 PM PDT            5.47             65         0      Not Applicable
  05/03/2026 04 PM PDT            5.47             65         0      Not Applicable
  05/03/2026 05 PM PDT            5.46             64         -      Not Applicable
  05/03/2026 06 PM PDT            5.46             64         0      Not Applicable
  05/03/2026 07 PM PDT            5.46             64         0      Not Applicable
  05/03/2026 08 PM PDT            5.46             64         0      Not Applicable
  05/03/2026 09 PM PDT            5.46             64         0      Not Applicable
  05/03/2026 10 PM PDT            5.46             64         0      Not Applicable
  05/03/2026 11 PM PDT            5.46             64         0      Not Applicable
  05/04/2026 12 AM PDT            5.46             64         0      Not Applicable
  05/04/2026 01 AM PDT            5.46             64         0      Not Applicable
  05/04/2026 02 AM PDT            5.46             64         0      Not Applicable
  05/04/2026 03 AM PDT            5.46             64         0      Not Applicable
  05/04/2026 04 AM PDT            5.46             64         0      Not Applicable
  05/04/2026 05 AM PDT            5.46             64         0      Not Applicable
  05/04/2026 06 AM PDT            5.46             64         0      Not Applicable
  05/04/2026 07 AM PDT            5.45             63         -      Not Applicable
  05/04/2026 08 AM PDT            5.45             63         0      Not Applicable
  05/04/2026 09 AM PDT            5.45             63         0      Not Applicable
  05/04/2026 10 AM PDT            5.45             63         0      Not Applicable
  05/04/2026 11 AM PDT            5.45             63         0      Not Applicable
  05/04/2026 12 PM PDT            5.45             63         0      Not Applicable
  05/04/2026 01 PM PDT            5.45             63         0      Not Applicable
  05/04/2026 02 PM PDT            5.45             63         0      Not Applicable
  05/04/2026 03 PM PDT            5.45             63         0      Not Applicable
  05/04/2026 04 PM PDT            5.45             63         0      Not Applicable
  05/04/2026 05 PM PDT            5.45             63         0      Not Applicable
  05/04/2026 06 PM PDT            5.45             63         0      Not Applicable
  05/04/2026 07 PM PDT            5.45             63         0      Not Applicable
  05/04/2026 08 PM PDT            5.45             63         0      Not Applicable
  05/04/2026 09 PM PDT            5.44             62         -      Not Applicable
  05/04/2026 10 PM PDT            5.44             62         0      Not Applicable
  05/04/2026 11 PM PDT            5.44             62         0      Not Applicable
  05/05/2026 12 AM PDT            5.45             63         +      Not Applicable
  05/05/2026 01 AM PDT            5.45             63         0      Not Applicable
  05/05/2026 02 AM PDT            5.45             63         0      Not Applicable
  05/05/2026 03 AM PDT            5.46             64         +      Not Applicable
  05/05/2026 04 AM PDT            5.45             63         -      Not Applicable
  05/05/2026 05 AM PDT            5.45             63         0      Not Applicable
  05/05/2026 06 AM PDT            5.45             63         0      Not Applicable
  05/05/2026 07 AM PDT            5.45             63         0      Not Applicable
  05/05/2026 08 AM PDT            5.45             63         0      Not Applicable
  05/05/2026 09 AM PDT            5.45             63         0      Not Applicable
  05/05/2026 10 AM PDT            5.45             63         0      Not Applicable
  05/05/2026 11 AM PDT            5.44             62         -      Not Applicable
  05/05/2026 12 PM PDT            5.44             62         0      Not Applicable
  05/05/2026 01 PM PDT            5.44             62         0      Not Applicable
  05/05/2026 02 PM PDT            5.45             63         +      Not Applicable
  05/05/2026 03 PM PDT            5.45             63         0      Not Applicable
  05/05/2026 04 PM PDT            5.45             63         0      Not Applicable
  05/05/2026 05 PM PDT            5.45             63         0      Not Applicable
  05/05/2026 06 PM PDT            5.45             63         0      Not Applicable
  05/05/2026 07 PM PDT            5.45             63         0      Not Applicable
  05/05/2026 08 PM PDT            5.45             63         0      Not Applicable
  05/05/2026 09 PM PDT            5.44             62         -      Not Applicable
  05/05/2026 10 PM PDT            5.45             63         +      Not Applicable
  05/05/2026 11 PM PDT            5.45             63         0      Not Applicable
  05/06/2026 12 AM PDT            5.45             63         0      Not Applicable
  05/06/2026 01 AM PDT            5.45             63         0      Not Applicable
  05/06/2026 02 AM PDT            5.45             63         0      Not Applicable
  05/06/2026 03 AM PDT            5.45             63         0      Not Applicable
  05/06/2026 04 AM PDT            5.45             63         0      Not Applicable
  05/06/2026 05 AM PDT            5.45             63         0      Not Applicable
  05/06/2026 06 AM PDT            5.45             63         0      Not Applicable
  05/06/2026 07 AM PDT            5.44             62         -      Not Applicable
  05/06/2026 08 AM PDT            5.44             62         0      Not Applicable
  05/06/2026 09 AM PDT            5.44             62         0      Not Applicable
  05/06/2026 10 AM PDT            5.43             61         -      Not Applicable
  05/06/2026 11 AM PDT            5.43             61         0      Not Applicable
  05/06/2026 12 PM PDT            5.42             60         -      Not Applicable
  05/06/2026 01 PM PDT            5.43             61         +      Not Applicable
  05/06/2026 02 PM PDT            5.43             61         0      Not Applicable
  05/06/2026 03 PM PDT            5.42             60         -      Not Applicable
  05/06/2026 04 PM PDT            5.42             60         0      Not Applicable
  05/06/2026 05 PM PDT            5.42             60         0      Not Applicable
  05/06/2026 06 PM PDT            5.42             60         0      Not Applicable
  05/06/2026 07 PM PDT            5.42             60         0      Not Applicable
  05/06/2026 08 PM PDT            5.41             59         -      Not Applicable
  05/06/2026 09 PM PDT            5.41             59         0      Not Applicable
  05/06/2026 10 PM PDT            5.40             58         -      Not Applicable
  05/06/2026 11 PM PDT            5.40             58         0      Not Applicable
  05/07/2026 12 AM PDT            5.40             58         0      Not Applicable
  05/07/2026 01 AM PDT            5.40             58         0      Not Applicable
  05/07/2026 02 AM PDT            5.40             58         0      Not Applicable
  05/07/2026 03 AM PDT            5.40             58         0      Not Applicable
  05/07/2026 04 AM PDT            5.40             58         0      Not Applicable
  05/07/2026 05 AM PDT            5.40             58         0      Not Applicable
  05/07/2026 06 AM PDT            5.40             58         0      Not Applicable
  05/07/2026 07 AM PDT            5.40             58         0      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  05/07/2026 08 AM PDT            5.40             58                Not Applicable
  05/07/2026 09 AM PDT            5.40             58         0      Not Applicable
  05/07/2026 10 AM PDT            5.40             58         0      Not Applicable
  05/07/2026 11 AM PDT            5.40             58         0      Not Applicable
  05/07/2026 12 PM PDT            5.40             58         0      Not Applicable
  05/07/2026 01 PM PDT            5.40             58         0      Not Applicable
  05/07/2026 02 PM PDT            5.40             58         0      Not Applicable
  05/07/2026 03 PM PDT            5.40             58         0      Not Applicable
  05/07/2026 04 PM PDT            5.39             57         -      Not Applicable
  05/07/2026 05 PM PDT            5.39             57         0      Not Applicable
  05/07/2026 06 PM PDT            5.39             57         0      Not Applicable
  05/07/2026 07 PM PDT            5.39             57         0      Not Applicable
  05/07/2026 08 PM PDT            5.39             57         0      Not Applicable
  05/07/2026 09 PM PDT            5.39             57         0      Not Applicable
  05/07/2026 10 PM PDT            5.39             57         0      Not Applicable
  05/07/2026 11 PM PDT            5.39             57         0      Not Applicable
  05/08/2026 12 AM PDT            5.39             57         0      Not Applicable
  05/08/2026 01 AM PDT            5.39             57         0      Not Applicable
  05/08/2026 02 AM PDT            5.39             57         0      Not Applicable
  05/08/2026 03 AM PDT            5.39             57         0      Not Applicable
  05/08/2026 04 AM PDT            5.39             57         0      Not Applicable
  05/08/2026 05 AM PDT            5.39             57         0      Not Applicable
  05/08/2026 06 AM PDT            5.39             57         0      Not Applicable
  05/08/2026 07 AM PDT            5.39             57         0      Not Applicable
  05/08/2026 08 AM PDT            5.39             57         0      Not Applicable
  05/08/2026 09 AM PDT            5.39             57         0      Not Applicable
  05/08/2026 10 AM PDT            5.39             57         0      Not Applicable
  05/08/2026 11 AM PDT            5.39             57         0      Not Applicable
  05/08/2026 12 PM PDT            5.39             57         0      Not Applicable
  05/08/2026 01 PM PDT            5.39             57         0      Not Applicable
  05/08/2026 02 PM PDT            5.39             57         0      Not Applicable
  05/08/2026 03 PM PDT            5.38             56         -      Not Applicable
  05/08/2026 04 PM PDT            5.38             56         0      Not Applicable
  05/08/2026 05 PM PDT            5.38             56         0      Not Applicable
  05/08/2026 06 PM PDT            5.38             56         0      Not Applicable
  05/08/2026 07 PM PDT            5.38             56         0      Not Applicable
  05/08/2026 08 PM PDT            5.38             56         0      Not Applicable
  05/08/2026 09 PM PDT            5.38             56         0      Not Applicable
  05/08/2026 10 PM PDT            5.38             56         0      Not Applicable
  05/08/2026 11 PM PDT            5.38             56         0      Not Applicable
  05/09/2026 12 AM PDT            5.38             56         0      Not Applicable
  05/09/2026 01 AM PDT            5.38             56         0      Not Applicable
  05/09/2026 02 AM PDT            5.38             56         0      Not Applicable
  05/09/2026 03 AM PDT            5.38             56         0      Not Applicable
  05/09/2026 04 AM PDT            5.38             56         0      Not Applicable
  05/09/2026 05 AM PDT            5.38             56         0      Not Applicable
  05/09/2026 06 AM PDT            5.38             56         0      Not Applicable
  05/09/2026 07 AM PDT            5.38             56         0      Not Applicable
  05/09/2026 08 AM PDT            5.38             56         0      Not Applicable
  05/09/2026 09 AM PDT            5.38             56         0      Not Applicable
  05/09/2026 10 AM PDT            5.38             56         0      Not Applicable
  05/09/2026 11 AM PDT            5.38             56         0      Not Applicable
  05/09/2026 12 PM PDT            5.38             56         0      Not Applicable
  05/09/2026 01 PM PDT            5.38             56         0      Not Applicable
  05/09/2026 02 PM PDT            5.38             56         0      Not Applicable
  05/09/2026 03 PM PDT            5.38             56         0      Not Applicable
  05/09/2026 04 PM PDT            5.38             56         0      Not Applicable
  05/09/2026 05 PM PDT            5.37             55         -      Not Applicable
  05/09/2026 06 PM PDT            5.37             55         0      Not Applicable
  05/09/2026 07 PM PDT            5.37             55         0      Not Applicable
  05/09/2026 08 PM PDT            5.37             55         0      Not Applicable
  05/09/2026 09 PM PDT            5.37             55         0      Not Applicable
  05/09/2026 10 PM PDT            5.37             55         0      Not Applicable
  05/09/2026 11 PM PDT            5.37             55         0      Not Applicable
  05/10/2026 12 AM PDT            5.37             55         0      Not Applicable
  05/10/2026 01 AM PDT            5.37             55         0      Not Applicable
  05/10/2026 02 AM PDT            5.37             55         0      Not Applicable
  05/10/2026 03 AM PDT            5.37             55         0      Not Applicable
  05/10/2026 04 AM PDT            5.37             55         0      Not Applicable
  05/10/2026 05 AM PDT            5.37             55         0      Not Applicable
  05/10/2026 06 AM PDT            5.37             55         0      Not Applicable
  05/10/2026 07 AM PDT            5.37             55         0      Not Applicable
  05/10/2026 08 AM PDT            5.37             55         0      Not Applicable
  05/10/2026 09 AM PDT            5.37             55         0      Not Applicable
  05/10/2026 10 AM PDT            5.37             55         0      Not Applicable
  05/10/2026 11 AM PDT            5.37             55         0      Not Applicable
  05/10/2026 12 PM PDT            5.37             55         0      Not Applicable
  05/10/2026 01 PM PDT            5.37             55         0      Not Applicable
  05/10/2026 02 PM PDT            5.37             55         0      Not Applicable
  05/10/2026 03 PM PDT            5.37             55         0      Not Applicable
  05/10/2026 04 PM PDT            5.37             55         0      Not Applicable
  05/10/2026 05 PM PDT            5.37             55         0      Not Applicable
  05/10/2026 06 PM PDT            5.37             55         0      Not Applicable
  05/10/2026 07 PM PDT            5.37             55         0      Not Applicable
  05/10/2026 08 PM PDT            5.36             54         -      Not Applicable
  05/10/2026 09 PM PDT            5.36             54         0      Not Applicable
  05/10/2026 10 PM PDT            5.36             54         0      Not Applicable
  05/10/2026 11 PM PDT            5.36             54         0      Not Applicable
  05/11/2026 12 AM PDT            5.36             54         0      Not Applicable
  05/11/2026 01 AM PDT            5.36             54         0      Not Applicable
  05/11/2026 02 AM PDT            5.36             54         0      Not Applicable
  05/11/2026 03 AM PDT            5.36             54         0      Not Applicable
  05/11/2026 04 AM PDT            5.36             54         0      Not Applicable
  05/11/2026 05 AM PDT            5.36             54         0      Not Applicable
  05/11/2026 06 AM PDT            5.36             54         0      Not Applicable
  05/11/2026 07 AM PDT            5.36             54         0      Not Applicable
  05/11/2026 08 AM PDT            5.36             54         0      Not Applicable
  05/11/2026 09 AM PDT            5.36             54         0      Not Applicable
  05/11/2026 10 AM PDT            5.36             54         0      Not Applicable
  05/11/2026 11 AM PDT            5.36             54         0      Not Applicable
  05/11/2026 12 PM PDT            5.36             54         0      Not Applicable
  05/11/2026 01 PM PDT            5.36             54         0      Not Applicable
  05/11/2026 02 PM PDT            5.36             54         0      Not Applicable
  05/11/2026 03 PM PDT            5.36             54         0      Not Applicable
  05/11/2026 04 PM PDT            5.36             54         0      Not Applicable
  05/11/2026 05 PM PDT            5.36             54         0      Not Applicable
  05/11/2026 06 PM PDT            5.36             54         0      Not Applicable
  05/11/2026 07 PM PDT            5.36             54         0      Not Applicable
  05/11/2026 08 PM PDT            5.36             54         0      Not Applicable
  05/11/2026 09 PM PDT            5.36             54         0      Not Applicable
  05/11/2026 10 PM PDT            5.36             54         0      Not Applicable
  05/11/2026 11 PM PDT            5.35             53         -      Not Applicable
  05/12/2026 12 AM PDT            5.35             53         0      Not Applicable
  05/12/2026 01 AM PDT            5.35             53         0      Not Applicable
  05/12/2026 02 AM PDT            5.35             53         0      Not Applicable
  05/12/2026 03 AM PDT            5.35             53         0      Not Applicable
  05/12/2026 04 AM PDT            5.35             53         0      Not Applicable
  05/12/2026 05 AM PDT            5.35             53         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.