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: Oct 31 2026 at 8:45 AM PDTNext Issuance: Nov 01 2026 at 9:00 AM PST
Action: 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:  10/31/2026 at 08:46 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  10/31/2026 at 08:00 AM PDT
# Maximum Observed Stage:                       4.53 Feet
# Maximum Observed Flow:                        1 cfs
#
# Earliest Date & Time of Maximum Forecast:     11/04/2026 at 04:00 AM PST
# Maximum Forecast Stage:                       4.80 Feet
# Maximum Forecast Flow:                        7 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  10/26/2026 08 AM PDT            4.52              1                Not Applicable
  10/26/2026 09 AM PDT            4.52              1         0      Not Applicable
  10/26/2026 10 AM PDT            4.52              1         0      Not Applicable
  10/26/2026 11 AM PDT            4.52              1         0      Not Applicable
  10/26/2026 12 PM PDT            4.52              1         0      Not Applicable
  10/26/2026 01 PM PDT            4.52              1         0      Not Applicable
  10/26/2026 02 PM PDT            4.52              1         0      Not Applicable
  10/26/2026 03 PM PDT            4.52              1         0      Not Applicable
  10/26/2026 04 PM PDT            4.52              1         0      Not Applicable
  10/26/2026 05 PM PDT            4.52              1         0      Not Applicable
  10/26/2026 06 PM PDT            4.52              1         0      Not Applicable
  10/26/2026 07 PM PDT            4.52              1         0      Not Applicable
  10/26/2026 08 PM PDT            4.52              1         0      Not Applicable
  10/26/2026 09 PM PDT            4.52              1         0      Not Applicable
  10/26/2026 10 PM PDT            4.52              1         0      Not Applicable
  10/26/2026 11 PM PDT            4.52              1         0      Not Applicable
  10/27/2026 12 AM PDT            4.52              1         0      Not Applicable
  10/27/2026 01 AM PDT            4.52              1         0      Not Applicable
  10/27/2026 02 AM PDT            4.52              1         0      Not Applicable
  10/27/2026 03 AM PDT            4.52              1         0      Not Applicable
  10/27/2026 04 AM PDT            4.52              1         0      Not Applicable
  10/27/2026 05 AM PDT            4.52              1         0      Not Applicable
  10/27/2026 06 AM PDT            4.52              1         0      Not Applicable
  10/27/2026 07 AM PDT            4.52              1         0      Not Applicable
  10/27/2026 08 AM PDT            4.52              1         0      Not Applicable
  10/27/2026 09 AM PDT            4.52              1         0      Not Applicable
  10/27/2026 10 AM PDT            4.52              1         0      Not Applicable
  10/27/2026 11 AM PDT            4.52              1         0      Not Applicable
  10/27/2026 12 PM PDT            4.52              1         0      Not Applicable
  10/27/2026 01 PM PDT            4.52              1         0      Not Applicable
  10/27/2026 02 PM PDT            4.52              1         0      Not Applicable
  10/27/2026 03 PM PDT            4.52              1         0      Not Applicable
  10/27/2026 04 PM PDT            4.52              1         0      Not Applicable
  10/27/2026 05 PM PDT            4.52              1         0      Not Applicable
  10/27/2026 06 PM PDT            4.52              1         0      Not Applicable
  10/27/2026 07 PM PDT            4.52              1         0      Not Applicable
  10/27/2026 08 PM PDT            4.52              1         0      Not Applicable
  10/27/2026 09 PM PDT            4.52              1         0      Not Applicable
  10/27/2026 10 PM PDT            4.52              1         0      Not Applicable
  10/27/2026 11 PM PDT            4.52              1         0      Not Applicable
  10/28/2026 12 AM PDT            4.52              1         0      Not Applicable
  10/28/2026 01 AM PDT            4.52              1         0      Not Applicable
  10/28/2026 02 AM PDT            4.53              1         +      Not Applicable
  10/28/2026 03 AM PDT            4.52              1         -      Not Applicable
  10/28/2026 04 AM PDT            4.53              1         +      Not Applicable
  10/28/2026 05 AM PDT            4.52              1         -      Not Applicable
  10/28/2026 06 AM PDT            4.52              1         0      Not Applicable
  10/28/2026 07 AM PDT            4.52              1         0      Not Applicable
  10/28/2026 08 AM PDT            4.52              1         0      Not Applicable
  10/28/2026 09 AM PDT            4.52              1         0      Not Applicable
  10/28/2026 10 AM PDT            4.52              1         0      Not Applicable
  10/28/2026 11 AM PDT            4.52              1         0      Not Applicable
  10/28/2026 12 PM PDT            4.52              1         0      Not Applicable
  10/28/2026 01 PM PDT            4.52              1         0      Not Applicable
  10/28/2026 02 PM PDT            4.52              1         0      Not Applicable
  10/28/2026 03 PM PDT            4.52              1         0      Not Applicable
  10/28/2026 04 PM PDT            4.53              1         +      Not Applicable
  10/28/2026 05 PM PDT            4.53              1         0      Not Applicable
  10/28/2026 06 PM PDT            4.53              1         0      Not Applicable
  10/28/2026 07 PM PDT            4.53              1         0      Not Applicable
  10/28/2026 08 PM PDT            4.53              1         0      Not Applicable
  10/28/2026 09 PM PDT            4.53              1         0      Not Applicable
  10/28/2026 10 PM PDT            4.53              1         0      Not Applicable
  10/28/2026 11 PM PDT            4.53              1         0      Not Applicable
  10/29/2026 12 AM PDT            4.53              1         0      Not Applicable
  10/29/2026 01 AM PDT            4.53              1         0      Not Applicable
  10/29/2026 02 AM PDT            4.53              1         0      Not Applicable
  10/29/2026 03 AM PDT            4.53              1         0      Not Applicable
  10/29/2026 04 AM PDT            4.53              1         0      Not Applicable
  10/29/2026 05 AM PDT            4.53              1         0      Not Applicable
  10/29/2026 06 AM PDT            4.53              1         0      Not Applicable
  10/29/2026 07 AM PDT            4.53              1         0      Not Applicable
  10/29/2026 08 AM PDT            4.53              1         0      Not Applicable
  10/29/2026 09 AM PDT            4.53              1         0      Not Applicable
  10/29/2026 10 AM PDT            4.53              1         0      Not Applicable
  10/29/2026 11 AM PDT            4.53              1         0      Not Applicable
  10/29/2026 12 PM PDT            4.53              1         0      Not Applicable
  10/29/2026 01 PM PDT            4.53              1         0      Not Applicable
  10/29/2026 02 PM PDT            4.53              1         0      Not Applicable
  10/29/2026 03 PM PDT            4.53              1         0      Not Applicable
  10/29/2026 04 PM PDT            4.53              1         0      Not Applicable
  10/29/2026 05 PM PDT            4.53              1         0      Not Applicable
  10/29/2026 06 PM PDT            4.53              1         0      Not Applicable
  10/29/2026 07 PM PDT            4.53              1         0      Not Applicable
  10/29/2026 08 PM PDT            4.53              1         0      Not Applicable
  10/29/2026 09 PM PDT            4.53              1         0      Not Applicable
  10/29/2026 10 PM PDT            4.53              1         0      Not Applicable
  10/29/2026 11 PM PDT            4.53              1         0      Not Applicable
  10/30/2026 12 AM PDT            4.53              1         0      Not Applicable
  10/30/2026 01 AM PDT            4.53              1         0      Not Applicable
  10/30/2026 02 AM PDT            4.53              1         0      Not Applicable
  10/30/2026 03 AM PDT            4.53              1         0      Not Applicable
  10/30/2026 04 AM PDT            4.53              1         0      Not Applicable
  10/30/2026 05 AM PDT            4.53              1         0      Not Applicable
  10/30/2026 06 AM PDT            4.53              1         0      Not Applicable
  10/30/2026 07 AM PDT            4.53              1         0      Not Applicable
  10/30/2026 08 AM PDT            4.53              1         0      Not Applicable
  10/30/2026 09 AM PDT            4.53              1         0      Not Applicable
  10/30/2026 10 AM PDT            4.53              1         0      Not Applicable
  10/30/2026 11 AM PDT            4.53              1         0      Not Applicable
  10/30/2026 12 PM PDT            4.53              1         0      Not Applicable
  10/30/2026 01 PM PDT            4.53              1         0      Not Applicable
  10/30/2026 02 PM PDT            4.53              1         0      Not Applicable
  10/30/2026 03 PM PDT            4.53              1         0      Not Applicable
  10/30/2026 04 PM PDT            4.53              1         0      Not Applicable
  10/30/2026 05 PM PDT            4.53              1         0      Not Applicable
  10/30/2026 06 PM PDT            4.53              1         0      Not Applicable
  10/30/2026 07 PM PDT            4.53              1         0      Not Applicable
  10/30/2026 08 PM PDT            4.53              1         0      Not Applicable
  10/30/2026 09 PM PDT            4.53              1         0      Not Applicable
  10/30/2026 10 PM PDT            4.53              1         0      Not Applicable
  10/30/2026 11 PM PDT            4.53              1         0      Not Applicable
  10/31/2026 12 AM PDT            4.53              1         0      Not Applicable
  10/31/2026 01 AM PDT            4.53              1         0      Not Applicable
  10/31/2026 02 AM PDT            4.53              1         0      Not Applicable
  10/31/2026 03 AM PDT            4.53              1         0      Not Applicable
  10/31/2026 04 AM PDT            4.53              1         0      Not Applicable
  10/31/2026 05 AM PDT            4.53              1         0      Not Applicable
  10/31/2026 06 AM PDT            4.53              1         0      Not Applicable
  10/31/2026 07 AM PDT            4.53              1         0      Not Applicable
  10/31/2026 08 AM PDT            4.53              1         0      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  10/31/2026 09 AM PDT            4.53              1                Not Applicable
  10/31/2026 10 AM PDT            4.53              1         0      Not Applicable
  10/31/2026 11 AM PDT            4.53              1         0      Not Applicable
  10/31/2026 12 PM PDT            4.53              1         0      Not Applicable
  10/31/2026 01 PM PDT            4.53              1         0      Not Applicable
  10/31/2026 02 PM PDT            4.53              1         0      Not Applicable
  10/31/2026 03 PM PDT            4.53              1         0      Not Applicable
  10/31/2026 04 PM PDT            4.53              1         0      Not Applicable
  10/31/2026 05 PM PDT            4.53              1         0      Not Applicable
  10/31/2026 06 PM PDT            4.53              1         0      Not Applicable
  10/31/2026 07 PM PDT            4.53              1         0      Not Applicable
  10/31/2026 08 PM PDT            4.53              1         0      Not Applicable
  10/31/2026 09 PM PDT            4.53              1         0      Not Applicable
  10/31/2026 10 PM PDT            4.53              1         0      Not Applicable
  10/31/2026 11 PM PDT            4.53              1         0      Not Applicable
  11/01/2026 12 AM PDT            4.53              1         0      Not Applicable
  11/01/2026 01 AM PDT            4.53              1         0      Not Applicable
  11/01/2026 01 AM PST            4.53              1         0      Not Applicable
  11/01/2026 02 AM PST            4.53              1         0      Not Applicable
  11/01/2026 03 AM PST            4.53              1         0      Not Applicable
  11/01/2026 04 AM PST            4.54              1         +      Not Applicable
  11/01/2026 05 AM PST            4.55              1         +      Not Applicable
  11/01/2026 06 AM PST            4.58              1         +      Not Applicable
  11/01/2026 07 AM PST            4.61              2         +      Not Applicable
  11/01/2026 08 AM PST            4.65              2         +      Not Applicable
  11/01/2026 09 AM PST            4.68              3         +      Not Applicable
  11/01/2026 10 AM PST            4.71              4         +      Not Applicable
  11/01/2026 11 AM PST            4.73              4         +      Not Applicable
  11/01/2026 12 PM PST            4.74              5         +      Not Applicable
  11/01/2026 01 PM PST            4.74              5         0      Not Applicable
  11/01/2026 02 PM PST            4.74              5         0      Not Applicable
  11/01/2026 03 PM PST            4.74              5         0      Not Applicable
  11/01/2026 04 PM PST            4.73              4         -      Not Applicable
  11/01/2026 05 PM PST            4.72              4         -      Not Applicable
  11/01/2026 06 PM PST            4.70              3         -      Not Applicable
  11/01/2026 07 PM PST            4.69              3         -      Not Applicable
  11/01/2026 08 PM PST            4.67              3         -      Not Applicable
  11/01/2026 09 PM PST            4.66              3         -      Not Applicable
  11/01/2026 10 PM PST            4.64              2         -      Not Applicable
  11/01/2026 11 PM PST            4.63              2         -      Not Applicable
  11/02/2026 12 AM PST            4.62              2         -      Not Applicable
  11/02/2026 01 AM PST            4.61              2         -      Not Applicable
  11/02/2026 02 AM PST            4.60              2         -      Not Applicable
  11/02/2026 03 AM PST            4.59              1         -      Not Applicable
  11/02/2026 04 AM PST            4.58              1         -      Not Applicable
  11/02/2026 05 AM PST            4.57              1         -      Not Applicable
  11/02/2026 06 AM PST            4.57              1         0      Not Applicable
  11/02/2026 07 AM PST            4.56              1         -      Not Applicable
  11/02/2026 08 AM PST            4.55              1         -      Not Applicable
  11/02/2026 09 AM PST            4.55              1         0      Not Applicable
  11/02/2026 10 AM PST            4.55              1         0      Not Applicable
  11/02/2026 11 AM PST            4.54              1         -      Not Applicable
  11/02/2026 12 PM PST            4.54              1         0      Not Applicable
  11/02/2026 01 PM PST            4.54              1         0      Not Applicable
  11/02/2026 02 PM PST            4.54              1         0      Not Applicable
  11/02/2026 03 PM PST            4.54              1         0      Not Applicable
  11/02/2026 04 PM PST            4.53              1         -      Not Applicable
  11/02/2026 05 PM PST            4.53              1         0      Not Applicable
  11/02/2026 06 PM PST            4.53              1         0      Not Applicable
  11/02/2026 07 PM PST            4.53              1         0      Not Applicable
  11/02/2026 08 PM PST            4.53              1         0      Not Applicable
  11/02/2026 09 PM PST            4.53              1         0      Not Applicable
  11/02/2026 10 PM PST            4.53              1         0      Not Applicable
  11/02/2026 11 PM PST            4.53              1         0      Not Applicable
  11/03/2026 12 AM PST            4.53              1         0      Not Applicable
  11/03/2026 01 AM PST            4.53              1         0      Not Applicable
  11/03/2026 02 AM PST            4.53              1         0      Not Applicable
  11/03/2026 03 AM PST            4.53              1         0      Not Applicable
  11/03/2026 04 AM PST            4.53              1         0      Not Applicable
  11/03/2026 05 AM PST            4.53              1         0      Not Applicable
  11/03/2026 06 AM PST            4.53              1         0      Not Applicable
  11/03/2026 07 AM PST            4.53              1         0      Not Applicable
  11/03/2026 08 AM PST            4.53              1         0      Not Applicable
  11/03/2026 09 AM PST            4.53              1         0      Not Applicable
  11/03/2026 10 AM PST            4.53              1         0      Not Applicable
  11/03/2026 11 AM PST            4.53              1         0      Not Applicable
  11/03/2026 12 PM PST            4.53              1         0      Not Applicable
  11/03/2026 01 PM PST            4.53              1         0      Not Applicable
  11/03/2026 02 PM PST            4.53              1         0      Not Applicable
  11/03/2026 03 PM PST            4.53              1         0      Not Applicable
  11/03/2026 04 PM PST            4.54              1         +      Not Applicable
  11/03/2026 05 PM PST            4.56              1         +      Not Applicable
  11/03/2026 06 PM PST            4.59              1         +      Not Applicable
  11/03/2026 07 PM PST            4.62              2         +      Not Applicable
  11/03/2026 08 PM PST            4.66              3         +      Not Applicable
  11/03/2026 09 PM PST            4.70              3         +      Not Applicable
  11/03/2026 10 PM PST            4.73              4         +      Not Applicable
  11/03/2026 11 PM PST            4.75              5         +      Not Applicable
  11/04/2026 12 AM PST            4.76              6         +      Not Applicable
  11/04/2026 01 AM PST            4.78              6         +      Not Applicable
  11/04/2026 02 AM PST            4.79              7         +      Not Applicable
  11/04/2026 03 AM PST            4.79              7         0      Not Applicable
  11/04/2026 04 AM PST            4.80              7         +      Not Applicable
  11/04/2026 05 AM PST            4.80              7         0      Not Applicable
  11/04/2026 06 AM PST            4.80              7         0      Not Applicable
  11/04/2026 07 AM PST            4.79              7         -      Not Applicable
  11/04/2026 08 AM PST            4.79              7         0      Not Applicable
  11/04/2026 09 AM PST            4.78              6         -      Not Applicable
  11/04/2026 10 AM PST            4.76              6         -      Not Applicable
  11/04/2026 11 AM PST            4.75              5         -      Not Applicable
  11/04/2026 12 PM PST            4.74              5         -      Not Applicable
  11/04/2026 01 PM PST            4.73              4         -      Not Applicable
  11/04/2026 02 PM PST            4.71              4         -      Not Applicable
  11/04/2026 03 PM PST            4.69              3         -      Not Applicable
  11/04/2026 04 PM PST            4.67              3         -      Not Applicable
  11/04/2026 05 PM PST            4.66              3         -      Not Applicable
  11/04/2026 06 PM PST            4.64              2         -      Not Applicable
  11/04/2026 07 PM PST            4.63              2         -      Not Applicable
  11/04/2026 08 PM PST            4.61              2         -      Not Applicable
  11/04/2026 09 PM PST            4.60              2         -      Not Applicable
  11/04/2026 10 PM PST            4.59              1         -      Not Applicable
  11/04/2026 11 PM PST            4.58              1         -      Not Applicable
  11/05/2026 12 AM PST            4.58              1         0      Not Applicable
  11/05/2026 01 AM PST            4.57              1         -      Not Applicable
  11/05/2026 02 AM PST            4.56              1         -      Not Applicable
  11/05/2026 03 AM PST            4.56              1         0      Not Applicable
  11/05/2026 04 AM PST            4.55              1         -      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.