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: Aug 28 2026 at 7:30 AM PDTNext Issuance: Aug 29 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:  08/28/2026 at 07:31 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  08/28/2026 at 07:00 AM PDT
# Maximum Observed Stage:                       4.58 Feet
# Maximum Observed Flow:                        6 cfs
#
# Earliest Date & Time of Maximum Forecast:     08/28/2026 at 08:00 AM PDT
# Maximum Forecast Stage:                       4.58 Feet
# Maximum Forecast Flow:                        6 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  08/23/2026 07 AM PDT            4.47              2                Not Applicable
  08/23/2026 08 AM PDT            4.47              2         0      Not Applicable
  08/23/2026 09 AM PDT            4.47              2         0      Not Applicable
  08/23/2026 10 AM PDT            4.47              2         0      Not Applicable
  08/23/2026 11 AM PDT            4.47              2         0      Not Applicable
  08/23/2026 12 PM PDT            4.47              2         0      Not Applicable
  08/23/2026 01 PM PDT            4.47              2         0      Not Applicable
  08/23/2026 02 PM PDT            4.47              2         0      Not Applicable
  08/23/2026 03 PM PDT            4.47              2         0      Not Applicable
  08/23/2026 04 PM PDT            4.47              2         0      Not Applicable
  08/23/2026 05 PM PDT            4.47              2         0      Not Applicable
  08/23/2026 06 PM PDT            4.47              2         0      Not Applicable
  08/23/2026 07 PM PDT            4.47              2         0      Not Applicable
  08/23/2026 08 PM PDT            4.47              2         0      Not Applicable
  08/23/2026 09 PM PDT            4.47              2         0      Not Applicable
  08/23/2026 10 PM PDT            4.47              2         0      Not Applicable
  08/23/2026 11 PM PDT            4.47              2         0      Not Applicable
  08/24/2026 12 AM PDT            4.47              2         0      Not Applicable
  08/24/2026 01 AM PDT            4.47              2         0      Not Applicable
  08/24/2026 02 AM PDT            4.47              2         0      Not Applicable
  08/24/2026 03 AM PDT            4.47              2         0      Not Applicable
  08/24/2026 04 AM PDT            4.47              2         0      Not Applicable
  08/24/2026 05 AM PDT            4.47              2         0      Not Applicable
  08/24/2026 06 AM PDT            4.47              2         0      Not Applicable
  08/24/2026 07 AM PDT            4.47              2         0      Not Applicable
  08/24/2026 08 AM PDT            4.47              2         0      Not Applicable
  08/24/2026 09 AM PDT            4.47              2         0      Not Applicable
  08/24/2026 10 AM PDT            4.47              2         0      Not Applicable
  08/24/2026 11 AM PDT            4.47              2         0      Not Applicable
  08/24/2026 12 PM PDT            4.47              2         0      Not Applicable
  08/24/2026 01 PM PDT            4.47              2         0      Not Applicable
  08/24/2026 02 PM PDT            4.47              2         0      Not Applicable
  08/24/2026 03 PM PDT            4.47              2         0      Not Applicable
  08/24/2026 04 PM PDT            4.47              2         0      Not Applicable
  08/24/2026 05 PM PDT            4.47              2         0      Not Applicable
  08/24/2026 06 PM PDT            4.47              2         0      Not Applicable
  08/24/2026 07 PM PDT            4.47              2         0      Not Applicable
  08/24/2026 08 PM PDT            4.47              2         0      Not Applicable
  08/24/2026 09 PM PDT            4.47              2         0      Not Applicable
  08/24/2026 10 PM PDT            4.47              2         0      Not Applicable
  08/24/2026 11 PM PDT            4.47              2         0      Not Applicable
  08/25/2026 12 AM PDT            4.47              2         0      Not Applicable
  08/25/2026 01 AM PDT            4.47              2         0      Not Applicable
  08/25/2026 02 AM PDT            4.47              2         0      Not Applicable
  08/25/2026 03 AM PDT            4.47              2         0      Not Applicable
  08/25/2026 04 AM PDT            4.47              2         0      Not Applicable
  08/25/2026 05 AM PDT            4.47              2         0      Not Applicable
  08/25/2026 06 AM PDT            4.47              2         0      Not Applicable
  08/25/2026 07 AM PDT            4.47              2         0      Not Applicable
  08/25/2026 08 AM PDT            4.48              2         +      Not Applicable
  08/25/2026 09 AM PDT            4.48              2         0      Not Applicable
  08/25/2026 10 AM PDT            4.47              2         -      Not Applicable
  08/25/2026 11 AM PDT            4.47              2         0      Not Applicable
  08/25/2026 12 PM PDT            4.47              2         0      Not Applicable
  08/25/2026 01 PM PDT            4.47              2         0      Not Applicable
  08/25/2026 02 PM PDT            4.47              2         0      Not Applicable
  08/25/2026 03 PM PDT            4.47              2         0      Not Applicable
  08/25/2026 04 PM PDT            4.48              2         +      Not Applicable
  08/25/2026 05 PM PDT            4.48              2         0      Not Applicable
  08/25/2026 06 PM PDT            4.48              2         0      Not Applicable
  08/25/2026 07 PM PDT            4.48              2         0      Not Applicable
  08/25/2026 08 PM PDT            4.49              3         +      Not Applicable
  08/25/2026 09 PM PDT            4.49              3         0      Not Applicable
  08/25/2026 10 PM PDT            4.49              3         0      Not Applicable
  08/25/2026 11 PM PDT            4.49              3         0      Not Applicable
  08/26/2026 12 AM PDT            4.49              3         0      Not Applicable
  08/26/2026 01 AM PDT            4.49              3         0      Not Applicable
  08/26/2026 02 AM PDT            4.49              3         0      Not Applicable
  08/26/2026 03 AM PDT            4.49              3         0      Not Applicable
  08/26/2026 04 AM PDT            4.49              3         0      Not Applicable
  08/26/2026 05 AM PDT            4.50              3         +      Not Applicable
  08/26/2026 06 AM PDT            4.50              3         0      Not Applicable
  08/26/2026 07 AM PDT            4.50              3         0      Not Applicable
  08/26/2026 08 AM PDT            4.50              3         0      Not Applicable
  08/26/2026 09 AM PDT            4.50              3         0      Not Applicable
  08/26/2026 10 AM PDT            4.50              3         0      Not Applicable
  08/26/2026 11 AM PDT            4.51              3         +      Not Applicable
  08/26/2026 12 PM PDT            4.51              3         0      Not Applicable
  08/26/2026 01 PM PDT            4.51              3         0      Not Applicable
  08/26/2026 02 PM PDT            4.50              3         -      Not Applicable
  08/26/2026 03 PM PDT            4.50              3         0      Not Applicable
  08/26/2026 04 PM PDT            4.50              3         0      Not Applicable
  08/26/2026 05 PM PDT            4.50              3         0      Not Applicable
  08/26/2026 06 PM PDT            4.50              3         0      Not Applicable
  08/26/2026 07 PM PDT            4.50              3         0      Not Applicable
  08/26/2026 08 PM PDT            4.51              3         +      Not Applicable
  08/26/2026 09 PM PDT            4.51              3         0      Not Applicable
  08/26/2026 10 PM PDT            4.52              3         +      Not Applicable
  08/26/2026 11 PM PDT            4.53              4         +      Not Applicable
  08/27/2026 12 AM PDT            4.53              4         0      Not Applicable
  08/27/2026 01 AM PDT            4.54              4         +      Not Applicable
  08/27/2026 02 AM PDT            4.54              4         0      Not Applicable
  08/27/2026 03 AM PDT            4.54              4         0      Not Applicable
  08/27/2026 04 AM PDT            4.54              4         0      Not Applicable
  08/27/2026 05 AM PDT            4.55              4         +      Not Applicable
  08/27/2026 06 AM PDT            4.55              4         0      Not Applicable
  08/27/2026 07 AM PDT            4.55              4         0      Not Applicable
  08/27/2026 08 AM PDT            4.56              5         +      Not Applicable
  08/27/2026 09 AM PDT            4.56              5         0      Not Applicable
  08/27/2026 10 AM PDT            4.56              5         0      Not Applicable
  08/27/2026 11 AM PDT            4.56              5         0      Not Applicable
  08/27/2026 12 PM PDT            4.56              5         0      Not Applicable
  08/27/2026 01 PM PDT            4.56              5         0      Not Applicable
  08/27/2026 02 PM PDT            4.56              5         0      Not Applicable
  08/27/2026 03 PM PDT            4.56              5         0      Not Applicable
  08/27/2026 04 PM PDT            4.56              5         0      Not Applicable
  08/27/2026 05 PM PDT            4.56              5         0      Not Applicable
  08/27/2026 06 PM PDT            4.57              5         +      Not Applicable
  08/27/2026 07 PM PDT            4.57              5         0      Not Applicable
  08/27/2026 08 PM PDT            4.57              5         0      Not Applicable
  08/27/2026 09 PM PDT            4.57              5         0      Not Applicable
  08/27/2026 10 PM PDT            4.57              5         0      Not Applicable
  08/27/2026 11 PM PDT            4.57              5         0      Not Applicable
  08/28/2026 12 AM PDT            4.58              6         +      Not Applicable
  08/28/2026 01 AM PDT            4.58              6         0      Not Applicable
  08/28/2026 02 AM PDT            4.58              6         0      Not Applicable
  08/28/2026 03 AM PDT            4.58              6         0      Not Applicable
  08/28/2026 04 AM PDT            4.58              6         0      Not Applicable
  08/28/2026 05 AM PDT            4.58              6         0      Not Applicable
  08/28/2026 06 AM PDT            4.58              6         0      Not Applicable
  08/28/2026 07 AM PDT            4.58              6         0      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  08/28/2026 08 AM PDT            4.58              6                Not Applicable
  08/28/2026 09 AM PDT            4.58              6         0      Not Applicable
  08/28/2026 10 AM PDT            4.58              6         0      Not Applicable
  08/28/2026 11 AM PDT            4.58              6         0      Not Applicable
  08/28/2026 12 PM PDT            4.58              6         0      Not Applicable
  08/28/2026 01 PM PDT            4.58              6         0      Not Applicable
  08/28/2026 02 PM PDT            4.58              6         0      Not Applicable
  08/28/2026 03 PM PDT            4.58              6         0      Not Applicable
  08/28/2026 04 PM PDT            4.58              6         0      Not Applicable
  08/28/2026 05 PM PDT            4.58              6         0      Not Applicable
  08/28/2026 06 PM PDT            4.58              6         0      Not Applicable
  08/28/2026 07 PM PDT            4.58              6         0      Not Applicable
  08/28/2026 08 PM PDT            4.58              6         0      Not Applicable
  08/28/2026 09 PM PDT            4.58              6         0      Not Applicable
  08/28/2026 10 PM PDT            4.58              6         0      Not Applicable
  08/28/2026 11 PM PDT            4.58              6         0      Not Applicable
  08/29/2026 12 AM PDT            4.58              6         0      Not Applicable
  08/29/2026 01 AM PDT            4.58              6         0      Not Applicable
  08/29/2026 02 AM PDT            4.58              6         0      Not Applicable
  08/29/2026 03 AM PDT            4.58              6         0      Not Applicable
  08/29/2026 04 AM PDT            4.58              6         0      Not Applicable
  08/29/2026 05 AM PDT            4.58              6         0      Not Applicable
  08/29/2026 06 AM PDT            4.58              6         0      Not Applicable
  08/29/2026 07 AM PDT            4.58              6         0      Not Applicable
  08/29/2026 08 AM PDT            4.58              6         0      Not Applicable
  08/29/2026 09 AM PDT            4.58              6         0      Not Applicable
  08/29/2026 10 AM PDT            4.58              6         0      Not Applicable
  08/29/2026 11 AM PDT            4.58              6         0      Not Applicable
  08/29/2026 12 PM PDT            4.58              6         0      Not Applicable
  08/29/2026 01 PM PDT            4.58              6         0      Not Applicable
  08/29/2026 02 PM PDT            4.58              6         0      Not Applicable
  08/29/2026 03 PM PDT            4.58              6         0      Not Applicable
  08/29/2026 04 PM PDT            4.58              6         0      Not Applicable
  08/29/2026 05 PM PDT            4.58              6         0      Not Applicable
  08/29/2026 06 PM PDT            4.58              6         0      Not Applicable
  08/29/2026 07 PM PDT            4.58              6         0      Not Applicable
  08/29/2026 08 PM PDT            4.58              6         0      Not Applicable
  08/29/2026 09 PM PDT            4.58              6         0      Not Applicable
  08/29/2026 10 PM PDT            4.58              6         0      Not Applicable
  08/29/2026 11 PM PDT            4.58              6         0      Not Applicable
  08/30/2026 12 AM PDT            4.58              6         0      Not Applicable
  08/30/2026 01 AM PDT            4.58              6         0      Not Applicable
  08/30/2026 02 AM PDT            4.58              6         0      Not Applicable
  08/30/2026 03 AM PDT            4.58              6         0      Not Applicable
  08/30/2026 04 AM PDT            4.58              6         0      Not Applicable
  08/30/2026 05 AM PDT            4.58              6         0      Not Applicable
  08/30/2026 06 AM PDT            4.58              6         0      Not Applicable
  08/30/2026 07 AM PDT            4.58              6         0      Not Applicable
  08/30/2026 08 AM PDT            4.58              6         0      Not Applicable
  08/30/2026 09 AM PDT            4.58              6         0      Not Applicable
  08/30/2026 10 AM PDT            4.58              6         0      Not Applicable
  08/30/2026 11 AM PDT            4.58              6         0      Not Applicable
  08/30/2026 12 PM PDT            4.58              6         0      Not Applicable
  08/30/2026 01 PM PDT            4.58              6         0      Not Applicable
  08/30/2026 02 PM PDT            4.58              6         0      Not Applicable
  08/30/2026 03 PM PDT            4.58              6         0      Not Applicable
  08/30/2026 04 PM PDT            4.58              6         0      Not Applicable
  08/30/2026 05 PM PDT            4.58              6         0      Not Applicable
  08/30/2026 06 PM PDT            4.58              6         0      Not Applicable
  08/30/2026 07 PM PDT            4.58              6         0      Not Applicable
  08/30/2026 08 PM PDT            4.58              6         0      Not Applicable
  08/30/2026 09 PM PDT            4.58              6         0      Not Applicable
  08/30/2026 10 PM PDT            4.58              6         0      Not Applicable
  08/30/2026 11 PM PDT            4.58              6         0      Not Applicable
  08/31/2026 12 AM PDT            4.58              6         0      Not Applicable
  08/31/2026 01 AM PDT            4.58              6         0      Not Applicable
  08/31/2026 02 AM PDT            4.58              6         0      Not Applicable
  08/31/2026 03 AM PDT            4.58              6         0      Not Applicable
  08/31/2026 04 AM PDT            4.58              6         0      Not Applicable
  08/31/2026 05 AM PDT            4.58              6         0      Not Applicable
  08/31/2026 06 AM PDT            4.58              6         0      Not Applicable
  08/31/2026 07 AM PDT            4.58              6         0      Not Applicable
  08/31/2026 08 AM PDT            4.58              6         0      Not Applicable
  08/31/2026 09 AM PDT            4.58              6         0      Not Applicable
  08/31/2026 10 AM PDT            4.58              6         0      Not Applicable
  08/31/2026 11 AM PDT            4.58              6         0      Not Applicable
  08/31/2026 12 PM PDT            4.58              6         0      Not Applicable
  08/31/2026 01 PM PDT            4.58              6         0      Not Applicable
  08/31/2026 02 PM PDT            4.58              6         0      Not Applicable
  08/31/2026 03 PM PDT            4.58              6         0      Not Applicable
  08/31/2026 04 PM PDT            4.58              6         0      Not Applicable
  08/31/2026 05 PM PDT            4.58              6         0      Not Applicable
  08/31/2026 06 PM PDT            4.58              6         0      Not Applicable
  08/31/2026 07 PM PDT            4.58              6         0      Not Applicable
  08/31/2026 08 PM PDT            4.58              6         0      Not Applicable
  08/31/2026 09 PM PDT            4.58              6         0      Not Applicable
  08/31/2026 10 PM PDT            4.58              6         0      Not Applicable
  08/31/2026 11 PM PDT            4.58              6         0      Not Applicable
  09/01/2026 12 AM PDT            4.58              6         0      Not Applicable
  09/01/2026 01 AM PDT            4.58              6         0      Not Applicable
  09/01/2026 02 AM PDT            4.58              6         0      Not Applicable
  09/01/2026 03 AM PDT            4.58              6         0      Not Applicable
  09/01/2026 04 AM PDT            4.58              6         0      Not Applicable
  09/01/2026 05 AM PDT            4.58              6         0      Not Applicable
  09/01/2026 06 AM PDT            4.58              6         0      Not Applicable
  09/01/2026 07 AM PDT            4.58              6         0      Not Applicable
  09/01/2026 08 AM PDT            4.58              6         0      Not Applicable
  09/01/2026 09 AM PDT            4.58              6         0      Not Applicable
  09/01/2026 10 AM PDT            4.58              6         0      Not Applicable
  09/01/2026 11 AM PDT            4.58              6         0      Not Applicable
  09/01/2026 12 PM PDT            4.58              6         0      Not Applicable
  09/01/2026 01 PM PDT            4.58              6         0      Not Applicable
  09/01/2026 02 PM PDT            4.58              6         0      Not Applicable
  09/01/2026 03 PM PDT            4.58              6         0      Not Applicable
  09/01/2026 04 PM PDT            4.58              6         0      Not Applicable
  09/01/2026 05 PM PDT            4.58              6         0      Not Applicable
  09/01/2026 06 PM PDT            4.58              6         0      Not Applicable
  09/01/2026 07 PM PDT            4.58              6         0      Not Applicable
  09/01/2026 08 PM PDT            4.58              6         0      Not Applicable
  09/01/2026 09 PM PDT            4.58              6         0      Not Applicable
  09/01/2026 10 PM PDT            4.58              6         0      Not Applicable
  09/01/2026 11 PM PDT            4.58              6         0      Not Applicable
  09/02/2026 12 AM PDT            4.58              6         0      Not Applicable
  09/02/2026 01 AM PDT            4.58              6         0      Not Applicable
  09/02/2026 02 AM PDT            4.58              6         0      Not Applicable
  09/02/2026 03 AM PDT            4.58              6         0      Not Applicable
  09/02/2026 04 AM PDT            4.58              6         0      Not Applicable
  09/02/2026 05 AM PDT            4.58              6         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.