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 13 2026 at 7:23 AM PDTNext Issuance: May 14 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:  05/13/2026 at 07:24 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  05/08/2026 at 08:00 AM PDT
# Maximum Observed Stage:                       5.36 Feet
# Maximum Observed Flow:                        59 cfs
#
# Earliest Date & Time of Maximum Forecast:     05/13/2026 at 08:00 AM PDT
# Maximum Forecast Stage:                       5.21 Feet
# Maximum Forecast Flow:                        47 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  05/08/2026 07 AM PDT            5.36             59                Not Applicable
  05/08/2026 08 AM PDT            5.36             59         0      Not Applicable
  05/08/2026 09 AM PDT            5.35             58         -      Not Applicable
  05/08/2026 10 AM PDT            5.35             58         0      Not Applicable
  05/08/2026 11 AM PDT            5.34             57         -      Not Applicable
  05/08/2026 12 PM PDT            5.34             57         0      Not Applicable
  05/08/2026 01 PM PDT            5.34             57         0      Not Applicable
  05/08/2026 02 PM PDT            5.34             57         0      Not Applicable
  05/08/2026 03 PM PDT            5.34             57         0      Not Applicable
  05/08/2026 04 PM PDT            5.34             57         0      Not Applicable
  05/08/2026 05 PM PDT            5.34             57         0      Not Applicable
  05/08/2026 06 PM PDT            5.33             56         -      Not Applicable
  05/08/2026 07 PM PDT            5.33             56         0      Not Applicable
  05/08/2026 08 PM PDT            5.33             56         0      Not Applicable
  05/08/2026 09 PM PDT            5.33             56         0      Not Applicable
  05/08/2026 10 PM PDT            5.33             56         0      Not Applicable
  05/08/2026 11 PM PDT            5.33             56         0      Not Applicable
  05/09/2026 12 AM PDT            5.33             56         0      Not Applicable
  05/09/2026 01 AM PDT            5.34             57         +      Not Applicable
  05/09/2026 02 AM PDT            5.34             57         0      Not Applicable
  05/09/2026 03 AM PDT            5.34             57         0      Not Applicable
  05/09/2026 04 AM PDT            5.33             56         -      Not Applicable
  05/09/2026 05 AM PDT            5.33             56         0      Not Applicable
  05/09/2026 06 AM PDT            5.33             56         0      Not Applicable
  05/09/2026 07 AM PDT            5.33             56         0      Not Applicable
  05/09/2026 08 AM PDT            5.32             56         -      Not Applicable
  05/09/2026 09 AM PDT            5.32             56         0      Not Applicable
  05/09/2026 10 AM PDT            5.31             55         -      Not Applicable
  05/09/2026 11 AM PDT            5.31             55         0      Not Applicable
  05/09/2026 12 PM PDT            5.31             55         0      Not Applicable
  05/09/2026 01 PM PDT            5.31             55         0      Not Applicable
  05/09/2026 02 PM PDT            5.31             55         0      Not Applicable
  05/09/2026 03 PM PDT            5.31             55         0      Not Applicable
  05/09/2026 04 PM PDT            5.31             55         0      Not Applicable
  05/09/2026 05 PM PDT            5.30             54         -      Not Applicable
  05/09/2026 06 PM PDT            5.30             54         0      Not Applicable
  05/09/2026 07 PM PDT            5.29             53         -      Not Applicable
  05/09/2026 08 PM PDT            5.29             53         0      Not Applicable
  05/09/2026 09 PM PDT            5.30             54         +      Not Applicable
  05/09/2026 10 PM PDT            5.30             54         0      Not Applicable
  05/09/2026 11 PM PDT            5.30             54         0      Not Applicable
  05/10/2026 12 AM PDT            5.30             54         0      Not Applicable
  05/10/2026 01 AM PDT            5.29             53         -      Not Applicable
  05/10/2026 02 AM PDT            5.29             53         0      Not Applicable
  05/10/2026 03 AM PDT            5.30             54         +      Not Applicable
  05/10/2026 04 AM PDT            5.29             53         -      Not Applicable
  05/10/2026 05 AM PDT            5.29             53         0      Not Applicable
  05/10/2026 06 AM PDT            5.29             53         0      Not Applicable
  05/10/2026 07 AM PDT            5.28             53         -      Not Applicable
  05/10/2026 08 AM PDT            5.28             53         0      Not Applicable
  05/10/2026 09 AM PDT            5.28             53         0      Not Applicable
  05/10/2026 10 AM PDT            5.28             53         0      Not Applicable
  05/10/2026 11 AM PDT            5.28             53         0      Not Applicable
  05/10/2026 12 PM PDT            5.28             53         0      Not Applicable
  05/10/2026 01 PM PDT            5.28             53         0      Not Applicable
  05/10/2026 02 PM PDT            5.27             52         -      Not Applicable
  05/10/2026 03 PM PDT            5.27             52         0      Not Applicable
  05/10/2026 04 PM PDT            5.27             52         0      Not Applicable
  05/10/2026 05 PM PDT            5.27             52         0      Not Applicable
  05/10/2026 06 PM PDT            5.26             51         -      Not Applicable
  05/10/2026 07 PM PDT            5.26             51         0      Not Applicable
  05/10/2026 08 PM PDT            5.26             51         0      Not Applicable
  05/10/2026 09 PM PDT            5.26             51         0      Not Applicable
  05/10/2026 10 PM PDT            5.26             51         0      Not Applicable
  05/10/2026 11 PM PDT            5.26             51         0      Not Applicable
  05/11/2026 12 AM PDT            5.26             51         0      Not Applicable
  05/11/2026 01 AM PDT            5.26             51         0      Not Applicable
  05/11/2026 02 AM PDT            5.26             51         0      Not Applicable
  05/11/2026 03 AM PDT            5.26             51         0      Not Applicable
  05/11/2026 04 AM PDT            5.26             51         0      Not Applicable
  05/11/2026 05 AM PDT            5.26             51         0      Not Applicable
  05/11/2026 06 AM PDT            5.26             51         0      Not Applicable
  05/11/2026 07 AM PDT            5.26             51         0      Not Applicable
  05/11/2026 08 AM PDT            5.25             50         -      Not Applicable
  05/11/2026 09 AM PDT            5.25             50         0      Not Applicable
  05/11/2026 10 AM PDT            5.25             50         0      Not Applicable
  05/11/2026 11 AM PDT            5.24             50         -      Not Applicable
  05/11/2026 12 PM PDT            5.25             50         +      Not Applicable
  05/11/2026 01 PM PDT            5.25             50         0      Not Applicable
  05/11/2026 02 PM PDT            5.25             50         0      Not Applicable
  05/11/2026 03 PM PDT            5.25             50         0      Not Applicable
  05/11/2026 04 PM PDT            5.24             50         -      Not Applicable
  05/11/2026 05 PM PDT            5.24             50         0      Not Applicable
  05/11/2026 06 PM PDT            5.24             50         0      Not Applicable
  05/11/2026 07 PM PDT            5.24             50         0      Not Applicable
  05/11/2026 08 PM PDT            5.23             49         -      Not Applicable
  05/11/2026 09 PM PDT            5.23             49         0      Not Applicable
  05/11/2026 10 PM PDT            5.23             49         0      Not Applicable
  05/11/2026 11 PM PDT            5.24             50         +      Not Applicable
  05/12/2026 12 AM PDT            5.24             50         0      Not Applicable
  05/12/2026 01 AM PDT            5.24             50         0      Not Applicable
  05/12/2026 02 AM PDT            5.24             50         0      Not Applicable
  05/12/2026 03 AM PDT            5.24             50         0      Not Applicable
  05/12/2026 04 AM PDT            5.24             50         0      Not Applicable
  05/12/2026 05 AM PDT            5.24             50         0      Not Applicable
  05/12/2026 06 AM PDT            5.24             50         0      Not Applicable
  05/12/2026 07 AM PDT            5.24             50         0      Not Applicable
  05/12/2026 08 AM PDT            5.24             50         0      Not Applicable
  05/12/2026 09 AM PDT            5.23             49         -      Not Applicable
  05/12/2026 10 AM PDT            5.22             48         -      Not Applicable
  05/12/2026 11 AM PDT            5.23             49         +      Not Applicable
  05/12/2026 12 PM PDT            5.22             48         -      Not Applicable
  05/12/2026 01 PM PDT            5.22             48         0      Not Applicable
  05/12/2026 02 PM PDT            5.22             48         0      Not Applicable
  05/12/2026 03 PM PDT            5.22             48         0      Not Applicable
  05/12/2026 04 PM PDT            5.22             48         0      Not Applicable
  05/12/2026 05 PM PDT            5.22             48         0      Not Applicable
  05/12/2026 06 PM PDT            5.21             47         -      Not Applicable
  05/12/2026 07 PM PDT            5.20             47         -      Not Applicable
  05/12/2026 08 PM PDT            5.20             47         0      Not Applicable
  05/12/2026 09 PM PDT            5.20             47         0      Not Applicable
  05/12/2026 10 PM PDT            5.20             47         0      Not Applicable
  05/12/2026 11 PM PDT            5.20             47         0      Not Applicable
  05/13/2026 12 AM PDT            5.20             47         0      Not Applicable
  05/13/2026 01 AM PDT            5.20             47         0      Not Applicable
  05/13/2026 02 AM PDT            5.21             47         +      Not Applicable
  05/13/2026 03 AM PDT            5.21             47         0      Not Applicable
  05/13/2026 04 AM PDT            5.21             47         0      Not Applicable
  05/13/2026 05 AM PDT            5.21             47         0      Not Applicable
  05/13/2026 06 AM PDT            5.21             47         0      Not Applicable
  05/13/2026 07 AM PDT            5.21             47         0      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  05/13/2026 08 AM PDT            5.21             47                Not Applicable
  05/13/2026 09 AM PDT            5.21             47         0      Not Applicable
  05/13/2026 10 AM PDT            5.21             47         0      Not Applicable
  05/13/2026 11 AM PDT            5.21             47         0      Not Applicable
  05/13/2026 12 PM PDT            5.21             47         0      Not Applicable
  05/13/2026 01 PM PDT            5.21             47         0      Not Applicable
  05/13/2026 02 PM PDT            5.20             47         -      Not Applicable
  05/13/2026 03 PM PDT            5.20             47         0      Not Applicable
  05/13/2026 04 PM PDT            5.20             47         0      Not Applicable
  05/13/2026 05 PM PDT            5.20             47         0      Not Applicable
  05/13/2026 06 PM PDT            5.20             47         0      Not Applicable
  05/13/2026 07 PM PDT            5.20             47         0      Not Applicable
  05/13/2026 08 PM PDT            5.20             47         0      Not Applicable
  05/13/2026 09 PM PDT            5.20             47         0      Not Applicable
  05/13/2026 10 PM PDT            5.20             47         0      Not Applicable
  05/13/2026 11 PM PDT            5.20             47         0      Not Applicable
  05/14/2026 12 AM PDT            5.20             47         0      Not Applicable
  05/14/2026 01 AM PDT            5.20             47         0      Not Applicable
  05/14/2026 02 AM PDT            5.20             47         0      Not Applicable
  05/14/2026 03 AM PDT            5.20             47         0      Not Applicable
  05/14/2026 04 AM PDT            5.20             47         0      Not Applicable
  05/14/2026 05 AM PDT            5.19             46         -      Not Applicable
  05/14/2026 06 AM PDT            5.19             46         0      Not Applicable
  05/14/2026 07 AM PDT            5.19             46         0      Not Applicable
  05/14/2026 08 AM PDT            5.19             46         0      Not Applicable
  05/14/2026 09 AM PDT            5.19             46         0      Not Applicable
  05/14/2026 10 AM PDT            5.19             46         0      Not Applicable
  05/14/2026 11 AM PDT            5.19             46         0      Not Applicable
  05/14/2026 12 PM PDT            5.19             46         0      Not Applicable
  05/14/2026 01 PM PDT            5.19             46         0      Not Applicable
  05/14/2026 02 PM PDT            5.19             46         0      Not Applicable
  05/14/2026 03 PM PDT            5.19             46         0      Not Applicable
  05/14/2026 04 PM PDT            5.19             46         0      Not Applicable
  05/14/2026 05 PM PDT            5.19             46         0      Not Applicable
  05/14/2026 06 PM PDT            5.19             46         0      Not Applicable
  05/14/2026 07 PM PDT            5.18             45         -      Not Applicable
  05/14/2026 08 PM PDT            5.18             45         0      Not Applicable
  05/14/2026 09 PM PDT            5.18             45         0      Not Applicable
  05/14/2026 10 PM PDT            5.18             45         0      Not Applicable
  05/14/2026 11 PM PDT            5.18             45         0      Not Applicable
  05/15/2026 12 AM PDT            5.18             45         0      Not Applicable
  05/15/2026 01 AM PDT            5.18             45         0      Not Applicable
  05/15/2026 02 AM PDT            5.18             45         0      Not Applicable
  05/15/2026 03 AM PDT            5.18             45         0      Not Applicable
  05/15/2026 04 AM PDT            5.18             45         0      Not Applicable
  05/15/2026 05 AM PDT            5.18             45         0      Not Applicable
  05/15/2026 06 AM PDT            5.18             45         0      Not Applicable
  05/15/2026 07 AM PDT            5.18             45         0      Not Applicable
  05/15/2026 08 AM PDT            5.18             45         0      Not Applicable
  05/15/2026 09 AM PDT            5.18             45         0      Not Applicable
  05/15/2026 10 AM PDT            5.17             45         -      Not Applicable
  05/15/2026 11 AM PDT            5.17             45         0      Not Applicable
  05/15/2026 12 PM PDT            5.17             45         0      Not Applicable
  05/15/2026 01 PM PDT            5.17             45         0      Not Applicable
  05/15/2026 02 PM PDT            5.17             45         0      Not Applicable
  05/15/2026 03 PM PDT            5.17             45         0      Not Applicable
  05/15/2026 04 PM PDT            5.17             45         0      Not Applicable
  05/15/2026 05 PM PDT            5.17             45         0      Not Applicable
  05/15/2026 06 PM PDT            5.17             45         0      Not Applicable
  05/15/2026 07 PM PDT            5.17             45         0      Not Applicable
  05/15/2026 08 PM PDT            5.17             45         0      Not Applicable
  05/15/2026 09 PM PDT            5.17             45         0      Not Applicable
  05/15/2026 10 PM PDT            5.17             45         0      Not Applicable
  05/15/2026 11 PM PDT            5.17             45         0      Not Applicable
  05/16/2026 12 AM PDT            5.17             45         0      Not Applicable
  05/16/2026 01 AM PDT            5.17             45         0      Not Applicable
  05/16/2026 02 AM PDT            5.17             45         0      Not Applicable
  05/16/2026 03 AM PDT            5.16             44         -      Not Applicable
  05/16/2026 04 AM PDT            5.16             44         0      Not Applicable
  05/16/2026 05 AM PDT            5.16             44         0      Not Applicable
  05/16/2026 06 AM PDT            5.16             44         0      Not Applicable
  05/16/2026 07 AM PDT            5.16             44         0      Not Applicable
  05/16/2026 08 AM PDT            5.16             44         0      Not Applicable
  05/16/2026 09 AM PDT            5.16             44         0      Not Applicable
  05/16/2026 10 AM PDT            5.16             44         0      Not Applicable
  05/16/2026 11 AM PDT            5.16             44         0      Not Applicable
  05/16/2026 12 PM PDT            5.16             44         0      Not Applicable
  05/16/2026 01 PM PDT            5.16             44         0      Not Applicable
  05/16/2026 02 PM PDT            5.16             44         0      Not Applicable
  05/16/2026 03 PM PDT            5.16             44         0      Not Applicable
  05/16/2026 04 PM PDT            5.16             44         0      Not Applicable
  05/16/2026 05 PM PDT            5.16             44         0      Not Applicable
  05/16/2026 06 PM PDT            5.15             43         -      Not Applicable
  05/16/2026 07 PM PDT            5.15             43         0      Not Applicable
  05/16/2026 08 PM PDT            5.15             43         0      Not Applicable
  05/16/2026 09 PM PDT            5.15             43         0      Not Applicable
  05/16/2026 10 PM PDT            5.15             43         0      Not Applicable
  05/16/2026 11 PM PDT            5.15             43         0      Not Applicable
  05/17/2026 12 AM PDT            5.15             43         0      Not Applicable
  05/17/2026 01 AM PDT            5.15             43         0      Not Applicable
  05/17/2026 02 AM PDT            5.15             43         0      Not Applicable
  05/17/2026 03 AM PDT            5.15             43         0      Not Applicable
  05/17/2026 04 AM PDT            5.15             43         0      Not Applicable
  05/17/2026 05 AM PDT            5.15             43         0      Not Applicable
  05/17/2026 06 AM PDT            5.15             43         0      Not Applicable
  05/17/2026 07 AM PDT            5.15             43         0      Not Applicable
  05/17/2026 08 AM PDT            5.14             43         -      Not Applicable
  05/17/2026 09 AM PDT            5.14             43         0      Not Applicable
  05/17/2026 10 AM PDT            5.14             43         0      Not Applicable
  05/17/2026 11 AM PDT            5.14             43         0      Not Applicable
  05/17/2026 12 PM PDT            5.14             43         0      Not Applicable
  05/17/2026 01 PM PDT            5.14             43         0      Not Applicable
  05/17/2026 02 PM PDT            5.14             43         0      Not Applicable
  05/17/2026 03 PM PDT            5.14             43         0      Not Applicable
  05/17/2026 04 PM PDT            5.14             43         0      Not Applicable
  05/17/2026 05 PM PDT            5.14             43         0      Not Applicable
  05/17/2026 06 PM PDT            5.14             43         0      Not Applicable
  05/17/2026 07 PM PDT            5.14             43         0      Not Applicable
  05/17/2026 08 PM PDT            5.14             43         0      Not Applicable
  05/17/2026 09 PM PDT            5.14             43         0      Not Applicable
  05/17/2026 10 PM PDT            5.13             42         -      Not Applicable
  05/17/2026 11 PM PDT            5.13             42         0      Not Applicable
  05/18/2026 12 AM PDT            5.13             42         0      Not Applicable
  05/18/2026 01 AM PDT            5.13             42         0      Not Applicable
  05/18/2026 02 AM PDT            5.13             42         0      Not Applicable
  05/18/2026 03 AM PDT            5.13             42         0      Not Applicable
  05/18/2026 04 AM PDT            5.13             42         0      Not Applicable
  05/18/2026 05 AM PDT            5.13             42         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.