National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service

*** IMPORTANT ***  Week of June 16 - Website Data Outage - Due to a major computer upgrade the week of June 16, nearly all data on the CNRFC web site will not be updated. We anticipate the down time to be approximately 4 days. The latest deterministic hydrologic forecasts for official forecast points will continue to be available at the National Water Prediction Service during this time.
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SOUTH FORK GUALALA RIVER - SEA RANCH (GSRC1)
Latitude: 38.71º NLongitude: 123.43º WElevation: 40 Feet
Location: Sonoma County in CaliforniaBulletin Group: Russian NapaRiver Group: Russian Napa
Issuance Time: May 31 2025 at 8:35 AM PDTNext Issuance: Jun 01 2025 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:  05/31/2025 at 08:35 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  05/26/2025 at 08:00 AM PDT
# Maximum Observed Stage:                       5.33 Feet
# Maximum Observed Flow:                        39 cfs
#
# Earliest Date & Time of Maximum Forecast:     05/31/2025 at 09:00 AM PDT
# Maximum Forecast Stage:                       5.25 Feet
# Maximum Forecast Flow:                        33 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  05/26/2025 08 AM PDT            5.33             39                Not Applicable
  05/26/2025 09 AM PDT            5.32             38         -      Not Applicable
  05/26/2025 10 AM PDT            5.32             38         0      Not Applicable
  05/26/2025 11 AM PDT            5.32             38         0      Not Applicable
  05/26/2025 12 PM PDT            5.32             38         0      Not Applicable
  05/26/2025 01 PM PDT            5.31             37         -      Not Applicable
  05/26/2025 02 PM PDT            5.31             37         0      Not Applicable
  05/26/2025 03 PM PDT            5.31             37         0      Not Applicable
  05/26/2025 04 PM PDT            5.31             37         0      Not Applicable
  05/26/2025 05 PM PDT            5.30             36         -      Not Applicable
  05/26/2025 06 PM PDT            5.31             37         +      Not Applicable
  05/26/2025 07 PM PDT            5.31             37         0      Not Applicable
  05/26/2025 08 PM PDT            5.31             37         0      Not Applicable
  05/26/2025 09 PM PDT            5.32             38         +      Not Applicable
  05/26/2025 10 PM PDT            5.32             38         0      Not Applicable
  05/26/2025 11 PM PDT            5.32             38         0      Not Applicable
  05/27/2025 12 AM PDT            5.32             38         0      Not Applicable
  05/27/2025 01 AM PDT            5.32             38         0      Not Applicable
  05/27/2025 02 AM PDT            5.32             38         0      Not Applicable
  05/27/2025 03 AM PDT            5.31             37         -      Not Applicable
  05/27/2025 04 AM PDT            5.31             37         0      Not Applicable
  05/27/2025 05 AM PDT            5.31             37         0      Not Applicable
  05/27/2025 06 AM PDT            5.32             38         +      Not Applicable
  05/27/2025 07 AM PDT            5.32             38         0      Not Applicable
  05/27/2025 08 AM PDT            5.32             38         0      Not Applicable
  05/27/2025 09 AM PDT            5.32             38         0      Not Applicable
  05/27/2025 10 AM PDT            5.32             38         0      Not Applicable
  05/27/2025 11 AM PDT            5.32             38         0      Not Applicable
  05/27/2025 12 PM PDT            5.32             38         0      Not Applicable
  05/27/2025 01 PM PDT            5.31             37         -      Not Applicable
  05/27/2025 02 PM PDT            5.31             37         0      Not Applicable
  05/27/2025 03 PM PDT            5.30             36         -      Not Applicable
  05/27/2025 04 PM PDT            5.30             36         0      Not Applicable
  05/27/2025 05 PM PDT            5.31             37         +      Not Applicable
  05/27/2025 06 PM PDT            5.31             37         0      Not Applicable
  05/27/2025 07 PM PDT            5.31             37         0      Not Applicable
  05/27/2025 08 PM PDT            5.31             37         0      Not Applicable
  05/27/2025 09 PM PDT            5.31             37         0      Not Applicable
  05/27/2025 10 PM PDT            5.31             37         0      Not Applicable
  05/27/2025 11 PM PDT            5.31             37         0      Not Applicable
  05/28/2025 12 AM PDT            5.31             37         0      Not Applicable
  05/28/2025 01 AM PDT            5.31             37         0      Not Applicable
  05/28/2025 02 AM PDT            5.31             37         0      Not Applicable
  05/28/2025 03 AM PDT            5.31             37         0      Not Applicable
  05/28/2025 04 AM PDT            5.31             37         0      Not Applicable
  05/28/2025 05 AM PDT            5.30             36         -      Not Applicable
  05/28/2025 06 AM PDT            5.30             36         0      Not Applicable
  05/28/2025 07 AM PDT            5.30             36         0      Not Applicable
  05/28/2025 08 AM PDT            5.31             37         +      Not Applicable
  05/28/2025 09 AM PDT            5.31             37         0      Not Applicable
  05/28/2025 10 AM PDT            5.31             37         0      Not Applicable
  05/28/2025 11 AM PDT            5.30             36         -      Not Applicable
  05/28/2025 12 PM PDT            5.30             36         0      Not Applicable
  05/28/2025 01 PM PDT            5.30             36         0      Not Applicable
  05/28/2025 02 PM PDT            5.30             36         0      Not Applicable
  05/28/2025 03 PM PDT            5.30             36         0      Not Applicable
  05/28/2025 04 PM PDT            5.30             36         0      Not Applicable
  05/28/2025 05 PM PDT            5.30             36         0      Not Applicable
  05/28/2025 06 PM PDT            5.30             36         0      Not Applicable
  05/28/2025 07 PM PDT            5.30             36         0      Not Applicable
  05/28/2025 08 PM PDT            5.30             36         0      Not Applicable
  05/28/2025 09 PM PDT            5.29             36         -      Not Applicable
  05/28/2025 10 PM PDT            5.29             36         0      Not Applicable
  05/28/2025 11 PM PDT            5.29             36         0      Not Applicable
  05/29/2025 12 AM PDT            5.29             36         0      Not Applicable
  05/29/2025 01 AM PDT            5.29             36         0      Not Applicable
  05/29/2025 02 AM PDT            5.29             36         0      Not Applicable
  05/29/2025 03 AM PDT            5.28             35         -      Not Applicable
  05/29/2025 04 AM PDT            5.28             35         0      Not Applicable
  05/29/2025 05 AM PDT            5.28             35         0      Not Applicable
  05/29/2025 06 AM PDT            5.29             36         +      Not Applicable
  05/29/2025 07 AM PDT            5.29             36         0      Not Applicable
  05/29/2025 08 AM PDT            5.29             36         0      Not Applicable
  05/29/2025 09 AM PDT            5.29             36         0      Not Applicable
  05/29/2025 10 AM PDT            5.29             36         0      Not Applicable
  05/29/2025 11 AM PDT            5.29             36         0      Not Applicable
  05/29/2025 12 PM PDT            5.29             36         0      Not Applicable
  05/29/2025 01 PM PDT            5.28             35         -      Not Applicable
  05/29/2025 02 PM PDT            5.28             35         0      Not Applicable
  05/29/2025 03 PM PDT            5.28             35         0      Not Applicable
  05/29/2025 04 PM PDT            5.27             34         -      Not Applicable
  05/29/2025 05 PM PDT            5.27             34         0      Not Applicable
  05/29/2025 06 PM PDT            5.27             34         0      Not Applicable
  05/29/2025 07 PM PDT            5.28             35         +      Not Applicable
  05/29/2025 08 PM PDT            5.28             35         0      Not Applicable
  05/29/2025 09 PM PDT            5.28             35         0      Not Applicable
  05/29/2025 10 PM PDT            5.27             34         -      Not Applicable
  05/29/2025 11 PM PDT            5.27             34         0      Not Applicable
  05/30/2025 12 AM PDT            5.27             34         0      Not Applicable
  05/30/2025 01 AM PDT            5.27             34         0      Not Applicable
  05/30/2025 02 AM PDT            5.27             34         0      Not Applicable
  05/30/2025 03 AM PDT            5.27             34         0      Not Applicable
  05/30/2025 04 AM PDT            5.27             34         0      Not Applicable
  05/30/2025 05 AM PDT            5.27             34         0      Not Applicable
  05/30/2025 06 AM PDT            5.27             34         0      Not Applicable
  05/30/2025 07 AM PDT            5.27             34         0      Not Applicable
  05/30/2025 08 AM PDT            5.26             33         -      Not Applicable
  05/30/2025 09 AM PDT            5.26             33         0      Not Applicable
  05/30/2025 10 AM PDT            5.26             33         0      Not Applicable
  05/30/2025 11 AM PDT            5.26             33         0      Not Applicable
  05/30/2025 12 PM PDT            5.26             33         0      Not Applicable
  05/30/2025 01 PM PDT            5.26             33         0      Not Applicable
  05/30/2025 02 PM PDT            5.26             33         0      Not Applicable
  05/30/2025 03 PM PDT            5.26             33         0      Not Applicable
  05/30/2025 04 PM PDT            5.26             33         0      Not Applicable
  05/30/2025 05 PM PDT            5.26             33         0      Not Applicable
  05/30/2025 06 PM PDT            5.25             33         -      Not Applicable
  05/30/2025 07 PM PDT            5.25             33         0      Not Applicable
  05/30/2025 08 PM PDT            5.25             33         0      Not Applicable
  05/30/2025 09 PM PDT            5.25             33         0      Not Applicable
  05/30/2025 10 PM PDT            5.24             32         -      Not Applicable
  05/30/2025 11 PM PDT            5.24             32         0      Not Applicable
  05/31/2025 12 AM PDT            5.24             32         0      Not Applicable
  05/31/2025 01 AM PDT            5.24             32         0      Not Applicable
  05/31/2025 02 AM PDT            5.24             32         0      Not Applicable
  05/31/2025 03 AM PDT            5.24             32         0      Not Applicable
  05/31/2025 04 AM PDT            5.25             33         +      Not Applicable
  05/31/2025 05 AM PDT            5.25             33         0      Not Applicable
  05/31/2025 06 AM PDT            5.25             33         0      Not Applicable
  05/31/2025 07 AM PDT            5.25             33         0      Not Applicable
  05/31/2025 08 AM PDT            5.25             33         0      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  05/31/2025 09 AM PDT            5.25             33                Not Applicable
  05/31/2025 10 AM PDT            5.25             33         0      Not Applicable
  05/31/2025 11 AM PDT            5.25             33         0      Not Applicable
  05/31/2025 12 PM PDT            5.25             33         0      Not Applicable
  05/31/2025 01 PM PDT            5.25             33         0      Not Applicable
  05/31/2025 02 PM PDT            5.25             33         0      Not Applicable
  05/31/2025 03 PM PDT            5.24             32         -      Not Applicable
  05/31/2025 04 PM PDT            5.24             32         0      Not Applicable
  05/31/2025 05 PM PDT            5.24             32         0      Not Applicable
  05/31/2025 06 PM PDT            5.24             32         0      Not Applicable
  05/31/2025 07 PM PDT            5.24             32         0      Not Applicable
  05/31/2025 08 PM PDT            5.24             32         0      Not Applicable
  05/31/2025 09 PM PDT            5.24             32         0      Not Applicable
  05/31/2025 10 PM PDT            5.24             32         0      Not Applicable
  05/31/2025 11 PM PDT            5.24             32         0      Not Applicable
  06/01/2025 12 AM PDT            5.24             32         0      Not Applicable
  06/01/2025 01 AM PDT            5.24             32         0      Not Applicable
  06/01/2025 02 AM PDT            5.24             32         0      Not Applicable
  06/01/2025 03 AM PDT            5.24             32         0      Not Applicable
  06/01/2025 04 AM PDT            5.24             32         0      Not Applicable
  06/01/2025 05 AM PDT            5.24             32         0      Not Applicable
  06/01/2025 06 AM PDT            5.23             31         -      Not Applicable
  06/01/2025 07 AM PDT            5.23             31         0      Not Applicable
  06/01/2025 08 AM PDT            5.23             31         0      Not Applicable
  06/01/2025 09 AM PDT            5.23             31         0      Not Applicable
  06/01/2025 10 AM PDT            5.23             31         0      Not Applicable
  06/01/2025 11 AM PDT            5.23             31         0      Not Applicable
  06/01/2025 12 PM PDT            5.23             31         0      Not Applicable
  06/01/2025 01 PM PDT            5.23             31         0      Not Applicable
  06/01/2025 02 PM PDT            5.23             31         0      Not Applicable
  06/01/2025 03 PM PDT            5.23             31         0      Not Applicable
  06/01/2025 04 PM PDT            5.23             31         0      Not Applicable
  06/01/2025 05 PM PDT            5.23             31         0      Not Applicable
  06/01/2025 06 PM PDT            5.23             31         0      Not Applicable
  06/01/2025 07 PM PDT            5.23             31         0      Not Applicable
  06/01/2025 08 PM PDT            5.23             31         0      Not Applicable
  06/01/2025 09 PM PDT            5.22             31         -      Not Applicable
  06/01/2025 10 PM PDT            5.22             31         0      Not Applicable
  06/01/2025 11 PM PDT            5.22             31         0      Not Applicable
  06/02/2025 12 AM PDT            5.22             31         0      Not Applicable
  06/02/2025 01 AM PDT            5.22             31         0      Not Applicable
  06/02/2025 02 AM PDT            5.22             31         0      Not Applicable
  06/02/2025 03 AM PDT            5.22             31         0      Not Applicable
  06/02/2025 04 AM PDT            5.22             31         0      Not Applicable
  06/02/2025 05 AM PDT            5.22             31         0      Not Applicable
  06/02/2025 06 AM PDT            5.22             31         0      Not Applicable
  06/02/2025 07 AM PDT            5.22             31         0      Not Applicable
  06/02/2025 08 AM PDT            5.22             31         0      Not Applicable
  06/02/2025 09 AM PDT            5.22             31         0      Not Applicable
  06/02/2025 10 AM PDT            5.22             31         0      Not Applicable
  06/02/2025 11 AM PDT            5.22             31         0      Not Applicable
  06/02/2025 12 PM PDT            5.21             30         -      Not Applicable
  06/02/2025 01 PM PDT            5.21             30         0      Not Applicable
  06/02/2025 02 PM PDT            5.21             30         0      Not Applicable
  06/02/2025 03 PM PDT            5.21             30         0      Not Applicable
  06/02/2025 04 PM PDT            5.21             30         0      Not Applicable
  06/02/2025 05 PM PDT            5.21             30         0      Not Applicable
  06/02/2025 06 PM PDT            5.21             30         0      Not Applicable
  06/02/2025 07 PM PDT            5.21             30         0      Not Applicable
  06/02/2025 08 PM PDT            5.21             30         0      Not Applicable
  06/02/2025 09 PM PDT            5.21             30         0      Not Applicable
  06/02/2025 10 PM PDT            5.21             30         0      Not Applicable
  06/02/2025 11 PM PDT            5.21             30         0      Not Applicable
  06/03/2025 12 AM PDT            5.21             30         0      Not Applicable
  06/03/2025 01 AM PDT            5.21             30         0      Not Applicable
  06/03/2025 02 AM PDT            5.21             30         0      Not Applicable
  06/03/2025 03 AM PDT            5.21             30         0      Not Applicable
  06/03/2025 04 AM PDT            5.21             30         0      Not Applicable
  06/03/2025 05 AM PDT            5.21             30         0      Not Applicable
  06/03/2025 06 AM PDT            5.20             29         -      Not Applicable
  06/03/2025 07 AM PDT            5.20             29         0      Not Applicable
  06/03/2025 08 AM PDT            5.20             29         0      Not Applicable
  06/03/2025 09 AM PDT            5.20             29         0      Not Applicable
  06/03/2025 10 AM PDT            5.20             29         0      Not Applicable
  06/03/2025 11 AM PDT            5.20             29         0      Not Applicable
  06/03/2025 12 PM PDT            5.20             29         0      Not Applicable
  06/03/2025 01 PM PDT            5.20             29         0      Not Applicable
  06/03/2025 02 PM PDT            5.20             29         0      Not Applicable
  06/03/2025 03 PM PDT            5.20             29         0      Not Applicable
  06/03/2025 04 PM PDT            5.20             29         0      Not Applicable
  06/03/2025 05 PM PDT            5.20             29         0      Not Applicable
  06/03/2025 06 PM PDT            5.20             29         0      Not Applicable
  06/03/2025 07 PM PDT            5.20             29         0      Not Applicable
  06/03/2025 08 PM PDT            5.20             29         0      Not Applicable
  06/03/2025 09 PM PDT            5.19             29         -      Not Applicable
  06/03/2025 10 PM PDT            5.19             29         0      Not Applicable
  06/03/2025 11 PM PDT            5.19             29         0      Not Applicable
  06/04/2025 12 AM PDT            5.19             29         0      Not Applicable
  06/04/2025 01 AM PDT            5.19             29         0      Not Applicable
  06/04/2025 02 AM PDT            5.19             29         0      Not Applicable
  06/04/2025 03 AM PDT            5.19             29         0      Not Applicable
  06/04/2025 04 AM PDT            5.19             29         0      Not Applicable
  06/04/2025 05 AM PDT            5.19             29         0      Not Applicable
  06/04/2025 06 AM PDT            5.19             29         0      Not Applicable
  06/04/2025 07 AM PDT            5.19             29         0      Not Applicable
  06/04/2025 08 AM PDT            5.19             29         0      Not Applicable
  06/04/2025 09 AM PDT            5.19             29         0      Not Applicable
  06/04/2025 10 AM PDT            5.19             29         0      Not Applicable
  06/04/2025 11 AM PDT            5.18             28         -      Not Applicable
  06/04/2025 12 PM PDT            5.18             28         0      Not Applicable
  06/04/2025 01 PM PDT            5.18             28         0      Not Applicable
  06/04/2025 02 PM PDT            5.18             28         0      Not Applicable
  06/04/2025 03 PM PDT            5.18             28         0      Not Applicable
  06/04/2025 04 PM PDT            5.18             28         0      Not Applicable
  06/04/2025 05 PM PDT            5.18             28         0      Not Applicable
  06/04/2025 06 PM PDT            5.18             28         0      Not Applicable
  06/04/2025 07 PM PDT            5.18             28         0      Not Applicable
  06/04/2025 08 PM PDT            5.18             28         0      Not Applicable
  06/04/2025 09 PM PDT            5.18             28         0      Not Applicable
  06/04/2025 10 PM PDT            5.18             28         0      Not Applicable
  06/04/2025 11 PM PDT            5.18             28         0      Not Applicable
  06/05/2025 12 AM PDT            5.18             28         0      Not Applicable
  06/05/2025 01 AM PDT            5.18             28         0      Not Applicable
  06/05/2025 02 AM PDT            5.17             27         -      Not Applicable
  06/05/2025 03 AM PDT            5.17             27         0      Not Applicable
  06/05/2025 04 AM PDT            5.17             27         0      Not Applicable
  06/05/2025 05 AM PDT            5.17             27         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.