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: Mar 09 2026 at 12:45 PM PDTNext Issuance: Mar 10 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:  03/09/2026 at 12:47 PM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  03/04/2026 at 12:00 PM PST
# Maximum Observed Stage:                       7.14 Feet
# Maximum Observed Flow:                        353 cfs
#
# Earliest Date & Time of Maximum Forecast:     03/09/2026 at 01:00 PM PDT
# Maximum Forecast Stage:                       6.51 Feet
# Maximum Forecast Flow:                        194 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  03/04/2026 11 AM PST            7.13            350                Not Applicable
  03/04/2026 12 PM PST            7.14            353         +      Not Applicable
  03/04/2026 01 PM PST            7.13            350         -      Not Applicable
  03/04/2026 02 PM PST            7.13            350         0      Not Applicable
  03/04/2026 03 PM PST            7.12            347         -      Not Applicable
  03/04/2026 04 PM PST            7.11            344         -      Not Applicable
  03/04/2026 05 PM PST            7.10            341         -      Not Applicable
  03/04/2026 06 PM PST            7.09            338         -      Not Applicable
  03/04/2026 07 PM PST            7.09            338         0      Not Applicable
  03/04/2026 08 PM PST            7.08            335         -      Not Applicable
  03/04/2026 09 PM PST            7.08            335         0      Not Applicable
  03/04/2026 10 PM PST            7.06            330         -      Not Applicable
  03/04/2026 11 PM PST            7.06            330         0      Not Applicable
  03/05/2026 12 AM PST            7.05            327         -      Not Applicable
  03/05/2026 01 AM PST            7.04            324         -      Not Applicable
  03/05/2026 02 AM PST            7.02            318         -      Not Applicable
  03/05/2026 03 AM PST            7.02            318         0      Not Applicable
  03/05/2026 04 AM PST            7.02            318         0      Not Applicable
  03/05/2026 05 AM PST            7.00            312         -      Not Applicable
  03/05/2026 06 AM PST            7.00            312         0      Not Applicable
  03/05/2026 07 AM PST            6.98            307         -      Not Applicable
  03/05/2026 08 AM PST            6.98            307         0      Not Applicable
  03/05/2026 09 AM PST            6.97            304         -      Not Applicable
  03/05/2026 10 AM PST            6.97            304         0      Not Applicable
  03/05/2026 11 AM PST            6.96            301         -      Not Applicable
  03/05/2026 12 PM PST            6.94            296         -      Not Applicable
  03/05/2026 01 PM PST            6.96            301         +      Not Applicable
  03/05/2026 02 PM PST            6.95            299         -      Not Applicable
  03/05/2026 03 PM PST            6.95            299         0      Not Applicable
  03/05/2026 04 PM PST            6.93            293         -      Not Applicable
  03/05/2026 05 PM PST            6.94            296         +      Not Applicable
  03/05/2026 06 PM PST            6.93            293         -      Not Applicable
  03/05/2026 07 PM PST            6.92            291         -      Not Applicable
  03/05/2026 08 PM PST            6.91            288         -      Not Applicable
  03/05/2026 09 PM PST            6.91            288         0      Not Applicable
  03/05/2026 10 PM PST            6.90            285         -      Not Applicable
  03/05/2026 11 PM PST            6.90            285         0      Not Applicable
  03/06/2026 12 AM PST            6.89            283         -      Not Applicable
  03/06/2026 01 AM PST            6.89            283         0      Not Applicable
  03/06/2026 02 AM PST            6.88            280         -      Not Applicable
  03/06/2026 03 AM PST            6.86            275         -      Not Applicable
  03/06/2026 04 AM PST            6.86            275         0      Not Applicable
  03/06/2026 05 AM PST            6.86            275         0      Not Applicable
  03/06/2026 06 AM PST            6.85            272         -      Not Applicable
  03/06/2026 07 AM PST            6.85            272         0      Not Applicable
  03/06/2026 08 AM PST            6.83            267         -      Not Applicable
  03/06/2026 09 AM PST            6.83            267         0      Not Applicable
  03/06/2026 10 AM PST            6.82            265         -      Not Applicable
  03/06/2026 11 AM PST            6.82            265         0      Not Applicable
  03/06/2026 12 PM PST            6.81            262         -      Not Applicable
  03/06/2026 01 PM PST            6.81            262         0      Not Applicable
  03/06/2026 02 PM PST            6.81            262         0      Not Applicable
  03/06/2026 03 PM PST            6.80            260         -      Not Applicable
  03/06/2026 04 PM PST            6.79            257         -      Not Applicable
  03/06/2026 05 PM PST            6.80            260         +      Not Applicable
  03/06/2026 06 PM PST            6.79            257         -      Not Applicable
  03/06/2026 07 PM PST            6.79            257         0      Not Applicable
  03/06/2026 08 PM PST            6.78            255         -      Not Applicable
  03/06/2026 09 PM PST            6.78            255         0      Not Applicable
  03/06/2026 10 PM PST            6.78            255         0      Not Applicable
  03/06/2026 11 PM PST            6.77            252         -      Not Applicable
  03/07/2026 12 AM PST            6.76            250         -      Not Applicable
  03/07/2026 01 AM PST            6.76            250         0      Not Applicable
  03/07/2026 02 AM PST            6.75            248         -      Not Applicable
  03/07/2026 03 AM PST            6.74            245         -      Not Applicable
  03/07/2026 04 AM PST            6.72            240         -      Not Applicable
  03/07/2026 05 AM PST            6.73            243         +      Not Applicable
  03/07/2026 06 AM PST            6.73            243         0      Not Applicable
  03/07/2026 07 AM PST            6.71            238         -      Not Applicable
  03/07/2026 08 AM PST            6.71            238         0      Not Applicable
  03/07/2026 09 AM PST            6.70            236         -      Not Applicable
  03/07/2026 10 AM PST            6.70            236         0      Not Applicable
  03/07/2026 11 AM PST            6.69            233         -      Not Applicable
  03/07/2026 12 PM PST            6.69            233         0      Not Applicable
  03/07/2026 01 PM PST            6.69            233         0      Not Applicable
  03/07/2026 02 PM PST            6.69            233         0      Not Applicable
  03/07/2026 03 PM PST            6.69            233         0      Not Applicable
  03/07/2026 04 PM PST            6.68            231         -      Not Applicable
  03/07/2026 05 PM PST            6.68            231         0      Not Applicable
  03/07/2026 06 PM PST            6.68            231         0      Not Applicable
  03/07/2026 07 PM PST            6.67            229         -      Not Applicable
  03/07/2026 08 PM PST            6.67            229         0      Not Applicable
  03/07/2026 09 PM PST            6.67            229         0      Not Applicable
  03/07/2026 10 PM PST            6.67            229         0      Not Applicable
  03/07/2026 11 PM PST            6.65            224         -      Not Applicable
  03/08/2026 12 AM PST            6.65            224         0      Not Applicable
  03/08/2026 01 AM PST            6.64            222         -      Not Applicable
  03/08/2026 03 AM PDT            6.64            222         0      Not Applicable
  03/08/2026 04 AM PDT            6.63            220         -      Not Applicable
  03/08/2026 05 AM PDT            6.63            220         0      Not Applicable
  03/08/2026 06 AM PDT            6.62            217         -      Not Applicable
  03/08/2026 07 AM PDT            6.62            217         0      Not Applicable
  03/08/2026 08 AM PDT            6.61            215         -      Not Applicable
  03/08/2026 09 AM PDT            6.61            215         0      Not Applicable
  03/08/2026 10 AM PDT            6.60            213         -      Not Applicable
  03/08/2026 11 AM PDT            6.59            211         -      Not Applicable
  03/08/2026 12 PM PDT            6.59            211         0      Not Applicable
  03/08/2026 01 PM PDT            6.59            211         0      Not Applicable
  03/08/2026 02 PM PDT            6.58            209         -      Not Applicable
  03/08/2026 03 PM PDT            6.58            209         0      Not Applicable
  03/08/2026 04 PM PDT            6.59            211         +      Not Applicable
  03/08/2026 05 PM PDT            6.58            209         -      Not Applicable
  03/08/2026 06 PM PDT            6.58            209         0      Not Applicable
  03/08/2026 07 PM PDT            6.59            211         +      Not Applicable
  03/08/2026 08 PM PDT            6.58            209         -      Not Applicable
  03/08/2026 09 PM PDT            6.58            209         0      Not Applicable
  03/08/2026 10 PM PDT            6.57            207         -      Not Applicable
  03/08/2026 11 PM PDT            6.57            207         0      Not Applicable
  03/09/2026 12 AM PDT            6.56            204         -      Not Applicable
  03/09/2026 01 AM PDT            6.56            204         0      Not Applicable
  03/09/2026 02 AM PDT            6.55            202         -      Not Applicable
  03/09/2026 03 AM PDT            6.54            200         -      Not Applicable
  03/09/2026 04 AM PDT            6.54            200         0      Not Applicable
  03/09/2026 05 AM PDT            6.54            200         0      Not Applicable
  03/09/2026 06 AM PDT            6.53            198         -      Not Applicable
  03/09/2026 07 AM PDT            6.54            200         +      Not Applicable
  03/09/2026 08 AM PDT            6.52            196         -      Not Applicable
  03/09/2026 09 AM PDT            6.51            194         -      Not Applicable
  03/09/2026 10 AM PDT            6.52            196         +      Not Applicable
  03/09/2026 11 AM PDT            6.52            196         0      Not Applicable
  03/09/2026 12 PM PDT            6.51            194         -      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  03/09/2026 01 PM PDT            6.51            194                Not Applicable
  03/09/2026 02 PM PDT            6.51            194         0      Not Applicable
  03/09/2026 03 PM PDT            6.50            192         -      Not Applicable
  03/09/2026 04 PM PDT            6.50            192         0      Not Applicable
  03/09/2026 05 PM PDT            6.50            192         0      Not Applicable
  03/09/2026 06 PM PDT            6.49            190         -      Not Applicable
  03/09/2026 07 PM PDT            6.49            190         0      Not Applicable
  03/09/2026 08 PM PDT            6.49            190         0      Not Applicable
  03/09/2026 09 PM PDT            6.48            188         -      Not Applicable
  03/09/2026 10 PM PDT            6.48            188         0      Not Applicable
  03/09/2026 11 PM PDT            6.48            188         0      Not Applicable
  03/10/2026 12 AM PDT            6.47            186         -      Not Applicable
  03/10/2026 01 AM PDT            6.47            186         0      Not Applicable
  03/10/2026 02 AM PDT            6.47            186         0      Not Applicable
  03/10/2026 03 AM PDT            6.46            184         -      Not Applicable
  03/10/2026 04 AM PDT            6.46            184         0      Not Applicable
  03/10/2026 05 AM PDT            6.46            184         0      Not Applicable
  03/10/2026 06 AM PDT            6.46            184         0      Not Applicable
  03/10/2026 07 AM PDT            6.45            182         -      Not Applicable
  03/10/2026 08 AM PDT            6.45            182         0      Not Applicable
  03/10/2026 09 AM PDT            6.45            182         0      Not Applicable
  03/10/2026 10 AM PDT            6.45            182         0      Not Applicable
  03/10/2026 11 AM PDT            6.44            180         -      Not Applicable
  03/10/2026 12 PM PDT            6.44            180         0      Not Applicable
  03/10/2026 01 PM PDT            6.44            180         0      Not Applicable
  03/10/2026 02 PM PDT            6.43            178         -      Not Applicable
  03/10/2026 03 PM PDT            6.43            178         0      Not Applicable
  03/10/2026 04 PM PDT            6.43            178         0      Not Applicable
  03/10/2026 05 PM PDT            6.42            176         -      Not Applicable
  03/10/2026 06 PM PDT            6.42            176         0      Not Applicable
  03/10/2026 07 PM PDT            6.42            176         0      Not Applicable
  03/10/2026 08 PM PDT            6.42            176         0      Not Applicable
  03/10/2026 09 PM PDT            6.41            174         -      Not Applicable
  03/10/2026 10 PM PDT            6.41            174         0      Not Applicable
  03/10/2026 11 PM PDT            6.41            174         0      Not Applicable
  03/11/2026 12 AM PDT            6.41            174         0      Not Applicable
  03/11/2026 01 AM PDT            6.40            172         -      Not Applicable
  03/11/2026 02 AM PDT            6.40            172         0      Not Applicable
  03/11/2026 03 AM PDT            6.40            172         0      Not Applicable
  03/11/2026 04 AM PDT            6.39            170         -      Not Applicable
  03/11/2026 05 AM PDT            6.39            170         0      Not Applicable
  03/11/2026 06 AM PDT            6.39            170         0      Not Applicable
  03/11/2026 07 AM PDT            6.39            170         0      Not Applicable
  03/11/2026 08 AM PDT            6.38            168         -      Not Applicable
  03/11/2026 09 AM PDT            6.38            168         0      Not Applicable
  03/11/2026 10 AM PDT            6.38            168         0      Not Applicable
  03/11/2026 11 AM PDT            6.38            168         0      Not Applicable
  03/11/2026 12 PM PDT            6.37            167         -      Not Applicable
  03/11/2026 01 PM PDT            6.37            167         0      Not Applicable
  03/11/2026 02 PM PDT            6.37            167         0      Not Applicable
  03/11/2026 03 PM PDT            6.37            167         0      Not Applicable
  03/11/2026 04 PM PDT            6.36            165         -      Not Applicable
  03/11/2026 05 PM PDT            6.36            165         0      Not Applicable
  03/11/2026 06 PM PDT            6.36            165         0      Not Applicable
  03/11/2026 07 PM PDT            6.36            165         0      Not Applicable
  03/11/2026 08 PM PDT            6.35            163         -      Not Applicable
  03/11/2026 09 PM PDT            6.35            163         0      Not Applicable
  03/11/2026 10 PM PDT            6.35            163         0      Not Applicable
  03/11/2026 11 PM PDT            6.35            163         0      Not Applicable
  03/12/2026 12 AM PDT            6.34            161         -      Not Applicable
  03/12/2026 01 AM PDT            6.34            161         0      Not Applicable
  03/12/2026 02 AM PDT            6.34            161         0      Not Applicable
  03/12/2026 03 AM PDT            6.34            161         0      Not Applicable
  03/12/2026 04 AM PDT            6.33            159         -      Not Applicable
  03/12/2026 05 AM PDT            6.33            159         0      Not Applicable
  03/12/2026 06 AM PDT            6.33            159         0      Not Applicable
  03/12/2026 07 AM PDT            6.33            159         0      Not Applicable
  03/12/2026 08 AM PDT            6.33            159         0      Not Applicable
  03/12/2026 09 AM PDT            6.32            157         -      Not Applicable
  03/12/2026 10 AM PDT            6.32            157         0      Not Applicable
  03/12/2026 11 AM PDT            6.32            157         0      Not Applicable
  03/12/2026 12 PM PDT            6.32            157         0      Not Applicable
  03/12/2026 01 PM PDT            6.32            157         0      Not Applicable
  03/12/2026 02 PM PDT            6.31            156         -      Not Applicable
  03/12/2026 03 PM PDT            6.31            156         0      Not Applicable
  03/12/2026 04 PM PDT            6.31            156         0      Not Applicable
  03/12/2026 05 PM PDT            6.31            156         0      Not Applicable
  03/12/2026 06 PM PDT            6.30            154         -      Not Applicable
  03/12/2026 07 PM PDT            6.30            154         0      Not Applicable
  03/12/2026 08 PM PDT            6.30            154         0      Not Applicable
  03/12/2026 09 PM PDT            6.30            154         0      Not Applicable
  03/12/2026 10 PM PDT            6.30            154         0      Not Applicable
  03/12/2026 11 PM PDT            6.29            152         -      Not Applicable
  03/13/2026 12 AM PDT            6.29            152         0      Not Applicable
  03/13/2026 01 AM PDT            6.29            152         0      Not Applicable
  03/13/2026 02 AM PDT            6.29            152         0      Not Applicable
  03/13/2026 03 AM PDT            6.29            152         0      Not Applicable
  03/13/2026 04 AM PDT            6.28            150         -      Not Applicable
  03/13/2026 05 AM PDT            6.28            150         0      Not Applicable
  03/13/2026 06 AM PDT            6.28            150         0      Not Applicable
  03/13/2026 07 AM PDT            6.28            150         0      Not Applicable
  03/13/2026 08 AM PDT            6.28            150         0      Not Applicable
  03/13/2026 09 AM PDT            6.27            149         -      Not Applicable
  03/13/2026 10 AM PDT            6.27            149         0      Not Applicable
  03/13/2026 11 AM PDT            6.27            149         0      Not Applicable
  03/13/2026 12 PM PDT            6.27            149         0      Not Applicable
  03/13/2026 01 PM PDT            6.27            149         0      Not Applicable
  03/13/2026 02 PM PDT            6.26            147         -      Not Applicable
  03/13/2026 03 PM PDT            6.26            147         0      Not Applicable
  03/13/2026 04 PM PDT            6.26            147         0      Not Applicable
  03/13/2026 05 PM PDT            6.26            147         0      Not Applicable
  03/13/2026 06 PM PDT            6.26            147         0      Not Applicable
  03/13/2026 07 PM PDT            6.26            147         0      Not Applicable
  03/13/2026 08 PM PDT            6.25            145         -      Not Applicable
  03/13/2026 09 PM PDT            6.25            145         0      Not Applicable
  03/13/2026 10 PM PDT            6.25            145         0      Not Applicable
  03/13/2026 11 PM PDT            6.25            145         0      Not Applicable
  03/14/2026 12 AM PDT            6.25            145         0      Not Applicable
  03/14/2026 01 AM PDT            6.25            145         0      Not Applicable
  03/14/2026 02 AM PDT            6.24            144         -      Not Applicable
  03/14/2026 03 AM PDT            6.24            144         0      Not Applicable
  03/14/2026 04 AM PDT            6.24            144         0      Not Applicable
  03/14/2026 05 AM PDT            6.24            144         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.