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 02 2026 at 7:15 AM PSTNext Issuance: Mar 02 2026 at 3:00 PM PST
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:  03/02/2026 at 07:17 AM PST
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  02/25/2026 at 07:00 AM PST
# Maximum Observed Stage:                       17.84 Feet
# Maximum Observed Flow:                        6787 cfs
#
# Earliest Date & Time of Maximum Forecast:     03/02/2026 at 08:00 AM PST
# Maximum Forecast Stage:                       7.61 Feet
# Maximum Forecast Flow:                        515 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  02/25/2026 07 AM PST           17.84           6787                Not Applicable
  02/25/2026 08 AM PST           17.21           6290         -      Not Applicable
  02/25/2026 09 AM PST           16.61           5829         -      Not Applicable
  02/25/2026 10 AM PST           16.12           5464         -      Not Applicable
  02/25/2026 11 AM PST           15.62           5100         -      Not Applicable
  02/25/2026 12 PM PST           15.21           4809         -      Not Applicable
  02/25/2026 01 PM PST           14.86           4566         -      Not Applicable
  02/25/2026 02 PM PST           14.46           4295         -      Not Applicable
  02/25/2026 03 PM PST           14.14           4082         -      Not Applicable
  02/25/2026 04 PM PST           13.82           3874         -      Not Applicable
  02/25/2026 05 PM PST           13.57           3714         -      Not Applicable
  02/25/2026 06 PM PST           13.26           3519         -      Not Applicable
  02/25/2026 07 PM PST           13.03           3377         -      Not Applicable
  02/25/2026 08 PM PST           12.80           3238         -      Not Applicable
  02/25/2026 09 PM PST           12.59           3112         -      Not Applicable
  02/25/2026 10 PM PST           12.40           3001         -      Not Applicable
  02/25/2026 11 PM PST           12.20           2885         -      Not Applicable
  02/26/2026 12 AM PST           12.01           2776         -      Not Applicable
  02/26/2026 01 AM PST           11.89           2709         -      Not Applicable
  02/26/2026 02 AM PST           11.73           2620         -      Not Applicable
  02/26/2026 03 AM PST           11.57           2531         -      Not Applicable
  02/26/2026 04 AM PST           11.44           2461         -      Not Applicable
  02/26/2026 05 AM PST           11.29           2380         -      Not Applicable
  02/26/2026 06 AM PST           11.17           2317         -      Not Applicable
  02/26/2026 07 AM PST           11.06           2259         -      Not Applicable
  02/26/2026 08 AM PST           10.92           2180         -      Not Applicable
  02/26/2026 09 AM PST           10.84           2133         -      Not Applicable
  02/26/2026 10 AM PST           10.74           2075         -      Not Applicable
  02/26/2026 11 AM PST           10.61           2001         -      Not Applicable
  02/26/2026 12 PM PST           10.51           1945         -      Not Applicable
  02/26/2026 01 PM PST           10.46           1917         -      Not Applicable
  02/26/2026 02 PM PST           10.36           1861         -      Not Applicable
  02/26/2026 03 PM PST           10.28           1817         -      Not Applicable
  02/26/2026 04 PM PST           10.18           1763         -      Not Applicable
  02/26/2026 05 PM PST           10.11           1725         -      Not Applicable
  02/26/2026 06 PM PST           10.03           1682         -      Not Applicable
  02/26/2026 07 PM PST            9.93           1629         -      Not Applicable
  02/26/2026 08 PM PST            9.87           1598         -      Not Applicable
  02/26/2026 09 PM PST            9.78           1551         -      Not Applicable
  02/26/2026 10 PM PST            9.74           1531         -      Not Applicable
  02/26/2026 11 PM PST            9.66           1490         -      Not Applicable
  02/27/2026 12 AM PST            9.59           1455         -      Not Applicable
  02/27/2026 01 AM PST            9.56           1440         -      Not Applicable
  02/27/2026 02 AM PST            9.50           1410         -      Not Applicable
  02/27/2026 03 AM PST            9.43           1375         -      Not Applicable
  02/27/2026 04 AM PST            9.38           1351         -      Not Applicable
  02/27/2026 05 AM PST            9.32           1322         -      Not Applicable
  02/27/2026 06 AM PST            9.28           1302         -      Not Applicable
  02/27/2026 07 AM PST            9.22           1274         -      Not Applicable
  02/27/2026 08 AM PST            9.17           1248         -      Not Applicable
  02/27/2026 09 AM PST            9.13           1227         -      Not Applicable
  02/27/2026 10 AM PST            9.09           1206         -      Not Applicable
  02/27/2026 11 AM PST            9.04           1179         -      Not Applicable
  02/27/2026 12 PM PST            9.01           1164         -      Not Applicable
  02/27/2026 01 PM PST            8.97           1143         -      Not Applicable
  02/27/2026 02 PM PST            8.92           1122         -      Not Applicable
  02/27/2026 03 PM PST            8.90           1114         -      Not Applicable
  02/27/2026 04 PM PST            8.88           1105         -      Not Applicable
  02/27/2026 05 PM PST            8.82           1081         -      Not Applicable
  02/27/2026 06 PM PST            8.78           1064         -      Not Applicable
  02/27/2026 07 PM PST            8.76           1056         -      Not Applicable
  02/27/2026 08 PM PST            8.72           1037         -      Not Applicable
  02/27/2026 09 PM PST            8.68           1017         -      Not Applicable
  02/27/2026 10 PM PST            8.65           1003         -      Not Applicable
  02/27/2026 11 PM PST            8.62            988         -      Not Applicable
  02/28/2026 12 AM PST            8.60            978         -      Not Applicable
  02/28/2026 01 AM PST            8.57            964         -      Not Applicable
  02/28/2026 02 AM PST            8.53            944         -      Not Applicable
  02/28/2026 03 AM PST            8.52            940         -      Not Applicable
  02/28/2026 04 AM PST            8.49            925         -      Not Applicable
  02/28/2026 05 AM PST            8.47            916         -      Not Applicable
  02/28/2026 06 AM PST            8.46            911         -      Not Applicable
  02/28/2026 07 AM PST            8.43            898         -      Not Applicable
  02/28/2026 08 AM PST            8.40            882         -      Not Applicable
  02/28/2026 09 AM PST            8.39            876         -      Not Applicable
  02/28/2026 10 AM PST            8.37            865         -      Not Applicable
  02/28/2026 11 AM PST            8.35            855         -      Not Applicable
  02/28/2026 12 PM PST            8.33            844         -      Not Applicable
  02/28/2026 01 PM PST            8.30            828         -      Not Applicable
  02/28/2026 02 PM PST            8.30            828         0      Not Applicable
  02/28/2026 03 PM PST            8.28            818         -      Not Applicable
  02/28/2026 04 PM PST            8.26            807         -      Not Applicable
  02/28/2026 05 PM PST            8.24            797         -      Not Applicable
  02/28/2026 06 PM PST            8.22            787         -      Not Applicable
  02/28/2026 07 PM PST            8.18            767         -      Not Applicable
  02/28/2026 08 PM PST            8.16            757         -      Not Applicable
  02/28/2026 09 PM PST            8.15            752         -      Not Applicable
  02/28/2026 10 PM PST            8.12            737         -      Not Applicable
  02/28/2026 11 PM PST            8.10            727         -      Not Applicable
  03/01/2026 12 AM PST            8.07            713         -      Not Applicable
  03/01/2026 01 AM PST            8.04            699         -      Not Applicable
  03/01/2026 02 AM PST            8.04            699         0      Not Applicable
  03/01/2026 03 AM PST            8.03            694         -      Not Applicable
  03/01/2026 04 AM PST            8.00            680         -      Not Applicable
  03/01/2026 05 AM PST            7.97            666         -      Not Applicable
  03/01/2026 06 AM PST            7.96            662         -      Not Applicable
  03/01/2026 07 AM PST            7.96            662         0      Not Applicable
  03/01/2026 08 AM PST            7.93            648         -      Not Applicable
  03/01/2026 09 AM PST            7.91            639         -      Not Applicable
  03/01/2026 10 AM PST            7.90            635         -      Not Applicable
  03/01/2026 11 AM PST            7.89            630         -      Not Applicable
  03/01/2026 12 PM PST            7.86            617         -      Not Applicable
  03/01/2026 01 PM PST            7.87            622         +      Not Applicable
  03/01/2026 02 PM PST            7.86            617         -      Not Applicable
  03/01/2026 03 PM PST            7.83            604         -      Not Applicable
  03/01/2026 04 PM PST            7.84            609         +      Not Applicable
  03/01/2026 05 PM PST            7.81            596         -      Not Applicable
  03/01/2026 06 PM PST            7.79            587         -      Not Applicable
  03/01/2026 07 PM PST            7.78            583         -      Not Applicable
  03/01/2026 08 PM PST            7.77            579         -      Not Applicable
  03/01/2026 09 PM PST            7.73            562         -      Not Applicable
  03/01/2026 10 PM PST            7.72            558         -      Not Applicable
  03/01/2026 11 PM PST            7.72            558         0      Not Applicable
  03/02/2026 12 AM PST            7.71            554         -      Not Applicable
  03/02/2026 01 AM PST            7.70            550         -      Not Applicable
  03/02/2026 02 AM PST            7.66            534         -      Not Applicable
  03/02/2026 03 AM PST            7.67            538         +      Not Applicable
  03/02/2026 04 AM PST            7.64            526         -      Not Applicable
  03/02/2026 05 AM PST            7.63            523         -      Not Applicable
  03/02/2026 06 AM PST            7.62            519         -      Not Applicable
  03/02/2026 07 AM PST            7.62            519         0      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  03/02/2026 08 AM PST            7.61            515                Not Applicable
  03/02/2026 09 AM PST            7.60            511         -      Not Applicable
  03/02/2026 10 AM PST            7.59            507         -      Not Applicable
  03/02/2026 11 AM PST            7.58            503         -      Not Applicable
  03/02/2026 12 PM PST            7.58            503         0      Not Applicable
  03/02/2026 01 PM PST            7.57            499         -      Not Applicable
  03/02/2026 02 PM PST            7.56            496         -      Not Applicable
  03/02/2026 03 PM PST            7.55            492         -      Not Applicable
  03/02/2026 04 PM PST            7.54            488         -      Not Applicable
  03/02/2026 05 PM PST            7.53            484         -      Not Applicable
  03/02/2026 06 PM PST            7.53            484         0      Not Applicable
  03/02/2026 07 PM PST            7.52            481         -      Not Applicable
  03/02/2026 08 PM PST            7.51            477         -      Not Applicable
  03/02/2026 09 PM PST            7.50            473         -      Not Applicable
  03/02/2026 10 PM PST            7.49            470         -      Not Applicable
  03/02/2026 11 PM PST            7.48            466         -      Not Applicable
  03/03/2026 12 AM PST            7.47            463         -      Not Applicable
  03/03/2026 01 AM PST            7.46            459         -      Not Applicable
  03/03/2026 02 AM PST            7.46            459         0      Not Applicable
  03/03/2026 03 AM PST            7.45            455         -      Not Applicable
  03/03/2026 04 AM PST            7.44            452         -      Not Applicable
  03/03/2026 05 AM PST            7.43            448         -      Not Applicable
  03/03/2026 06 AM PST            7.42            445         -      Not Applicable
  03/03/2026 07 AM PST            7.41            441         -      Not Applicable
  03/03/2026 08 AM PST            7.40            438         -      Not Applicable
  03/03/2026 09 AM PST            7.39            434         -      Not Applicable
  03/03/2026 10 AM PST            7.39            434         0      Not Applicable
  03/03/2026 11 AM PST            7.38            431         -      Not Applicable
  03/03/2026 12 PM PST            7.37            427         -      Not Applicable
  03/03/2026 01 PM PST            7.36            424         -      Not Applicable
  03/03/2026 02 PM PST            7.35            421         -      Not Applicable
  03/03/2026 03 PM PST            7.34            417         -      Not Applicable
  03/03/2026 04 PM PST            7.34            417         0      Not Applicable
  03/03/2026 05 PM PST            7.33            414         -      Not Applicable
  03/03/2026 06 PM PST            7.32            410         -      Not Applicable
  03/03/2026 07 PM PST            7.31            407         -      Not Applicable
  03/03/2026 08 PM PST            7.30            404         -      Not Applicable
  03/03/2026 09 PM PST            7.29            401         -      Not Applicable
  03/03/2026 10 PM PST            7.29            401         0      Not Applicable
  03/03/2026 11 PM PST            7.28            397         -      Not Applicable
  03/04/2026 12 AM PST            7.27            394         -      Not Applicable
  03/04/2026 01 AM PST            7.26            391         -      Not Applicable
  03/04/2026 02 AM PST            7.25            388         -      Not Applicable
  03/04/2026 03 AM PST            7.25            388         0      Not Applicable
  03/04/2026 04 AM PST            7.24            384         -      Not Applicable
  03/04/2026 05 AM PST            7.23            381         -      Not Applicable
  03/04/2026 06 AM PST            7.22            378         -      Not Applicable
  03/04/2026 07 AM PST            7.22            378         0      Not Applicable
  03/04/2026 08 AM PST            7.21            375         -      Not Applicable
  03/04/2026 09 AM PST            7.20            372         -      Not Applicable
  03/04/2026 10 AM PST            7.20            372         0      Not Applicable
  03/04/2026 11 AM PST            7.19            369         -      Not Applicable
  03/04/2026 12 PM PST            7.18            365         -      Not Applicable
  03/04/2026 01 PM PST            7.18            365         0      Not Applicable
  03/04/2026 02 PM PST            7.17            362         -      Not Applicable
  03/04/2026 03 PM PST            7.17            362         0      Not Applicable
  03/04/2026 04 PM PST            7.16            359         -      Not Applicable
  03/04/2026 05 PM PST            7.16            359         0      Not Applicable
  03/04/2026 06 PM PST            7.15            356         -      Not Applicable
  03/04/2026 07 PM PST            7.14            353         -      Not Applicable
  03/04/2026 08 PM PST            7.14            353         0      Not Applicable
  03/04/2026 09 PM PST            7.13            350         -      Not Applicable
  03/04/2026 10 PM PST            7.13            350         0      Not Applicable
  03/04/2026 11 PM PST            7.12            347         -      Not Applicable
  03/05/2026 12 AM PST            7.12            347         0      Not Applicable
  03/05/2026 01 AM PST            7.11            344         -      Not Applicable
  03/05/2026 02 AM PST            7.10            341         -      Not Applicable
  03/05/2026 03 AM PST            7.10            341         0      Not Applicable
  03/05/2026 04 AM PST            7.09            338         -      Not Applicable
  03/05/2026 05 AM PST            7.09            338         0      Not Applicable
  03/05/2026 06 AM PST            7.08            335         -      Not Applicable
  03/05/2026 07 AM PST            7.08            335         0      Not Applicable
  03/05/2026 08 AM PST            7.07            332         -      Not Applicable
  03/05/2026 09 AM PST            7.07            332         0      Not Applicable
  03/05/2026 10 AM PST            7.06            330         -      Not Applicable
  03/05/2026 11 AM PST            7.05            327         -      Not Applicable
  03/05/2026 12 PM PST            7.05            327         0      Not Applicable
  03/05/2026 01 PM PST            7.04            324         -      Not Applicable
  03/05/2026 02 PM PST            7.04            324         0      Not Applicable
  03/05/2026 03 PM PST            7.03            321         -      Not Applicable
  03/05/2026 04 PM PST            7.03            321         0      Not Applicable
  03/05/2026 05 PM PST            7.02            318         -      Not Applicable
  03/05/2026 06 PM PST            7.02            318         0      Not Applicable
  03/05/2026 07 PM PST            7.01            315         -      Not Applicable
  03/05/2026 08 PM PST            7.01            315         0      Not Applicable
  03/05/2026 09 PM PST            7.00            312         -      Not Applicable
  03/05/2026 10 PM PST            7.00            312         0      Not Applicable
  03/05/2026 11 PM PST            6.99            310         -      Not Applicable
  03/06/2026 12 AM PST            6.99            310         0      Not Applicable
  03/06/2026 01 AM PST            6.98            307         -      Not Applicable
  03/06/2026 02 AM PST            6.98            307         0      Not Applicable
  03/06/2026 03 AM PST            6.97            304         -      Not Applicable
  03/06/2026 04 AM PST            6.97            304         0      Not Applicable
  03/06/2026 05 AM PST            6.96            301         -      Not Applicable
  03/06/2026 06 AM PST            6.96            301         0      Not Applicable
  03/06/2026 07 AM PST            6.96            301         0      Not Applicable
  03/06/2026 08 AM PST            6.95            299         -      Not Applicable
  03/06/2026 09 AM PST            6.95            299         0      Not Applicable
  03/06/2026 10 AM PST            6.94            296         -      Not Applicable
  03/06/2026 11 AM PST            6.94            296         0      Not Applicable
  03/06/2026 12 PM PST            6.93            293         -      Not Applicable
  03/06/2026 01 PM PST            6.93            293         0      Not Applicable
  03/06/2026 02 PM PST            6.92            291         -      Not Applicable
  03/06/2026 03 PM PST            6.92            291         0      Not Applicable
  03/06/2026 04 PM PST            6.91            288         -      Not Applicable
  03/06/2026 05 PM PST            6.91            288         0      Not Applicable
  03/06/2026 06 PM PST            6.90            285         -      Not Applicable
  03/06/2026 07 PM PST            6.90            285         0      Not Applicable
  03/06/2026 08 PM PST            6.89            283         -      Not Applicable
  03/06/2026 09 PM PST            6.89            283         0      Not Applicable
  03/06/2026 10 PM PST            6.89            283         0      Not Applicable
  03/06/2026 11 PM PST            6.88            280         -      Not Applicable
  03/07/2026 12 AM PST            6.88            280         0      Not Applicable
  03/07/2026 01 AM PST            6.87            277         -      Not Applicable
  03/07/2026 02 AM PST            6.87            277         0      Not Applicable
  03/07/2026 03 AM PST            6.87            277         0      Not Applicable
  03/07/2026 04 AM PST            6.86            275         -      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.