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

 | 

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: Jan 09 2026 at 7:07 AM PSTNext Issuance: Jan 09 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:  01/09/2026 at 07:09 AM PST
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  01/05/2026 at 07:00 PM PST
# Maximum Observed Stage:                       25.66 Feet
# Maximum Observed Flow:                        14114 cfs
#
# Earliest Date & Time of Maximum Forecast:     01/09/2026 at 08:00 AM PST
# Maximum Forecast Stage:                       8.67 Feet
# Maximum Forecast Flow:                        1135 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  01/04/2026 07 AM PST           12.21           2891                Not Applicable
  01/04/2026 08 AM PST           12.81           3244         +      Not Applicable
  01/04/2026 09 AM PST           13.16           3457         +      Not Applicable
  01/04/2026 10 AM PST           13.29           3538         +      Not Applicable
  01/04/2026 11 AM PST           13.27           3525         -      Not Applicable
  01/04/2026 12 PM PST           13.26           3519         -      Not Applicable
  01/04/2026 01 PM PST           13.18           3469         -      Not Applicable
  01/04/2026 02 PM PST           13.00           3359         -      Not Applicable
  01/04/2026 03 PM PST           12.74           3202         -      Not Applicable
  01/04/2026 04 PM PST           12.49           3053         -      Not Applicable
  01/04/2026 05 PM PST           12.30           2943         -      Not Applicable
  01/04/2026 06 PM PST           12.15           2856         -      Not Applicable
  01/04/2026 07 PM PST           12.00           2771         -      Not Applicable
  01/04/2026 08 PM PST           11.86           2692         -      Not Applicable
  01/04/2026 09 PM PST           11.72           2614         -      Not Applicable
  01/04/2026 10 PM PST           11.58           2537         -      Not Applicable
  01/04/2026 11 PM PST           11.44           2461         -      Not Applicable
  01/05/2026 12 AM PST           11.30           2386         -      Not Applicable
  01/05/2026 01 AM PST           11.21           2338         -      Not Applicable
  01/05/2026 02 AM PST           11.13           2295         -      Not Applicable
  01/05/2026 03 AM PST           11.14           2301         +      Not Applicable
  01/05/2026 04 AM PST           11.16           2311         +      Not Applicable
  01/05/2026 05 AM PST           11.33           2402         +      Not Applicable
  01/05/2026 06 AM PST           11.64           2570         +      Not Applicable
  01/05/2026 07 AM PST           12.16           2862         +      Not Applicable
  01/05/2026 08 AM PST           12.87           3280         +      Not Applicable
  01/05/2026 09 AM PST           14.10           4056         +      Not Applicable
  01/05/2026 10 AM PST           15.34           4901         +      Not Applicable
  01/05/2026 11 AM PST           16.38           5657         +      Not Applicable
  01/05/2026 12 PM PST           17.43           6462         +      Not Applicable
  01/05/2026 01 PM PST           18.51           7333         +      Not Applicable
  01/05/2026 02 PM PST           19.57           8228         +      Not Applicable
  01/05/2026 03 PM PST           20.89           9399         +      Not Applicable
  01/05/2026 04 PM PST           22.78          11178         +      Not Applicable
  01/05/2026 05 PM PST           24.28          12674         +      Not Applicable
  01/05/2026 06 PM PST           25.38          13817         +      Not Applicable
  01/05/2026 07 PM PST           25.66          14114         +      Not Applicable
  01/05/2026 08 PM PST           25.38          13817         -      Not Applicable
  01/05/2026 09 PM PST           24.68          13086         -      Not Applicable
  01/05/2026 10 PM PST           23.88          12268         -      Not Applicable
  01/05/2026 11 PM PST           23.12          11511         -      Not Applicable
  01/06/2026 12 AM PST           22.46          10869         -      Not Applicable
  01/06/2026 01 AM PST           21.95          10382         -      Not Applicable
  01/06/2026 02 AM PST           21.53           9988         -      Not Applicable
  01/06/2026 03 AM PST           21.19           9673         -      Not Applicable
  01/06/2026 04 AM PST           20.73           9254         -      Not Applicable
  01/06/2026 05 AM PST           20.11           8700         -      Not Applicable
  01/06/2026 06 AM PST           19.39           8073         -      Not Applicable
  01/06/2026 07 AM PST           18.74           7524         -      Not Applicable
  01/06/2026 08 AM PST           18.17           7054         -      Not Applicable
  01/06/2026 09 AM PST           17.63           6620         -      Not Applicable
  01/06/2026 10 AM PST           17.14           6235         -      Not Applicable
  01/06/2026 11 AM PST           16.73           5920         -      Not Applicable
  01/06/2026 12 PM PST           16.31           5604         -      Not Applicable
  01/06/2026 01 PM PST           15.93           5324         -      Not Applicable
  01/06/2026 02 PM PST           15.56           5057         -      Not Applicable
  01/06/2026 03 PM PST           15.24           4830         -      Not Applicable
  01/06/2026 04 PM PST           14.97           4642         -      Not Applicable
  01/06/2026 05 PM PST           14.65           4423         -      Not Applicable
  01/06/2026 06 PM PST           14.38           4241         -      Not Applicable
  01/06/2026 07 PM PST           14.13           4075         -      Not Applicable
  01/06/2026 08 PM PST           13.86           3899         -      Not Applicable
  01/06/2026 09 PM PST           13.63           3752         -      Not Applicable
  01/06/2026 10 PM PST           13.43           3625         -      Not Applicable
  01/06/2026 11 PM PST           13.20           3482         -      Not Applicable
  01/07/2026 12 AM PST           13.05           3390         -      Not Applicable
  01/07/2026 01 AM PST           12.85           3268         -      Not Applicable
  01/07/2026 02 AM PST           12.66           3154         -      Not Applicable
  01/07/2026 03 AM PST           12.50           3059         -      Not Applicable
  01/07/2026 04 AM PST           12.34           2966         -      Not Applicable
  01/07/2026 05 AM PST           12.22           2896         -      Not Applicable
  01/07/2026 06 AM PST           12.04           2793         -      Not Applicable
  01/07/2026 07 AM PST           11.91           2720         -      Not Applicable
  01/07/2026 08 AM PST           11.78           2647         -      Not Applicable
  01/07/2026 09 AM PST           11.63           2564         -      Not Applicable
  01/07/2026 10 AM PST           11.52           2504         -      Not Applicable
  01/07/2026 11 AM PST           11.38           2428         -      Not Applicable
  01/07/2026 12 PM PST           11.31           2391         -      Not Applicable
  01/07/2026 01 PM PST           11.21           2338         -      Not Applicable
  01/07/2026 02 PM PST           11.07           2264         -      Not Applicable
  01/07/2026 03 PM PST           10.98           2217         -      Not Applicable
  01/07/2026 04 PM PST           10.90           2176         -      Not Applicable
  01/07/2026 05 PM PST           10.80           2124         -      Not Applicable
  01/07/2026 06 PM PST           10.69           2068         -      Not Applicable
  01/07/2026 07 PM PST           10.61           2028         -      Not Applicable
  01/07/2026 08 PM PST           10.51           1978         -      Not Applicable
  01/07/2026 09 PM PST           10.46           1953         -      Not Applicable
  01/07/2026 10 PM PST           10.40           1924         -      Not Applicable
  01/07/2026 11 PM PST           10.33           1890         -      Not Applicable
  01/08/2026 12 AM PST           10.24           1846         -      Not Applicable
  01/08/2026 01 AM PST           10.19           1822         -      Not Applicable
  01/08/2026 02 AM PST           10.11           1783         -      Not Applicable
  01/08/2026 03 AM PST           10.04           1750         -      Not Applicable
  01/08/2026 04 AM PST            9.96           1712         -      Not Applicable
  01/08/2026 05 AM PST            9.88           1675         -      Not Applicable
  01/08/2026 06 AM PST            9.81           1643         -      Not Applicable
  01/08/2026 07 AM PST            9.74           1610         -      Not Applicable
  01/08/2026 08 AM PST            9.72           1601         -      Not Applicable
  01/08/2026 09 AM PST            9.64           1565         -      Not Applicable
  01/08/2026 10 AM PST            9.58           1538         -      Not Applicable
  01/08/2026 11 AM PST            9.53           1515         -      Not Applicable
  01/08/2026 12 PM PST            9.49           1497         -      Not Applicable
  01/08/2026 01 PM PST            9.41           1462         -      Not Applicable
  01/08/2026 02 PM PST            9.36           1440         -      Not Applicable
  01/08/2026 03 PM PST            9.32           1422         -      Not Applicable
  01/08/2026 04 PM PST            9.29           1409         -      Not Applicable
  01/08/2026 05 PM PST            9.19           1366         -      Not Applicable
  01/08/2026 06 PM PST            9.17           1357         -      Not Applicable
  01/08/2026 07 PM PST            9.11           1332         -      Not Applicable
  01/08/2026 08 PM PST            9.08           1319         -      Not Applicable
  01/08/2026 09 PM PST            9.05           1306         -      Not Applicable
  01/08/2026 10 PM PST            9.00           1285         -      Not Applicable
  01/08/2026 11 PM PST            8.96           1268         -      Not Applicable
  01/09/2026 12 AM PST            8.92           1251         -      Not Applicable
  01/09/2026 01 AM PST            8.88           1232         -      Not Applicable
  01/09/2026 02 AM PST            8.86           1222         -      Not Applicable
  01/09/2026 03 AM PST            8.82           1204         -      Not Applicable
  01/09/2026 04 AM PST            8.79           1190         -      Not Applicable
  01/09/2026 05 AM PST            8.76           1176         -      Not Applicable
  01/09/2026 06 AM PST            8.73           1162         -      Not Applicable
  01/09/2026 07 AM PST            8.70           1148         -      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  01/09/2026 08 AM PST            8.67           1135                Not Applicable
  01/09/2026 09 AM PST            8.64           1121         -      Not Applicable
  01/09/2026 10 AM PST            8.61           1108         -      Not Applicable
  01/09/2026 11 AM PST            8.58           1094         -      Not Applicable
  01/09/2026 12 PM PST            8.55           1081         -      Not Applicable
  01/09/2026 01 PM PST            8.52           1068         -      Not Applicable
  01/09/2026 02 PM PST            8.49           1054         -      Not Applicable
  01/09/2026 03 PM PST            8.47           1045         -      Not Applicable
  01/09/2026 04 PM PST            8.44           1028         -      Not Applicable
  01/09/2026 05 PM PST            8.42           1018         -      Not Applicable
  01/09/2026 06 PM PST            8.40           1007         -      Not Applicable
  01/09/2026 07 PM PST            8.38            996         -      Not Applicable
  01/09/2026 08 PM PST            8.36            986         -      Not Applicable
  01/09/2026 09 PM PST            8.33            970         -      Not Applicable
  01/09/2026 10 PM PST            8.31            960         -      Not Applicable
  01/09/2026 11 PM PST            8.29            950         -      Not Applicable
  01/10/2026 12 AM PST            8.27            939         -      Not Applicable
  01/10/2026 01 AM PST            8.25            929         -      Not Applicable
  01/10/2026 02 AM PST            8.23            919         -      Not Applicable
  01/10/2026 03 AM PST            8.21            909         -      Not Applicable
  01/10/2026 04 AM PST            8.19            899         -      Not Applicable
  01/10/2026 05 AM PST            8.17            888         -      Not Applicable
  01/10/2026 06 AM PST            8.15            876         -      Not Applicable
  01/10/2026 07 AM PST            8.14            870         -      Not Applicable
  01/10/2026 08 AM PST            8.12            859         -      Not Applicable
  01/10/2026 09 AM PST            8.10            847         -      Not Applicable
  01/10/2026 10 AM PST            8.09            842         -      Not Applicable
  01/10/2026 11 AM PST            8.07            830         -      Not Applicable
  01/10/2026 12 PM PST            8.05            819         -      Not Applicable
  01/10/2026 01 PM PST            8.04            813         -      Not Applicable
  01/10/2026 02 PM PST            8.02            802         -      Not Applicable
  01/10/2026 03 PM PST            8.00            791         -      Not Applicable
  01/10/2026 04 PM PST            7.99            786         -      Not Applicable
  01/10/2026 05 PM PST            7.97            775         -      Not Applicable
  01/10/2026 06 PM PST            7.96            769         -      Not Applicable
  01/10/2026 07 PM PST            7.94            759         -      Not Applicable
  01/10/2026 08 PM PST            7.92            748         -      Not Applicable
  01/10/2026 09 PM PST            7.91            743         -      Not Applicable
  01/10/2026 10 PM PST            7.89            732         -      Not Applicable
  01/10/2026 11 PM PST            7.88            727         -      Not Applicable
  01/11/2026 12 AM PST            7.86            717         -      Not Applicable
  01/11/2026 01 AM PST            7.84            707         -      Not Applicable
  01/11/2026 02 AM PST            7.83            701         -      Not Applicable
  01/11/2026 03 AM PST            7.81            691         -      Not Applicable
  01/11/2026 04 AM PST            7.79            681         -      Not Applicable
  01/11/2026 05 AM PST            7.78            676         -      Not Applicable
  01/11/2026 06 AM PST            7.76            667         -      Not Applicable
  01/11/2026 07 AM PST            7.75            662         -      Not Applicable
  01/11/2026 08 AM PST            7.73            652         -      Not Applicable
  01/11/2026 09 AM PST            7.71            642         -      Not Applicable
  01/11/2026 10 AM PST            7.70            638         -      Not Applicable
  01/11/2026 11 AM PST            7.68            628         -      Not Applicable
  01/11/2026 12 PM PST            7.67            623         -      Not Applicable
  01/11/2026 01 PM PST            7.65            614         -      Not Applicable
  01/11/2026 02 PM PST            7.63            605         -      Not Applicable
  01/11/2026 03 PM PST            7.62            600         -      Not Applicable
  01/11/2026 04 PM PST            7.60            591         -      Not Applicable
  01/11/2026 05 PM PST            7.58            582         -      Not Applicable
  01/11/2026 06 PM PST            7.58            582         0      Not Applicable
  01/11/2026 07 PM PST            7.57            577         -      Not Applicable
  01/11/2026 08 PM PST            7.56            573         -      Not Applicable
  01/11/2026 09 PM PST            7.55            569         -      Not Applicable
  01/11/2026 10 PM PST            7.54            564         -      Not Applicable
  01/11/2026 11 PM PST            7.54            564         0      Not Applicable
  01/12/2026 12 AM PST            7.53            560         -      Not Applicable
  01/12/2026 01 AM PST            7.52            555         -      Not Applicable
  01/12/2026 02 AM PST            7.51            551         -      Not Applicable
  01/12/2026 03 AM PST            7.50            547         -      Not Applicable
  01/12/2026 04 AM PST            7.50            547         0      Not Applicable
  01/12/2026 05 AM PST            7.49            542         -      Not Applicable
  01/12/2026 06 AM PST            7.48            538         -      Not Applicable
  01/12/2026 07 AM PST            7.47            534         -      Not Applicable
  01/12/2026 08 AM PST            7.46            530         -      Not Applicable
  01/12/2026 09 AM PST            7.46            530         0      Not Applicable
  01/12/2026 10 AM PST            7.45            525         -      Not Applicable
  01/12/2026 11 AM PST            7.44            521         -      Not Applicable
  01/12/2026 12 PM PST            7.43            517         -      Not Applicable
  01/12/2026 01 PM PST            7.43            517         0      Not Applicable
  01/12/2026 02 PM PST            7.42            513         -      Not Applicable
  01/12/2026 03 PM PST            7.41            509         -      Not Applicable
  01/12/2026 04 PM PST            7.41            509         0      Not Applicable
  01/12/2026 05 PM PST            7.40            505         -      Not Applicable
  01/12/2026 06 PM PST            7.39            500         -      Not Applicable
  01/12/2026 07 PM PST            7.38            496         -      Not Applicable
  01/12/2026 08 PM PST            7.38            496         0      Not Applicable
  01/12/2026 09 PM PST            7.37            492         -      Not Applicable
  01/12/2026 10 PM PST            7.37            492         0      Not Applicable
  01/12/2026 11 PM PST            7.36            488         -      Not Applicable
  01/13/2026 12 AM PST            7.36            488         0      Not Applicable
  01/13/2026 01 AM PST            7.35            484         -      Not Applicable
  01/13/2026 02 AM PST            7.34            480         -      Not Applicable
  01/13/2026 03 AM PST            7.34            480         0      Not Applicable
  01/13/2026 04 AM PST            7.33            476         -      Not Applicable
  01/13/2026 05 AM PST            7.33            476         0      Not Applicable
  01/13/2026 06 AM PST            7.32            472         -      Not Applicable
  01/13/2026 07 AM PST            7.31            468         -      Not Applicable
  01/13/2026 08 AM PST            7.31            468         0      Not Applicable
  01/13/2026 09 AM PST            7.30            465         -      Not Applicable
  01/13/2026 10 AM PST            7.29            461         -      Not Applicable
  01/13/2026 11 AM PST            7.29            461         0      Not Applicable
  01/13/2026 12 PM PST            7.28            457         -      Not Applicable
  01/13/2026 01 PM PST            7.27            453         -      Not Applicable
  01/13/2026 02 PM PST            7.27            453         0      Not Applicable
  01/13/2026 03 PM PST            7.26            449         -      Not Applicable
  01/13/2026 04 PM PST            7.25            445         -      Not Applicable
  01/13/2026 05 PM PST            7.25            445         0      Not Applicable
  01/13/2026 06 PM PST            7.24            442         -      Not Applicable
  01/13/2026 07 PM PST            7.24            442         0      Not Applicable
  01/13/2026 08 PM PST            7.23            438         -      Not Applicable
  01/13/2026 09 PM PST            7.22            434         -      Not Applicable
  01/13/2026 10 PM PST            7.22            434         0      Not Applicable
  01/13/2026 11 PM PST            7.21            430         -      Not Applicable
  01/14/2026 12 AM PST            7.21            430         0      Not Applicable
  01/14/2026 01 AM PST            7.20            427         -      Not Applicable
  01/14/2026 02 AM PST            7.19            423         -      Not Applicable
  01/14/2026 03 AM PST            7.19            423         0      Not Applicable
  01/14/2026 04 AM PST            7.18            419         -      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.