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: Feb 19 2026 at 2:07 PM PSTNext Issuance: Feb 20 2026 at 9:00 AM 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:  02/19/2026 at 02:09 PM PST
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  02/16/2026 at 01:00 AM PST
# Maximum Observed Stage:                       12.14 Feet
# Maximum Observed Flow:                        2850 cfs
#
# Earliest Date & Time of Maximum Forecast:     02/24/2026 at 04:00 AM PST
# Maximum Forecast Stage:                       15.17 Feet
# Maximum Forecast Flow:                        4781 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  02/14/2026 02 PM PST            5.71             71                Not Applicable
  02/14/2026 03 PM PST            5.71             71         0      Not Applicable
  02/14/2026 04 PM PST            5.70             70         -      Not Applicable
  02/14/2026 05 PM PST            5.70             70         0      Not Applicable
  02/14/2026 06 PM PST            5.70             70         0      Not Applicable
  02/14/2026 07 PM PST            5.70             70         0      Not Applicable
  02/14/2026 08 PM PST            5.70             70         0      Not Applicable
  02/14/2026 09 PM PST            5.70             70         0      Not Applicable
  02/14/2026 10 PM PST            5.72             72         +      Not Applicable
  02/14/2026 11 PM PST            5.73             73         +      Not Applicable
  02/15/2026 12 AM PST            5.74             74         +      Not Applicable
  02/15/2026 01 AM PST            5.77             77         +      Not Applicable
  02/15/2026 02 AM PST            5.78             78         +      Not Applicable
  02/15/2026 03 AM PST            5.81             82         +      Not Applicable
  02/15/2026 04 AM PST            5.82             83         +      Not Applicable
  02/15/2026 05 AM PST            5.82             83         0      Not Applicable
  02/15/2026 06 AM PST            5.85             87         +      Not Applicable
  02/15/2026 07 AM PST            5.89             92         +      Not Applicable
  02/15/2026 08 AM PST            5.91             94         +      Not Applicable
  02/15/2026 09 AM PST            5.97            102         +      Not Applicable
  02/15/2026 10 AM PST            6.03            111         +      Not Applicable
  02/15/2026 11 AM PST            6.09            119         +      Not Applicable
  02/15/2026 12 PM PST            6.17            132         +      Not Applicable
  02/15/2026 01 PM PST            6.29            152         +      Not Applicable
  02/15/2026 02 PM PST            6.46            183         +      Not Applicable
  02/15/2026 03 PM PST            7.02            317         +      Not Applicable
  02/15/2026 04 PM PST            7.43            461         +      Not Applicable
  02/15/2026 05 PM PST            7.75            609         +      Not Applicable
  02/15/2026 06 PM PST            8.01            749         +      Not Applicable
  02/15/2026 07 PM PST            8.25            896         +      Not Applicable
  02/15/2026 08 PM PST            8.53           1054         +      Not Applicable
  02/15/2026 09 PM PST            8.91           1242         +      Not Applicable
  02/15/2026 10 PM PST           10.22           1836         +      Not Applicable
  02/15/2026 11 PM PST           11.68           2592         +      Not Applicable
  02/16/2026 12 AM PST           12.05           2799         +      Not Applicable
  02/16/2026 01 AM PST           12.14           2850         +      Not Applicable
  02/16/2026 02 AM PST           12.07           2810         -      Not Applicable
  02/16/2026 03 AM PST           11.89           2709         -      Not Applicable
  02/16/2026 04 AM PST           11.48           2482         -      Not Applicable
  02/16/2026 05 AM PST           11.12           2290         -      Not Applicable
  02/16/2026 06 AM PST           10.79           2119         -      Not Applicable
  02/16/2026 07 AM PST           10.53           1988         -      Not Applicable
  02/16/2026 08 AM PST           10.23           1841         -      Not Applicable
  02/16/2026 09 AM PST            9.99           1727         -      Not Applicable
  02/16/2026 10 AM PST            9.75           1615         -      Not Applicable
  02/16/2026 11 AM PST            9.57           1533         -      Not Applicable
  02/16/2026 12 PM PST            9.40           1457         -      Not Applicable
  02/16/2026 01 PM PST            9.24           1387         -      Not Applicable
  02/16/2026 02 PM PST            9.11           1332         -      Not Applicable
  02/16/2026 03 PM PST            8.95           1262         -      Not Applicable
  02/16/2026 04 PM PST            8.85           1211         -      Not Applicable
  02/16/2026 05 PM PST            8.73           1151         -      Not Applicable
  02/16/2026 06 PM PST            8.65           1112         -      Not Applicable
  02/16/2026 07 PM PST            8.57           1073         -      Not Applicable
  02/16/2026 08 PM PST            8.51           1043         -      Not Applicable
  02/16/2026 09 PM PST            8.43            996         -      Not Applicable
  02/16/2026 10 PM PST            8.36            956         -      Not Applicable
  02/16/2026 11 PM PST            8.32            934         -      Not Applicable
  02/17/2026 12 AM PST            8.25            896         -      Not Applicable
  02/17/2026 01 AM PST            8.20            864         -      Not Applicable
  02/17/2026 02 AM PST            8.16            839         -      Not Applicable
  02/17/2026 03 AM PST            8.11            808         -      Not Applicable
  02/17/2026 04 AM PST            8.04            767         -      Not Applicable
  02/17/2026 05 AM PST            8.03            761         -      Not Applicable
  02/17/2026 06 AM PST            8.00            743         -      Not Applicable
  02/17/2026 07 AM PST            7.97            726         -      Not Applicable
  02/17/2026 08 AM PST            7.96            721         -      Not Applicable
  02/17/2026 09 AM PST            7.96            721         0      Not Applicable
  02/17/2026 10 AM PST            8.00            743         +      Not Applicable
  02/17/2026 11 AM PST            8.11            808         +      Not Applicable
  02/17/2026 12 PM PST            8.30            923         +      Not Applicable
  02/17/2026 01 PM PST            8.56           1068         +      Not Applicable
  02/17/2026 02 PM PST            8.87           1221         +      Not Applicable
  02/17/2026 03 PM PST            9.15           1349         +      Not Applicable
  02/17/2026 04 PM PST            9.38           1449         +      Not Applicable
  02/17/2026 05 PM PST            9.48           1493         +      Not Applicable
  02/17/2026 06 PM PST            9.50           1502         +      Not Applicable
  02/17/2026 07 PM PST            9.45           1480         -      Not Applicable
  02/17/2026 08 PM PST            9.35           1435         -      Not Applicable
  02/17/2026 09 PM PST            9.28           1405         -      Not Applicable
  02/17/2026 10 PM PST            9.23           1383         -      Not Applicable
  02/17/2026 11 PM PST            9.17           1357         -      Not Applicable
  02/18/2026 12 AM PST            9.13           1340         -      Not Applicable
  02/18/2026 01 AM PST            9.11           1332         -      Not Applicable
  02/18/2026 02 AM PST            9.06           1310         -      Not Applicable
  02/18/2026 03 AM PST            9.00           1285         -      Not Applicable
  02/18/2026 04 AM PST            8.92           1247         -      Not Applicable
  02/18/2026 05 AM PST            8.88           1227         -      Not Applicable
  02/18/2026 06 AM PST            8.80           1186         -      Not Applicable
  02/18/2026 07 AM PST            8.74           1156         -      Not Applicable
  02/18/2026 08 AM PST            8.69           1131         -      Not Applicable
  02/18/2026 09 AM PST            8.64           1107         -      Not Applicable
  02/18/2026 10 AM PST            8.59           1082         -      Not Applicable
  02/18/2026 11 AM PST            8.54           1058         -      Not Applicable
  02/18/2026 12 PM PST            8.51           1043         -      Not Applicable
  02/18/2026 01 PM PST            8.48           1025         -      Not Applicable
  02/18/2026 02 PM PST            8.45           1008         -      Not Applicable
  02/18/2026 03 PM PST            8.39            973         -      Not Applicable
  02/18/2026 04 PM PST            8.40            979         +      Not Applicable
  02/18/2026 05 PM PST            8.39            973         -      Not Applicable
  02/18/2026 06 PM PST            8.39            973         0      Not Applicable
  02/18/2026 07 PM PST            8.37            962         -      Not Applicable
  02/18/2026 08 PM PST            8.36            956         -      Not Applicable
  02/18/2026 09 PM PST            8.33            940         -      Not Applicable
  02/18/2026 10 PM PST            8.32            934         -      Not Applicable
  02/18/2026 11 PM PST            8.30            923         -      Not Applicable
  02/19/2026 12 AM PST            8.30            923         0      Not Applicable
  02/19/2026 01 AM PST            8.28            912         -      Not Applicable
  02/19/2026 02 AM PST            8.28            912         0      Not Applicable
  02/19/2026 03 AM PST            8.29            917         +      Not Applicable
  02/19/2026 04 AM PST            8.30            923         +      Not Applicable
  02/19/2026 05 AM PST            8.33            940         +      Not Applicable
  02/19/2026 06 AM PST            8.39            973         +      Not Applicable
  02/19/2026 07 AM PST            8.44           1002         +      Not Applicable
  02/19/2026 08 AM PST            8.56           1068         +      Not Applicable
  02/19/2026 09 AM PST            8.72           1146         +      Not Applicable
  02/19/2026 10 AM PST            8.92           1247         +      Not Applicable
  02/19/2026 11 AM PST            9.24           1387         +      Not Applicable
  02/19/2026 12 PM PST            9.53           1515         +      Not Applicable
  02/19/2026 01 PM PST            9.77           1624         +      Not Applicable
  02/19/2026 02 PM PST            9.95           1708         +      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  02/19/2026 03 PM PST           10.04           1750                Not Applicable
  02/19/2026 04 PM PST           10.03           1745         -      Not Applicable
  02/19/2026 05 PM PST            9.86           1666         -      Not Applicable
  02/19/2026 06 PM PST            9.63           1560         -      Not Applicable
  02/19/2026 07 PM PST            9.40           1457         -      Not Applicable
  02/19/2026 08 PM PST            9.17           1357         -      Not Applicable
  02/19/2026 09 PM PST            8.94           1257         -      Not Applicable
  02/19/2026 10 PM PST            8.76           1166         -      Not Applicable
  02/19/2026 11 PM PST            8.59           1082         -      Not Applicable
  02/20/2026 12 AM PST            8.44           1002         -      Not Applicable
  02/20/2026 01 AM PST            8.33            940         -      Not Applicable
  02/20/2026 02 AM PST            8.22            877         -      Not Applicable
  02/20/2026 03 AM PST            8.13            820         -      Not Applicable
  02/20/2026 04 AM PST            8.05            772         -      Not Applicable
  02/20/2026 05 AM PST            7.97            726         -      Not Applicable
  02/20/2026 06 AM PST            7.91            693         -      Not Applicable
  02/20/2026 07 AM PST            7.85            661         -      Not Applicable
  02/20/2026 08 AM PST            7.80            634         -      Not Applicable
  02/20/2026 09 AM PST            7.75            609         -      Not Applicable
  02/20/2026 10 AM PST            7.71            589         -      Not Applicable
  02/20/2026 11 AM PST            7.68            574         -      Not Applicable
  02/20/2026 12 PM PST            7.65            560         -      Not Applicable
  02/20/2026 01 PM PST            7.62            545         -      Not Applicable
  02/20/2026 02 PM PST            7.60            536         -      Not Applicable
  02/20/2026 03 PM PST            7.58            527         -      Not Applicable
  02/20/2026 04 PM PST            7.56            518         -      Not Applicable
  02/20/2026 05 PM PST            7.54            509         -      Not Applicable
  02/20/2026 06 PM PST            7.53            504         -      Not Applicable
  02/20/2026 07 PM PST            7.51            495         -      Not Applicable
  02/20/2026 08 PM PST            7.50            491         -      Not Applicable
  02/20/2026 09 PM PST            7.50            491         0      Not Applicable
  02/20/2026 10 PM PST            7.49            487         -      Not Applicable
  02/20/2026 11 PM PST            7.48            482         -      Not Applicable
  02/21/2026 12 AM PST            7.47            478         -      Not Applicable
  02/21/2026 01 AM PST            7.46            474         -      Not Applicable
  02/21/2026 02 AM PST            7.45            469         -      Not Applicable
  02/21/2026 03 AM PST            7.44            465         -      Not Applicable
  02/21/2026 04 AM PST            7.43            461         -      Not Applicable
  02/21/2026 05 AM PST            7.43            461         0      Not Applicable
  02/21/2026 06 AM PST            7.42            457         -      Not Applicable
  02/21/2026 07 AM PST            7.41            453         -      Not Applicable
  02/21/2026 08 AM PST            7.40            448         -      Not Applicable
  02/21/2026 09 AM PST            7.40            448         0      Not Applicable
  02/21/2026 10 AM PST            7.39            444         -      Not Applicable
  02/21/2026 11 AM PST            7.38            440         -      Not Applicable
  02/21/2026 12 PM PST            7.38            440         0      Not Applicable
  02/21/2026 01 PM PST            7.37            436         -      Not Applicable
  02/21/2026 02 PM PST            7.36            432         -      Not Applicable
  02/21/2026 03 PM PST            7.36            432         0      Not Applicable
  02/21/2026 04 PM PST            7.35            428         -      Not Applicable
  02/21/2026 05 PM PST            7.34            424         -      Not Applicable
  02/21/2026 06 PM PST            7.34            424         0      Not Applicable
  02/21/2026 07 PM PST            7.33            420         -      Not Applicable
  02/21/2026 08 PM PST            7.33            420         0      Not Applicable
  02/21/2026 09 PM PST            7.32            416         -      Not Applicable
  02/21/2026 10 PM PST            7.32            416         0      Not Applicable
  02/21/2026 11 PM PST            7.33            420         +      Not Applicable
  02/22/2026 12 AM PST            7.34            424         +      Not Applicable
  02/22/2026 01 AM PST            7.37            436         +      Not Applicable
  02/22/2026 02 AM PST            7.41            453         +      Not Applicable
  02/22/2026 03 AM PST            7.48            482         +      Not Applicable
  02/22/2026 04 AM PST            7.64            555         +      Not Applicable
  02/22/2026 05 AM PST            7.88            677         +      Not Applicable
  02/22/2026 06 AM PST            8.12            814         +      Not Applicable
  02/22/2026 07 AM PST            8.37            962         +      Not Applicable
  02/22/2026 08 AM PST            8.69           1131         +      Not Applicable
  02/22/2026 09 AM PST            9.03           1298         +      Not Applicable
  02/22/2026 10 AM PST            9.38           1449         +      Not Applicable
  02/22/2026 11 AM PST            9.77           1624         +      Not Applicable
  02/22/2026 12 PM PST           10.13           1793         +      Not Applicable
  02/22/2026 01 PM PST           10.41           1929         +      Not Applicable
  02/22/2026 02 PM PST           10.63           2038         +      Not Applicable
  02/22/2026 03 PM PST           10.78           2114         +      Not Applicable
  02/22/2026 04 PM PST           10.85           2150         +      Not Applicable
  02/22/2026 05 PM PST           10.85           2150         0      Not Applicable
  02/22/2026 06 PM PST           10.81           2129         -      Not Applicable
  02/22/2026 07 PM PST           10.74           2094         -      Not Applicable
  02/22/2026 08 PM PST           10.66           2053         -      Not Applicable
  02/22/2026 09 PM PST           10.56           2003         -      Not Applicable
  02/22/2026 10 PM PST           10.45           1949         -      Not Applicable
  02/22/2026 11 PM PST           10.34           1895         -      Not Applicable
  02/23/2026 12 AM PST           10.21           1831         -      Not Applicable
  02/23/2026 01 AM PST           10.10           1779         -      Not Applicable
  02/23/2026 02 AM PST            9.97           1717         -      Not Applicable
  02/23/2026 03 AM PST            9.86           1666         -      Not Applicable
  02/23/2026 04 AM PST            9.73           1606         -      Not Applicable
  02/23/2026 05 AM PST            9.61           1551         -      Not Applicable
  02/23/2026 06 AM PST            9.48           1493         -      Not Applicable
  02/23/2026 07 AM PST            9.39           1453         -      Not Applicable
  02/23/2026 08 AM PST            9.29           1409         -      Not Applicable
  02/23/2026 09 AM PST            9.20           1370         -      Not Applicable
  02/23/2026 10 AM PST            9.11           1332         -      Not Applicable
  02/23/2026 11 AM PST            9.03           1298         -      Not Applicable
  02/23/2026 12 PM PST            8.96           1267         -      Not Applicable
  02/23/2026 01 PM PST            8.91           1242         -      Not Applicable
  02/23/2026 02 PM PST            8.88           1227         -      Not Applicable
  02/23/2026 03 PM PST            8.87           1221         -      Not Applicable
  02/23/2026 04 PM PST            8.90           1237         +      Not Applicable
  02/23/2026 05 PM PST            8.95           1262         +      Not Applicable
  02/23/2026 06 PM PST            9.05           1306         +      Not Applicable
  02/23/2026 07 PM PST            9.20           1370         +      Not Applicable
  02/23/2026 08 PM PST            9.42           1466         +      Not Applicable
  02/23/2026 09 PM PST            9.81           1643         +      Not Applicable
  02/23/2026 10 PM PST           10.37           1909         +      Not Applicable
  02/23/2026 11 PM PST           11.04           2248         +      Not Applicable
  02/24/2026 12 AM PST           13.19           3476         +      Not Applicable
  02/24/2026 01 AM PST           13.82           3874         +      Not Applicable
  02/24/2026 02 AM PST           14.38           4241         +      Not Applicable
  02/24/2026 03 AM PST           14.76           4498         +      Not Applicable
  02/24/2026 04 AM PST           15.17           4781         +      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.