RUSSIAN RIVER - HACIENDA BRIDGE (RIOC1)
Latitude: 38.51º NLongitude: 122.93º WElevation: 20 Feet
Location: Sonoma County in CaliforniaBulletin Group: Russian NapaRiver Group: Russian Napa
Issuance Time: Feb 07 2026 at 9:09 AM PSTNext Issuance: Feb 08 2026 at 9:00 AM PST
Action/Monitor: 31.0 FeetMinor Flood: 34.0 FeetModerate Flood: N/A Major Flood: N/A

# Tabular Observed and Forecast Hydrograph Information
#
# Location: Russian River - Hacienda Bridge (RIOC1)
#
# File Generation Time:  02/07/2026 at 09:11 AM PST
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  02/02/2026 at 09:00 AM PST
# Maximum Observed Stage:                       4.92 Feet
# Maximum Observed Flow:                        926 cfs
#
# Earliest Date & Time of Maximum Forecast:     02/07/2026 at 10:00 AM PST
# Maximum Forecast Stage:                       4.35 Feet
# Maximum Forecast Flow:                        735 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  02/02/2026 09 AM PST            4.92            926                        Normal
  02/02/2026 10 AM PST            4.91            923         -              Normal
  02/02/2026 11 AM PST            4.91            923         0              Normal
  02/02/2026 12 PM PST            4.90            919         -              Normal
  02/02/2026 01 PM PST            4.90            919         0              Normal
  02/02/2026 02 PM PST            4.89            916         -              Normal
  02/02/2026 03 PM PST            4.88            912         -              Normal
  02/02/2026 04 PM PST            4.88            912         0              Normal
  02/02/2026 05 PM PST            4.89            916         +              Normal
  02/02/2026 06 PM PST            4.87            909         -              Normal
  02/02/2026 07 PM PST            4.88            912         +              Normal
  02/02/2026 08 PM PST            4.86            905         -              Normal
  02/02/2026 09 PM PST            4.86            905         0              Normal
  02/02/2026 10 PM PST            4.85            902         -              Normal
  02/02/2026 11 PM PST            4.84            898         -              Normal
  02/03/2026 12 AM PST            4.83            895         -              Normal
  02/03/2026 01 AM PST            4.81            888         -              Normal
  02/03/2026 02 AM PST            4.81            888         0              Normal
  02/03/2026 03 AM PST            4.81            888         0              Normal
  02/03/2026 04 AM PST            4.79            881         -              Normal
  02/03/2026 05 AM PST            4.79            881         0              Normal
  02/03/2026 06 AM PST            4.78            877         -              Normal
  02/03/2026 07 AM PST            4.76            870         -              Normal
  02/03/2026 08 AM PST            4.77            874         +              Normal
  02/03/2026 09 AM PST            4.75            867         -              Normal
  02/03/2026 10 AM PST            4.74            864         -              Normal
  02/03/2026 11 AM PST            4.74            864         0              Normal
  02/03/2026 12 PM PST            4.73            860         -              Normal
  02/03/2026 01 PM PST            4.72            857         -              Normal
  02/03/2026 02 PM PST            4.72            857         0              Normal
  02/03/2026 03 PM PST            4.71            853         -              Normal
  02/03/2026 04 PM PST            4.71            853         0              Normal
  02/03/2026 05 PM PST            4.70            850         -              Normal
  02/03/2026 06 PM PST            4.71            853         +              Normal
  02/03/2026 07 PM PST            4.70            850         -              Normal
  02/03/2026 08 PM PST            4.69            846         -              Normal
  02/03/2026 09 PM PST            4.69            846         0              Normal
  02/03/2026 10 PM PST            4.69            846         0              Normal
  02/03/2026 11 PM PST            4.69            846         0              Normal
  02/04/2026 12 AM PST            4.68            843         -              Normal
  02/04/2026 01 AM PST            4.68            843         0              Normal
  02/04/2026 02 AM PST            4.67            840         -              Normal
  02/04/2026 03 AM PST            4.66            836         -              Normal
  02/04/2026 04 AM PST            4.66            836         0              Normal
  02/04/2026 05 AM PST            4.65            833         -              Normal
  02/04/2026 06 AM PST            4.64            830         -              Normal
  02/04/2026 07 AM PST            4.64            830         0              Normal
  02/04/2026 08 AM PST            4.63            826         -              Normal
  02/04/2026 09 AM PST            4.63            826         0              Normal
  02/04/2026 10 AM PST            4.62            823         -              Normal
  02/04/2026 11 AM PST            4.62            823         0              Normal
  02/04/2026 12 PM PST            4.61            819         -              Normal
  02/04/2026 01 PM PST            4.62            823         +              Normal
  02/04/2026 02 PM PST            4.61            819         -              Normal
  02/04/2026 03 PM PST            4.60            816         -              Normal
  02/04/2026 04 PM PST            4.60            816         0              Normal
  02/04/2026 05 PM PST            4.59            813         -              Normal
  02/04/2026 06 PM PST            4.59            813         0              Normal
  02/04/2026 07 PM PST            4.59            813         0              Normal
  02/04/2026 08 PM PST            4.59            813         0              Normal
  02/04/2026 09 PM PST            4.58            809         -              Normal
  02/04/2026 10 PM PST            4.58            809         0              Normal
  02/04/2026 11 PM PST            4.58            809         0              Normal
  02/05/2026 12 AM PST            4.57            806         -              Normal
  02/05/2026 01 AM PST            4.57            806         0              Normal
  02/05/2026 02 AM PST            4.56            803         -              Normal
  02/05/2026 03 AM PST            4.57            806         +              Normal
  02/05/2026 04 AM PST            4.57            806         0              Normal
  02/05/2026 05 AM PST            4.56            803         -              Normal
  02/05/2026 06 AM PST            4.55            799         -              Normal
  02/05/2026 07 AM PST            4.55            799         0              Normal
  02/05/2026 08 AM PST            4.54            796         -              Normal
  02/05/2026 09 AM PST            4.54            796         0              Normal
  02/05/2026 10 AM PST            4.53            793         -              Normal
  02/05/2026 11 AM PST            4.53            793         0              Normal
  02/05/2026 12 PM PST            4.53            793         0              Normal
  02/05/2026 01 PM PST            4.52            790         -              Normal
  02/05/2026 02 PM PST            4.51            786         -              Normal
  02/05/2026 03 PM PST            4.52            790         +              Normal
  02/05/2026 04 PM PST            4.50            783         -              Normal
  02/05/2026 05 PM PST            4.50            783         0              Normal
  02/05/2026 06 PM PST            4.51            786         +              Normal
  02/05/2026 07 PM PST            4.49            780         -              Normal
  02/05/2026 08 PM PST            4.51            786         +              Normal
  02/05/2026 09 PM PST            4.50            783         -              Normal
  02/05/2026 10 PM PST            4.49            780         -              Normal
  02/05/2026 11 PM PST            4.49            780         0              Normal
  02/06/2026 12 AM PST            4.49            780         0              Normal
  02/06/2026 01 AM PST            4.48            776         -              Normal
  02/06/2026 02 AM PST            4.48            776         0              Normal
  02/06/2026 03 AM PST            4.48            776         0              Normal
  02/06/2026 04 AM PST            4.48            776         0              Normal
  02/06/2026 05 AM PST            4.48            776         0              Normal
  02/06/2026 06 AM PST            4.47            773         -              Normal
  02/06/2026 07 AM PST            4.46            770         -              Normal
  02/06/2026 08 AM PST            4.47            773         +              Normal
  02/06/2026 09 AM PST            4.46            770         -              Normal
  02/06/2026 10 AM PST            4.45            767         -              Normal
  02/06/2026 11 AM PST            4.45            767         0              Normal
  02/06/2026 12 PM PST            4.45            767         0              Normal
  02/06/2026 01 PM PST            4.44            763         -              Normal
  02/06/2026 02 PM PST            4.44            763         0              Normal
  02/06/2026 03 PM PST            4.43            760         -              Normal
  02/06/2026 04 PM PST            4.43            760         0              Normal
  02/06/2026 05 PM PST            4.43            760         0              Normal
  02/06/2026 06 PM PST            4.43            760         0              Normal
  02/06/2026 07 PM PST            4.43            760         0              Normal
  02/06/2026 08 PM PST            4.43            760         0              Normal
  02/06/2026 09 PM PST            4.42            757         -              Normal
  02/06/2026 10 PM PST            4.41            754         -              Normal
  02/06/2026 11 PM PST            4.41            754         0              Normal
  02/07/2026 12 AM PST            4.40            751         -              Normal
  02/07/2026 01 AM PST            4.40            751         0              Normal
  02/07/2026 02 AM PST            4.40            751         0              Normal
  02/07/2026 03 AM PST            4.40            751         0              Normal
  02/07/2026 04 AM PST            4.39            747         -              Normal
  02/07/2026 05 AM PST            4.38            744         -              Normal
  02/07/2026 06 AM PST            4.37            741         -              Normal
  02/07/2026 07 AM PST            4.37            741         0              Normal
  02/07/2026 08 AM PST            4.37            741         0              Normal
  02/07/2026 09 AM PST            4.36            738         -              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  02/07/2026 10 AM PST            4.35            735                        Normal
  02/07/2026 11 AM PST            4.35            735         0              Normal
  02/07/2026 12 PM PST            4.34            731         -              Normal
  02/07/2026 01 PM PST            4.33            728         -              Normal
  02/07/2026 02 PM PST            4.33            728         0              Normal
  02/07/2026 03 PM PST            4.32            725         -              Normal
  02/07/2026 04 PM PST            4.32            725         0              Normal
  02/07/2026 05 PM PST            4.31            722         -              Normal
  02/07/2026 06 PM PST            4.31            722         0              Normal
  02/07/2026 07 PM PST            4.31            722         0              Normal
  02/07/2026 08 PM PST            4.30            719         -              Normal
  02/07/2026 09 PM PST            4.30            719         0              Normal
  02/07/2026 10 PM PST            4.29            716         -              Normal
  02/07/2026 11 PM PST            4.29            716         0              Normal
  02/08/2026 12 AM PST            4.29            716         0              Normal
  02/08/2026 01 AM PST            4.29            716         0              Normal
  02/08/2026 02 AM PST            4.28            712         -              Normal
  02/08/2026 03 AM PST            4.28            712         0              Normal
  02/08/2026 04 AM PST            4.28            712         0              Normal
  02/08/2026 05 AM PST            4.27            709         -              Normal
  02/08/2026 06 AM PST            4.27            709         0              Normal
  02/08/2026 07 AM PST            4.27            709         0              Normal
  02/08/2026 08 AM PST            4.26            706         -              Normal
  02/08/2026 09 AM PST            4.26            706         0              Normal
  02/08/2026 10 AM PST            4.26            706         0              Normal
  02/08/2026 11 AM PST            4.26            706         0              Normal
  02/08/2026 12 PM PST            4.25            703         -              Normal
  02/08/2026 01 PM PST            4.25            703         0              Normal
  02/08/2026 02 PM PST            4.25            703         0              Normal
  02/08/2026 03 PM PST            4.25            703         0              Normal
  02/08/2026 04 PM PST            4.25            703         0              Normal
  02/08/2026 05 PM PST            4.24            700         -              Normal
  02/08/2026 06 PM PST            4.24            700         0              Normal
  02/08/2026 07 PM PST            4.24            700         0              Normal
  02/08/2026 08 PM PST            4.24            700         0              Normal
  02/08/2026 09 PM PST            4.24            700         0              Normal
  02/08/2026 10 PM PST            4.24            700         0              Normal
  02/08/2026 11 PM PST            4.23            697         -              Normal
  02/09/2026 12 AM PST            4.23            697         0              Normal
  02/09/2026 01 AM PST            4.23            697         0              Normal
  02/09/2026 02 AM PST            4.23            697         0              Normal
  02/09/2026 03 AM PST            4.23            697         0              Normal
  02/09/2026 04 AM PST            4.22            694         -              Normal
  02/09/2026 05 AM PST            4.22            694         0              Normal
  02/09/2026 06 AM PST            4.22            694         0              Normal
  02/09/2026 07 AM PST            4.22            694         0              Normal
  02/09/2026 08 AM PST            4.22            694         0              Normal
  02/09/2026 09 AM PST            4.22            694         0              Normal
  02/09/2026 10 AM PST            4.22            694         0              Normal
  02/09/2026 11 AM PST            4.21            691         -              Normal
  02/09/2026 12 PM PST            4.21            691         0              Normal
  02/09/2026 01 PM PST            4.21            691         0              Normal
  02/09/2026 02 PM PST            4.21            691         0              Normal
  02/09/2026 03 PM PST            4.21            691         0              Normal
  02/09/2026 04 PM PST            4.21            691         0              Normal
  02/09/2026 05 PM PST            4.21            691         0              Normal
  02/09/2026 06 PM PST            4.21            691         0              Normal
  02/09/2026 07 PM PST            4.21            691         0              Normal
  02/09/2026 08 PM PST            4.20            688         -              Normal
  02/09/2026 09 PM PST            4.20            688         0              Normal
  02/09/2026 10 PM PST            4.20            688         0              Normal
  02/09/2026 11 PM PST            4.20            688         0              Normal
  02/10/2026 12 AM PST            4.20            688         0              Normal
  02/10/2026 01 AM PST            4.20            688         0              Normal
  02/10/2026 02 AM PST            4.20            688         0              Normal
  02/10/2026 03 AM PST            4.20            688         0              Normal
  02/10/2026 04 AM PST            4.20            688         0              Normal
  02/10/2026 05 AM PST            4.19            684         -              Normal
  02/10/2026 06 AM PST            4.19            684         0              Normal
  02/10/2026 07 AM PST            4.19            684         0              Normal
  02/10/2026 08 AM PST            4.19            684         0              Normal
  02/10/2026 09 AM PST            4.19            684         0              Normal
  02/10/2026 10 AM PST            4.19            684         0              Normal
  02/10/2026 11 AM PST            4.19            684         0              Normal
  02/10/2026 12 PM PST            4.19            684         0              Normal
  02/10/2026 01 PM PST            4.18            681         -              Normal
  02/10/2026 02 PM PST            4.18            681         0              Normal
  02/10/2026 03 PM PST            4.18            681         0              Normal
  02/10/2026 04 PM PST            4.18            681         0              Normal
  02/10/2026 05 PM PST            4.18            681         0              Normal
  02/10/2026 06 PM PST            4.18            681         0              Normal
  02/10/2026 07 PM PST            4.18            681         0              Normal
  02/10/2026 08 PM PST            4.18            681         0              Normal
  02/10/2026 09 PM PST            4.18            681         0              Normal
  02/10/2026 10 PM PST            4.18            681         0              Normal
  02/10/2026 11 PM PST            4.18            681         0              Normal
  02/11/2026 12 AM PST            4.18            681         0              Normal
  02/11/2026 01 AM PST            4.18            681         0              Normal
  02/11/2026 02 AM PST            4.18            681         0              Normal
  02/11/2026 03 AM PST            4.18            681         0              Normal
  02/11/2026 04 AM PST            4.18            681         0              Normal
  02/11/2026 05 AM PST            4.18            681         0              Normal
  02/11/2026 06 AM PST            4.18            681         0              Normal
  02/11/2026 07 AM PST            4.18            681         0              Normal
  02/11/2026 08 AM PST            4.19            684         +              Normal
  02/11/2026 09 AM PST            4.19            684         0              Normal
  02/11/2026 10 AM PST            4.19            684         0              Normal
  02/11/2026 11 AM PST            4.19            684         0              Normal
  02/11/2026 12 PM PST            4.19            684         0              Normal
  02/11/2026 01 PM PST            4.19            684         0              Normal
  02/11/2026 02 PM PST            4.19            684         0              Normal
  02/11/2026 03 PM PST            4.19            684         0              Normal
  02/11/2026 04 PM PST            4.19            684         0              Normal
  02/11/2026 05 PM PST            4.19            684         0              Normal
  02/11/2026 06 PM PST            4.19            684         0              Normal
  02/11/2026 07 PM PST            4.19            684         0              Normal
  02/11/2026 08 PM PST            4.19            684         0              Normal
  02/11/2026 09 PM PST            4.19            684         0              Normal
  02/11/2026 10 PM PST            4.19            684         0              Normal
  02/11/2026 11 PM PST            4.19            684         0              Normal
  02/12/2026 12 AM PST            4.19            684         0              Normal
  02/12/2026 01 AM PST            4.18            681         -              Normal
  02/12/2026 02 AM PST            4.18            681         0              Normal
  02/12/2026 03 AM PST            4.18            681         0              Normal
  02/12/2026 04 AM PST            4.18            681         0              Normal
#
# 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.