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

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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 04 2026 at 7:15 AM PSTNext Issuance: Feb 04 2026 at 3:00 PM 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:  02/04/2026 at 07:17 AM PST
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  01/30/2026 at 07:00 AM PST
# Maximum Observed Stage:                       5.28 Feet
# Maximum Observed Flow:                        1058 cfs
#
# Earliest Date & Time of Maximum Forecast:     02/04/2026 at 08:00 AM PST
# Maximum Forecast Stage:                       4.63 Feet
# Maximum Forecast Flow:                        826 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  01/30/2026 07 AM PST            5.28           1058                        Normal
  01/30/2026 08 AM PST            5.26           1051         -              Normal
  01/30/2026 09 AM PST            5.26           1051         0              Normal
  01/30/2026 10 AM PST            5.25           1047         -              Normal
  01/30/2026 11 AM PST            5.24           1043         -              Normal
  01/30/2026 12 PM PST            5.25           1047         +              Normal
  01/30/2026 01 PM PST            5.23           1039         -              Normal
  01/30/2026 02 PM PST            5.23           1039         0              Normal
  01/30/2026 03 PM PST            5.22           1036         -              Normal
  01/30/2026 04 PM PST            5.22           1036         0              Normal
  01/30/2026 05 PM PST            5.21           1032         -              Normal
  01/30/2026 06 PM PST            5.20           1028         -              Normal
  01/30/2026 07 PM PST            5.20           1028         0              Normal
  01/30/2026 08 PM PST            5.20           1028         0              Normal
  01/30/2026 09 PM PST            5.20           1028         0              Normal
  01/30/2026 10 PM PST            5.19           1024         -              Normal
  01/30/2026 11 PM PST            5.18           1021         -              Normal
  01/31/2026 12 AM PST            5.18           1021         0              Normal
  01/31/2026 01 AM PST            5.18           1021         0              Normal
  01/31/2026 02 AM PST            5.17           1017         -              Normal
  01/31/2026 03 AM PST            5.16           1013         -              Normal
  01/31/2026 04 AM PST            5.15           1010         -              Normal
  01/31/2026 05 AM PST            5.15           1010         0              Normal
  01/31/2026 06 AM PST            5.15           1010         0              Normal
  01/31/2026 07 AM PST            5.14           1006         -              Normal
  01/31/2026 08 AM PST            5.14           1006         0              Normal
  01/31/2026 09 AM PST            5.13           1002         -              Normal
  01/31/2026 10 AM PST            5.13           1002         0              Normal
  01/31/2026 11 AM PST            5.13           1002         0              Normal
  01/31/2026 12 PM PST            5.12            999         -              Normal
  01/31/2026 01 PM PST            5.12            999         0              Normal
  01/31/2026 02 PM PST            5.11            995         -              Normal
  01/31/2026 03 PM PST            5.12            999         +              Normal
  01/31/2026 04 PM PST            5.10            991         -              Normal
  01/31/2026 05 PM PST            5.10            991         0              Normal
  01/31/2026 06 PM PST            5.09            988         -              Normal
  01/31/2026 07 PM PST            5.09            988         0              Normal
  01/31/2026 08 PM PST            5.09            988         0              Normal
  01/31/2026 09 PM PST            5.08            984         -              Normal
  01/31/2026 10 PM PST            5.08            984         0              Normal
  01/31/2026 11 PM PST            5.06            977         -              Normal
  02/01/2026 12 AM PST            5.07            980         +              Normal
  02/01/2026 01 AM PST            5.06            977         -              Normal
  02/01/2026 02 AM PST            5.05            973         -              Normal
  02/01/2026 03 AM PST            5.05            973         0              Normal
  02/01/2026 04 AM PST            5.03            966         -              Normal
  02/01/2026 05 AM PST            5.05            973         +              Normal
  02/01/2026 06 AM PST            5.03            966         -              Normal
  02/01/2026 07 AM PST            5.04            969         +              Normal
  02/01/2026 08 AM PST            5.04            969         0              Normal
  02/01/2026 09 AM PST            5.03            966         -              Normal
  02/01/2026 10 AM PST            5.02            962         -              Normal
  02/01/2026 11 AM PST            5.01            959         -              Normal
  02/01/2026 12 PM PST            5.00            955         -              Normal
  02/01/2026 01 PM PST            5.00            955         0              Normal
  02/01/2026 02 PM PST            5.00            955         0              Normal
  02/01/2026 03 PM PST            4.99            951         -              Normal
  02/01/2026 04 PM PST            4.99            951         0              Normal
  02/01/2026 05 PM PST            4.99            951         0              Normal
  02/01/2026 06 PM PST            4.98            948         -              Normal
  02/01/2026 07 PM PST            4.98            948         0              Normal
  02/01/2026 08 PM PST            4.98            948         0              Normal
  02/01/2026 09 PM PST            4.97            944         -              Normal
  02/01/2026 10 PM PST            4.96            941         -              Normal
  02/01/2026 11 PM PST            4.97            944         +              Normal
  02/02/2026 12 AM PST            4.96            941         -              Normal
  02/02/2026 01 AM PST            4.96            941         0              Normal
  02/02/2026 02 AM PST            4.94            933         -              Normal
  02/02/2026 03 AM PST            4.94            933         0              Normal
  02/02/2026 04 AM PST            4.95            937         +              Normal
  02/02/2026 05 AM PST            4.94            933         -              Normal
  02/02/2026 06 AM PST            4.94            933         0              Normal
  02/02/2026 07 AM PST            4.92            926         -              Normal
  02/02/2026 08 AM PST            4.92            926         0              Normal
  02/02/2026 09 AM PST            4.92            926         0              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
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  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            4.61            819         0              Normal
  02/04/2026 02 PM PST            4.61            819         0              Normal
  02/04/2026 03 PM PST            4.61            819         0              Normal
  02/04/2026 04 PM PST            4.61            819         0              Normal
  02/04/2026 05 PM PST            4.60            816         -              Normal
  02/04/2026 06 PM PST            4.60            816         0              Normal
  02/04/2026 07 PM PST            4.60            816         0              Normal
  02/04/2026 08 PM PST            4.59            813         -              Normal
  02/04/2026 09 PM PST            4.59            813         0              Normal
  02/04/2026 10 PM PST            4.59            813         0              Normal
  02/04/2026 11 PM PST            4.59            813         0              Normal
  02/05/2026 12 AM PST            4.58            809         -              Normal
  02/05/2026 01 AM PST            4.58            809         0              Normal
  02/05/2026 02 AM PST            4.58            809         0              Normal
  02/05/2026 03 AM PST            4.58            809         0              Normal
  02/05/2026 04 AM PST            4.57            806         -              Normal
  02/05/2026 05 AM PST            4.57            806         0              Normal
  02/05/2026 06 AM PST            4.57            806         0              Normal
  02/05/2026 07 AM PST            4.57            806         0              Normal
  02/05/2026 08 AM PST            4.56            803         -              Normal
  02/05/2026 09 AM PST            4.56            803         0              Normal
  02/05/2026 10 AM PST            4.56            803         0              Normal
  02/05/2026 11 AM PST            4.56            803         0              Normal
  02/05/2026 12 PM PST            4.56            803         0              Normal
  02/05/2026 01 PM PST            4.55            799         -              Normal
  02/05/2026 02 PM PST            4.55            799         0              Normal
  02/05/2026 03 PM PST            4.55            799         0              Normal
  02/05/2026 04 PM PST            4.55            799         0              Normal
  02/05/2026 05 PM PST            4.55            799         0              Normal
  02/05/2026 06 PM PST            4.54            796         -              Normal
  02/05/2026 07 PM PST            4.54            796         0              Normal
  02/05/2026 08 PM PST            4.54            796         0              Normal
  02/05/2026 09 PM PST            4.54            796         0              Normal
  02/05/2026 10 PM PST            4.54            796         0              Normal
  02/05/2026 11 PM PST            4.54            796         0              Normal
  02/06/2026 12 AM PST            4.53            793         -              Normal
  02/06/2026 01 AM PST            4.53            793         0              Normal
  02/06/2026 02 AM PST            4.53            793         0              Normal
  02/06/2026 03 AM PST            4.53            793         0              Normal
  02/06/2026 04 AM PST            4.53            793         0              Normal
  02/06/2026 05 AM PST            4.52            790         -              Normal
  02/06/2026 06 AM PST            4.52            790         0              Normal
  02/06/2026 07 AM PST            4.52            790         0              Normal
  02/06/2026 08 AM PST            4.52            790         0              Normal
  02/06/2026 09 AM PST            4.51            786         -              Normal
  02/06/2026 10 AM PST            4.51            786         0              Normal
  02/06/2026 11 AM PST            4.51            786         0              Normal
  02/06/2026 12 PM PST            4.51            786         0              Normal
  02/06/2026 01 PM PST            4.51            786         0              Normal
  02/06/2026 02 PM PST            4.50            783         -              Normal
  02/06/2026 03 PM PST            4.50            783         0              Normal
  02/06/2026 04 PM PST            4.50            783         0              Normal
  02/06/2026 05 PM PST            4.50            783         0              Normal
  02/06/2026 06 PM PST            4.50            783         0              Normal
  02/06/2026 07 PM PST            4.50            783         0              Normal
  02/06/2026 08 PM PST            4.49            780         -              Normal
  02/06/2026 09 PM PST            4.49            780         0              Normal
  02/06/2026 10 PM PST            4.49            780         0              Normal
  02/06/2026 11 PM PST            4.49            780         0              Normal
  02/07/2026 12 AM PST            4.49            780         0              Normal
  02/07/2026 01 AM PST            4.49            780         0              Normal
  02/07/2026 02 AM PST            4.48            776         -              Normal
  02/07/2026 03 AM PST            4.48            776         0              Normal
  02/07/2026 04 AM PST            4.48            776         0              Normal
  02/07/2026 05 AM PST            4.48            776         0              Normal
  02/07/2026 06 AM PST            4.48            776         0              Normal
  02/07/2026 07 AM PST            4.47            773         -              Normal
  02/07/2026 08 AM PST            4.47            773         0              Normal
  02/07/2026 09 AM PST            4.47            773         0              Normal
  02/07/2026 10 AM PST            4.47            773         0              Normal
  02/07/2026 11 AM PST            4.47            773         0              Normal
  02/07/2026 12 PM PST            4.46            770         -              Normal
  02/07/2026 01 PM PST            4.46            770         0              Normal
  02/07/2026 02 PM PST            4.46            770         0              Normal
  02/07/2026 03 PM PST            4.46            770         0              Normal
  02/07/2026 04 PM PST            4.46            770         0              Normal
  02/07/2026 05 PM PST            4.46            770         0              Normal
  02/07/2026 06 PM PST            4.46            770         0              Normal
  02/07/2026 07 PM PST            4.45            767         -              Normal
  02/07/2026 08 PM PST            4.45            767         0              Normal
  02/07/2026 09 PM PST            4.45            767         0              Normal
  02/07/2026 10 PM PST            4.45            767         0              Normal
  02/07/2026 11 PM PST            4.45            767         0              Normal
  02/08/2026 12 AM PST            4.45            767         0              Normal
  02/08/2026 01 AM PST            4.44            763         -              Normal
  02/08/2026 02 AM PST            4.44            763         0              Normal
  02/08/2026 03 AM PST            4.44            763         0              Normal
  02/08/2026 04 AM PST            4.44            763         0              Normal
  02/08/2026 05 AM PST            4.44            763         0              Normal
  02/08/2026 06 AM PST            4.43            760         -              Normal
  02/08/2026 07 AM PST            4.43            760         0              Normal
  02/08/2026 08 AM PST            4.43            760         0              Normal
  02/08/2026 09 AM PST            4.43            760         0              Normal
  02/08/2026 10 AM PST            4.43            760         0              Normal
  02/08/2026 11 AM PST            4.43            760         0              Normal
  02/08/2026 12 PM PST            4.42            757         -              Normal
  02/08/2026 01 PM PST            4.42            757         0              Normal
  02/08/2026 02 PM PST            4.42            757         0              Normal
  02/08/2026 03 PM PST            4.42            757         0              Normal
  02/08/2026 04 PM PST            4.42            757         0              Normal
  02/08/2026 05 PM PST            4.42            757         0              Normal
  02/08/2026 06 PM PST            4.42            757         0              Normal
  02/08/2026 07 PM PST            4.41            754         -              Normal
  02/08/2026 08 PM PST            4.41            754         0              Normal
  02/08/2026 09 PM PST            4.41            754         0              Normal
  02/08/2026 10 PM PST            4.41            754         0              Normal
  02/08/2026 11 PM PST            4.41            754         0              Normal
  02/09/2026 12 AM PST            4.41            754         0              Normal
  02/09/2026 01 AM PST            4.40            751         -              Normal
  02/09/2026 02 AM PST            4.40            751         0              Normal
  02/09/2026 03 AM PST            4.40            751         0              Normal
  02/09/2026 04 AM PST            4.40            751         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.