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 FeetForecast Type: Unofficial Location
Location: Sonoma County in CaliforniaBulletin Group: Russian NapaRiver Group: Russian Napa
Issuance Time: May 04 2026 at 7:13 AM PDTNext Issuance: May 05 2026 at 9:00 AM PDT
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:  05/04/2026 at 07:14 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  04/29/2026 at 07:00 AM PDT
# Maximum Observed Stage:                       3.91 Feet
# Maximum Observed Flow:                        617 cfs
#
# Earliest Date & Time of Maximum Forecast:     05/05/2026 at 04:00 PM PDT
# Maximum Forecast Stage:                       3.28 Feet
# Maximum Forecast Flow:                        466 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  04/29/2026 07 AM PDT            3.91            617                        Normal
  04/29/2026 08 AM PDT            3.90            615         -              Normal
  04/29/2026 09 AM PDT            3.89            612         -              Normal
  04/29/2026 10 AM PDT            3.88            609         -              Normal
  04/29/2026 11 AM PDT            3.88            609         0              Normal
  04/29/2026 12 PM PDT            3.87            607         -              Normal
  04/29/2026 01 PM PDT            3.86            604         -              Normal
  04/29/2026 02 PM PDT            3.86            604         0              Normal
  04/29/2026 03 PM PDT            3.85            602         -              Normal
  04/29/2026 04 PM PDT            3.85            602         0              Normal
  04/29/2026 05 PM PDT            3.83            597         -              Normal
  04/29/2026 06 PM PDT            3.82            594         -              Normal
  04/29/2026 07 PM PDT            3.81            592         -              Normal
  04/29/2026 08 PM PDT            3.81            592         0              Normal
  04/29/2026 09 PM PDT            3.80            589         -              Normal
  04/29/2026 10 PM PDT            3.79            586         -              Normal
  04/29/2026 11 PM PDT            3.78            584         -              Normal
  04/30/2026 12 AM PDT            3.76            579         -              Normal
  04/30/2026 01 AM PDT            3.76            579         0              Normal
  04/30/2026 02 AM PDT            3.76            579         0              Normal
  04/30/2026 03 AM PDT            3.74            574         -              Normal
  04/30/2026 04 AM PDT            3.74            574         0              Normal
  04/30/2026 05 AM PDT            3.73            571         -              Normal
  04/30/2026 06 AM PDT            3.73            571         0              Normal
  04/30/2026 07 AM PDT            3.71            566         -              Normal
  04/30/2026 08 AM PDT            3.71            566         0              Normal
  04/30/2026 09 AM PDT            3.70            564         -              Normal
  04/30/2026 10 AM PDT            3.69            562         -              Normal
  04/30/2026 11 AM PDT            3.69            562         0              Normal
  04/30/2026 12 PM PDT            3.69            562         0              Normal
  04/30/2026 01 PM PDT            3.68            559         -              Normal
  04/30/2026 02 PM PDT            3.68            559         0              Normal
  04/30/2026 03 PM PDT            3.68            559         0              Normal
  04/30/2026 04 PM PDT            3.67            557         -              Normal
  04/30/2026 05 PM PDT            3.66            554         -              Normal
  04/30/2026 06 PM PDT            3.66            554         0              Normal
  04/30/2026 07 PM PDT            3.66            554         0              Normal
  04/30/2026 08 PM PDT            3.64            549         -              Normal
  04/30/2026 09 PM PDT            3.63            547         -              Normal
  04/30/2026 10 PM PDT            3.63            547         0              Normal
  04/30/2026 11 PM PDT            3.61            542         -              Normal
  05/01/2026 12 AM PDT            3.61            542         0              Normal
  05/01/2026 01 AM PDT            3.60            540         -              Normal
  05/01/2026 02 AM PDT            3.60            540         0              Normal
  05/01/2026 03 AM PDT            3.58            535         -              Normal
  05/01/2026 04 AM PDT            3.58            535         0              Normal
  05/01/2026 05 AM PDT            3.58            535         0              Normal
  05/01/2026 06 AM PDT            3.57            532         -              Normal
  05/01/2026 07 AM PDT            3.56            530         -              Normal
  05/01/2026 08 AM PDT            3.56            530         0              Normal
  05/01/2026 09 AM PDT            3.56            530         0              Normal
  05/01/2026 10 AM PDT            3.55            528         -              Normal
  05/01/2026 11 AM PDT            3.55            528         0              Normal
  05/01/2026 12 PM PDT            3.54            525         -              Normal
  05/01/2026 01 PM PDT            3.54            525         0              Normal
  05/01/2026 02 PM PDT            3.53            523         -              Normal
  05/01/2026 03 PM PDT            3.53            523         0              Normal
  05/01/2026 04 PM PDT            3.53            523         0              Normal
  05/01/2026 05 PM PDT            3.52            521         -              Normal
  05/01/2026 06 PM PDT            3.52            521         0              Normal
  05/01/2026 07 PM PDT            3.52            521         0              Normal
  05/01/2026 08 PM PDT            3.51            518         -              Normal
  05/01/2026 09 PM PDT            3.50            516         -              Normal
  05/01/2026 10 PM PDT            3.50            516         0              Normal
  05/01/2026 11 PM PDT            3.49            514         -              Normal
  05/02/2026 12 AM PDT            3.48            511         -              Normal
  05/02/2026 01 AM PDT            3.48            511         0              Normal
  05/02/2026 02 AM PDT            3.47            509         -              Normal
  05/02/2026 03 AM PDT            3.46            507         -              Normal
  05/02/2026 04 AM PDT            3.46            507         0              Normal
  05/02/2026 05 AM PDT            3.45            504         -              Normal
  05/02/2026 06 AM PDT            3.45            504         0              Normal
  05/02/2026 07 AM PDT            3.45            504         0              Normal
  05/02/2026 08 AM PDT            3.45            504         0              Normal
  05/02/2026 09 AM PDT            3.44            502         -              Normal
  05/02/2026 10 AM PDT            3.44            502         0              Normal
  05/02/2026 11 AM PDT            3.44            502         0              Normal
  05/02/2026 12 PM PDT            3.44            502         0              Normal
  05/02/2026 01 PM PDT            3.44            502         0              Normal
  05/02/2026 02 PM PDT            3.42            497         -              Normal
  05/02/2026 03 PM PDT            3.42            497         0              Normal
  05/02/2026 04 PM PDT            3.42            497         0              Normal
  05/02/2026 05 PM PDT            3.42            497         0              Normal
  05/02/2026 06 PM PDT            3.41            495         -              Normal
  05/02/2026 07 PM PDT            3.41            495         0              Normal
  05/02/2026 08 PM PDT            3.41            495         0              Normal
  05/02/2026 09 PM PDT            3.40            493         -              Normal
  05/02/2026 10 PM PDT            3.40            493         0              Normal
  05/02/2026 11 PM PDT            3.40            493         0              Normal
  05/03/2026 12 AM PDT            3.39            491         -              Normal
  05/03/2026 01 AM PDT            3.39            491         0              Normal
  05/03/2026 02 AM PDT            3.38            488         -              Normal
  05/03/2026 03 AM PDT            3.38            488         0              Normal
  05/03/2026 04 AM PDT            3.38            488         0              Normal
  05/03/2026 05 AM PDT            3.38            488         0              Normal
  05/03/2026 06 AM PDT            3.37            486         -              Normal
  05/03/2026 07 AM PDT            3.37            486         0              Normal
  05/03/2026 08 AM PDT            3.36            484         -              Normal
  05/03/2026 09 AM PDT            3.36            484         0              Normal
  05/03/2026 10 AM PDT            3.36            484         0              Normal
  05/03/2026 11 AM PDT            3.35            482         -              Normal
  05/03/2026 12 PM PDT            3.36            484         +              Normal
  05/03/2026 01 PM PDT            3.35            482         -              Normal
  05/03/2026 02 PM PDT            3.35            482         0              Normal
  05/03/2026 03 PM PDT            3.35            482         0              Normal
  05/03/2026 04 PM PDT            3.35            482         0              Normal
  05/03/2026 05 PM PDT            3.33            477         -              Normal
  05/03/2026 06 PM PDT            3.33            477         0              Normal
  05/03/2026 07 PM PDT            3.33            477         0              Normal
  05/03/2026 08 PM PDT            3.33            477         0              Normal
  05/03/2026 09 PM PDT            3.32            475         -              Normal
  05/03/2026 10 PM PDT            3.32            475         0              Normal
  05/03/2026 11 PM PDT            3.31            473         -              Normal
  05/04/2026 12 AM PDT            3.30            470         -              Normal
  05/04/2026 01 AM PDT            3.31            473         +              Normal
  05/04/2026 02 AM PDT            3.30            470         -              Normal
  05/04/2026 03 AM PDT            3.29            468         -              Normal
  05/04/2026 04 AM PDT            3.29            468         0              Normal
  05/04/2026 05 AM PDT            3.28            466         -              Normal
  05/04/2026 06 AM PDT            3.27            464         -              Normal
  05/04/2026 07 AM PDT            3.27            464         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  05/04/2026 08 AM PDT            3.27            464                        Normal
  05/04/2026 09 AM PDT            3.26            462         -              Normal
  05/04/2026 10 AM PDT            3.26            462         0              Normal
  05/04/2026 11 AM PDT            3.25            459         -              Normal
  05/04/2026 12 PM PDT            3.25            459         0              Normal
  05/04/2026 01 PM PDT            3.25            459         0              Normal
  05/04/2026 02 PM PDT            3.24            457         -              Normal
  05/04/2026 03 PM PDT            3.24            457         0              Normal
  05/04/2026 04 PM PDT            3.24            457         0              Normal
  05/04/2026 05 PM PDT            3.23            455         -              Normal
  05/04/2026 06 PM PDT            3.22            453         -              Normal
  05/04/2026 07 PM PDT            3.22            453         0              Normal
  05/04/2026 08 PM PDT            3.22            453         0              Normal
  05/04/2026 09 PM PDT            3.21            451         -              Normal
  05/04/2026 10 PM PDT            3.21            451         0              Normal
  05/04/2026 11 PM PDT            3.21            451         0              Normal
  05/05/2026 12 AM PDT            3.21            451         0              Normal
  05/05/2026 01 AM PDT            3.21            451         0              Normal
  05/05/2026 02 AM PDT            3.21            451         0              Normal
  05/05/2026 03 AM PDT            3.21            451         0              Normal
  05/05/2026 04 AM PDT            3.21            451         0              Normal
  05/05/2026 05 AM PDT            3.21            451         0              Normal
  05/05/2026 06 AM PDT            3.22            453         +              Normal
  05/05/2026 07 AM PDT            3.22            453         0              Normal
  05/05/2026 08 AM PDT            3.23            455         +              Normal
  05/05/2026 09 AM PDT            3.23            455         0              Normal
  05/05/2026 10 AM PDT            3.24            457         +              Normal
  05/05/2026 11 AM PDT            3.25            459         +              Normal
  05/05/2026 12 PM PDT            3.26            462         +              Normal
  05/05/2026 01 PM PDT            3.26            462         0              Normal
  05/05/2026 02 PM PDT            3.27            464         +              Normal
  05/05/2026 03 PM PDT            3.27            464         0              Normal
  05/05/2026 04 PM PDT            3.28            466         +              Normal
  05/05/2026 05 PM PDT            3.28            466         0              Normal
  05/05/2026 06 PM PDT            3.27            464         -              Normal
  05/05/2026 07 PM PDT            3.27            464         0              Normal
  05/05/2026 08 PM PDT            3.27            464         0              Normal
  05/05/2026 09 PM PDT            3.27            464         0              Normal
  05/05/2026 10 PM PDT            3.27            464         0              Normal
  05/05/2026 11 PM PDT            3.27            464         0              Normal
  05/06/2026 12 AM PDT            3.26            462         -              Normal
  05/06/2026 01 AM PDT            3.26            462         0              Normal
  05/06/2026 02 AM PDT            3.25            459         -              Normal
  05/06/2026 03 AM PDT            3.25            459         0              Normal
  05/06/2026 04 AM PDT            3.24            457         -              Normal
  05/06/2026 05 AM PDT            3.23            455         -              Normal
  05/06/2026 06 AM PDT            3.23            455         0              Normal
  05/06/2026 07 AM PDT            3.22            453         -              Normal
  05/06/2026 08 AM PDT            3.22            453         0              Normal
  05/06/2026 09 AM PDT            3.21            451         -              Normal
  05/06/2026 10 AM PDT            3.21            451         0              Normal
  05/06/2026 11 AM PDT            3.20            449         -              Normal
  05/06/2026 12 PM PDT            3.19            446         -              Normal
  05/06/2026 01 PM PDT            3.19            446         0              Normal
  05/06/2026 02 PM PDT            3.19            446         0              Normal
  05/06/2026 03 PM PDT            3.18            444         -              Normal
  05/06/2026 04 PM PDT            3.18            444         0              Normal
  05/06/2026 05 PM PDT            3.17            442         -              Normal
  05/06/2026 06 PM PDT            3.16            440         -              Normal
  05/06/2026 07 PM PDT            3.16            440         0              Normal
  05/06/2026 08 PM PDT            3.15            438         -              Normal
  05/06/2026 09 PM PDT            3.15            438         0              Normal
  05/06/2026 10 PM PDT            3.15            438         0              Normal
  05/06/2026 11 PM PDT            3.14            436         -              Normal
  05/07/2026 12 AM PDT            3.14            436         0              Normal
  05/07/2026 01 AM PDT            3.13            434         -              Normal
  05/07/2026 02 AM PDT            3.13            434         0              Normal
  05/07/2026 03 AM PDT            3.13            434         0              Normal
  05/07/2026 04 AM PDT            3.12            432         -              Normal
  05/07/2026 05 AM PDT            3.12            432         0              Normal
  05/07/2026 06 AM PDT            3.12            432         0              Normal
  05/07/2026 07 AM PDT            3.11            430         -              Normal
  05/07/2026 08 AM PDT            3.11            430         0              Normal
  05/07/2026 09 AM PDT            3.10            427         -              Normal
  05/07/2026 10 AM PDT            3.10            427         0              Normal
  05/07/2026 11 AM PDT            3.10            427         0              Normal
  05/07/2026 12 PM PDT            3.09            425         -              Normal
  05/07/2026 01 PM PDT            3.09            425         0              Normal
  05/07/2026 02 PM PDT            3.08            423         -              Normal
  05/07/2026 03 PM PDT            3.08            423         0              Normal
  05/07/2026 04 PM PDT            3.08            423         0              Normal
  05/07/2026 05 PM PDT            3.07            421         -              Normal
  05/07/2026 06 PM PDT            3.06            419         -              Normal
  05/07/2026 07 PM PDT            3.06            419         0              Normal
  05/07/2026 08 PM PDT            3.05            417         -              Normal
  05/07/2026 09 PM PDT            3.05            417         0              Normal
  05/07/2026 10 PM PDT            3.05            417         0              Normal
  05/07/2026 11 PM PDT            3.04            415         -              Normal
  05/08/2026 12 AM PDT            3.04            415         0              Normal
  05/08/2026 01 AM PDT            3.04            415         0              Normal
  05/08/2026 02 AM PDT            3.03            413         -              Normal
  05/08/2026 03 AM PDT            3.03            413         0              Normal
  05/08/2026 04 AM PDT            3.03            413         0              Normal
  05/08/2026 05 AM PDT            3.02            411         -              Normal
  05/08/2026 06 AM PDT            3.02            411         0              Normal
  05/08/2026 07 AM PDT            3.02            411         0              Normal
  05/08/2026 08 AM PDT            3.01            409         -              Normal
  05/08/2026 09 AM PDT            3.01            409         0              Normal
  05/08/2026 10 AM PDT            3.01            409         0              Normal
  05/08/2026 11 AM PDT            3.00            407         -              Normal
  05/08/2026 12 PM PDT            3.00            407         0              Normal
  05/08/2026 01 PM PDT            3.00            407         0              Normal
  05/08/2026 02 PM PDT            2.99            405         -              Normal
  05/08/2026 03 PM PDT            2.99            405         0              Normal
  05/08/2026 04 PM PDT            2.99            405         0              Normal
  05/08/2026 05 PM PDT            2.98            403         -              Normal
  05/08/2026 06 PM PDT            2.97            401         -              Normal
  05/08/2026 07 PM PDT            2.97            401         0              Normal
  05/08/2026 08 PM PDT            2.97            401         0              Normal
  05/08/2026 09 PM PDT            2.96            399         -              Normal
  05/08/2026 10 PM PDT            2.96            399         0              Normal
  05/08/2026 11 PM PDT            2.96            399         0              Normal
  05/09/2026 12 AM PDT            2.96            399         0              Normal
  05/09/2026 01 AM PDT            2.95            397         -              Normal
  05/09/2026 02 AM PDT            2.95            397         0              Normal
  05/09/2026 03 AM PDT            2.95            397         0              Normal
  05/09/2026 04 AM PDT            2.94            395         -              Normal
  05/09/2026 05 AM PDT            2.94            395         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.