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: Dec 26 2025 at 1:28 PM PSTNext Issuance: Dec 27 2025 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:  12/26/2025 at 01:29 PM PST
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  12/22/2025 at 08:00 PM PST
# Maximum Observed Stage:                       24.53 Feet
# Maximum Observed Flow:                        19114 cfs
#
# Earliest Date & Time of Maximum Forecast:     12/26/2025 at 02:00 PM PST
# Maximum Forecast Stage:                       23.66 Feet
# Maximum Forecast Flow:                        17857 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  12/21/2025 01 PM PST            8.33           2498                        Normal
  12/21/2025 02 PM PST            8.51           2601         +              Normal
  12/21/2025 03 PM PST            8.72           2723         +              Normal
  12/21/2025 04 PM PST            8.97           2872         +              Normal
  12/21/2025 05 PM PST            9.35           3106         +              Normal
  12/21/2025 06 PM PST            9.81           3400         +              Normal
  12/21/2025 07 PM PST           10.36           3768         +              Normal
  12/21/2025 08 PM PST           11.03           4240         +              Normal
  12/21/2025 09 PM PST           11.72           4753         +              Normal
  12/21/2025 10 PM PST           12.39           5278         +              Normal
  12/21/2025 11 PM PST           13.02           5795         +              Normal
  12/22/2025 12 AM PST           13.75           6422         +              Normal
  12/22/2025 01 AM PST           14.61           7200         +              Normal
  12/22/2025 02 AM PST           15.52           8068         +              Normal
  12/22/2025 03 AM PST           16.44           8993         +              Normal
  12/22/2025 04 AM PST           17.22           9814         +              Normal
  12/22/2025 05 AM PST           17.91          10568         +              Normal
  12/22/2025 06 AM PST           18.64          11394         +              Normal
  12/22/2025 07 AM PST           19.37          12249         +              Normal
  12/22/2025 08 AM PST           20.24          13306         +              Normal
  12/22/2025 09 AM PST           21.03          14301         +              Normal
  12/22/2025 10 AM PST           21.81          15317         +              Normal
  12/22/2025 11 AM PST           22.44          16161         +              Normal
  12/22/2025 12 PM PST           22.97          16888         +              Normal
  12/22/2025 01 PM PST           23.35          17418         +              Normal
  12/22/2025 02 PM PST           23.79          18042         +              Normal
  12/22/2025 03 PM PST           24.05          18415         +              Normal
  12/22/2025 04 PM PST           24.26          18719         +              Normal
  12/22/2025 05 PM PST           24.41          18938         +              Normal
  12/22/2025 06 PM PST           24.45          18996         +              Normal
  12/22/2025 07 PM PST           24.53          19114         +              Normal
  12/22/2025 08 PM PST           24.53          19114         0              Normal
  12/22/2025 09 PM PST           24.47          19026         -              Normal
  12/22/2025 10 PM PST           24.38          18894         -              Normal
  12/22/2025 11 PM PST           24.21          18647         -              Normal
  12/23/2025 12 AM PST           24.16          18574         -              Normal
  12/23/2025 01 AM PST           24.03          18386         -              Normal
  12/23/2025 02 AM PST           23.87          18156         -              Normal
  12/23/2025 03 AM PST           23.65          17842         -              Normal
  12/23/2025 04 AM PST           23.51          17644         -              Normal
  12/23/2025 05 AM PST           23.18          17180         -              Normal
  12/23/2025 06 AM PST           22.99          16916         -              Normal
  12/23/2025 07 AM PST           22.70          16516         -              Normal
  12/23/2025 08 AM PST           22.47          16202         -              Normal
  12/23/2025 09 AM PST           22.21          15851         -              Normal
  12/23/2025 10 AM PST           21.85          15370         -              Normal
  12/23/2025 11 AM PST           21.58          15014         -              Normal
  12/23/2025 12 PM PST           21.18          14494         -              Normal
  12/23/2025 01 PM PST           20.88          14110         -              Normal
  12/23/2025 02 PM PST           20.48          13605         -              Normal
  12/23/2025 03 PM PST           20.10          13133         -              Normal
  12/23/2025 04 PM PST           19.77          12730         -              Normal
  12/23/2025 05 PM PST           19.42          12309         -              Normal
  12/23/2025 06 PM PST           19.00          11812         -              Normal
  12/23/2025 07 PM PST           18.65          11405         -              Normal
  12/23/2025 08 PM PST           18.35          11062         -              Normal
  12/23/2025 09 PM PST           18.10          10780         -              Normal
  12/23/2025 10 PM PST           17.81          10457         -              Normal
  12/23/2025 11 PM PST           17.57          10193         -              Normal
  12/24/2025 12 AM PST           17.33           9932         -              Normal
  12/24/2025 01 AM PST           17.18           9771         -              Normal
  12/24/2025 02 AM PST           17.02           9600         -              Normal
  12/24/2025 03 AM PST           16.91           9483         -              Normal
  12/24/2025 04 AM PST           16.84           9410         -              Normal
  12/24/2025 05 AM PST           16.80           9368         -              Normal
  12/24/2025 06 AM PST           16.81           9378         +              Normal
  12/24/2025 07 AM PST           16.83           9399         +              Normal
  12/24/2025 08 AM PST           16.84           9410         +              Normal
  12/24/2025 09 AM PST           16.95           9526         +              Normal
  12/24/2025 10 AM PST           17.07           9653         +              Normal
  12/24/2025 11 AM PST           17.22           9814         +              Normal
  12/24/2025 12 PM PST           17.39           9997         +              Normal
  12/24/2025 01 PM PST           17.59          10215         +              Normal
  12/24/2025 02 PM PST           17.85          10501         +              Normal
  12/24/2025 03 PM PST           18.08          10757         +              Normal
  12/24/2025 04 PM PST           18.33          11039         +              Normal
  12/24/2025 05 PM PST           18.58          11325         +              Normal
  12/24/2025 06 PM PST           18.96          11765         +              Normal
  12/24/2025 07 PM PST           19.35          12225         +              Normal
  12/24/2025 08 PM PST           19.71          12657         +              Normal
  12/24/2025 09 PM PST           20.10          13133         +              Normal
  12/24/2025 10 PM PST           20.54          13680         +              Normal
  12/24/2025 11 PM PST           20.93          14174         +              Normal
  12/25/2025 12 AM PST           21.26          14598         +              Normal
  12/25/2025 01 AM PST           21.55          14975         +              Normal
  12/25/2025 02 AM PST           21.81          15317         +              Normal
  12/25/2025 03 AM PST           22.04          15623         +              Normal
  12/25/2025 04 AM PST           22.23          15878         +              Normal
  12/25/2025 05 AM PST           22.30          15972         +              Normal
  12/25/2025 06 AM PST           22.53          16284         +              Normal
  12/25/2025 07 AM PST           22.51          16257         -              Normal
  12/25/2025 08 AM PST           22.64          16434         +              Normal
  12/25/2025 09 AM PST           22.68          16489         +              Normal
  12/25/2025 10 AM PST           22.84          16708         +              Normal
  12/25/2025 11 AM PST           22.88          16764         +              Normal
  12/25/2025 12 PM PST           22.98          16902         +              Normal
  12/25/2025 01 PM PST           23.05          16999         +              Normal
  12/25/2025 02 PM PST           23.11          17083         +              Normal
  12/25/2025 03 PM PST           23.20          17208         +              Normal
  12/25/2025 04 PM PST           23.30          17348         +              Normal
  12/25/2025 05 PM PST           23.29          17334         -              Normal
  12/25/2025 06 PM PST           23.28          17320         -              Normal
  12/25/2025 07 PM PST           23.33          17390         +              Normal
  12/25/2025 08 PM PST           23.43          17531         +              Normal
  12/25/2025 09 PM PST           23.40          17489         -              Normal
  12/25/2025 10 PM PST           23.53          17672         +              Normal
  12/25/2025 11 PM PST           23.48          17601         -              Normal
  12/26/2025 12 AM PST           23.58          17743         +              Normal
  12/26/2025 01 AM PST           23.61          17786         +              Normal
  12/26/2025 02 AM PST           23.62          17800         +              Normal
  12/26/2025 03 AM PST           23.66          17857         +              Normal
  12/26/2025 04 AM PST           23.73          17956         +              Normal
  12/26/2025 05 AM PST           23.68          17885         -              Normal
  12/26/2025 06 AM PST           23.74          17970         +              Normal
  12/26/2025 07 AM PST           23.75          17985         +              Normal
  12/26/2025 08 AM PST           23.74          17970         -              Normal
  12/26/2025 09 AM PST           23.75          17985         +              Normal
  12/26/2025 10 AM PST           23.78          18028         +              Normal
  12/26/2025 11 AM PST           23.81          18070         +              Normal
  12/26/2025 12 PM PST           23.78          18028         -              Normal
  12/26/2025 01 PM PST           23.72          17942         -              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  12/26/2025 02 PM PST           23.66          17857                        Normal
  12/26/2025 03 PM PST           23.60          17771         -              Normal
  12/26/2025 04 PM PST           23.54          17686         -              Normal
  12/26/2025 05 PM PST           23.48          17601         -              Normal
  12/26/2025 06 PM PST           23.42          17517         -              Normal
  12/26/2025 07 PM PST           23.37          17446         -              Normal
  12/26/2025 08 PM PST           23.32          17376         -              Normal
  12/26/2025 09 PM PST           23.27          17306         -              Normal
  12/26/2025 10 PM PST           23.22          17236         -              Normal
  12/26/2025 11 PM PST           23.16          17152         -              Normal
  12/27/2025 12 AM PST           23.10          17069         -              Normal
  12/27/2025 01 AM PST           23.04          16985         -              Normal
  12/27/2025 02 AM PST           22.97          16888         -              Normal
  12/27/2025 03 AM PST           22.90          16791         -              Normal
  12/27/2025 04 AM PST           22.82          16681         -              Normal
  12/27/2025 05 AM PST           22.74          16571         -              Normal
  12/27/2025 06 AM PST           22.64          16434         -              Normal
  12/27/2025 07 AM PST           22.53          16284         -              Normal
  12/27/2025 08 AM PST           22.41          16121         -              Normal
  12/27/2025 09 AM PST           22.29          15958         -              Normal
  12/27/2025 10 AM PST           22.16          15784         -              Normal
  12/27/2025 11 AM PST           22.02          15596         -              Normal
  12/27/2025 12 PM PST           21.86          15383         -              Normal
  12/27/2025 01 PM PST           21.70          15172         -              Normal
  12/27/2025 02 PM PST           21.54          14962         -              Normal
  12/27/2025 03 PM PST           21.37          14740         -              Normal
  12/27/2025 04 PM PST           21.19          14507         -              Normal
  12/27/2025 05 PM PST           21.00          14263         -              Normal
  12/27/2025 06 PM PST           20.79          13995         -              Normal
  12/27/2025 07 PM PST           20.58          13730         -              Normal
  12/27/2025 08 PM PST           20.36          13455         -              Normal
  12/27/2025 09 PM PST           20.14          13182         -              Normal
  12/27/2025 10 PM PST           19.91          12900         -              Normal
  12/27/2025 11 PM PST           19.67          12609         -              Normal
  12/28/2025 12 AM PST           19.44          12333         -              Normal
  12/28/2025 01 AM PST           19.19          12035         -              Normal
  12/28/2025 02 AM PST           18.94          11742         -              Normal
  12/28/2025 03 AM PST           18.70          11463         -              Normal
  12/28/2025 04 AM PST           18.45          11176         -              Normal
  12/28/2025 05 AM PST           18.21          10904         -              Normal
  12/28/2025 06 AM PST           17.98          10646         -              Normal
  12/28/2025 07 AM PST           17.75          10390         -              Normal
  12/28/2025 08 AM PST           17.50          10116         -              Normal
  12/28/2025 09 AM PST           17.26           9857         -              Normal
  12/28/2025 10 AM PST           17.02           9600         -              Normal
  12/28/2025 11 AM PST           16.79           9357         -              Normal
  12/28/2025 12 PM PST           16.56           9117         -              Normal
  12/28/2025 01 PM PST           16.34           8890         -              Normal
  12/28/2025 02 PM PST           16.13           8676         -              Normal
  12/28/2025 03 PM PST           15.93           8475         -              Normal
  12/28/2025 04 PM PST           15.73           8275         -              Normal
  12/28/2025 05 PM PST           15.54           8088         -              Normal
  12/28/2025 06 PM PST           15.35           7903         -              Normal
  12/28/2025 07 PM PST           15.13           7691         -              Normal
  12/28/2025 08 PM PST           14.94           7510         -              Normal
  12/28/2025 09 PM PST           14.75           7331         -              Normal
  12/28/2025 10 PM PST           14.56           7154         -              Normal
  12/28/2025 11 PM PST           14.39           6997         -              Normal
  12/29/2025 12 AM PST           14.22           6842         -              Normal
  12/29/2025 01 AM PST           14.06           6698         -              Normal
  12/29/2025 02 AM PST           13.91           6564         -              Normal
  12/29/2025 03 AM PST           13.76           6431         -              Normal
  12/29/2025 04 AM PST           13.61           6300         -              Normal
  12/29/2025 05 AM PST           13.47           6178         -              Normal
  12/29/2025 06 AM PST           13.34           6066         -              Normal
  12/29/2025 07 AM PST           13.21           5955         -              Normal
  12/29/2025 08 AM PST           13.08           5846         -              Normal
  12/29/2025 09 AM PST           12.96           5745         -              Normal
  12/29/2025 10 AM PST           12.85           5653         -              Normal
  12/29/2025 11 AM PST           12.74           5563         -              Normal
  12/29/2025 12 PM PST           12.62           5464         -              Normal
  12/29/2025 01 PM PST           12.50           5367         -              Normal
  12/29/2025 02 PM PST           12.38           5270         -              Normal
  12/29/2025 03 PM PST           12.28           5190         -              Normal
  12/29/2025 04 PM PST           12.18           5111         -              Normal
  12/29/2025 05 PM PST           12.08           5032         -              Normal
  12/29/2025 06 PM PST           11.99           4962         -              Normal
  12/29/2025 07 PM PST           11.90           4892         -              Normal
  12/29/2025 08 PM PST           11.82           4830         -              Normal
  12/29/2025 09 PM PST           11.74           4769         -              Normal
  12/29/2025 10 PM PST           11.66           4708         -              Normal
  12/29/2025 11 PM PST           11.58           4647         -              Normal
  12/30/2025 12 AM PST           11.51           4594         -              Normal
  12/30/2025 01 AM PST           11.44           4542         -              Normal
  12/30/2025 02 AM PST           11.37           4489         -              Normal
  12/30/2025 03 AM PST           11.30           4437         -              Normal
  12/30/2025 04 AM PST           11.24           4393         -              Normal
  12/30/2025 05 AM PST           11.17           4342         -              Normal
  12/30/2025 06 AM PST           11.11           4298         -              Normal
  12/30/2025 07 AM PST           11.05           4254         -              Normal
  12/30/2025 08 AM PST           10.99           4211         -              Normal
  12/30/2025 09 AM PST           10.94           4175         -              Normal
  12/30/2025 10 AM PST           10.88           4132         -              Normal
  12/30/2025 11 AM PST           10.82           4089         -              Normal
  12/30/2025 12 PM PST           10.77           4053         -              Normal
  12/30/2025 01 PM PST           10.72           4018         -              Normal
  12/30/2025 02 PM PST           10.67           3983         -              Normal
  12/30/2025 03 PM PST           10.62           3948         -              Normal
  12/30/2025 04 PM PST           10.56           3906         -              Normal
  12/30/2025 05 PM PST           10.52           3878         -              Normal
  12/30/2025 06 PM PST           10.47           3843         -              Normal
  12/30/2025 07 PM PST           10.42           3809         -              Normal
  12/30/2025 08 PM PST           10.38           3781         -              Normal
  12/30/2025 09 PM PST           10.33           3747         -              Normal
  12/30/2025 10 PM PST           10.28           3713         -              Normal
  12/30/2025 11 PM PST           10.24           3686         -              Normal
  12/31/2025 12 AM PST           10.20           3659         -              Normal
  12/31/2025 01 AM PST           10.15           3625         -              Normal
  12/31/2025 02 AM PST           10.11           3598         -              Normal
  12/31/2025 03 AM PST           10.07           3571         -              Normal
  12/31/2025 04 AM PST           10.03           3545         -              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.