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RUSSIAN RIVER - HACIENDA BRIDGE (RIOC1)
| Latitude: 38.51º N | Longitude: 122.93º W | Elevation: 20 Feet | | | |
| Location: Sonoma County in California | Bulletin Group: Russian Napa | River Group: Russian Napa |
| Issuance Time: | Dec 26 2025 at 7:56 AM PST | Next Issuance: | Dec 26 2025 at 3:00 PM PST
| |
| Action/Monitor: 31.0 Feet | Minor Flood: 34.0 Feet | Moderate 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 07:57 AM 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 08:00 AM PST
# Maximum Forecast Stage: 23.73 Feet
# Maximum Forecast Flow: 17956 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
12/21/2025 07 AM PST 7.19 1893 Normal
12/21/2025 08 AM PST 7.28 1938 + Normal
12/21/2025 09 AM PST 7.42 2009 + Normal
12/21/2025 10 AM PST 7.63 2117 + Normal
12/21/2025 11 AM PST 7.88 2250 + Normal
12/21/2025 12 PM PST 8.12 2381 + Normal
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 23.74 17970 0 Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
12/26/2025 08 AM PST 23.73 17956 Normal
12/26/2025 09 AM PST 23.71 17928 - Normal
12/26/2025 10 AM PST 23.68 17885 - Normal
12/26/2025 11 AM PST 23.64 17828 - Normal
12/26/2025 12 PM PST 23.60 17771 - Normal
12/26/2025 01 PM PST 23.54 17686 - Normal
12/26/2025 02 PM PST 23.48 17601 - Normal
12/26/2025 03 PM PST 23.41 17503 - Normal
12/26/2025 04 PM PST 23.34 17404 - Normal
12/26/2025 05 PM PST 23.26 17292 - Normal
12/26/2025 06 PM PST 23.19 17194 - Normal
12/26/2025 07 PM PST 23.12 17096 - Normal
12/26/2025 08 PM PST 23.05 16999 - Normal
12/26/2025 09 PM PST 22.98 16902 - Normal
12/26/2025 10 PM PST 22.91 16805 - Normal
12/26/2025 11 PM PST 22.85 16722 - Normal
12/27/2025 12 AM PST 22.79 16640 - Normal
12/27/2025 01 AM PST 22.74 16571 - Normal
12/27/2025 02 AM PST 22.70 16516 - Normal
12/27/2025 03 AM PST 22.65 16448 - Normal
12/27/2025 04 AM PST 22.60 16379 - Normal
12/27/2025 05 AM PST 22.55 16311 - Normal
12/27/2025 06 AM PST 22.48 16216 - Normal
12/27/2025 07 AM PST 22.41 16121 - Normal
12/27/2025 08 AM PST 22.32 15999 - Normal
12/27/2025 09 AM PST 22.23 15878 - Normal
12/27/2025 10 AM PST 22.12 15730 - Normal
12/27/2025 11 AM PST 22.01 15583 - Normal
12/27/2025 12 PM PST 21.89 15423 - Normal
12/27/2025 01 PM PST 21.75 15238 - Normal
12/27/2025 02 PM PST 21.60 15040 - Normal
12/27/2025 03 PM PST 21.45 14844 - Normal
12/27/2025 04 PM PST 21.29 14636 - Normal
12/27/2025 05 PM PST 21.12 14417 - Normal
12/27/2025 06 PM PST 20.93 14174 - Normal
12/27/2025 07 PM PST 20.74 13932 - Normal
12/27/2025 08 PM PST 20.53 13668 - Normal
12/27/2025 09 PM PST 20.32 13405 - Normal
12/27/2025 10 PM PST 20.10 13133 - Normal
12/27/2025 11 PM PST 19.87 12851 - Normal
12/28/2025 12 AM PST 19.64 12573 - Normal
12/28/2025 01 AM PST 19.41 12297 - Normal
12/28/2025 02 AM PST 19.17 12012 - Normal
12/28/2025 03 AM PST 18.92 11718 - Normal
12/28/2025 04 AM PST 18.67 11428 - Normal
12/28/2025 05 AM PST 18.43 11153 - Normal
12/28/2025 06 AM PST 18.18 10870 - Normal
12/28/2025 07 AM PST 17.95 10612 - Normal
12/28/2025 08 AM PST 17.71 10346 - Normal
12/28/2025 09 AM PST 17.47 10084 - Normal
12/28/2025 10 AM PST 17.22 9814 - Normal
12/28/2025 11 AM PST 16.98 9558 - Normal
12/28/2025 12 PM PST 16.74 9305 - Normal
12/28/2025 01 PM PST 16.51 9065 - Normal
12/28/2025 02 PM PST 16.29 8839 - Normal
12/28/2025 03 PM PST 16.08 8626 - Normal
12/28/2025 04 PM PST 15.87 8415 - Normal
12/28/2025 05 PM PST 15.67 8216 - Normal
12/28/2025 06 PM PST 15.47 8019 - Normal
12/28/2025 07 PM PST 15.27 7825 - Normal
12/28/2025 08 PM PST 15.05 7614 - Normal
12/28/2025 09 PM PST 14.85 7425 - Normal
12/28/2025 10 PM PST 14.66 7247 - Normal
12/28/2025 11 PM PST 14.48 7080 - Normal
12/29/2025 12 AM PST 14.30 6915 - Normal
12/29/2025 01 AM PST 14.13 6761 - Normal
12/29/2025 02 AM PST 13.97 6617 - Normal
12/29/2025 03 AM PST 13.82 6484 - Normal
12/29/2025 04 AM PST 13.67 6352 - Normal
12/29/2025 05 AM PST 13.52 6222 - Normal
12/29/2025 06 AM PST 13.38 6101 - Normal
12/29/2025 07 AM PST 13.25 5990 - Normal
12/29/2025 08 AM PST 13.12 5879 - Normal
12/29/2025 09 AM PST 12.99 5770 - Normal
12/29/2025 10 AM PST 12.87 5670 - Normal
12/29/2025 11 AM PST 12.76 5579 - Normal
12/29/2025 12 PM PST 12.64 5481 - Normal
12/29/2025 01 PM PST 12.52 5383 - Normal
12/29/2025 02 PM PST 12.40 5286 - Normal
12/29/2025 03 PM PST 12.29 5198 - 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 11.89 4884 - Normal
12/29/2025 08 PM PST 11.81 4822 - Normal
12/29/2025 09 PM PST 11.72 4753 - Normal
12/29/2025 10 PM PST 11.64 4692 - Normal
12/29/2025 11 PM PST 11.56 4632 - Normal
12/30/2025 12 AM PST 11.49 4579 - Normal
12/30/2025 01 AM PST 11.41 4519 - Normal
12/30/2025 02 AM PST 11.34 4467 - Normal
12/30/2025 03 AM PST 11.28 4423 - Normal
12/30/2025 04 AM PST 11.21 4371 - Normal
12/30/2025 05 AM PST 11.14 4320 - Normal
12/30/2025 06 AM PST 11.08 4276 - Normal
12/30/2025 07 AM PST 11.02 4233 - Normal
12/30/2025 08 AM PST 10.96 4189 - Normal
12/30/2025 09 AM PST 10.90 4146 - Normal
12/30/2025 10 AM PST 10.84 4103 - Normal
12/30/2025 11 AM PST 10.79 4068 - Normal
12/30/2025 12 PM PST 10.73 4025 - Normal
12/30/2025 01 PM PST 10.68 3990 - Normal
12/30/2025 02 PM PST 10.63 3955 - Normal
12/30/2025 03 PM PST 10.58 3920 - Normal
12/30/2025 04 PM PST 10.53 3885 - Normal
12/30/2025 05 PM PST 10.48 3850 - Normal
12/30/2025 06 PM PST 10.43 3816 - Normal
12/30/2025 07 PM PST 10.38 3781 - Normal
12/30/2025 08 PM PST 10.34 3754 - Normal
12/30/2025 09 PM PST 10.29 3720 - Normal
12/30/2025 10 PM PST 10.24 3686 - Normal
12/30/2025 11 PM PST 10.20 3659 - Normal
12/31/2025 12 AM PST 10.15 3625 - Normal
12/31/2025 01 AM PST 10.11 3598 - Normal
12/31/2025 02 AM PST 10.07 3571 - Normal
12/31/2025 03 AM PST 10.03 3545 - Normal
12/31/2025 04 AM PST 9.98 3511 - 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.
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