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: Apr 20 2026 at 6:54 AM PDTNext Issuance: Apr 21 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:  04/20/2026 at 06:55 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  04/15/2026 at 06:00 AM PDT
# Maximum Observed Stage:                       5.50 Feet
# Maximum Observed Flow:                        1143 cfs
#
# Earliest Date & Time of Maximum Forecast:     04/22/2026 at 08:00 PM PDT
# Maximum Forecast Stage:                       7.31 Feet
# Maximum Forecast Flow:                        1953 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  04/15/2026 06 AM PDT            5.50           1143                        Normal
  04/15/2026 07 AM PDT            5.46           1127         -              Normal
  04/15/2026 08 AM PDT            5.44           1119         -              Normal
  04/15/2026 09 AM PDT            5.41           1108         -              Normal
  04/15/2026 10 AM PDT            5.39           1100         -              Normal
  04/15/2026 11 AM PDT            5.36           1089         -              Normal
  04/15/2026 12 PM PDT            5.33           1077         -              Normal
  04/15/2026 01 PM PDT            5.31           1070         -              Normal
  04/15/2026 02 PM PDT            5.29           1062         -              Normal
  04/15/2026 03 PM PDT            5.26           1051         -              Normal
  04/15/2026 04 PM PDT            5.23           1039         -              Normal
  04/15/2026 05 PM PDT            5.21           1032         -              Normal
  04/15/2026 06 PM PDT            5.18           1021         -              Normal
  04/15/2026 07 PM PDT            5.15           1010         -              Normal
  04/15/2026 08 PM PDT            5.14           1006         -              Normal
  04/15/2026 09 PM PDT            5.11            995         -              Normal
  04/15/2026 10 PM PDT            5.09            988         -              Normal
  04/15/2026 11 PM PDT            5.06            977         -              Normal
  04/16/2026 12 AM PDT            5.04            969         -              Normal
  04/16/2026 01 AM PDT            5.02            962         -              Normal
  04/16/2026 02 AM PDT            5.00            955         -              Normal
  04/16/2026 03 AM PDT            4.98            948         -              Normal
  04/16/2026 04 AM PDT            4.96            941         -              Normal
  04/16/2026 05 AM PDT            4.94            933         -              Normal
  04/16/2026 06 AM PDT            4.93            930         -              Normal
  04/16/2026 07 AM PDT            4.91            923         -              Normal
  04/16/2026 08 AM PDT            4.88            912         -              Normal
  04/16/2026 09 AM PDT            4.87            909         -              Normal
  04/16/2026 10 AM PDT            4.85            902         -              Normal
  04/16/2026 11 AM PDT            4.84            898         -              Normal
  04/16/2026 12 PM PDT            4.83            895         -              Normal
  04/16/2026 01 PM PDT            4.80            884         -              Normal
  04/16/2026 02 PM PDT            4.80            884         0              Normal
  04/16/2026 03 PM PDT            4.77            874         -              Normal
  04/16/2026 04 PM PDT            4.75            867         -              Normal
  04/16/2026 05 PM PDT            4.74            864         -              Normal
  04/16/2026 06 PM PDT            4.73            860         -              Normal
  04/16/2026 07 PM PDT            4.70            850         -              Normal
  04/16/2026 08 PM PDT            4.68            843         -              Normal
  04/16/2026 09 PM PDT            4.67            840         -              Normal
  04/16/2026 10 PM PDT            4.65            833         -              Normal
  04/16/2026 11 PM PDT            4.63            826         -              Normal
  04/17/2026 12 AM PDT            4.61            819         -              Normal
  04/17/2026 01 AM PDT            4.59            813         -              Normal
  04/17/2026 02 AM PDT            4.57            806         -              Normal
  04/17/2026 03 AM PDT            4.56            803         -              Normal
  04/17/2026 04 AM PDT            4.54            797         -              Normal
  04/17/2026 05 AM PDT            4.52            791         -              Normal
  04/17/2026 06 AM PDT            4.50            785         -              Normal
  04/17/2026 07 AM PDT            4.48            779         -              Normal
  04/17/2026 08 AM PDT            4.46            773         -              Normal
  04/17/2026 09 AM PDT            4.45            770         -              Normal
  04/17/2026 10 AM PDT            4.44            767         -              Normal
  04/17/2026 11 AM PDT            4.42            761         -              Normal
  04/17/2026 12 PM PDT            4.41            758         -              Normal
  04/17/2026 01 PM PDT            4.39            752         -              Normal
  04/17/2026 02 PM PDT            4.37            747         -              Normal
  04/17/2026 03 PM PDT            4.37            747         0              Normal
  04/17/2026 04 PM PDT            4.35            741         -              Normal
  04/17/2026 05 PM PDT            4.33            735         -              Normal
  04/17/2026 06 PM PDT            4.32            732         -              Normal
  04/17/2026 07 PM PDT            4.30            726         -              Normal
  04/17/2026 08 PM PDT            4.29            723         -              Normal
  04/17/2026 09 PM PDT            4.27            717         -              Normal
  04/17/2026 10 PM PDT            4.26            715         -              Normal
  04/17/2026 11 PM PDT            4.25            712         -              Normal
  04/18/2026 12 AM PDT            4.24            709         -              Normal
  04/18/2026 01 AM PDT            4.22            703         -              Normal
  04/18/2026 02 AM PDT            4.21            700         -              Normal
  04/18/2026 03 AM PDT            4.20            697         -              Normal
  04/18/2026 04 AM PDT            4.19            695         -              Normal
  04/18/2026 05 AM PDT            4.18            692         -              Normal
  04/18/2026 06 AM PDT            4.16            686         -              Normal
  04/18/2026 07 AM PDT            4.15            683         -              Normal
  04/18/2026 08 AM PDT            4.13            678         -              Normal
  04/18/2026 09 AM PDT            4.12            675         -              Normal
  04/18/2026 10 AM PDT            4.12            675         0              Normal
  04/18/2026 11 AM PDT            4.10            669         -              Normal
  04/18/2026 12 PM PDT            4.10            669         0              Normal
  04/18/2026 01 PM PDT            4.08            664         -              Normal
  04/18/2026 02 PM PDT            4.06            658         -              Normal
  04/18/2026 03 PM PDT            4.06            658         0              Normal
  04/18/2026 04 PM PDT            4.05            655         -              Normal
  04/18/2026 05 PM PDT            4.04            653         -              Normal
  04/18/2026 06 PM PDT            4.03            650         -              Normal
  04/18/2026 07 PM PDT            4.03            650         0              Normal
  04/18/2026 08 PM PDT            4.01            644         -              Normal
  04/18/2026 09 PM PDT            4.00            642         -              Normal
  04/18/2026 10 PM PDT            4.00            642         0              Normal
  04/18/2026 11 PM PDT            3.99            639         -              Normal
  04/19/2026 12 AM PDT            3.98            636         -              Normal
  04/19/2026 01 AM PDT            3.96            631         -              Normal
  04/19/2026 02 AM PDT            3.96            631         0              Normal
  04/19/2026 03 AM PDT            3.94            625         -              Normal
  04/19/2026 04 AM PDT            3.94            625         0              Normal
  04/19/2026 05 AM PDT            3.92            620         -              Normal
  04/19/2026 06 AM PDT            3.92            620         0              Normal
  04/19/2026 07 AM PDT            3.91            617         -              Normal
  04/19/2026 08 AM PDT            3.91            617         0              Normal
  04/19/2026 09 AM PDT            3.89            612         -              Normal
  04/19/2026 10 AM PDT            3.89            612         0              Normal
  04/19/2026 11 AM PDT            3.88            609         -              Normal
  04/19/2026 12 PM PDT            3.87            607         -              Normal
  04/19/2026 01 PM PDT            3.86            604         -              Normal
  04/19/2026 02 PM PDT            3.86            604         0              Normal
  04/19/2026 03 PM PDT            3.85            602         -              Normal
  04/19/2026 04 PM PDT            3.84            599         -              Normal
  04/19/2026 05 PM PDT            3.84            599         0              Normal
  04/19/2026 06 PM PDT            3.83            597         -              Normal
  04/19/2026 07 PM PDT            3.82            594         -              Normal
  04/19/2026 08 PM PDT            3.81            592         -              Normal
  04/19/2026 09 PM PDT            3.80            589         -              Normal
  04/19/2026 10 PM PDT            3.79            586         -              Normal
  04/19/2026 11 PM PDT            3.77            581         -              Normal
  04/20/2026 12 AM PDT            3.76            579         -              Normal
  04/20/2026 01 AM PDT            3.76            579         0              Normal
  04/20/2026 02 AM PDT            3.75            576         -              Normal
  04/20/2026 03 AM PDT            3.74            574         -              Normal
  04/20/2026 04 AM PDT            3.73            571         -              Normal
  04/20/2026 05 AM PDT            3.72            569         -              Normal
  04/20/2026 06 AM PDT            3.71            566         -              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  04/20/2026 07 AM PDT            3.70            564                        Normal
  04/20/2026 08 AM PDT            3.70            564         0              Normal
  04/20/2026 09 AM PDT            3.69            562         -              Normal
  04/20/2026 10 AM PDT            3.68            559         -              Normal
  04/20/2026 11 AM PDT            3.67            557         -              Normal
  04/20/2026 12 PM PDT            3.67            557         0              Normal
  04/20/2026 01 PM PDT            3.66            554         -              Normal
  04/20/2026 02 PM PDT            3.66            554         0              Normal
  04/20/2026 03 PM PDT            3.66            554         0              Normal
  04/20/2026 04 PM PDT            3.67            557         +              Normal
  04/20/2026 05 PM PDT            3.67            557         0              Normal
  04/20/2026 06 PM PDT            3.66            554         -              Normal
  04/20/2026 07 PM PDT            3.67            557         +              Normal
  04/20/2026 08 PM PDT            3.68            559         +              Normal
  04/20/2026 09 PM PDT            3.69            562         +              Normal
  04/20/2026 10 PM PDT            3.70            564         +              Normal
  04/20/2026 11 PM PDT            3.71            566         +              Normal
  04/21/2026 12 AM PDT            3.72            569         +              Normal
  04/21/2026 01 AM PDT            3.73            571         +              Normal
  04/21/2026 02 AM PDT            3.75            576         +              Normal
  04/21/2026 03 AM PDT            3.76            579         +              Normal
  04/21/2026 04 AM PDT            3.77            581         +              Normal
  04/21/2026 05 AM PDT            3.79            586         +              Normal
  04/21/2026 06 AM PDT            3.81            592         +              Normal
  04/21/2026 07 AM PDT            3.83            597         +              Normal
  04/21/2026 08 AM PDT            3.86            604         +              Normal
  04/21/2026 09 AM PDT            3.90            615         +              Normal
  04/21/2026 10 AM PDT            3.96            631         +              Normal
  04/21/2026 11 AM PDT            4.04            653         +              Normal
  04/21/2026 12 PM PDT            4.13            678         +              Normal
  04/21/2026 01 PM PDT            4.25            712         +              Normal
  04/21/2026 02 PM PDT            4.38            749         +              Normal
  04/21/2026 03 PM PDT            4.51            788         +              Normal
  04/21/2026 04 PM PDT            4.66            836         +              Normal
  04/21/2026 05 PM PDT            4.81            888         +              Normal
  04/21/2026 06 PM PDT            4.98            948         +              Normal
  04/21/2026 07 PM PDT            5.17           1017         +              Normal
  04/21/2026 08 PM PDT            5.39           1100         +              Normal
  04/21/2026 09 PM PDT            5.60           1182         +              Normal
  04/21/2026 10 PM PDT            5.80           1263         +              Normal
  04/21/2026 11 PM PDT            5.97           1334         +              Normal
  04/22/2026 12 AM PDT            6.11           1393         +              Normal
  04/22/2026 01 AM PDT            6.21           1436         +              Normal
  04/22/2026 02 AM PDT            6.29           1472         +              Normal
  04/22/2026 03 AM PDT            6.36           1503         +              Normal
  04/22/2026 04 AM PDT            6.44           1538         +              Normal
  04/22/2026 05 AM PDT            6.52           1575         +              Normal
  04/22/2026 06 AM PDT            6.61           1616         +              Normal
  04/22/2026 07 AM PDT            6.70           1657         +              Normal
  04/22/2026 08 AM PDT            6.79           1700         +              Normal
  04/22/2026 09 AM PDT            6.86           1733         +              Normal
  04/22/2026 10 AM PDT            6.92           1761         +              Normal
  04/22/2026 11 AM PDT            6.97           1786         +              Normal
  04/22/2026 12 PM PDT            7.02           1810         +              Normal
  04/22/2026 01 PM PDT            7.06           1829         +              Normal
  04/22/2026 02 PM PDT            7.11           1854         +              Normal
  04/22/2026 03 PM PDT            7.16           1878         +              Normal
  04/22/2026 04 PM PDT            7.21           1903         +              Normal
  04/22/2026 05 PM PDT            7.25           1923         +              Normal
  04/22/2026 06 PM PDT            7.28           1938         +              Normal
  04/22/2026 07 PM PDT            7.30           1948         +              Normal
  04/22/2026 08 PM PDT            7.31           1953         +              Normal
  04/22/2026 09 PM PDT            7.31           1953         0              Normal
  04/22/2026 10 PM PDT            7.30           1948         -              Normal
  04/22/2026 11 PM PDT            7.29           1943         -              Normal
  04/23/2026 12 AM PDT            7.28           1938         -              Normal
  04/23/2026 01 AM PDT            7.26           1928         -              Normal
  04/23/2026 02 AM PDT            7.24           1918         -              Normal
  04/23/2026 03 AM PDT            7.22           1908         -              Normal
  04/23/2026 04 AM PDT            7.20           1898         -              Normal
  04/23/2026 05 AM PDT            7.17           1883         -              Normal
  04/23/2026 06 AM PDT            7.13           1864         -              Normal
  04/23/2026 07 AM PDT            7.09           1844         -              Normal
  04/23/2026 08 AM PDT            7.04           1819         -              Normal
  04/23/2026 09 AM PDT            6.99           1795         -              Normal
  04/23/2026 10 AM PDT            6.94           1771         -              Normal
  04/23/2026 11 AM PDT            6.88           1742         -              Normal
  04/23/2026 12 PM PDT            6.81           1709         -              Normal
  04/23/2026 01 PM PDT            6.75           1681         -              Normal
  04/23/2026 02 PM PDT            6.68           1648         -              Normal
  04/23/2026 03 PM PDT            6.61           1616         -              Normal
  04/23/2026 04 PM PDT            6.53           1579         -              Normal
  04/23/2026 05 PM PDT            6.46           1547         -              Normal
  04/23/2026 06 PM PDT            6.39           1516         -              Normal
  04/23/2026 07 PM PDT            6.32           1485         -              Normal
  04/23/2026 08 PM PDT            6.25           1454         -              Normal
  04/23/2026 09 PM PDT            6.18           1423         -              Normal
  04/23/2026 10 PM PDT            6.11           1393         -              Normal
  04/23/2026 11 PM PDT            6.04           1363         -              Normal
  04/24/2026 12 AM PDT            5.98           1338         -              Normal
  04/24/2026 01 AM PDT            5.91           1309         -              Normal
  04/24/2026 02 AM PDT            5.84           1279         -              Normal
  04/24/2026 03 AM PDT            5.78           1255         -              Normal
  04/24/2026 04 AM PDT            5.72           1230         -              Normal
  04/24/2026 05 AM PDT            5.66           1206         -              Normal
  04/24/2026 06 AM PDT            5.60           1182         -              Normal
  04/24/2026 07 AM PDT            5.54           1158         -              Normal
  04/24/2026 08 AM PDT            5.48           1135         -              Normal
  04/24/2026 09 AM PDT            5.43           1116         -              Normal
  04/24/2026 10 AM PDT            5.37           1092         -              Normal
  04/24/2026 11 AM PDT            5.32           1073         -              Normal
  04/24/2026 12 PM PDT            5.27           1054         -              Normal
  04/24/2026 01 PM PDT            5.23           1039         -              Normal
  04/24/2026 02 PM PDT            5.18           1021         -              Normal
  04/24/2026 03 PM PDT            5.14           1006         -              Normal
  04/24/2026 04 PM PDT            5.10            991         -              Normal
  04/24/2026 05 PM PDT            5.06            977         -              Normal
  04/24/2026 06 PM PDT            5.02            962         -              Normal
  04/24/2026 07 PM PDT            4.98            948         -              Normal
  04/24/2026 08 PM PDT            4.95            937         -              Normal
  04/24/2026 09 PM PDT            4.91            923         -              Normal
  04/24/2026 10 PM PDT            4.88            912         -              Normal
  04/24/2026 11 PM PDT            4.85            902         -              Normal
  04/25/2026 12 AM PDT            4.83            895         -              Normal
  04/25/2026 01 AM PDT            4.80            884         -              Normal
  04/25/2026 02 AM PDT            4.77            874         -              Normal
  04/25/2026 03 AM PDT            4.75            867         -              Normal
  04/25/2026 04 AM PDT            4.73            860         -              Normal
  04/25/2026 05 AM PDT            4.71            853         -              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.