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 22 2026 at 7:28 AM PDTNext Issuance: Apr 23 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:  04/22/2026 at 07:29 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  04/22/2026 at 12:00 AM PDT
# Maximum Observed Stage:                       6.63 Feet
# Maximum Observed Flow:                        1625 cfs
#
# Earliest Date & Time of Maximum Forecast:     04/22/2026 at 10:00 PM PDT
# Maximum Forecast Stage:                       7.58 Feet
# Maximum Forecast Flow:                        2091 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  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
  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            3.70            564         0              Normal
  04/20/2026 10 AM PDT            3.70            564         0              Normal
  04/20/2026 11 AM PDT            3.69            562         -              Normal
  04/20/2026 12 PM PDT            3.70            564         +              Normal
  04/20/2026 01 PM PDT            3.73            571         +              Normal
  04/20/2026 02 PM PDT            3.76            579         +              Normal
  04/20/2026 03 PM PDT            3.79            586         +              Normal
  04/20/2026 04 PM PDT            3.81            592         +              Normal
  04/20/2026 05 PM PDT            3.86            604         +              Normal
  04/20/2026 06 PM PDT            3.95            628         +              Normal
  04/20/2026 07 PM PDT            4.07            661         +              Normal
  04/20/2026 08 PM PDT            4.26            715         +              Normal
  04/20/2026 09 PM PDT            4.59            813         +              Normal
  04/20/2026 10 PM PDT            4.93            930         +              Normal
  04/20/2026 11 PM PDT            5.21           1032         +              Normal
  04/21/2026 12 AM PDT            5.39           1100         +              Normal
  04/21/2026 01 AM PDT            5.50           1143         +              Normal
  04/21/2026 02 AM PDT            5.56           1166         +              Normal
  04/21/2026 03 AM PDT            5.63           1194         +              Normal
  04/21/2026 04 AM PDT            5.72           1230         +              Normal
  04/21/2026 05 AM PDT            5.85           1284         +              Normal
  04/21/2026 06 AM PDT            5.98           1338         +              Normal
  04/21/2026 07 AM PDT            6.07           1376         +              Normal
  04/21/2026 08 AM PDT            6.14           1406         +              Normal
  04/21/2026 09 AM PDT            6.20           1432         +              Normal
  04/21/2026 10 AM PDT            6.22           1441         +              Normal
  04/21/2026 11 AM PDT            6.25           1454         +              Normal
  04/21/2026 12 PM PDT            6.26           1458         +              Normal
  04/21/2026 01 PM PDT            6.26           1458         0              Normal
  04/21/2026 02 PM PDT            6.32           1485         +              Normal
  04/21/2026 03 PM PDT            6.37           1507         +              Normal
  04/21/2026 04 PM PDT            6.43           1534         +              Normal
  04/21/2026 05 PM PDT            6.49           1561         +              Normal
  04/21/2026 06 PM PDT            6.54           1584         +              Normal
  04/21/2026 07 PM PDT            6.58           1602         +              Normal
  04/21/2026 08 PM PDT            6.60           1611         +              Normal
  04/21/2026 09 PM PDT            6.63           1625         +              Normal
  04/21/2026 10 PM PDT            6.63           1625         0              Normal
  04/21/2026 11 PM PDT            6.63           1625         0              Normal
  04/22/2026 12 AM PDT            6.63           1625         0              Normal
  04/22/2026 01 AM PDT            6.61           1616         -              Normal
  04/22/2026 02 AM PDT            6.58           1602         -              Normal
  04/22/2026 03 AM PDT            6.55           1588         -              Normal
  04/22/2026 04 AM PDT            6.51           1570         -              Normal
  04/22/2026 05 AM PDT            6.47           1552         -              Normal
  04/22/2026 06 AM PDT            6.47           1552         0              Normal
  04/22/2026 07 AM PDT            6.47           1552         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  04/22/2026 08 AM PDT            6.47           1552                        Normal
  04/22/2026 09 AM PDT            6.49           1561         +              Normal
  04/22/2026 10 AM PDT            6.52           1575         +              Normal
  04/22/2026 11 AM PDT            6.57           1597         +              Normal
  04/22/2026 12 PM PDT            6.63           1625         +              Normal
  04/22/2026 01 PM PDT            6.72           1667         +              Normal
  04/22/2026 02 PM PDT            6.83           1719         +              Normal
  04/22/2026 03 PM PDT            6.95           1776         +              Normal
  04/22/2026 04 PM PDT            7.09           1844         +              Normal
  04/22/2026 05 PM PDT            7.23           1913         +              Normal
  04/22/2026 06 PM PDT            7.36           1978         +              Normal
  04/22/2026 07 PM PDT            7.46           2029         +              Normal
  04/22/2026 08 PM PDT            7.53           2065         +              Normal
  04/22/2026 09 PM PDT            7.57           2086         +              Normal
  04/22/2026 10 PM PDT            7.58           2091         +              Normal
  04/22/2026 11 PM PDT            7.57           2086         -              Normal
  04/23/2026 12 AM PDT            7.55           2076         -              Normal
  04/23/2026 01 AM PDT            7.51           2055         -              Normal
  04/23/2026 02 AM PDT            7.47           2034         -              Normal
  04/23/2026 03 AM PDT            7.43           2014         -              Normal
  04/23/2026 04 AM PDT            7.38           1989         -              Normal
  04/23/2026 05 AM PDT            7.34           1968         -              Normal
  04/23/2026 06 AM PDT            7.30           1948         -              Normal
  04/23/2026 07 AM PDT            7.26           1928         -              Normal
  04/23/2026 08 AM PDT            7.22           1908         -              Normal
  04/23/2026 09 AM PDT            7.17           1883         -              Normal
  04/23/2026 10 AM PDT            7.13           1864         -              Normal
  04/23/2026 11 AM PDT            7.07           1834         -              Normal
  04/23/2026 12 PM PDT            7.02           1810         -              Normal
  04/23/2026 01 PM PDT            6.96           1781         -              Normal
  04/23/2026 02 PM PDT            6.90           1752         -              Normal
  04/23/2026 03 PM PDT            6.83           1719         -              Normal
  04/23/2026 04 PM PDT            6.78           1695         -              Normal
  04/23/2026 05 PM PDT            6.72           1667         -              Normal
  04/23/2026 06 PM PDT            6.66           1639         -              Normal
  04/23/2026 07 PM PDT            6.60           1611         -              Normal
  04/23/2026 08 PM PDT            6.55           1588         -              Normal
  04/23/2026 09 PM PDT            6.50           1565         -              Normal
  04/23/2026 10 PM PDT            6.45           1543         -              Normal
  04/23/2026 11 PM PDT            6.41           1525         -              Normal
  04/24/2026 12 AM PDT            6.37           1507         -              Normal
  04/24/2026 01 AM PDT            6.33           1489         -              Normal
  04/24/2026 02 AM PDT            6.29           1472         -              Normal
  04/24/2026 03 AM PDT            6.25           1454         -              Normal
  04/24/2026 04 AM PDT            6.22           1441         -              Normal
  04/24/2026 05 AM PDT            6.18           1423         -              Normal
  04/24/2026 06 AM PDT            6.15           1410         -              Normal
  04/24/2026 07 AM PDT            6.12           1398         -              Normal
  04/24/2026 08 AM PDT            6.08           1380         -              Normal
  04/24/2026 09 AM PDT            6.05           1368         -              Normal
  04/24/2026 10 AM PDT            6.02           1355         -              Normal
  04/24/2026 11 AM PDT            5.99           1342         -              Normal
  04/24/2026 12 PM PDT            5.96           1329         -              Normal
  04/24/2026 01 PM PDT            5.92           1313         -              Normal
  04/24/2026 02 PM PDT            5.89           1300         -              Normal
  04/24/2026 03 PM PDT            5.86           1288         -              Normal
  04/24/2026 04 PM PDT            5.83           1275         -              Normal
  04/24/2026 05 PM PDT            5.80           1263         -              Normal
  04/24/2026 06 PM PDT            5.76           1247         -              Normal
  04/24/2026 07 PM PDT            5.73           1234         -              Normal
  04/24/2026 08 PM PDT            5.70           1222         -              Normal
  04/24/2026 09 PM PDT            5.67           1210         -              Normal
  04/24/2026 10 PM PDT            5.64           1198         -              Normal
  04/24/2026 11 PM PDT            5.61           1186         -              Normal
  04/25/2026 12 AM PDT            5.58           1174         -              Normal
  04/25/2026 01 AM PDT            5.55           1162         -              Normal
  04/25/2026 02 AM PDT            5.52           1151         -              Normal
  04/25/2026 03 AM PDT            5.50           1143         -              Normal
  04/25/2026 04 AM PDT            5.47           1131         -              Normal
  04/25/2026 05 AM PDT            5.44           1119         -              Normal
  04/25/2026 06 AM PDT            5.42           1112         -              Normal
  04/25/2026 07 AM PDT            5.39           1100         -              Normal
  04/25/2026 08 AM PDT            5.37           1092         -              Normal
  04/25/2026 09 AM PDT            5.34           1081         -              Normal
  04/25/2026 10 AM PDT            5.32           1073         -              Normal
  04/25/2026 11 AM PDT            5.29           1062         -              Normal
  04/25/2026 12 PM PDT            5.27           1054         -              Normal
  04/25/2026 01 PM PDT            5.25           1047         -              Normal
  04/25/2026 02 PM PDT            5.22           1036         -              Normal
  04/25/2026 03 PM PDT            5.20           1028         -              Normal
  04/25/2026 04 PM PDT            5.18           1021         -              Normal
  04/25/2026 05 PM PDT            5.16           1013         -              Normal
  04/25/2026 06 PM PDT            5.13           1002         -              Normal
  04/25/2026 07 PM PDT            5.11            995         -              Normal
  04/25/2026 08 PM PDT            5.09            988         -              Normal
  04/25/2026 09 PM PDT            5.07            980         -              Normal
  04/25/2026 10 PM PDT            5.05            973         -              Normal
  04/25/2026 11 PM PDT            5.03            966         -              Normal
  04/26/2026 12 AM PDT            5.01            959         -              Normal
  04/26/2026 01 AM PDT            5.00            955         -              Normal
  04/26/2026 02 AM PDT            4.98            948         -              Normal
  04/26/2026 03 AM PDT            4.96            941         -              Normal
  04/26/2026 04 AM PDT            4.94            933         -              Normal
  04/26/2026 05 AM PDT            4.92            926         -              Normal
  04/26/2026 06 AM PDT            4.91            923         -              Normal
  04/26/2026 07 AM PDT            4.89            916         -              Normal
  04/26/2026 08 AM PDT            4.87            909         -              Normal
  04/26/2026 09 AM PDT            4.86            905         -              Normal
  04/26/2026 10 AM PDT            4.84            898         -              Normal
  04/26/2026 11 AM PDT            4.83            895         -              Normal
  04/26/2026 12 PM PDT            4.81            888         -              Normal
  04/26/2026 01 PM PDT            4.79            881         -              Normal
  04/26/2026 02 PM PDT            4.78            877         -              Normal
  04/26/2026 03 PM PDT            4.76            870         -              Normal
  04/26/2026 04 PM PDT            4.75            867         -              Normal
  04/26/2026 05 PM PDT            4.73            860         -              Normal
  04/26/2026 06 PM PDT            4.71            853         -              Normal
  04/26/2026 07 PM PDT            4.70            850         -              Normal
  04/26/2026 08 PM PDT            4.69            846         -              Normal
  04/26/2026 09 PM PDT            4.67            840         -              Normal
  04/26/2026 10 PM PDT            4.66            836         -              Normal
  04/26/2026 11 PM PDT            4.64            830         -              Normal
  04/27/2026 12 AM PDT            4.63            826         -              Normal
  04/27/2026 01 AM PDT            4.62            823         -              Normal
  04/27/2026 02 AM PDT            4.60            816         -              Normal
  04/27/2026 03 AM PDT            4.59            813         -              Normal
  04/27/2026 04 AM PDT            4.58            809         -              Normal
  04/27/2026 05 AM PDT            4.57            806         -              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.