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 26 2026 at 8:31 AM PDTNext Issuance: Apr 27 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:  04/26/2026 at 08:32 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:     04/26/2026 at 09:00 AM PDT
# Maximum Forecast Stage:                       4.75 Feet
# Maximum Forecast Flow:                        867 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  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            6.23           1445         +              Normal
  04/21/2026 12 PM PDT            6.23           1445         0              Normal
  04/21/2026 01 PM PDT            6.26           1458         +              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            6.45           1543         -              Normal
  04/22/2026 07 AM PDT            6.42           1529         -              Normal
  04/22/2026 08 AM PDT            6.41           1525         -              Normal
  04/22/2026 09 AM PDT            6.40           1520         -              Normal
  04/22/2026 10 AM PDT            6.41           1525         +              Normal
  04/22/2026 11 AM PDT            6.43           1534         +              Normal
  04/22/2026 12 PM PDT            6.45           1543         +              Normal
  04/22/2026 01 PM PDT            6.46           1547         +              Normal
  04/22/2026 02 PM PDT            6.46           1547         0              Normal
  04/22/2026 03 PM PDT            6.46           1547         0              Normal
  04/22/2026 04 PM PDT            6.45           1543         -              Normal
  04/22/2026 05 PM PDT            6.45           1543         0              Normal
  04/22/2026 06 PM PDT            6.44           1538         -              Normal
  04/22/2026 07 PM PDT            6.44           1538         0              Normal
  04/22/2026 08 PM PDT            6.42           1529         -              Normal
  04/22/2026 09 PM PDT            6.41           1525         -              Normal
  04/22/2026 10 PM PDT            6.39           1516         -              Normal
  04/22/2026 11 PM PDT            6.38           1511         -              Normal
  04/23/2026 12 AM PDT            6.38           1511         0              Normal
  04/23/2026 01 AM PDT            6.36           1503         -              Normal
  04/23/2026 02 AM PDT            6.36           1503         0              Normal
  04/23/2026 03 AM PDT            6.35           1498         -              Normal
  04/23/2026 04 AM PDT            6.33           1489         -              Normal
  04/23/2026 05 AM PDT            6.33           1489         0              Normal
  04/23/2026 06 AM PDT            6.31           1480         -              Normal
  04/23/2026 07 AM PDT            6.29           1472         -              Normal
  04/23/2026 08 AM PDT            6.27           1463         -              Normal
  04/23/2026 09 AM PDT            6.24           1450         -              Normal
  04/23/2026 10 AM PDT            6.23           1445         -              Normal
  04/23/2026 11 AM PDT            6.21           1436         -              Normal
  04/23/2026 12 PM PDT            6.19           1428         -              Normal
  04/23/2026 01 PM PDT            6.16           1415         -              Normal
  04/23/2026 02 PM PDT            6.14           1406         -              Normal
  04/23/2026 03 PM PDT            6.12           1398         -              Normal
  04/23/2026 04 PM PDT            6.09           1385         -              Normal
  04/23/2026 05 PM PDT            6.07           1376         -              Normal
  04/23/2026 06 PM PDT            6.04           1363         -              Normal
  04/23/2026 07 PM PDT            6.01           1351         -              Normal
  04/23/2026 08 PM PDT            5.98           1338         -              Normal
  04/23/2026 09 PM PDT            5.95           1325         -              Normal
  04/23/2026 10 PM PDT            5.94           1321         -              Normal
  04/23/2026 11 PM PDT            5.91           1309         -              Normal
  04/24/2026 12 AM PDT            5.88           1296         -              Normal
  04/24/2026 01 AM PDT            5.86           1288         -              Normal
  04/24/2026 02 AM PDT            5.82           1271         -              Normal
  04/24/2026 03 AM PDT            5.80           1263         -              Normal
  04/24/2026 04 AM PDT            5.77           1251         -              Normal
  04/24/2026 05 AM PDT            5.75           1243         -              Normal
  04/24/2026 06 AM PDT            5.72           1230         -              Normal
  04/24/2026 07 AM PDT            5.69           1218         -              Normal
  04/24/2026 08 AM PDT            5.67           1210         -              Normal
  04/24/2026 09 AM PDT            5.65           1202         -              Normal
  04/24/2026 10 AM PDT            5.62           1190         -              Normal
  04/24/2026 11 AM PDT            5.59           1178         -              Normal
  04/24/2026 12 PM PDT            5.56           1166         -              Normal
  04/24/2026 01 PM PDT            5.54           1158         -              Normal
  04/24/2026 02 PM PDT            5.53           1155         -              Normal
  04/24/2026 03 PM PDT            5.51           1147         -              Normal
  04/24/2026 04 PM PDT            5.48           1135         -              Normal
  04/24/2026 05 PM PDT            5.47           1131         -              Normal
  04/24/2026 06 PM PDT            5.44           1119         -              Normal
  04/24/2026 07 PM PDT            5.42           1112         -              Normal
  04/24/2026 08 PM PDT            5.39           1100         -              Normal
  04/24/2026 09 PM PDT            5.38           1096         -              Normal
  04/24/2026 10 PM PDT            5.34           1081         -              Normal
  04/24/2026 11 PM PDT            5.32           1073         -              Normal
  04/25/2026 12 AM PDT            5.30           1066         -              Normal
  04/25/2026 01 AM PDT            5.29           1062         -              Normal
  04/25/2026 02 AM PDT            5.26           1051         -              Normal
  04/25/2026 03 AM PDT            5.26           1051         0              Normal
  04/25/2026 04 AM PDT            5.23           1039         -              Normal
  04/25/2026 05 AM PDT            5.21           1032         -              Normal
  04/25/2026 06 AM PDT            5.19           1024         -              Normal
  04/25/2026 07 AM PDT            5.17           1017         -              Normal
  04/25/2026 08 AM PDT            5.15           1010         -              Normal
  04/25/2026 09 AM PDT            5.13           1002         -              Normal
  04/25/2026 10 AM PDT            5.11            995         -              Normal
  04/25/2026 11 AM PDT            5.09            988         -              Normal
  04/25/2026 12 PM PDT            5.08            984         -              Normal
  04/25/2026 01 PM PDT            5.06            977         -              Normal
  04/25/2026 02 PM PDT            5.04            969         -              Normal
  04/25/2026 03 PM PDT            5.03            966         -              Normal
  04/25/2026 04 PM PDT            5.01            959         -              Normal
  04/25/2026 05 PM PDT            4.98            948         -              Normal
  04/25/2026 06 PM PDT            4.97            944         -              Normal
  04/25/2026 07 PM PDT            4.96            941         -              Normal
  04/25/2026 08 PM PDT            4.94            933         -              Normal
  04/25/2026 09 PM PDT            4.92            926         -              Normal
  04/25/2026 10 PM PDT            4.91            923         -              Normal
  04/25/2026 11 PM PDT            4.88            912         -              Normal
  04/26/2026 12 AM PDT            4.87            909         -              Normal
  04/26/2026 01 AM PDT            4.86            905         -              Normal
  04/26/2026 02 AM PDT            4.85            902         -              Normal
  04/26/2026 03 AM PDT            4.83            895         -              Normal
  04/26/2026 04 AM PDT            4.82            891         -              Normal
  04/26/2026 05 AM PDT            4.81            888         -              Normal
  04/26/2026 06 AM PDT            4.79            881         -              Normal
  04/26/2026 07 AM PDT            4.78            877         -              Normal
  04/26/2026 08 AM PDT            4.77            874         -              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  04/26/2026 09 AM PDT            4.75            867                        Normal
  04/26/2026 10 AM PDT            4.74            864         -              Normal
  04/26/2026 11 AM PDT            4.72            857         -              Normal
  04/26/2026 12 PM PDT            4.70            850         -              Normal
  04/26/2026 01 PM PDT            4.68            843         -              Normal
  04/26/2026 02 PM PDT            4.66            836         -              Normal
  04/26/2026 03 PM PDT            4.64            830         -              Normal
  04/26/2026 04 PM PDT            4.62            823         -              Normal
  04/26/2026 05 PM PDT            4.60            816         -              Normal
  04/26/2026 06 PM PDT            4.58            809         -              Normal
  04/26/2026 07 PM PDT            4.56            803         -              Normal
  04/26/2026 08 PM PDT            4.54            797         -              Normal
  04/26/2026 09 PM PDT            4.52            791         -              Normal
  04/26/2026 10 PM PDT            4.50            785         -              Normal
  04/26/2026 11 PM PDT            4.48            779         -              Normal
  04/27/2026 12 AM PDT            4.46            773         -              Normal
  04/27/2026 01 AM PDT            4.44            767         -              Normal
  04/27/2026 02 AM PDT            4.42            761         -              Normal
  04/27/2026 03 AM PDT            4.41            758         -              Normal
  04/27/2026 04 AM PDT            4.39            752         -              Normal
  04/27/2026 05 AM PDT            4.38            749         -              Normal
  04/27/2026 06 AM PDT            4.37            747         -              Normal
  04/27/2026 07 AM PDT            4.35            741         -              Normal
  04/27/2026 08 AM PDT            4.34            738         -              Normal
  04/27/2026 09 AM PDT            4.32            732         -              Normal
  04/27/2026 10 AM PDT            4.31            729         -              Normal
  04/27/2026 11 AM PDT            4.30            726         -              Normal
  04/27/2026 12 PM PDT            4.28            720         -              Normal
  04/27/2026 01 PM PDT            4.27            717         -              Normal
  04/27/2026 02 PM PDT            4.25            712         -              Normal
  04/27/2026 03 PM PDT            4.24            709         -              Normal
  04/27/2026 04 PM PDT            4.23            706         -              Normal
  04/27/2026 05 PM PDT            4.21            700         -              Normal
  04/27/2026 06 PM PDT            4.19            695         -              Normal
  04/27/2026 07 PM PDT            4.18            692         -              Normal
  04/27/2026 08 PM PDT            4.17            689         -              Normal
  04/27/2026 09 PM PDT            4.15            683         -              Normal
  04/27/2026 10 PM PDT            4.14            680         -              Normal
  04/27/2026 11 PM PDT            4.12            675         -              Normal
  04/28/2026 12 AM PDT            4.11            672         -              Normal
  04/28/2026 01 AM PDT            4.10            669         -              Normal
  04/28/2026 02 AM PDT            4.08            664         -              Normal
  04/28/2026 03 AM PDT            4.07            661         -              Normal
  04/28/2026 04 AM PDT            4.06            658         -              Normal
  04/28/2026 05 AM PDT            4.04            653         -              Normal
  04/28/2026 06 AM PDT            4.03            650         -              Normal
  04/28/2026 07 AM PDT            4.02            647         -              Normal
  04/28/2026 08 AM PDT            4.01            644         -              Normal
  04/28/2026 09 AM PDT            3.99            639         -              Normal
  04/28/2026 10 AM PDT            3.98            636         -              Normal
  04/28/2026 11 AM PDT            3.97            633         -              Normal
  04/28/2026 12 PM PDT            3.96            631         -              Normal
  04/28/2026 01 PM PDT            3.94            625         -              Normal
  04/28/2026 02 PM PDT            3.93            623         -              Normal
  04/28/2026 03 PM PDT            3.92            620         -              Normal
  04/28/2026 04 PM PDT            3.90            615         -              Normal
  04/28/2026 05 PM PDT            3.89            612         -              Normal
  04/28/2026 06 PM PDT            3.87            607         -              Normal
  04/28/2026 07 PM PDT            3.86            604         -              Normal
  04/28/2026 08 PM PDT            3.84            599         -              Normal
  04/28/2026 09 PM PDT            3.83            597         -              Normal
  04/28/2026 10 PM PDT            3.81            592         -              Normal
  04/28/2026 11 PM PDT            3.80            589         -              Normal
  04/29/2026 12 AM PDT            3.79            586         -              Normal
  04/29/2026 01 AM PDT            3.77            581         -              Normal
  04/29/2026 02 AM PDT            3.76            579         -              Normal
  04/29/2026 03 AM PDT            3.75            576         -              Normal
  04/29/2026 04 AM PDT            3.73            571         -              Normal
  04/29/2026 05 AM PDT            3.72            569         -              Normal
  04/29/2026 06 AM PDT            3.71            566         -              Normal
  04/29/2026 07 AM PDT            3.69            562         -              Normal
  04/29/2026 08 AM PDT            3.68            559         -              Normal
  04/29/2026 09 AM PDT            3.67            557         -              Normal
  04/29/2026 10 AM PDT            3.66            554         -              Normal
  04/29/2026 11 AM PDT            3.65            552         -              Normal
  04/29/2026 12 PM PDT            3.64            549         -              Normal
  04/29/2026 01 PM PDT            3.63            547         -              Normal
  04/29/2026 02 PM PDT            3.62            544         -              Normal
  04/29/2026 03 PM PDT            3.61            542         -              Normal
  04/29/2026 04 PM PDT            3.60            540         -              Normal
  04/29/2026 05 PM PDT            3.59            537         -              Normal
  04/29/2026 06 PM PDT            3.57            532         -              Normal
  04/29/2026 07 PM PDT            3.56            530         -              Normal
  04/29/2026 08 PM PDT            3.55            528         -              Normal
  04/29/2026 09 PM PDT            3.54            525         -              Normal
  04/29/2026 10 PM PDT            3.54            525         0              Normal
  04/29/2026 11 PM PDT            3.53            523         -              Normal
  04/30/2026 12 AM PDT            3.52            521         -              Normal
  04/30/2026 01 AM PDT            3.51            518         -              Normal
  04/30/2026 02 AM PDT            3.50            516         -              Normal
  04/30/2026 03 AM PDT            3.49            514         -              Normal
  04/30/2026 04 AM PDT            3.48            511         -              Normal
  04/30/2026 05 AM PDT            3.48            511         0              Normal
  04/30/2026 06 AM PDT            3.47            509         -              Normal
  04/30/2026 07 AM PDT            3.46            507         -              Normal
  04/30/2026 08 AM PDT            3.45            504         -              Normal
  04/30/2026 09 AM PDT            3.45            504         0              Normal
  04/30/2026 10 AM PDT            3.44            502         -              Normal
  04/30/2026 11 AM PDT            3.43            500         -              Normal
  04/30/2026 12 PM PDT            3.42            497         -              Normal
  04/30/2026 01 PM PDT            3.42            497         0              Normal
  04/30/2026 02 PM PDT            3.41            495         -              Normal
  04/30/2026 03 PM PDT            3.40            493         -              Normal
  04/30/2026 04 PM PDT            3.40            493         0              Normal
  04/30/2026 05 PM PDT            3.39            491         -              Normal
  04/30/2026 06 PM PDT            3.38            488         -              Normal
  04/30/2026 07 PM PDT            3.37            486         -              Normal
  04/30/2026 08 PM PDT            3.36            484         -              Normal
  04/30/2026 09 PM PDT            3.36            484         0              Normal
  04/30/2026 10 PM PDT            3.35            482         -              Normal
  04/30/2026 11 PM PDT            3.34            479         -              Normal
  05/01/2026 12 AM PDT            3.34            479         0              Normal
  05/01/2026 01 AM PDT            3.33            477         -              Normal
  05/01/2026 02 AM PDT            3.33            477         0              Normal
  05/01/2026 03 AM PDT            3.32            475         -              Normal
  05/01/2026 04 AM PDT            3.31            473         -              Normal
  05/01/2026 05 AM PDT            3.31            473         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.