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 23 2026 at 7:26 AM PDTNext Issuance: Apr 24 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:  04/23/2026 at 07:27 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:     04/23/2026 at 08:00 AM PDT
# Maximum Forecast Stage:                       6.25 Feet
# Maximum Forecast Flow:                        1454 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  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            6.23           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            6.30           1476         -              Normal
  04/23/2026 07 AM PDT            6.28           1467         -              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  04/23/2026 08 AM PDT            6.25           1454                        Normal
  04/23/2026 09 AM PDT            6.23           1445         -              Normal
  04/23/2026 10 AM PDT            6.20           1432         -              Normal
  04/23/2026 11 AM PDT            6.18           1423         -              Normal
  04/23/2026 12 PM PDT            6.16           1415         -              Normal
  04/23/2026 01 PM PDT            6.15           1410         -              Normal
  04/23/2026 02 PM PDT            6.13           1402         -              Normal
  04/23/2026 03 PM PDT            6.11           1393         -              Normal
  04/23/2026 04 PM PDT            6.10           1389         -              Normal
  04/23/2026 05 PM PDT            6.08           1380         -              Normal
  04/23/2026 06 PM PDT            6.06           1372         -              Normal
  04/23/2026 07 PM PDT            6.03           1359         -              Normal
  04/23/2026 08 PM PDT            5.99           1342         -              Normal
  04/23/2026 09 PM PDT            5.96           1329         -              Normal
  04/23/2026 10 PM PDT            5.92           1313         -              Normal
  04/23/2026 11 PM PDT            5.89           1300         -              Normal
  04/24/2026 12 AM PDT            5.86           1288         -              Normal
  04/24/2026 01 AM PDT            5.83           1275         -              Normal
  04/24/2026 02 AM PDT            5.81           1267         -              Normal
  04/24/2026 03 AM PDT            5.78           1255         -              Normal
  04/24/2026 04 AM PDT            5.78           1255         0              Normal
  04/24/2026 05 AM PDT            5.78           1255         0              Normal
  04/24/2026 06 AM PDT            5.78           1255         0              Normal
  04/24/2026 07 AM PDT            5.76           1247         -              Normal
  04/24/2026 08 AM PDT            5.75           1243         -              Normal
  04/24/2026 09 AM PDT            5.73           1234         -              Normal
  04/24/2026 10 AM PDT            5.71           1226         -              Normal
  04/24/2026 11 AM PDT            5.68           1214         -              Normal
  04/24/2026 12 PM PDT            5.66           1206         -              Normal
  04/24/2026 01 PM PDT            5.63           1194         -              Normal
  04/24/2026 02 PM PDT            5.61           1186         -              Normal
  04/24/2026 03 PM PDT            5.58           1174         -              Normal
  04/24/2026 04 PM PDT            5.56           1166         -              Normal
  04/24/2026 05 PM PDT            5.53           1155         -              Normal
  04/24/2026 06 PM PDT            5.50           1143         -              Normal
  04/24/2026 07 PM PDT            5.48           1135         -              Normal
  04/24/2026 08 PM PDT            5.45           1123         -              Normal
  04/24/2026 09 PM PDT            5.43           1116         -              Normal
  04/24/2026 10 PM PDT            5.41           1108         -              Normal
  04/24/2026 11 PM PDT            5.38           1096         -              Normal
  04/25/2026 12 AM PDT            5.36           1089         -              Normal
  04/25/2026 01 AM PDT            5.33           1077         -              Normal
  04/25/2026 02 AM PDT            5.31           1070         -              Normal
  04/25/2026 03 AM PDT            5.29           1062         -              Normal
  04/25/2026 04 AM PDT            5.26           1051         -              Normal
  04/25/2026 05 AM PDT            5.24           1043         -              Normal
  04/25/2026 06 AM PDT            5.22           1036         -              Normal
  04/25/2026 07 AM PDT            5.20           1028         -              Normal
  04/25/2026 08 AM PDT            5.17           1017         -              Normal
  04/25/2026 09 AM PDT            5.15           1010         -              Normal
  04/25/2026 10 AM PDT            5.13           1002         -              Normal
  04/25/2026 11 AM PDT            5.11            995         -              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            5.02            962         -              Normal
  04/25/2026 04 PM PDT            5.00            955         -              Normal
  04/25/2026 05 PM PDT            4.98            948         -              Normal
  04/25/2026 06 PM PDT            4.95            937         -              Normal
  04/25/2026 07 PM PDT            4.93            930         -              Normal
  04/25/2026 08 PM PDT            4.91            923         -              Normal
  04/25/2026 09 PM PDT            4.88            912         -              Normal
  04/25/2026 10 PM PDT            4.86            905         -              Normal
  04/25/2026 11 PM PDT            4.84            898         -              Normal
  04/26/2026 12 AM PDT            4.82            891         -              Normal
  04/26/2026 01 AM PDT            4.80            884         -              Normal
  04/26/2026 02 AM PDT            4.78            877         -              Normal
  04/26/2026 03 AM PDT            4.75            867         -              Normal
  04/26/2026 04 AM PDT            4.73            860         -              Normal
  04/26/2026 05 AM PDT            4.71            853         -              Normal
  04/26/2026 06 AM PDT            4.69            846         -              Normal
  04/26/2026 07 AM PDT            4.67            840         -              Normal
  04/26/2026 08 AM PDT            4.65            833         -              Normal
  04/26/2026 09 AM PDT            4.63            826         -              Normal
  04/26/2026 10 AM PDT            4.61            819         -              Normal
  04/26/2026 11 AM PDT            4.59            813         -              Normal
  04/26/2026 12 PM PDT            4.57            806         -              Normal
  04/26/2026 01 PM PDT            4.55            800         -              Normal
  04/26/2026 02 PM PDT            4.54            797         -              Normal
  04/26/2026 03 PM PDT            4.52            791         -              Normal
  04/26/2026 04 PM PDT            4.50            785         -              Normal
  04/26/2026 05 PM PDT            4.48            779         -              Normal
  04/26/2026 06 PM PDT            4.46            773         -              Normal
  04/26/2026 07 PM PDT            4.44            767         -              Normal
  04/26/2026 08 PM PDT            4.42            761         -              Normal
  04/26/2026 09 PM PDT            4.41            758         -              Normal
  04/26/2026 10 PM PDT            4.39            752         -              Normal
  04/26/2026 11 PM PDT            4.37            747         -              Normal
  04/27/2026 12 AM PDT            4.36            744         -              Normal
  04/27/2026 01 AM PDT            4.34            738         -              Normal
  04/27/2026 02 AM PDT            4.33            735         -              Normal
  04/27/2026 03 AM PDT            4.31            729         -              Normal
  04/27/2026 04 AM PDT            4.30            726         -              Normal
  04/27/2026 05 AM PDT            4.28            720         -              Normal
  04/27/2026 06 AM PDT            4.27            717         -              Normal
  04/27/2026 07 AM PDT            4.25            712         -              Normal
  04/27/2026 08 AM PDT            4.24            709         -              Normal
  04/27/2026 09 AM PDT            4.23            706         -              Normal
  04/27/2026 10 AM PDT            4.21            700         -              Normal
  04/27/2026 11 AM PDT            4.20            697         -              Normal
  04/27/2026 12 PM PDT            4.19            695         -              Normal
  04/27/2026 01 PM PDT            4.17            689         -              Normal
  04/27/2026 02 PM PDT            4.16            686         -              Normal
  04/27/2026 03 PM PDT            4.15            683         -              Normal
  04/27/2026 04 PM PDT            4.14            680         -              Normal
  04/27/2026 05 PM PDT            4.12            675         -              Normal
  04/27/2026 06 PM PDT            4.11            672         -              Normal
  04/27/2026 07 PM PDT            4.10            669         -              Normal
  04/27/2026 08 PM PDT            4.08            664         -              Normal
  04/27/2026 09 PM PDT            4.07            661         -              Normal
  04/27/2026 10 PM PDT            4.06            658         -              Normal
  04/27/2026 11 PM PDT            4.05            655         -              Normal
  04/28/2026 12 AM PDT            4.04            653         -              Normal
  04/28/2026 01 AM PDT            4.03            650         -              Normal
  04/28/2026 02 AM PDT            4.02            647         -              Normal
  04/28/2026 03 AM PDT            4.01            644         -              Normal
  04/28/2026 04 AM PDT            4.00            642         -              Normal
  04/28/2026 05 AM PDT            3.99            639         -              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.