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 17 2026 at 7:27 AM PDTNext Issuance: Apr 18 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:  04/17/2026 at 07:29 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  04/12/2026 at 08:00 PM PDT
# Maximum Observed Stage:                       7.39 Feet
# Maximum Observed Flow:                        1994 cfs
#
# Earliest Date & Time of Maximum Forecast:     04/22/2026 at 05:00 AM PDT
# Maximum Forecast Stage:                       7.67 Feet
# Maximum Forecast Flow:                        2138 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  04/12/2026 07 AM PDT            6.76           1686                        Normal
  04/12/2026 08 AM PDT            6.82           1714         +              Normal
  04/12/2026 09 AM PDT            6.83           1719         +              Normal
  04/12/2026 10 AM PDT            6.84           1723         +              Normal
  04/12/2026 11 AM PDT            6.89           1747         +              Normal
  04/12/2026 12 PM PDT            6.95           1776         +              Normal
  04/12/2026 01 PM PDT            7.04           1819         +              Normal
  04/12/2026 02 PM PDT            7.12           1859         +              Normal
  04/12/2026 03 PM PDT            7.21           1903         +              Normal
  04/12/2026 04 PM PDT            7.30           1948         +              Normal
  04/12/2026 05 PM PDT            7.35           1973         +              Normal
  04/12/2026 06 PM PDT            7.39           1994         +              Normal
  04/12/2026 07 PM PDT            7.39           1994         0              Normal
  04/12/2026 08 PM PDT            7.39           1994         0              Normal
  04/12/2026 09 PM PDT            7.38           1989         -              Normal
  04/12/2026 10 PM PDT            7.37           1983         -              Normal
  04/12/2026 11 PM PDT            7.37           1983         0              Normal
  04/13/2026 12 AM PDT            7.36           1978         -              Normal
  04/13/2026 01 AM PDT            7.34           1968         -              Normal
  04/13/2026 02 AM PDT            7.34           1968         0              Normal
  04/13/2026 03 AM PDT            7.31           1953         -              Normal
  04/13/2026 04 AM PDT            7.29           1943         -              Normal
  04/13/2026 05 AM PDT            7.28           1938         -              Normal
  04/13/2026 06 AM PDT            7.26           1928         -              Normal
  04/13/2026 07 AM PDT            7.26           1928         0              Normal
  04/13/2026 08 AM PDT            7.25           1923         -              Normal
  04/13/2026 09 AM PDT            7.24           1918         -              Normal
  04/13/2026 10 AM PDT            7.23           1913         -              Normal
  04/13/2026 11 AM PDT            7.22           1908         -              Normal
  04/13/2026 12 PM PDT            7.20           1898         -              Normal
  04/13/2026 01 PM PDT            7.17           1883         -              Normal
  04/13/2026 02 PM PDT            7.14           1868         -              Normal
  04/13/2026 03 PM PDT            7.11           1854         -              Normal
  04/13/2026 04 PM PDT            7.08           1839         -              Normal
  04/13/2026 05 PM PDT            7.04           1819         -              Normal
  04/13/2026 06 PM PDT            7.00           1800         -              Normal
  04/13/2026 07 PM PDT            6.96           1781         -              Normal
  04/13/2026 08 PM PDT            6.92           1761         -              Normal
  04/13/2026 09 PM PDT            6.88           1742         -              Normal
  04/13/2026 10 PM PDT            6.84           1723         -              Normal
  04/13/2026 11 PM PDT            6.80           1704         -              Normal
  04/14/2026 12 AM PDT            6.74           1676         -              Normal
  04/14/2026 01 AM PDT            6.69           1653         -              Normal
  04/14/2026 02 AM PDT            6.65           1634         -              Normal
  04/14/2026 03 AM PDT            6.60           1611         -              Normal
  04/14/2026 04 AM PDT            6.55           1588         -              Normal
  04/14/2026 05 AM PDT            6.49           1561         -              Normal
  04/14/2026 06 AM PDT            6.44           1538         -              Normal
  04/14/2026 07 AM PDT            6.39           1516         -              Normal
  04/14/2026 08 AM PDT            6.34           1494         -              Normal
  04/14/2026 09 AM PDT            6.29           1472         -              Normal
  04/14/2026 10 AM PDT            6.23           1445         -              Normal
  04/14/2026 11 AM PDT            6.19           1428         -              Normal
  04/14/2026 12 PM PDT            6.15           1410         -              Normal
  04/14/2026 01 PM PDT            6.10           1389         -              Normal
  04/14/2026 02 PM PDT            6.06           1372         -              Normal
  04/14/2026 03 PM PDT            6.03           1359         -              Normal
  04/14/2026 04 PM PDT            5.99           1342         -              Normal
  04/14/2026 05 PM PDT            5.94           1321         -              Normal
  04/14/2026 06 PM PDT            5.92           1313         -              Normal
  04/14/2026 07 PM PDT            5.87           1292         -              Normal
  04/14/2026 08 PM PDT            5.82           1271         -              Normal
  04/14/2026 09 PM PDT            5.80           1263         -              Normal
  04/14/2026 10 PM PDT            5.76           1247         -              Normal
  04/14/2026 11 PM PDT            5.72           1230         -              Normal
  04/15/2026 12 AM PDT            5.68           1214         -              Normal
  04/15/2026 01 AM PDT            5.64           1198         -              Normal
  04/15/2026 02 AM PDT            5.62           1190         -              Normal
  04/15/2026 03 AM PDT            5.59           1178         -              Normal
  04/15/2026 04 AM PDT            5.56           1166         -              Normal
  04/15/2026 05 AM PDT            5.53           1155         -              Normal
  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            4.49            782         -              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  04/17/2026 08 AM PDT            4.48            779                        Normal
  04/17/2026 09 AM PDT            4.46            773         -              Normal
  04/17/2026 10 AM PDT            4.45            770         -              Normal
  04/17/2026 11 AM PDT            4.44            767         -              Normal
  04/17/2026 12 PM PDT            4.42            761         -              Normal
  04/17/2026 01 PM PDT            4.41            758         -              Normal
  04/17/2026 02 PM PDT            4.40            755         -              Normal
  04/17/2026 03 PM PDT            4.39            752         -              Normal
  04/17/2026 04 PM PDT            4.38            749         -              Normal
  04/17/2026 05 PM PDT            4.37            747         -              Normal
  04/17/2026 06 PM PDT            4.35            741         -              Normal
  04/17/2026 07 PM PDT            4.34            738         -              Normal
  04/17/2026 08 PM PDT            4.33            735         -              Normal
  04/17/2026 09 PM PDT            4.32            732         -              Normal
  04/17/2026 10 PM PDT            4.31            729         -              Normal
  04/17/2026 11 PM PDT            4.29            723         -              Normal
  04/18/2026 12 AM PDT            4.28            720         -              Normal
  04/18/2026 01 AM PDT            4.27            717         -              Normal
  04/18/2026 02 AM PDT            4.26            715         -              Normal
  04/18/2026 03 AM PDT            4.25            712         -              Normal
  04/18/2026 04 AM PDT            4.24            709         -              Normal
  04/18/2026 05 AM PDT            4.23            706         -              Normal
  04/18/2026 06 AM PDT            4.22            703         -              Normal
  04/18/2026 07 AM PDT            4.22            703         0              Normal
  04/18/2026 08 AM PDT            4.21            700         -              Normal
  04/18/2026 09 AM PDT            4.20            697         -              Normal
  04/18/2026 10 AM PDT            4.19            695         -              Normal
  04/18/2026 11 AM PDT            4.18            692         -              Normal
  04/18/2026 12 PM PDT            4.18            692         0              Normal
  04/18/2026 01 PM PDT            4.17            689         -              Normal
  04/18/2026 02 PM PDT            4.16            686         -              Normal
  04/18/2026 03 PM PDT            4.16            686         0              Normal
  04/18/2026 04 PM PDT            4.15            683         -              Normal
  04/18/2026 05 PM PDT            4.14            680         -              Normal
  04/18/2026 06 PM PDT            4.13            678         -              Normal
  04/18/2026 07 PM PDT            4.12            675         -              Normal
  04/18/2026 08 PM PDT            4.12            675         0              Normal
  04/18/2026 09 PM PDT            4.11            672         -              Normal
  04/18/2026 10 PM PDT            4.10            669         -              Normal
  04/18/2026 11 PM PDT            4.10            669         0              Normal
  04/19/2026 12 AM PDT            4.09            666         -              Normal
  04/19/2026 01 AM PDT            4.09            666         0              Normal
  04/19/2026 02 AM PDT            4.08            664         -              Normal
  04/19/2026 03 AM PDT            4.08            664         0              Normal
  04/19/2026 04 AM PDT            4.07            661         -              Normal
  04/19/2026 05 AM PDT            4.06            658         -              Normal
  04/19/2026 06 AM PDT            4.06            658         0              Normal
  04/19/2026 07 AM PDT            4.05            655         -              Normal
  04/19/2026 08 AM PDT            4.05            655         0              Normal
  04/19/2026 09 AM PDT            4.04            653         -              Normal
  04/19/2026 10 AM PDT            4.04            653         0              Normal
  04/19/2026 11 AM PDT            4.03            650         -              Normal
  04/19/2026 12 PM PDT            4.03            650         0              Normal
  04/19/2026 01 PM PDT            4.02            647         -              Normal
  04/19/2026 02 PM PDT            4.02            647         0              Normal
  04/19/2026 03 PM PDT            4.01            644         -              Normal
  04/19/2026 04 PM PDT            4.01            644         0              Normal
  04/19/2026 05 PM PDT            4.00            642         -              Normal
  04/19/2026 06 PM PDT            3.99            639         -              Normal
  04/19/2026 07 PM PDT            3.99            639         0              Normal
  04/19/2026 08 PM PDT            3.98            636         -              Normal
  04/19/2026 09 PM PDT            3.98            636         0              Normal
  04/19/2026 10 PM PDT            3.97            633         -              Normal
  04/19/2026 11 PM PDT            3.97            633         0              Normal
  04/20/2026 12 AM PDT            3.96            631         -              Normal
  04/20/2026 01 AM PDT            3.96            631         0              Normal
  04/20/2026 02 AM PDT            3.96            631         0              Normal
  04/20/2026 03 AM PDT            3.95            628         -              Normal
  04/20/2026 04 AM PDT            3.95            628         0              Normal
  04/20/2026 05 AM PDT            3.94            625         -              Normal
  04/20/2026 06 AM PDT            3.94            625         0              Normal
  04/20/2026 07 AM PDT            3.94            625         0              Normal
  04/20/2026 08 AM PDT            3.93            623         -              Normal
  04/20/2026 09 AM PDT            3.93            623         0              Normal
  04/20/2026 10 AM PDT            3.92            620         -              Normal
  04/20/2026 11 AM PDT            3.92            620         0              Normal
  04/20/2026 12 PM PDT            3.92            620         0              Normal
  04/20/2026 01 PM PDT            3.92            620         0              Normal
  04/20/2026 02 PM PDT            3.92            620         0              Normal
  04/20/2026 03 PM PDT            3.92            620         0              Normal
  04/20/2026 04 PM PDT            3.93            623         +              Normal
  04/20/2026 05 PM PDT            3.93            623         0              Normal
  04/20/2026 06 PM PDT            3.93            623         0              Normal
  04/20/2026 07 PM PDT            3.93            623         0              Normal
  04/20/2026 08 PM PDT            3.94            625         +              Normal
  04/20/2026 09 PM PDT            3.94            625         0              Normal
  04/20/2026 10 PM PDT            3.95            628         +              Normal
  04/20/2026 11 PM PDT            3.96            631         +              Normal
  04/21/2026 12 AM PDT            3.97            633         +              Normal
  04/21/2026 01 AM PDT            3.98            636         +              Normal
  04/21/2026 02 AM PDT            3.99            639         +              Normal
  04/21/2026 03 AM PDT            4.00            642         +              Normal
  04/21/2026 04 AM PDT            4.01            644         +              Normal
  04/21/2026 05 AM PDT            4.02            647         +              Normal
  04/21/2026 06 AM PDT            4.04            653         +              Normal
  04/21/2026 07 AM PDT            4.07            661         +              Normal
  04/21/2026 08 AM PDT            4.11            672         +              Normal
  04/21/2026 09 AM PDT            4.15            683         +              Normal
  04/21/2026 10 AM PDT            4.19            695         +              Normal
  04/21/2026 11 AM PDT            4.24            709         +              Normal
  04/21/2026 12 PM PDT            4.29            723         +              Normal
  04/21/2026 01 PM PDT            4.34            738         +              Normal
  04/21/2026 02 PM PDT            4.41            758         +              Normal
  04/21/2026 03 PM PDT            4.50            785         +              Normal
  04/21/2026 04 PM PDT            4.64            830         +              Normal
  04/21/2026 05 PM PDT            4.83            895         +              Normal
  04/21/2026 06 PM PDT            5.08            984         +              Normal
  04/21/2026 07 PM PDT            5.36           1089         +              Normal
  04/21/2026 08 PM PDT            5.64           1198         +              Normal
  04/21/2026 09 PM PDT            5.89           1300         +              Normal
  04/21/2026 10 PM PDT            6.12           1398         +              Normal
  04/21/2026 11 PM PDT            6.33           1489         +              Normal
  04/22/2026 12 AM PDT            6.55           1588         +              Normal
  04/22/2026 01 AM PDT            6.79           1700         +              Normal
  04/22/2026 02 AM PDT            7.03           1815         +              Normal
  04/22/2026 03 AM PDT            7.26           1928         +              Normal
  04/22/2026 04 AM PDT            7.47           2034         +              Normal
  04/22/2026 05 AM PDT            7.67           2138         +              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.