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RUSSIAN RIVER - HACIENDA BRIDGE (RIOC1)
| Latitude: 38.51º N | Longitude: 122.93º W | Elevation: 20 Feet | | Forecast Type: Unofficial Location |
| Location: Sonoma County in California | Bulletin Group: Russian Napa | River Group: Russian Napa |
| Issuance Time: | Jul 30 2026 at 6:23 AM PDT | Next Issuance: | Jul 31 2026 at 9:00 AM PDT
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| Action/Monitor: 31.0 Feet | Minor Flood: 34.0 Feet | Moderate Flood: N/A | Major Flood: N/A |
# Tabular Observed and Forecast Hydrograph Information
#
# Location: Russian River - Hacienda Bridge (RIOC1)
#
# File Generation Time: 07/30/2026 at 06:24 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 07/28/2026 at 03:00 PM PDT
# Maximum Observed Stage: 1.41 Feet
# Maximum Observed Flow: 137 cfs
#
# Earliest Date & Time of Maximum Forecast: 07/30/2026 at 07:00 AM PDT
# Maximum Forecast Stage: 1.28 Feet
# Maximum Forecast Flow: 123 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
07/25/2026 06 AM PDT 1.24 118 Normal
07/25/2026 07 AM PDT 1.25 119 + Normal
07/25/2026 08 AM PDT 1.25 119 0 Normal
07/25/2026 09 AM PDT 1.25 119 0 Normal
07/25/2026 10 AM PDT 1.25 119 0 Normal
07/25/2026 11 AM PDT 1.25 119 0 Normal
07/25/2026 12 PM PDT 1.24 118 - Normal
07/25/2026 01 PM PDT 1.25 119 + Normal
07/25/2026 02 PM PDT 1.25 119 0 Normal
07/25/2026 03 PM PDT 1.26 121 + Normal
07/25/2026 04 PM PDT 1.26 121 0 Normal
07/25/2026 05 PM PDT 1.25 119 - Normal
07/25/2026 06 PM PDT 1.24 118 - Normal
07/25/2026 07 PM PDT 1.24 118 0 Normal
07/25/2026 08 PM PDT 1.24 118 0 Normal
07/25/2026 09 PM PDT 1.24 118 0 Normal
07/25/2026 10 PM PDT 1.24 118 0 Normal
07/25/2026 11 PM PDT 1.24 118 0 Normal
07/26/2026 12 AM PDT 1.24 118 0 Normal
07/26/2026 01 AM PDT 1.24 118 0 Normal
07/26/2026 02 AM PDT 1.25 119 + Normal
07/26/2026 03 AM PDT 1.25 119 0 Normal
07/26/2026 04 AM PDT 1.25 119 0 Normal
07/26/2026 05 AM PDT 1.25 119 0 Normal
07/26/2026 06 AM PDT 1.26 121 + Normal
07/26/2026 07 AM PDT 1.26 121 0 Normal
07/26/2026 08 AM PDT 1.26 121 0 Normal
07/26/2026 09 AM PDT 1.27 122 + Normal
07/26/2026 10 AM PDT 1.28 123 + Normal
07/26/2026 11 AM PDT 1.28 123 0 Normal
07/26/2026 12 PM PDT 1.28 123 0 Normal
07/26/2026 01 PM PDT 1.28 123 0 Normal
07/26/2026 02 PM PDT 1.29 124 + Normal
07/26/2026 03 PM PDT 1.29 124 0 Normal
07/26/2026 04 PM PDT 1.30 125 + Normal
07/26/2026 05 PM PDT 1.30 125 0 Normal
07/26/2026 06 PM PDT 1.30 125 0 Normal
07/26/2026 07 PM PDT 1.30 125 0 Normal
07/26/2026 08 PM PDT 1.30 125 0 Normal
07/26/2026 09 PM PDT 1.30 125 0 Normal
07/26/2026 10 PM PDT 1.30 125 0 Normal
07/26/2026 11 PM PDT 1.30 125 0 Normal
07/27/2026 12 AM PDT 1.30 125 0 Normal
07/27/2026 01 AM PDT 1.31 126 + Normal
07/27/2026 02 AM PDT 1.31 126 0 Normal
07/27/2026 03 AM PDT 1.31 126 0 Normal
07/27/2026 04 AM PDT 1.31 126 0 Normal
07/27/2026 05 AM PDT 1.32 127 + Normal
07/27/2026 06 AM PDT 1.32 127 0 Normal
07/27/2026 07 AM PDT 1.33 128 + Normal
07/27/2026 08 AM PDT 1.33 128 0 Normal
07/27/2026 09 AM PDT 1.33 128 0 Normal
07/27/2026 10 AM PDT 1.34 129 + Normal
07/27/2026 11 AM PDT 1.34 129 0 Normal
07/27/2026 12 PM PDT 1.34 129 0 Normal
07/27/2026 01 PM PDT 1.34 129 0 Normal
07/27/2026 02 PM PDT 1.35 130 + Normal
07/27/2026 03 PM PDT 1.35 130 0 Normal
07/27/2026 04 PM PDT 1.35 130 0 Normal
07/27/2026 05 PM PDT 1.35 130 0 Normal
07/27/2026 06 PM PDT 1.35 130 0 Normal
07/27/2026 07 PM PDT 1.34 129 - Normal
07/27/2026 08 PM PDT 1.34 129 0 Normal
07/27/2026 09 PM PDT 1.34 129 0 Normal
07/27/2026 10 PM PDT 1.33 128 - Normal
07/27/2026 11 PM PDT 1.33 128 0 Normal
07/28/2026 12 AM PDT 1.33 128 0 Normal
07/28/2026 01 AM PDT 1.33 128 0 Normal
07/28/2026 02 AM PDT 1.33 128 0 Normal
07/28/2026 03 AM PDT 1.34 129 + Normal
07/28/2026 04 AM PDT 1.34 129 0 Normal
07/28/2026 05 AM PDT 1.34 129 0 Normal
07/28/2026 06 AM PDT 1.34 129 0 Normal
07/28/2026 07 AM PDT 1.34 129 0 Normal
07/28/2026 08 AM PDT 1.34 129 0 Normal
07/28/2026 09 AM PDT 1.34 129 0 Normal
07/28/2026 10 AM PDT 1.35 130 + Normal
07/28/2026 11 AM PDT 1.36 131 + Normal
07/28/2026 12 PM PDT 1.39 135 + Normal
07/28/2026 01 PM PDT 1.41 137 + Normal
07/28/2026 02 PM PDT 1.41 137 0 Normal
07/28/2026 03 PM PDT 1.41 137 0 Normal
07/28/2026 04 PM PDT 1.39 135 - Normal
07/28/2026 05 PM PDT 1.36 131 - Normal
07/28/2026 06 PM PDT 1.35 130 - Normal
07/28/2026 07 PM PDT 1.34 129 - Normal
07/28/2026 08 PM PDT 1.33 128 - Normal
07/28/2026 09 PM PDT 1.32 127 - Normal
07/28/2026 10 PM PDT 1.32 127 0 Normal
07/28/2026 11 PM PDT 1.31 126 - Normal
07/29/2026 12 AM PDT 1.31 126 0 Normal
07/29/2026 01 AM PDT 1.31 126 0 Normal
07/29/2026 02 AM PDT 1.30 125 - Normal
07/29/2026 03 AM PDT 1.30 125 0 Normal
07/29/2026 04 AM PDT 1.30 125 0 Normal
07/29/2026 05 AM PDT 1.30 125 0 Normal
07/29/2026 06 AM PDT 1.30 125 0 Normal
07/29/2026 07 AM PDT 1.30 125 0 Normal
07/29/2026 08 AM PDT 1.30 125 0 Normal
07/29/2026 09 AM PDT 1.30 125 0 Normal
07/29/2026 10 AM PDT 1.30 125 0 Normal
07/29/2026 11 AM PDT 1.30 125 0 Normal
07/29/2026 12 PM PDT 1.30 125 0 Normal
07/29/2026 01 PM PDT 1.30 125 0 Normal
07/29/2026 02 PM PDT 1.30 125 0 Normal
07/29/2026 03 PM PDT 1.30 125 0 Normal
07/29/2026 04 PM PDT 1.28 123 - Normal
07/29/2026 05 PM PDT 1.29 124 + Normal
07/29/2026 06 PM PDT 1.29 124 0 Normal
07/29/2026 07 PM PDT 1.29 124 0 Normal
07/29/2026 08 PM PDT 1.29 124 0 Normal
07/29/2026 09 PM PDT 1.28 123 - Normal
07/29/2026 10 PM PDT 1.28 123 0 Normal
07/29/2026 11 PM PDT 1.28 123 0 Normal
07/30/2026 12 AM PDT 1.28 123 0 Normal
07/30/2026 01 AM PDT 1.28 123 0 Normal
07/30/2026 02 AM PDT 1.28 123 0 Normal
07/30/2026 03 AM PDT 1.28 123 0 Normal
07/30/2026 04 AM PDT 1.28 123 0 Normal
07/30/2026 05 AM PDT 1.28 123 0 Normal
07/30/2026 06 AM PDT 1.28 123 0 Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
07/30/2026 07 AM PDT 1.28 123 Normal
07/30/2026 08 AM PDT 1.27 122 - Normal
07/30/2026 09 AM PDT 1.27 122 0 Normal
07/30/2026 10 AM PDT 1.27 122 0 Normal
07/30/2026 11 AM PDT 1.27 122 0 Normal
07/30/2026 12 PM PDT 1.26 121 - Normal
07/30/2026 01 PM PDT 1.26 121 0 Normal
07/30/2026 02 PM PDT 1.25 119 - Normal
07/30/2026 03 PM PDT 1.25 119 0 Normal
07/30/2026 04 PM PDT 1.25 119 0 Normal
07/30/2026 05 PM PDT 1.25 119 0 Normal
07/30/2026 06 PM PDT 1.24 118 - Normal
07/30/2026 07 PM PDT 1.24 118 0 Normal
07/30/2026 08 PM PDT 1.24 118 0 Normal
07/30/2026 09 PM PDT 1.23 117 - Normal
07/30/2026 10 PM PDT 1.23 117 0 Normal
07/30/2026 11 PM PDT 1.23 117 0 Normal
07/31/2026 12 AM PDT 1.23 117 0 Normal
07/31/2026 01 AM PDT 1.22 116 - Normal
07/31/2026 02 AM PDT 1.22 116 0 Normal
07/31/2026 03 AM PDT 1.22 116 0 Normal
07/31/2026 04 AM PDT 1.22 116 0 Normal
07/31/2026 05 AM PDT 1.22 116 0 Normal
07/31/2026 06 AM PDT 1.22 116 0 Normal
07/31/2026 07 AM PDT 1.22 116 0 Normal
07/31/2026 08 AM PDT 1.22 116 0 Normal
07/31/2026 09 AM PDT 1.22 116 0 Normal
07/31/2026 10 AM PDT 1.22 116 0 Normal
07/31/2026 11 AM PDT 1.22 116 0 Normal
07/31/2026 12 PM PDT 1.22 116 0 Normal
07/31/2026 01 PM PDT 1.22 116 0 Normal
07/31/2026 02 PM PDT 1.22 116 0 Normal
07/31/2026 03 PM PDT 1.22 116 0 Normal
07/31/2026 04 PM PDT 1.22 116 0 Normal
07/31/2026 05 PM PDT 1.22 116 0 Normal
07/31/2026 06 PM PDT 1.23 117 + Normal
07/31/2026 07 PM PDT 1.23 117 0 Normal
07/31/2026 08 PM PDT 1.23 117 0 Normal
07/31/2026 09 PM PDT 1.23 117 0 Normal
07/31/2026 10 PM PDT 1.23 117 0 Normal
07/31/2026 11 PM PDT 1.24 118 + Normal
08/01/2026 12 AM PDT 1.24 118 0 Normal
08/01/2026 01 AM PDT 1.24 118 0 Normal
08/01/2026 02 AM PDT 1.24 118 0 Normal
08/01/2026 03 AM PDT 1.24 118 0 Normal
08/01/2026 04 AM PDT 1.25 119 + Normal
08/01/2026 05 AM PDT 1.25 119 0 Normal
08/01/2026 06 AM PDT 1.25 119 0 Normal
08/01/2026 07 AM PDT 1.25 119 0 Normal
08/01/2026 08 AM PDT 1.25 119 0 Normal
08/01/2026 09 AM PDT 1.25 119 0 Normal
08/01/2026 10 AM PDT 1.25 119 0 Normal
08/01/2026 11 AM PDT 1.25 119 0 Normal
08/01/2026 12 PM PDT 1.25 119 0 Normal
08/01/2026 01 PM PDT 1.26 121 + Normal
08/01/2026 02 PM PDT 1.26 121 0 Normal
08/01/2026 03 PM PDT 1.26 121 0 Normal
08/01/2026 04 PM PDT 1.26 121 0 Normal
08/01/2026 05 PM PDT 1.26 121 0 Normal
08/01/2026 06 PM PDT 1.26 121 0 Normal
08/01/2026 07 PM PDT 1.26 121 0 Normal
08/01/2026 08 PM PDT 1.26 121 0 Normal
08/01/2026 09 PM PDT 1.26 121 0 Normal
08/01/2026 10 PM PDT 1.26 121 0 Normal
08/01/2026 11 PM PDT 1.26 121 0 Normal
08/02/2026 12 AM PDT 1.26 121 0 Normal
08/02/2026 01 AM PDT 1.26 121 0 Normal
08/02/2026 02 AM PDT 1.26 121 0 Normal
08/02/2026 03 AM PDT 1.26 121 0 Normal
08/02/2026 04 AM PDT 1.26 121 0 Normal
08/02/2026 05 AM PDT 1.26 121 0 Normal
08/02/2026 06 AM PDT 1.26 121 0 Normal
08/02/2026 07 AM PDT 1.26 121 0 Normal
08/02/2026 08 AM PDT 1.26 121 0 Normal
08/02/2026 09 AM PDT 1.26 121 0 Normal
08/02/2026 10 AM PDT 1.26 121 0 Normal
08/02/2026 11 AM PDT 1.26 121 0 Normal
08/02/2026 12 PM PDT 1.26 121 0 Normal
08/02/2026 01 PM PDT 1.26 121 0 Normal
08/02/2026 02 PM PDT 1.26 121 0 Normal
08/02/2026 03 PM PDT 1.26 121 0 Normal
08/02/2026 04 PM PDT 1.26 121 0 Normal
08/02/2026 05 PM PDT 1.26 121 0 Normal
08/02/2026 06 PM PDT 1.26 121 0 Normal
08/02/2026 07 PM PDT 1.26 121 0 Normal
08/02/2026 08 PM PDT 1.25 119 - Normal
08/02/2026 09 PM PDT 1.25 119 0 Normal
08/02/2026 10 PM PDT 1.25 119 0 Normal
08/02/2026 11 PM PDT 1.25 119 0 Normal
08/03/2026 12 AM PDT 1.25 119 0 Normal
08/03/2026 01 AM PDT 1.25 119 0 Normal
08/03/2026 02 AM PDT 1.25 119 0 Normal
08/03/2026 03 AM PDT 1.25 119 0 Normal
08/03/2026 04 AM PDT 1.25 119 0 Normal
08/03/2026 05 AM PDT 1.25 119 0 Normal
08/03/2026 06 AM PDT 1.25 119 0 Normal
08/03/2026 07 AM PDT 1.25 119 0 Normal
08/03/2026 08 AM PDT 1.25 119 0 Normal
08/03/2026 09 AM PDT 1.25 119 0 Normal
08/03/2026 10 AM PDT 1.25 119 0 Normal
08/03/2026 11 AM PDT 1.25 119 0 Normal
08/03/2026 12 PM PDT 1.25 119 0 Normal
08/03/2026 01 PM PDT 1.25 119 0 Normal
08/03/2026 02 PM PDT 1.25 119 0 Normal
08/03/2026 03 PM PDT 1.25 119 0 Normal
08/03/2026 04 PM PDT 1.25 119 0 Normal
08/03/2026 05 PM PDT 1.25 119 0 Normal
08/03/2026 06 PM PDT 1.25 119 0 Normal
08/03/2026 07 PM PDT 1.25 119 0 Normal
08/03/2026 08 PM PDT 1.25 119 0 Normal
08/03/2026 09 PM PDT 1.25 119 0 Normal
08/03/2026 10 PM PDT 1.25 119 0 Normal
08/03/2026 11 PM PDT 1.25 119 0 Normal
08/04/2026 12 AM PDT 1.25 119 0 Normal
08/04/2026 01 AM PDT 1.25 119 0 Normal
08/04/2026 02 AM PDT 1.25 119 0 Normal
08/04/2026 03 AM PDT 1.25 119 0 Normal
08/04/2026 04 AM PDT 1.25 119 0 Normal
08/04/2026 05 AM PDT 1.25 119 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.
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