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RUSSIAN RIVER - HOPLAND (HOPC1)
| Latitude: 39.03º N | Longitude: 123.13º W | Elevation: 498 Feet | | Forecast Type: Official Location |
| Location: Mendocino County in California | Bulletin Group: Russian Napa | River Group: Russian Napa |
| Issuance Time: | Oct 18 2026 at 7:20 AM PDT | Next Issuance: | Oct 19 2026 at 9:00 AM PDT
| |
| Action: N/A | Minor Flood: 15.0 Feet | Moderate Flood: 23.0 Feet | Major Flood: 26.0 Feet |
# Tabular Observed and Forecast Hydrograph Information
#
# Location: Russian River - Hopland (HOPC1)
#
# File Generation Time: 10/18/2026 at 07:20 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 10/18/2026 at 03:00 AM PDT
# Maximum Observed Stage: 1.23 Feet
# Maximum Observed Flow: 213 cfs
#
# Earliest Date & Time of Maximum Forecast: 10/19/2026 at 09:00 PM PDT
# Maximum Forecast Stage: 1.25 Feet
# Maximum Forecast Flow: 217 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
10/13/2026 07 AM PDT 1.05 179 Normal
10/13/2026 08 AM PDT 1.05 179 0 Normal
10/13/2026 09 AM PDT 1.04 177 - Normal
10/13/2026 10 AM PDT 1.04 177 0 Normal
10/13/2026 11 AM PDT 1.04 177 0 Normal
10/13/2026 12 PM PDT 1.04 177 0 Normal
10/13/2026 01 PM PDT 1.03 175 - Normal
10/13/2026 02 PM PDT 1.03 175 0 Normal
10/13/2026 03 PM PDT 1.04 177 + Normal
10/13/2026 04 PM PDT 1.05 179 + Normal
10/13/2026 05 PM PDT 1.07 183 + Normal
10/13/2026 06 PM PDT 1.07 183 0 Normal
10/13/2026 07 PM PDT 1.07 183 0 Normal
10/13/2026 08 PM PDT 1.08 185 + Normal
10/13/2026 09 PM PDT 1.08 185 0 Normal
10/13/2026 10 PM PDT 1.08 185 0 Normal
10/13/2026 11 PM PDT 1.08 185 0 Normal
10/14/2026 12 AM PDT 1.09 186 + Normal
10/14/2026 01 AM PDT 1.09 186 0 Normal
10/14/2026 02 AM PDT 1.09 186 0 Normal
10/14/2026 03 AM PDT 1.08 185 - Normal
10/14/2026 04 AM PDT 1.09 186 + Normal
10/14/2026 05 AM PDT 1.09 186 0 Normal
10/14/2026 06 AM PDT 1.09 186 0 Normal
10/14/2026 07 AM PDT 1.09 186 0 Normal
10/14/2026 08 AM PDT 1.09 186 0 Normal
10/14/2026 09 AM PDT 1.09 186 0 Normal
10/14/2026 10 AM PDT 1.09 186 0 Normal
10/14/2026 11 AM PDT 1.08 185 - Normal
10/14/2026 12 PM PDT 1.07 183 - Normal
10/14/2026 01 PM PDT 1.06 181 - Normal
10/14/2026 02 PM PDT 1.07 183 + Normal
10/14/2026 03 PM PDT 1.08 185 + Normal
10/14/2026 04 PM PDT 1.11 190 + Normal
10/14/2026 05 PM PDT 1.13 194 + Normal
10/14/2026 06 PM PDT 1.13 194 0 Normal
10/14/2026 07 PM PDT 1.14 196 + Normal
10/14/2026 08 PM PDT 1.14 196 0 Normal
10/14/2026 09 PM PDT 1.14 196 0 Normal
10/14/2026 10 PM PDT 1.14 196 0 Normal
10/14/2026 11 PM PDT 1.15 198 + Normal
10/15/2026 12 AM PDT 1.15 198 0 Normal
10/15/2026 01 AM PDT 1.15 198 0 Normal
10/15/2026 02 AM PDT 1.15 198 0 Normal
10/15/2026 03 AM PDT 1.15 198 0 Normal
10/15/2026 04 AM PDT 1.15 198 0 Normal
10/15/2026 05 AM PDT 1.15 198 0 Normal
10/15/2026 06 AM PDT 1.15 198 0 Normal
10/15/2026 07 AM PDT 1.15 198 0 Normal
10/15/2026 08 AM PDT 1.15 198 0 Normal
10/15/2026 09 AM PDT 1.15 198 0 Normal
10/15/2026 10 AM PDT 1.14 196 - Normal
10/15/2026 11 AM PDT 1.13 194 - Normal
10/15/2026 12 PM PDT 1.11 190 - Normal
10/15/2026 01 PM PDT 1.10 188 - Normal
10/15/2026 02 PM PDT 1.09 186 - Normal
10/15/2026 03 PM PDT 1.09 186 0 Normal
10/15/2026 04 PM PDT 1.10 188 + Normal
10/15/2026 05 PM PDT 1.12 192 + Normal
10/15/2026 06 PM PDT 1.13 194 + Normal
10/15/2026 07 PM PDT 1.14 196 + Normal
10/15/2026 08 PM PDT 1.14 196 0 Normal
10/15/2026 09 PM PDT 1.15 198 + Normal
10/15/2026 10 PM PDT 1.14 196 - Normal
10/15/2026 11 PM PDT 1.15 198 + Normal
10/16/2026 12 AM PDT 1.15 198 0 Normal
10/16/2026 01 AM PDT 1.16 200 + Normal
10/16/2026 02 AM PDT 1.16 200 0 Normal
10/16/2026 03 AM PDT 1.15 198 - Normal
10/16/2026 04 AM PDT 1.15 198 0 Normal
10/16/2026 05 AM PDT 1.15 198 0 Normal
10/16/2026 06 AM PDT 1.16 200 + Normal
10/16/2026 07 AM PDT 1.15 198 - Normal
10/16/2026 08 AM PDT 1.16 200 + Normal
10/16/2026 09 AM PDT 1.15 198 - Normal
10/16/2026 10 AM PDT 1.15 198 0 Normal
10/16/2026 11 AM PDT 1.15 198 0 Normal
10/16/2026 12 PM PDT 1.15 198 0 Normal
10/16/2026 01 PM PDT 1.14 196 - Normal
10/16/2026 02 PM PDT 1.14 196 0 Normal
10/16/2026 03 PM PDT 1.14 196 0 Normal
10/16/2026 04 PM PDT 1.14 196 0 Normal
10/16/2026 05 PM PDT 1.14 196 0 Normal
10/16/2026 06 PM PDT 1.14 196 0 Normal
10/16/2026 07 PM PDT 1.14 196 0 Normal
10/16/2026 08 PM PDT 1.14 196 0 Normal
10/16/2026 09 PM PDT 1.15 198 + Normal
10/16/2026 10 PM PDT 1.18 204 + Normal
10/16/2026 11 PM PDT 1.20 207 + Normal
10/17/2026 12 AM PDT 1.22 211 + Normal
10/17/2026 01 AM PDT 1.22 211 0 Normal
10/17/2026 02 AM PDT 1.22 211 0 Normal
10/17/2026 03 AM PDT 1.21 209 - Normal
10/17/2026 04 AM PDT 1.21 209 0 Normal
10/17/2026 05 AM PDT 1.22 211 + Normal
10/17/2026 06 AM PDT 1.22 211 0 Normal
10/17/2026 07 AM PDT 1.22 211 0 Normal
10/17/2026 08 AM PDT 1.22 211 0 Normal
10/17/2026 09 AM PDT 1.22 211 0 Normal
10/17/2026 10 AM PDT 1.22 211 0 Normal
10/17/2026 11 AM PDT 1.22 211 0 Normal
10/17/2026 12 PM PDT 1.21 209 - Normal
10/17/2026 01 PM PDT 1.21 209 0 Normal
10/17/2026 02 PM PDT 1.21 209 0 Normal
10/17/2026 03 PM PDT 1.21 209 0 Normal
10/17/2026 04 PM PDT 1.21 209 0 Normal
10/17/2026 05 PM PDT 1.21 209 0 Normal
10/17/2026 06 PM PDT 1.22 211 + Normal
10/17/2026 07 PM PDT 1.21 209 - Normal
10/17/2026 08 PM PDT 1.22 211 + Normal
10/17/2026 09 PM PDT 1.22 211 0 Normal
10/17/2026 10 PM PDT 1.22 211 0 Normal
10/17/2026 11 PM PDT 1.23 213 + Normal
10/18/2026 12 AM PDT 1.23 213 0 Normal
10/18/2026 01 AM PDT 1.23 213 0 Normal
10/18/2026 02 AM PDT 1.23 213 0 Normal
10/18/2026 03 AM PDT 1.23 213 0 Normal
10/18/2026 04 AM PDT 1.22 211 - Normal
10/18/2026 05 AM PDT 1.22 211 0 Normal
10/18/2026 06 AM PDT 1.22 211 0 Normal
10/18/2026 07 AM PDT 1.22 211 0 Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
10/18/2026 08 AM PDT 1.22 211 Normal
10/18/2026 09 AM PDT 1.22 211 0 Normal
10/18/2026 10 AM PDT 1.22 211 0 Normal
10/18/2026 11 AM PDT 1.22 211 0 Normal
10/18/2026 12 PM PDT 1.22 211 0 Normal
10/18/2026 01 PM PDT 1.22 211 0 Normal
10/18/2026 02 PM PDT 1.22 211 0 Normal
10/18/2026 03 PM PDT 1.22 211 0 Normal
10/18/2026 04 PM PDT 1.22 211 0 Normal
10/18/2026 05 PM PDT 1.22 211 0 Normal
10/18/2026 06 PM PDT 1.22 211 0 Normal
10/18/2026 07 PM PDT 1.22 211 0 Normal
10/18/2026 08 PM PDT 1.22 211 0 Normal
10/18/2026 09 PM PDT 1.22 211 0 Normal
10/18/2026 10 PM PDT 1.22 211 0 Normal
10/18/2026 11 PM PDT 1.22 211 0 Normal
10/19/2026 12 AM PDT 1.22 211 0 Normal
10/19/2026 01 AM PDT 1.22 211 0 Normal
10/19/2026 02 AM PDT 1.22 211 0 Normal
10/19/2026 03 AM PDT 1.22 211 0 Normal
10/19/2026 04 AM PDT 1.22 211 0 Normal
10/19/2026 05 AM PDT 1.22 211 0 Normal
10/19/2026 06 AM PDT 1.22 211 0 Normal
10/19/2026 07 AM PDT 1.22 211 0 Normal
10/19/2026 08 AM PDT 1.22 211 0 Normal
10/19/2026 09 AM PDT 1.22 211 0 Normal
10/19/2026 10 AM PDT 1.22 211 0 Normal
10/19/2026 11 AM PDT 1.22 211 0 Normal
10/19/2026 12 PM PDT 1.22 211 0 Normal
10/19/2026 01 PM PDT 1.22 211 0 Normal
10/19/2026 02 PM PDT 1.22 211 0 Normal
10/19/2026 03 PM PDT 1.22 211 0 Normal
10/19/2026 04 PM PDT 1.22 211 0 Normal
10/19/2026 05 PM PDT 1.22 211 0 Normal
10/19/2026 06 PM PDT 1.23 213 + Normal
10/19/2026 07 PM PDT 1.24 215 + Normal
10/19/2026 08 PM PDT 1.24 215 0 Normal
10/19/2026 09 PM PDT 1.25 217 + Normal
10/19/2026 10 PM PDT 1.25 217 0 Normal
10/19/2026 11 PM PDT 1.25 217 0 Normal
10/20/2026 12 AM PDT 1.25 217 0 Normal
10/20/2026 01 AM PDT 1.25 217 0 Normal
10/20/2026 02 AM PDT 1.25 217 0 Normal
10/20/2026 03 AM PDT 1.25 217 0 Normal
10/20/2026 04 AM PDT 1.25 217 0 Normal
10/20/2026 05 AM PDT 1.25 217 0 Normal
10/20/2026 06 AM PDT 1.24 215 - Normal
10/20/2026 07 AM PDT 1.24 215 0 Normal
10/20/2026 08 AM PDT 1.24 215 0 Normal
10/20/2026 09 AM PDT 1.24 215 0 Normal
10/20/2026 10 AM PDT 1.24 215 0 Normal
10/20/2026 11 AM PDT 1.23 213 - Normal
10/20/2026 12 PM PDT 1.23 213 0 Normal
10/20/2026 01 PM PDT 1.23 213 0 Normal
10/20/2026 02 PM PDT 1.23 213 0 Normal
10/20/2026 03 PM PDT 1.23 213 0 Normal
10/20/2026 04 PM PDT 1.23 213 0 Normal
10/20/2026 05 PM PDT 1.23 213 0 Normal
10/20/2026 06 PM PDT 1.23 213 0 Normal
10/20/2026 07 PM PDT 1.23 213 0 Normal
10/20/2026 08 PM PDT 1.23 213 0 Normal
10/20/2026 09 PM PDT 1.23 213 0 Normal
10/20/2026 10 PM PDT 1.23 213 0 Normal
10/20/2026 11 PM PDT 1.23 213 0 Normal
10/21/2026 12 AM PDT 1.23 213 0 Normal
10/21/2026 01 AM PDT 1.23 213 0 Normal
10/21/2026 02 AM PDT 1.23 213 0 Normal
10/21/2026 03 AM PDT 1.23 213 0 Normal
10/21/2026 04 AM PDT 1.23 213 0 Normal
10/21/2026 05 AM PDT 1.23 213 0 Normal
10/21/2026 06 AM PDT 1.23 213 0 Normal
10/21/2026 07 AM PDT 1.23 213 0 Normal
10/21/2026 08 AM PDT 1.23 213 0 Normal
10/21/2026 09 AM PDT 1.23 213 0 Normal
10/21/2026 10 AM PDT 1.23 213 0 Normal
10/21/2026 11 AM PDT 1.23 213 0 Normal
10/21/2026 12 PM PDT 1.23 213 0 Normal
10/21/2026 01 PM PDT 1.23 213 0 Normal
10/21/2026 02 PM PDT 1.23 213 0 Normal
10/21/2026 03 PM PDT 1.23 213 0 Normal
10/21/2026 04 PM PDT 1.23 213 0 Normal
10/21/2026 05 PM PDT 1.24 215 + Normal
10/21/2026 06 PM PDT 1.24 215 0 Normal
10/21/2026 07 PM PDT 1.24 215 0 Normal
10/21/2026 08 PM PDT 1.25 217 + Normal
10/21/2026 09 PM PDT 1.25 217 0 Normal
10/21/2026 10 PM PDT 1.25 217 0 Normal
10/21/2026 11 PM PDT 1.25 217 0 Normal
10/22/2026 12 AM PDT 1.25 217 0 Normal
10/22/2026 01 AM PDT 1.25 217 0 Normal
10/22/2026 02 AM PDT 1.25 217 0 Normal
10/22/2026 03 AM PDT 1.25 217 0 Normal
10/22/2026 04 AM PDT 1.25 217 0 Normal
10/22/2026 05 AM PDT 1.25 217 0 Normal
10/22/2026 06 AM PDT 1.25 217 0 Normal
10/22/2026 07 AM PDT 1.25 217 0 Normal
10/22/2026 08 AM PDT 1.25 217 0 Normal
10/22/2026 09 AM PDT 1.25 217 0 Normal
10/22/2026 10 AM PDT 1.25 217 0 Normal
10/22/2026 11 AM PDT 1.25 217 0 Normal
10/22/2026 12 PM PDT 1.25 217 0 Normal
10/22/2026 01 PM PDT 1.25 217 0 Normal
10/22/2026 02 PM PDT 1.25 217 0 Normal
10/22/2026 03 PM PDT 1.25 217 0 Normal
10/22/2026 04 PM PDT 1.25 217 0 Normal
10/22/2026 05 PM PDT 1.25 217 0 Normal
10/22/2026 06 PM PDT 1.25 217 0 Normal
10/22/2026 07 PM PDT 1.25 217 0 Normal
10/22/2026 08 PM PDT 1.25 217 0 Normal
10/22/2026 09 PM PDT 1.25 217 0 Normal
10/22/2026 10 PM PDT 1.24 215 - Normal
10/22/2026 11 PM PDT 1.24 215 0 Normal
10/23/2026 12 AM PDT 1.24 215 0 Normal
10/23/2026 01 AM PDT 1.24 215 0 Normal
10/23/2026 02 AM PDT 1.24 215 0 Normal
10/23/2026 03 AM PDT 1.24 215 0 Normal
10/23/2026 04 AM PDT 1.23 213 - Normal
10/23/2026 05 AM PDT 1.23 213 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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