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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: | Apr 21 2026 at 7:32 AM PDT | Next Issuance: | Apr 22 2026 at 9:00 AM PDT
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| Action/Monitor: 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: 04/21/2026 at 07:32 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 04/16/2026 at 07:00 AM PDT
# Maximum Observed Stage: 1.34 Feet
# Maximum Observed Flow: 235 cfs
#
# Earliest Date & Time of Maximum Forecast: 04/22/2026 at 12:00 PM PDT
# Maximum Forecast Stage: 1.59 Feet
# Maximum Forecast Flow: 287 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
04/16/2026 07 AM PDT 1.34 235 Normal
04/16/2026 08 AM PDT 1.32 231 - Normal
04/16/2026 09 AM PDT 1.30 227 - Normal
04/16/2026 10 AM PDT 1.29 225 - Normal
04/16/2026 11 AM PDT 1.28 223 - Normal
04/16/2026 12 PM PDT 1.27 221 - Normal
04/16/2026 01 PM PDT 1.24 215 - Normal
04/16/2026 02 PM PDT 1.23 213 - Normal
04/16/2026 03 PM PDT 1.22 211 - Normal
04/16/2026 04 PM PDT 1.22 211 0 Normal
04/16/2026 05 PM PDT 1.22 211 0 Normal
04/16/2026 06 PM PDT 1.22 211 0 Normal
04/16/2026 07 PM PDT 1.22 211 0 Normal
04/16/2026 08 PM PDT 1.22 211 0 Normal
04/16/2026 09 PM PDT 1.22 211 0 Normal
04/16/2026 10 PM PDT 1.22 211 0 Normal
04/16/2026 11 PM PDT 1.22 211 0 Normal
04/17/2026 12 AM PDT 1.21 209 - Normal
04/17/2026 01 AM PDT 1.21 209 0 Normal
04/17/2026 02 AM PDT 1.21 209 0 Normal
04/17/2026 03 AM PDT 1.21 209 0 Normal
04/17/2026 04 AM PDT 1.21 209 0 Normal
04/17/2026 05 AM PDT 1.20 207 - Normal
04/17/2026 06 AM PDT 1.20 207 0 Normal
04/17/2026 07 AM PDT 1.20 207 0 Normal
04/17/2026 08 AM PDT 1.17 202 - Normal
04/17/2026 09 AM PDT 1.15 198 - Normal
04/17/2026 10 AM PDT 1.14 196 - Normal
04/17/2026 11 AM PDT 1.14 196 0 Normal
04/17/2026 12 PM PDT 1.14 196 0 Normal
04/17/2026 01 PM PDT 1.13 194 - Normal
04/17/2026 02 PM PDT 1.12 192 - Normal
04/17/2026 03 PM PDT 1.11 190 - Normal
04/17/2026 04 PM PDT 1.10 188 - Normal
04/17/2026 05 PM PDT 1.10 188 0 Normal
04/17/2026 06 PM PDT 1.12 192 + Normal
04/17/2026 07 PM PDT 1.12 192 0 Normal
04/17/2026 08 PM PDT 1.11 190 - Normal
04/17/2026 09 PM PDT 1.10 188 - Normal
04/17/2026 10 PM PDT 1.08 185 - Normal
04/17/2026 11 PM PDT 1.07 183 - Normal
04/18/2026 12 AM PDT 1.07 183 0 Normal
04/18/2026 01 AM PDT 1.07 183 0 Normal
04/18/2026 02 AM PDT 1.06 181 - Normal
04/18/2026 03 AM PDT 1.06 181 0 Normal
04/18/2026 04 AM PDT 1.06 181 0 Normal
04/18/2026 05 AM PDT 1.06 181 0 Normal
04/18/2026 06 AM PDT 1.06 181 0 Normal
04/18/2026 07 AM PDT 1.06 181 0 Normal
04/18/2026 08 AM PDT 1.05 179 - Normal
04/18/2026 09 AM PDT 1.05 179 0 Normal
04/18/2026 10 AM PDT 1.06 181 + Normal
04/18/2026 11 AM PDT 1.05 179 - Normal
04/18/2026 12 PM PDT 1.05 179 0 Normal
04/18/2026 01 PM PDT 1.04 177 - Normal
04/18/2026 02 PM PDT 1.02 173 - Normal
04/18/2026 03 PM PDT 1.01 172 - Normal
04/18/2026 04 PM PDT 1.01 172 0 Normal
04/18/2026 05 PM PDT 1.01 172 0 Normal
04/18/2026 06 PM PDT 1.00 170 - Normal
04/18/2026 07 PM PDT 1.00 170 0 Normal
04/18/2026 08 PM PDT 0.99 168 - Normal
04/18/2026 09 PM PDT 0.98 166 - Normal
04/18/2026 10 PM PDT 0.96 163 - Normal
04/18/2026 11 PM PDT 0.96 163 0 Normal
04/19/2026 12 AM PDT 0.95 161 - Normal
04/19/2026 01 AM PDT 0.95 161 0 Normal
04/19/2026 02 AM PDT 0.95 161 0 Normal
04/19/2026 03 AM PDT 0.95 161 0 Normal
04/19/2026 04 AM PDT 0.95 161 0 Normal
04/19/2026 05 AM PDT 0.94 159 - Normal
04/19/2026 06 AM PDT 0.94 159 0 Normal
04/19/2026 07 AM PDT 0.94 159 0 Normal
04/19/2026 08 AM PDT 0.94 159 0 Normal
04/19/2026 09 AM PDT 0.94 159 0 Normal
04/19/2026 10 AM PDT 0.93 157 - Normal
04/19/2026 11 AM PDT 0.93 157 0 Normal
04/19/2026 12 PM PDT 0.92 155 - Normal
04/19/2026 01 PM PDT 0.93 157 + Normal
04/19/2026 02 PM PDT 0.92 155 - Normal
04/19/2026 03 PM PDT 0.92 155 0 Normal
04/19/2026 04 PM PDT 0.92 155 0 Normal
04/19/2026 05 PM PDT 0.92 155 0 Normal
04/19/2026 06 PM PDT 0.92 155 0 Normal
04/19/2026 07 PM PDT 0.91 154 - Normal
04/19/2026 08 PM PDT 0.91 154 0 Normal
04/19/2026 09 PM PDT 0.91 154 0 Normal
04/19/2026 10 PM PDT 0.91 154 0 Normal
04/19/2026 11 PM PDT 0.91 154 0 Normal
04/20/2026 12 AM PDT 0.91 154 0 Normal
04/20/2026 01 AM PDT 0.91 154 0 Normal
04/20/2026 02 AM PDT 0.90 152 - Normal
04/20/2026 03 AM PDT 0.90 152 0 Normal
04/20/2026 04 AM PDT 0.90 152 0 Normal
04/20/2026 05 AM PDT 0.90 152 0 Normal
04/20/2026 06 AM PDT 0.91 154 + Normal
04/20/2026 07 AM PDT 0.91 154 0 Normal
04/20/2026 08 AM PDT 0.91 154 0 Normal
04/20/2026 09 AM PDT 0.92 155 + Normal
04/20/2026 10 AM PDT 0.91 154 - Normal
04/20/2026 11 AM PDT 0.92 155 + Normal
04/20/2026 12 PM PDT 0.92 155 0 Normal
04/20/2026 01 PM PDT 0.93 157 + Normal
04/20/2026 02 PM PDT 0.93 157 0 Normal
04/20/2026 03 PM PDT 0.92 155 - Normal
04/20/2026 04 PM PDT 0.91 154 - Normal
04/20/2026 05 PM PDT 0.92 155 + Normal
04/20/2026 06 PM PDT 0.93 157 + Normal
04/20/2026 07 PM PDT 0.94 159 + Normal
04/20/2026 08 PM PDT 0.96 163 + Normal
04/20/2026 09 PM PDT 0.97 164 + Normal
04/20/2026 10 PM PDT 0.99 168 + Normal
04/20/2026 11 PM PDT 1.01 172 + Normal
04/21/2026 12 AM PDT 1.04 177 + Normal
04/21/2026 01 AM PDT 1.06 181 + Normal
04/21/2026 02 AM PDT 1.09 186 + Normal
04/21/2026 03 AM PDT 1.10 188 + Normal
04/21/2026 04 AM PDT 1.15 198 + Normal
04/21/2026 05 AM PDT 1.18 204 + Normal
04/21/2026 06 AM PDT 1.17 202 - Normal
04/21/2026 07 AM PDT 1.16 200 - Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
04/21/2026 08 AM PDT 1.15 198 Normal
04/21/2026 09 AM PDT 1.13 194 - Normal
04/21/2026 10 AM PDT 1.13 194 0 Normal
04/21/2026 11 AM PDT 1.13 194 0 Normal
04/21/2026 12 PM PDT 1.15 198 + Normal
04/21/2026 01 PM PDT 1.16 200 + Normal
04/21/2026 02 PM PDT 1.17 202 + Normal
04/21/2026 03 PM PDT 1.18 204 + Normal
04/21/2026 04 PM PDT 1.18 204 0 Normal
04/21/2026 05 PM PDT 1.19 205 + Normal
04/21/2026 06 PM PDT 1.19 205 0 Normal
04/21/2026 07 PM PDT 1.19 205 0 Normal
04/21/2026 08 PM PDT 1.19 205 0 Normal
04/21/2026 09 PM PDT 1.18 204 - Normal
04/21/2026 10 PM PDT 1.20 207 + Normal
04/21/2026 11 PM PDT 1.25 217 + Normal
04/22/2026 12 AM PDT 1.29 225 + Normal
04/22/2026 01 AM PDT 1.32 231 + Normal
04/22/2026 02 AM PDT 1.34 235 + Normal
04/22/2026 03 AM PDT 1.35 237 + Normal
04/22/2026 04 AM PDT 1.36 239 + Normal
04/22/2026 05 AM PDT 1.38 243 + Normal
04/22/2026 06 AM PDT 1.38 243 0 Normal
04/22/2026 07 AM PDT 1.39 245 + Normal
04/22/2026 08 AM PDT 1.41 249 + Normal
04/22/2026 09 AM PDT 1.47 262 + Normal
04/22/2026 10 AM PDT 1.54 276 + Normal
04/22/2026 11 AM PDT 1.58 285 + Normal
04/22/2026 12 PM PDT 1.59 287 + Normal
04/22/2026 01 PM PDT 1.57 283 - Normal
04/22/2026 02 PM PDT 1.55 279 - Normal
04/22/2026 03 PM PDT 1.51 270 - Normal
04/22/2026 04 PM PDT 1.47 262 - Normal
04/22/2026 05 PM PDT 1.43 253 - Normal
04/22/2026 06 PM PDT 1.39 245 - Normal
04/22/2026 07 PM PDT 1.35 237 - Normal
04/22/2026 08 PM PDT 1.31 229 - Normal
04/22/2026 09 PM PDT 1.28 223 - Normal
04/22/2026 10 PM PDT 1.25 217 - Normal
04/22/2026 11 PM PDT 1.22 211 - Normal
04/23/2026 12 AM PDT 1.20 207 - Normal
04/23/2026 01 AM PDT 1.17 202 - Normal
04/23/2026 02 AM PDT 1.15 198 - Normal
04/23/2026 03 AM PDT 1.12 192 - Normal
04/23/2026 04 AM PDT 1.10 188 - Normal
04/23/2026 05 AM PDT 1.08 185 - Normal
04/23/2026 06 AM PDT 1.07 183 - Normal
04/23/2026 07 AM PDT 1.05 179 - Normal
04/23/2026 08 AM PDT 1.04 177 - Normal
04/23/2026 09 AM PDT 1.02 173 - Normal
04/23/2026 10 AM PDT 1.01 172 - Normal
04/23/2026 11 AM PDT 1.00 170 - Normal
04/23/2026 12 PM PDT 0.99 168 - Normal
04/23/2026 01 PM PDT 0.98 166 - Normal
04/23/2026 02 PM PDT 0.97 164 - Normal
04/23/2026 03 PM PDT 0.96 163 - Normal
04/23/2026 04 PM PDT 0.96 163 0 Normal
04/23/2026 05 PM PDT 0.95 161 - Normal
04/23/2026 06 PM PDT 0.94 159 - Normal
04/23/2026 07 PM PDT 0.94 159 0 Normal
04/23/2026 08 PM PDT 0.93 157 - Normal
04/23/2026 09 PM PDT 0.93 157 0 Normal
04/23/2026 10 PM PDT 0.92 155 - Normal
04/23/2026 11 PM PDT 0.92 155 0 Normal
04/24/2026 12 AM PDT 0.92 155 0 Normal
04/24/2026 01 AM PDT 0.91 154 - Normal
04/24/2026 02 AM PDT 0.91 154 0 Normal
04/24/2026 03 AM PDT 0.91 154 0 Normal
04/24/2026 04 AM PDT 0.90 152 - Normal
04/24/2026 05 AM PDT 0.90 152 0 Normal
04/24/2026 06 AM PDT 0.90 152 0 Normal
04/24/2026 07 AM PDT 0.90 152 0 Normal
04/24/2026 08 AM PDT 0.89 150 - Normal
04/24/2026 09 AM PDT 0.89 150 0 Normal
04/24/2026 10 AM PDT 0.89 150 0 Normal
04/24/2026 11 AM PDT 0.89 150 0 Normal
04/24/2026 12 PM PDT 0.89 150 0 Normal
04/24/2026 01 PM PDT 0.89 150 0 Normal
04/24/2026 02 PM PDT 0.88 148 - Normal
04/24/2026 03 PM PDT 0.88 148 0 Normal
04/24/2026 04 PM PDT 0.88 148 0 Normal
04/24/2026 05 PM PDT 0.88 148 0 Normal
04/24/2026 06 PM PDT 0.88 148 0 Normal
04/24/2026 07 PM PDT 0.88 148 0 Normal
04/24/2026 08 PM PDT 0.88 148 0 Normal
04/24/2026 09 PM PDT 0.87 147 - Normal
04/24/2026 10 PM PDT 0.87 147 0 Normal
04/24/2026 11 PM PDT 0.87 147 0 Normal
04/25/2026 12 AM PDT 0.87 147 0 Normal
04/25/2026 01 AM PDT 0.87 147 0 Normal
04/25/2026 02 AM PDT 0.87 147 0 Normal
04/25/2026 03 AM PDT 0.86 145 - Normal
04/25/2026 04 AM PDT 0.86 145 0 Normal
04/25/2026 05 AM PDT 0.86 145 0 Normal
04/25/2026 06 AM PDT 0.86 145 0 Normal
04/25/2026 07 AM PDT 0.86 145 0 Normal
04/25/2026 08 AM PDT 0.86 145 0 Normal
04/25/2026 09 AM PDT 0.86 145 0 Normal
04/25/2026 10 AM PDT 0.86 145 0 Normal
04/25/2026 11 AM PDT 0.86 145 0 Normal
04/25/2026 12 PM PDT 0.85 143 - Normal
04/25/2026 01 PM PDT 0.85 143 0 Normal
04/25/2026 02 PM PDT 0.85 143 0 Normal
04/25/2026 03 PM PDT 0.85 143 0 Normal
04/25/2026 04 PM PDT 0.85 143 0 Normal
04/25/2026 05 PM PDT 0.85 143 0 Normal
04/25/2026 06 PM PDT 0.85 143 0 Normal
04/25/2026 07 PM PDT 0.85 143 0 Normal
04/25/2026 08 PM PDT 0.85 143 0 Normal
04/25/2026 09 PM PDT 0.84 141 - Normal
04/25/2026 10 PM PDT 0.84 141 0 Normal
04/25/2026 11 PM PDT 0.84 141 0 Normal
04/26/2026 12 AM PDT 0.84 141 0 Normal
04/26/2026 01 AM PDT 0.84 141 0 Normal
04/26/2026 02 AM PDT 0.84 141 0 Normal
04/26/2026 03 AM PDT 0.84 141 0 Normal
04/26/2026 04 AM PDT 0.84 141 0 Normal
04/26/2026 05 AM PDT 0.84 141 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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