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RUSSIAN RIVER - GEYSERVILLE (GEYC1)
| Latitude: 38.71º N | Longitude: 122.89º W | Elevation: 190 Feet | | Forecast Type: Unofficial Location |
| Location: Sonoma County in California | Bulletin Group: Russian Napa | River Group: Russian Napa |
| Issuance Time: | May 02 2026 at 8:52 AM PDT | Next Issuance: | May 03 2026 at 9:00 AM PDT
| |
| Action/Monitor: 38.0 Feet | Minor Flood: 39.7 Feet | Moderate Flood: 46.0 Feet | Major Flood: 50.0 Feet |
# Tabular Observed and Forecast Hydrograph Information
#
# Location: Russian River - Geyserville (GEYC1)
#
# File Generation Time: 05/02/2026 at 08:53 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 04/27/2026 at 10:00 AM PDT
# Maximum Observed Stage: 25.09 Feet
# Maximum Observed Flow: 331 cfs
#
# Earliest Date & Time of Maximum Forecast: 05/02/2026 at 09:00 AM PDT
# Maximum Forecast Stage: 24.85 Feet
# Maximum Forecast Flow: 264 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
04/27/2026 08 AM PDT 25.09 331 Normal
04/27/2026 09 AM PDT 25.09 331 0 Normal
04/27/2026 10 AM PDT 25.09 331 0 Normal
04/27/2026 11 AM PDT 25.08 328 - Normal
04/27/2026 12 PM PDT 25.07 325 - Normal
04/27/2026 01 PM PDT 25.07 325 0 Normal
04/27/2026 02 PM PDT 25.07 325 0 Normal
04/27/2026 03 PM PDT 25.06 322 - Normal
04/27/2026 04 PM PDT 25.05 319 - Normal
04/27/2026 05 PM PDT 25.06 322 + Normal
04/27/2026 06 PM PDT 25.03 313 - Normal
04/27/2026 07 PM PDT 25.05 319 + Normal
04/27/2026 08 PM PDT 25.05 319 0 Normal
04/27/2026 09 PM PDT 25.04 316 - Normal
04/27/2026 10 PM PDT 25.05 319 + Normal
04/27/2026 11 PM PDT 25.05 319 0 Normal
04/28/2026 12 AM PDT 25.03 313 - Normal
04/28/2026 01 AM PDT 25.03 313 0 Normal
04/28/2026 02 AM PDT 25.03 313 0 Normal
04/28/2026 03 AM PDT 25.03 313 0 Normal
04/28/2026 04 AM PDT 25.03 313 0 Normal
04/28/2026 05 AM PDT 25.02 310 - Normal
04/28/2026 06 AM PDT 25.02 310 0 Normal
04/28/2026 07 AM PDT 25.02 310 0 Normal
04/28/2026 08 AM PDT 25.02 310 0 Normal
04/28/2026 09 AM PDT 25.03 313 + Normal
04/28/2026 10 AM PDT 25.03 313 0 Normal
04/28/2026 11 AM PDT 25.02 310 - Normal
04/28/2026 12 PM PDT 25.04 316 + Normal
04/28/2026 01 PM PDT 25.03 313 - Normal
04/28/2026 02 PM PDT 25.03 313 0 Normal
04/28/2026 03 PM PDT 25.02 310 - Normal
04/28/2026 04 PM PDT 25.02 310 0 Normal
04/28/2026 05 PM PDT 25.01 308 - Normal
04/28/2026 06 PM PDT 25.01 308 0 Normal
04/28/2026 07 PM PDT 25.02 310 + Normal
04/28/2026 08 PM PDT 25.01 308 - Normal
04/28/2026 09 PM PDT 25.00 305 - Normal
04/28/2026 10 PM PDT 25.01 308 + Normal
04/28/2026 11 PM PDT 25.00 305 - Normal
04/29/2026 12 AM PDT 24.99 302 - Normal
04/29/2026 01 AM PDT 24.99 302 0 Normal
04/29/2026 02 AM PDT 24.98 299 - Normal
04/29/2026 03 AM PDT 24.98 299 0 Normal
04/29/2026 04 AM PDT 24.98 299 0 Normal
04/29/2026 05 AM PDT 24.98 299 0 Normal
04/29/2026 06 AM PDT 24.97 296 - Normal
04/29/2026 07 AM PDT 24.98 299 + Normal
04/29/2026 08 AM PDT 24.97 296 - Normal
04/29/2026 09 AM PDT 24.96 294 - Normal
04/29/2026 10 AM PDT 24.97 296 + Normal
04/29/2026 11 AM PDT 24.98 299 + Normal
04/29/2026 12 PM PDT 24.97 296 - Normal
04/29/2026 01 PM PDT 24.97 296 0 Normal
04/29/2026 02 PM PDT 24.97 296 0 Normal
04/29/2026 03 PM PDT 24.97 296 0 Normal
04/29/2026 04 PM PDT 24.97 296 0 Normal
04/29/2026 05 PM PDT 24.96 294 - Normal
04/29/2026 06 PM PDT 24.95 291 - Normal
04/29/2026 07 PM PDT 24.96 294 + Normal
04/29/2026 08 PM PDT 24.96 294 0 Normal
04/29/2026 09 PM PDT 24.95 291 - Normal
04/29/2026 10 PM PDT 24.95 291 0 Normal
04/29/2026 11 PM PDT 24.94 288 - Normal
04/30/2026 12 AM PDT 24.93 285 - Normal
04/30/2026 01 AM PDT 24.93 285 0 Normal
04/30/2026 02 AM PDT 24.93 285 0 Normal
04/30/2026 03 AM PDT 24.93 285 0 Normal
04/30/2026 04 AM PDT 24.92 283 - Normal
04/30/2026 05 AM PDT 24.91 280 - Normal
04/30/2026 06 AM PDT 24.91 280 0 Normal
04/30/2026 07 AM PDT 24.90 277 - Normal
04/30/2026 08 AM PDT 24.91 280 + Normal
04/30/2026 09 AM PDT 24.92 283 + Normal
04/30/2026 10 AM PDT 24.90 277 - Normal
04/30/2026 11 AM PDT 24.92 283 + Normal
04/30/2026 12 PM PDT 24.92 283 0 Normal
04/30/2026 01 PM PDT 24.93 285 + Normal
04/30/2026 02 PM PDT 24.94 288 + Normal
04/30/2026 03 PM PDT 24.94 288 0 Normal
04/30/2026 04 PM PDT 24.92 283 - Normal
04/30/2026 05 PM PDT 24.93 285 + Normal
04/30/2026 06 PM PDT 24.92 283 - Normal
04/30/2026 07 PM PDT 24.92 283 0 Normal
04/30/2026 08 PM PDT 24.91 280 - Normal
04/30/2026 09 PM PDT 24.91 280 0 Normal
04/30/2026 10 PM PDT 24.90 277 - Normal
04/30/2026 11 PM PDT 24.90 277 0 Normal
05/01/2026 12 AM PDT 24.90 277 0 Normal
05/01/2026 01 AM PDT 24.90 277 0 Normal
05/01/2026 02 AM PDT 24.90 277 0 Normal
05/01/2026 03 AM PDT 24.89 275 - Normal
05/01/2026 04 AM PDT 24.89 275 0 Normal
05/01/2026 05 AM PDT 24.90 277 + Normal
05/01/2026 06 AM PDT 24.90 277 0 Normal
05/01/2026 07 AM PDT 24.90 277 0 Normal
05/01/2026 08 AM PDT 24.89 275 - Normal
05/01/2026 09 AM PDT 24.90 277 + Normal
05/01/2026 10 AM PDT 24.90 277 0 Normal
05/01/2026 11 AM PDT 24.90 277 0 Normal
05/01/2026 12 PM PDT 24.90 277 0 Normal
05/01/2026 01 PM PDT 24.89 275 - Normal
05/01/2026 02 PM PDT 24.90 277 + Normal
05/01/2026 03 PM PDT 24.89 275 - Normal
05/01/2026 04 PM PDT 24.89 275 0 Normal
05/01/2026 05 PM PDT 24.89 275 0 Normal
05/01/2026 06 PM PDT 24.89 275 0 Normal
05/01/2026 07 PM PDT 24.88 272 - Normal
05/01/2026 08 PM PDT 24.88 272 0 Normal
05/01/2026 09 PM PDT 24.88 272 0 Normal
05/01/2026 10 PM PDT 24.88 272 0 Normal
05/01/2026 11 PM PDT 24.87 269 - Normal
05/02/2026 12 AM PDT 24.87 269 0 Normal
05/02/2026 01 AM PDT 24.86 266 - Normal
05/02/2026 02 AM PDT 24.85 264 - Normal
05/02/2026 03 AM PDT 24.85 264 0 Normal
05/02/2026 04 AM PDT 24.85 264 0 Normal
05/02/2026 05 AM PDT 24.85 264 0 Normal
05/02/2026 06 AM PDT 24.85 264 0 Normal
05/02/2026 07 AM PDT 24.85 264 0 Normal
05/02/2026 08 AM PDT 24.85 264 0 Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
05/02/2026 09 AM PDT 24.85 264 Normal
05/02/2026 10 AM PDT 24.85 264 0 Normal
05/02/2026 11 AM PDT 24.85 264 0 Normal
05/02/2026 12 PM PDT 24.85 264 0 Normal
05/02/2026 01 PM PDT 24.85 264 0 Normal
05/02/2026 02 PM PDT 24.85 264 0 Normal
05/02/2026 03 PM PDT 24.85 264 0 Normal
05/02/2026 04 PM PDT 24.85 264 0 Normal
05/02/2026 05 PM PDT 24.85 264 0 Normal
05/02/2026 06 PM PDT 24.85 264 0 Normal
05/02/2026 07 PM PDT 24.85 264 0 Normal
05/02/2026 08 PM PDT 24.85 264 0 Normal
05/02/2026 09 PM PDT 24.84 261 - Normal
05/02/2026 10 PM PDT 24.84 261 0 Normal
05/02/2026 11 PM PDT 24.84 261 0 Normal
05/03/2026 12 AM PDT 24.84 261 0 Normal
05/03/2026 01 AM PDT 24.84 261 0 Normal
05/03/2026 02 AM PDT 24.84 261 0 Normal
05/03/2026 03 AM PDT 24.84 261 0 Normal
05/03/2026 04 AM PDT 24.84 261 0 Normal
05/03/2026 05 AM PDT 24.84 261 0 Normal
05/03/2026 06 AM PDT 24.83 259 - Normal
05/03/2026 07 AM PDT 24.83 259 0 Normal
05/03/2026 08 AM PDT 24.83 259 0 Normal
05/03/2026 09 AM PDT 24.83 259 0 Normal
05/03/2026 10 AM PDT 24.83 259 0 Normal
05/03/2026 11 AM PDT 24.83 259 0 Normal
05/03/2026 12 PM PDT 24.82 256 - Normal
05/03/2026 01 PM PDT 24.82 256 0 Normal
05/03/2026 02 PM PDT 24.82 256 0 Normal
05/03/2026 03 PM PDT 24.82 256 0 Normal
05/03/2026 04 PM PDT 24.82 256 0 Normal
05/03/2026 05 PM PDT 24.82 256 0 Normal
05/03/2026 06 PM PDT 24.82 256 0 Normal
05/03/2026 07 PM PDT 24.82 256 0 Normal
05/03/2026 08 PM PDT 24.82 256 0 Normal
05/03/2026 09 PM PDT 24.81 253 - Normal
05/03/2026 10 PM PDT 24.81 253 0 Normal
05/03/2026 11 PM PDT 24.81 253 0 Normal
05/04/2026 12 AM PDT 24.81 253 0 Normal
05/04/2026 01 AM PDT 24.81 253 0 Normal
05/04/2026 02 AM PDT 24.81 253 0 Normal
05/04/2026 03 AM PDT 24.81 253 0 Normal
05/04/2026 04 AM PDT 24.81 253 0 Normal
05/04/2026 05 AM PDT 24.80 251 - Normal
05/04/2026 06 AM PDT 24.80 251 0 Normal
05/04/2026 07 AM PDT 24.80 251 0 Normal
05/04/2026 08 AM PDT 24.80 251 0 Normal
05/04/2026 09 AM PDT 24.80 251 0 Normal
05/04/2026 10 AM PDT 24.80 251 0 Normal
05/04/2026 11 AM PDT 24.80 251 0 Normal
05/04/2026 12 PM PDT 24.80 251 0 Normal
05/04/2026 01 PM PDT 24.80 251 0 Normal
05/04/2026 02 PM PDT 24.80 251 0 Normal
05/04/2026 03 PM PDT 24.80 251 0 Normal
05/04/2026 04 PM PDT 24.79 248 - Normal
05/04/2026 05 PM PDT 24.79 248 0 Normal
05/04/2026 06 PM PDT 24.79 248 0 Normal
05/04/2026 07 PM PDT 24.79 248 0 Normal
05/04/2026 08 PM PDT 24.79 248 0 Normal
05/04/2026 09 PM PDT 24.79 248 0 Normal
05/04/2026 10 PM PDT 24.79 248 0 Normal
05/04/2026 11 PM PDT 24.79 248 0 Normal
05/05/2026 12 AM PDT 24.79 248 0 Normal
05/05/2026 01 AM PDT 24.79 248 0 Normal
05/05/2026 02 AM PDT 24.78 246 - Normal
05/05/2026 03 AM PDT 24.78 246 0 Normal
05/05/2026 04 AM PDT 24.78 246 0 Normal
05/05/2026 05 AM PDT 24.78 246 0 Normal
05/05/2026 06 AM PDT 24.78 246 0 Normal
05/05/2026 07 AM PDT 24.79 248 + Normal
05/05/2026 08 AM PDT 24.79 248 0 Normal
05/05/2026 09 AM PDT 24.78 246 - Normal
05/05/2026 10 AM PDT 24.78 246 0 Normal
05/05/2026 11 AM PDT 24.78 246 0 Normal
05/05/2026 12 PM PDT 24.78 246 0 Normal
05/05/2026 01 PM PDT 24.78 246 0 Normal
05/05/2026 02 PM PDT 24.78 246 0 Normal
05/05/2026 03 PM PDT 24.78 246 0 Normal
05/05/2026 04 PM PDT 24.78 246 0 Normal
05/05/2026 05 PM PDT 24.78 246 0 Normal
05/05/2026 06 PM PDT 24.77 243 - Normal
05/05/2026 07 PM PDT 24.77 243 0 Normal
05/05/2026 08 PM PDT 24.77 243 0 Normal
05/05/2026 09 PM PDT 24.77 243 0 Normal
05/05/2026 10 PM PDT 24.77 243 0 Normal
05/05/2026 11 PM PDT 24.77 243 0 Normal
05/06/2026 12 AM PDT 24.77 243 0 Normal
05/06/2026 01 AM PDT 24.77 243 0 Normal
05/06/2026 02 AM PDT 24.77 243 0 Normal
05/06/2026 03 AM PDT 24.77 243 0 Normal
05/06/2026 04 AM PDT 24.77 243 0 Normal
05/06/2026 05 AM PDT 24.76 240 - Normal
05/06/2026 06 AM PDT 24.76 240 0 Normal
05/06/2026 07 AM PDT 24.76 240 0 Normal
05/06/2026 08 AM PDT 24.76 240 0 Normal
05/06/2026 09 AM PDT 24.76 240 0 Normal
05/06/2026 10 AM PDT 24.76 240 0 Normal
05/06/2026 11 AM PDT 24.76 240 0 Normal
05/06/2026 12 PM PDT 24.76 240 0 Normal
05/06/2026 01 PM PDT 24.75 238 - Normal
05/06/2026 02 PM PDT 24.75 238 0 Normal
05/06/2026 03 PM PDT 24.75 238 0 Normal
05/06/2026 04 PM PDT 24.75 238 0 Normal
05/06/2026 05 PM PDT 24.75 238 0 Normal
05/06/2026 06 PM PDT 24.75 238 0 Normal
05/06/2026 07 PM PDT 24.75 238 0 Normal
05/06/2026 08 PM PDT 24.75 238 0 Normal
05/06/2026 09 PM PDT 24.75 238 0 Normal
05/06/2026 10 PM PDT 24.75 238 0 Normal
05/06/2026 11 PM PDT 24.74 235 - Normal
05/07/2026 12 AM PDT 24.74 235 0 Normal
05/07/2026 01 AM PDT 24.74 235 0 Normal
05/07/2026 02 AM PDT 24.74 235 0 Normal
05/07/2026 03 AM PDT 24.74 235 0 Normal
05/07/2026 04 AM PDT 24.74 235 0 Normal
05/07/2026 05 AM PDT 24.74 235 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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