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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: | Apr 09 2026 at 12:58 PM PDT | Next Issuance: | Apr 10 2026 at 9:00 AM PDT
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| 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: 04/09/2026 at 01:00 PM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 04/05/2026 at 09:00 PM PDT
# Maximum Observed Stage: 25.23 Feet
# Maximum Observed Flow: 372 cfs
#
# Earliest Date & Time of Maximum Forecast: 04/12/2026 at 09:00 PM PDT
# Maximum Forecast Stage: 26.23 Feet
# Maximum Forecast Flow: 732 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
04/04/2026 01 PM PDT 25.23 372 Normal
04/04/2026 02 PM PDT 25.23 372 0 Normal
04/04/2026 03 PM PDT 25.23 372 0 Normal
04/04/2026 04 PM PDT 25.22 369 - Normal
04/04/2026 05 PM PDT 25.21 366 - Normal
04/04/2026 06 PM PDT 25.20 363 - Normal
04/04/2026 07 PM PDT 25.20 363 0 Normal
04/04/2026 08 PM PDT 25.22 369 + Normal
04/04/2026 09 PM PDT 25.22 369 0 Normal
04/04/2026 10 PM PDT 25.22 369 0 Normal
04/04/2026 11 PM PDT 25.21 366 - Normal
04/05/2026 12 AM PDT 25.20 363 - Normal
04/05/2026 01 AM PDT 25.21 366 + Normal
04/05/2026 02 AM PDT 25.21 366 0 Normal
04/05/2026 03 AM PDT 25.21 366 0 Normal
04/05/2026 04 AM PDT 25.21 366 0 Normal
04/05/2026 05 AM PDT 25.20 363 - Normal
04/05/2026 06 AM PDT 25.21 366 + Normal
04/05/2026 07 AM PDT 25.20 363 - Normal
04/05/2026 08 AM PDT 25.18 357 - Normal
04/05/2026 09 AM PDT 25.19 360 + Normal
04/05/2026 10 AM PDT 25.20 363 + Normal
04/05/2026 11 AM PDT 25.20 363 0 Normal
04/05/2026 12 PM PDT 25.20 363 0 Normal
04/05/2026 01 PM PDT 25.22 369 + Normal
04/05/2026 02 PM PDT 25.22 369 0 Normal
04/05/2026 03 PM PDT 25.23 372 + Normal
04/05/2026 04 PM PDT 25.23 372 0 Normal
04/05/2026 05 PM PDT 25.23 372 0 Normal
04/05/2026 06 PM PDT 25.22 369 - Normal
04/05/2026 07 PM PDT 25.22 369 0 Normal
04/05/2026 08 PM PDT 25.22 369 0 Normal
04/05/2026 09 PM PDT 25.23 372 + Normal
04/05/2026 10 PM PDT 25.22 369 - Normal
04/05/2026 11 PM PDT 25.22 369 0 Normal
04/06/2026 12 AM PDT 25.22 369 0 Normal
04/06/2026 01 AM PDT 25.22 369 0 Normal
04/06/2026 02 AM PDT 25.21 366 - Normal
04/06/2026 03 AM PDT 25.21 366 0 Normal
04/06/2026 04 AM PDT 25.20 363 - Normal
04/06/2026 05 AM PDT 25.21 366 + Normal
04/06/2026 06 AM PDT 25.20 363 - Normal
04/06/2026 07 AM PDT 25.20 363 0 Normal
04/06/2026 08 AM PDT 25.19 360 - Normal
04/06/2026 09 AM PDT 25.19 360 0 Normal
04/06/2026 10 AM PDT 25.19 360 0 Normal
04/06/2026 11 AM PDT 25.21 366 + Normal
04/06/2026 12 PM PDT 25.21 366 0 Normal
04/06/2026 01 PM PDT 25.21 366 0 Normal
04/06/2026 02 PM PDT 25.21 366 0 Normal
04/06/2026 03 PM PDT 25.21 366 0 Normal
04/06/2026 04 PM PDT 25.22 369 + Normal
04/06/2026 05 PM PDT 25.21 366 - Normal
04/06/2026 06 PM PDT 25.20 363 - Normal
04/06/2026 07 PM PDT 25.20 363 0 Normal
04/06/2026 08 PM PDT 25.17 354 - Normal
04/06/2026 09 PM PDT 25.20 363 + Normal
04/06/2026 10 PM PDT 25.20 363 0 Normal
04/06/2026 11 PM PDT 25.20 363 0 Normal
04/07/2026 12 AM PDT 25.19 360 - Normal
04/07/2026 01 AM PDT 25.18 357 - Normal
04/07/2026 02 AM PDT 25.18 357 0 Normal
04/07/2026 03 AM PDT 25.19 360 + Normal
04/07/2026 04 AM PDT 25.19 360 0 Normal
04/07/2026 05 AM PDT 25.19 360 0 Normal
04/07/2026 06 AM PDT 25.19 360 0 Normal
04/07/2026 07 AM PDT 25.16 351 - Normal
04/07/2026 08 AM PDT 25.17 354 + Normal
04/07/2026 09 AM PDT 25.18 357 + Normal
04/07/2026 10 AM PDT 25.19 360 + Normal
04/07/2026 11 AM PDT 25.19 360 0 Normal
04/07/2026 12 PM PDT 25.19 360 0 Normal
04/07/2026 01 PM PDT 25.20 363 + Normal
04/07/2026 02 PM PDT 25.19 360 - Normal
04/07/2026 03 PM PDT 25.19 360 0 Normal
04/07/2026 04 PM PDT 25.20 363 + Normal
04/07/2026 05 PM PDT 25.20 363 0 Normal
04/07/2026 06 PM PDT 25.19 360 - Normal
04/07/2026 07 PM PDT 25.18 357 - Normal
04/07/2026 08 PM PDT 25.17 354 - Normal
04/07/2026 09 PM PDT 25.16 351 - Normal
04/07/2026 10 PM PDT 25.17 354 + Normal
04/07/2026 11 PM PDT 25.17 354 0 Normal
04/08/2026 12 AM PDT 25.16 351 - Normal
04/08/2026 01 AM PDT 25.16 351 0 Normal
04/08/2026 02 AM PDT 25.16 351 0 Normal
04/08/2026 03 AM PDT 25.16 351 0 Normal
04/08/2026 04 AM PDT 25.16 351 0 Normal
04/08/2026 05 AM PDT 25.16 351 0 Normal
04/08/2026 06 AM PDT 25.16 351 0 Normal
04/08/2026 07 AM PDT 25.15 348 - Normal
04/08/2026 08 AM PDT 25.16 351 + Normal
04/08/2026 09 AM PDT 25.15 348 - Normal
04/08/2026 10 AM PDT 25.15 348 0 Normal
04/08/2026 11 AM PDT 25.16 351 + Normal
04/08/2026 12 PM PDT 25.17 354 + Normal
04/08/2026 01 PM PDT 25.17 354 0 Normal
04/08/2026 02 PM PDT 25.17 354 0 Normal
04/08/2026 03 PM PDT 25.16 351 - Normal
04/08/2026 04 PM PDT 25.16 351 0 Normal
04/08/2026 05 PM PDT 25.16 351 0 Normal
04/08/2026 06 PM PDT 25.16 351 0 Normal
04/08/2026 07 PM PDT 25.15 348 - Normal
04/08/2026 08 PM PDT 25.15 348 0 Normal
04/08/2026 09 PM PDT 25.15 348 0 Normal
04/08/2026 10 PM PDT 25.15 348 0 Normal
04/08/2026 11 PM PDT 25.15 348 0 Normal
04/09/2026 12 AM PDT 25.15 348 0 Normal
04/09/2026 01 AM PDT 25.14 345 - Normal
04/09/2026 02 AM PDT 25.14 345 0 Normal
04/09/2026 03 AM PDT 25.14 345 0 Normal
04/09/2026 04 AM PDT 25.14 345 0 Normal
04/09/2026 05 AM PDT 25.14 345 0 Normal
04/09/2026 06 AM PDT 25.14 345 0 Normal
04/09/2026 07 AM PDT 25.14 345 0 Normal
04/09/2026 08 AM PDT 25.14 345 0 Normal
04/09/2026 09 AM PDT 25.15 348 + Normal
04/09/2026 10 AM PDT 25.14 345 - Normal
04/09/2026 11 AM PDT 25.14 345 0 Normal
04/09/2026 12 PM PDT 25.14 345 0 Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
04/09/2026 01 PM PDT 25.14 345 Normal
04/09/2026 02 PM PDT 25.14 345 0 Normal
04/09/2026 03 PM PDT 25.14 345 0 Normal
04/09/2026 04 PM PDT 25.14 345 0 Normal
04/09/2026 05 PM PDT 25.14 345 0 Normal
04/09/2026 06 PM PDT 25.14 345 0 Normal
04/09/2026 07 PM PDT 25.14 345 0 Normal
04/09/2026 08 PM PDT 25.14 345 0 Normal
04/09/2026 09 PM PDT 25.14 345 0 Normal
04/09/2026 10 PM PDT 25.14 345 0 Normal
04/09/2026 11 PM PDT 25.14 345 0 Normal
04/10/2026 12 AM PDT 25.14 345 0 Normal
04/10/2026 01 AM PDT 25.15 348 + Normal
04/10/2026 02 AM PDT 25.15 348 0 Normal
04/10/2026 03 AM PDT 25.15 348 0 Normal
04/10/2026 04 AM PDT 25.15 348 0 Normal
04/10/2026 05 AM PDT 25.15 348 0 Normal
04/10/2026 06 AM PDT 25.15 348 0 Normal
04/10/2026 07 AM PDT 25.15 348 0 Normal
04/10/2026 08 AM PDT 25.15 348 0 Normal
04/10/2026 09 AM PDT 25.16 351 + Normal
04/10/2026 10 AM PDT 25.16 351 0 Normal
04/10/2026 11 AM PDT 25.16 351 0 Normal
04/10/2026 12 PM PDT 25.16 351 0 Normal
04/10/2026 01 PM PDT 25.17 354 + Normal
04/10/2026 02 PM PDT 25.17 354 0 Normal
04/10/2026 03 PM PDT 25.18 357 + Normal
04/10/2026 04 PM PDT 25.18 357 0 Normal
04/10/2026 05 PM PDT 25.19 360 + Normal
04/10/2026 06 PM PDT 25.20 363 + Normal
04/10/2026 07 PM PDT 25.20 363 0 Normal
04/10/2026 08 PM PDT 25.20 363 0 Normal
04/10/2026 09 PM PDT 25.21 366 + Normal
04/10/2026 10 PM PDT 25.22 369 + Normal
04/10/2026 11 PM PDT 25.22 369 0 Normal
04/11/2026 12 AM PDT 25.23 372 + Normal
04/11/2026 01 AM PDT 25.23 372 0 Normal
04/11/2026 02 AM PDT 25.24 375 + Normal
04/11/2026 03 AM PDT 25.24 375 0 Normal
04/11/2026 04 AM PDT 25.24 375 0 Normal
04/11/2026 05 AM PDT 25.24 375 0 Normal
04/11/2026 06 AM PDT 25.25 379 + Normal
04/11/2026 07 AM PDT 25.25 379 0 Normal
04/11/2026 08 AM PDT 25.25 379 0 Normal
04/11/2026 09 AM PDT 25.25 379 0 Normal
04/11/2026 10 AM PDT 25.25 379 0 Normal
04/11/2026 11 AM PDT 25.25 379 0 Normal
04/11/2026 12 PM PDT 25.25 379 0 Normal
04/11/2026 01 PM PDT 25.25 379 0 Normal
04/11/2026 02 PM PDT 25.25 379 0 Normal
04/11/2026 03 PM PDT 25.25 379 0 Normal
04/11/2026 04 PM PDT 25.26 382 + Normal
04/11/2026 05 PM PDT 25.26 382 0 Normal
04/11/2026 06 PM PDT 25.27 385 + Normal
04/11/2026 07 PM PDT 25.28 388 + Normal
04/11/2026 08 PM PDT 25.29 391 + Normal
04/11/2026 09 PM PDT 25.30 394 + Normal
04/11/2026 10 PM PDT 25.32 400 + Normal
04/11/2026 11 PM PDT 25.34 407 + Normal
04/12/2026 12 AM PDT 25.36 413 + Normal
04/12/2026 01 AM PDT 25.38 419 + Normal
04/12/2026 02 AM PDT 25.40 426 + Normal
04/12/2026 03 AM PDT 25.42 432 + Normal
04/12/2026 04 AM PDT 25.43 436 + Normal
04/12/2026 05 AM PDT 25.44 439 + Normal
04/12/2026 06 AM PDT 25.45 442 + Normal
04/12/2026 07 AM PDT 25.48 452 + Normal
04/12/2026 08 AM PDT 25.52 465 + Normal
04/12/2026 09 AM PDT 25.59 489 + Normal
04/12/2026 10 AM PDT 25.69 524 + Normal
04/12/2026 11 AM PDT 25.79 559 + Normal
04/12/2026 12 PM PDT 25.88 592 + Normal
04/12/2026 01 PM PDT 25.95 619 + Normal
04/12/2026 02 PM PDT 26.02 646 + Normal
04/12/2026 03 PM PDT 26.08 670 + Normal
04/12/2026 04 PM PDT 26.12 687 + Normal
04/12/2026 05 PM PDT 26.16 703 + Normal
04/12/2026 06 PM PDT 26.19 715 + Normal
04/12/2026 07 PM PDT 26.21 724 + Normal
04/12/2026 08 PM PDT 26.22 728 + Normal
04/12/2026 09 PM PDT 26.23 732 + Normal
04/12/2026 10 PM PDT 26.23 732 0 Normal
04/12/2026 11 PM PDT 26.22 728 - Normal
04/13/2026 12 AM PDT 26.21 724 - Normal
04/13/2026 01 AM PDT 26.17 707 - Normal
04/13/2026 02 AM PDT 26.12 687 - Normal
04/13/2026 03 AM PDT 26.06 662 - Normal
04/13/2026 04 AM PDT 25.98 631 - Normal
04/13/2026 05 AM PDT 25.90 600 - Normal
04/13/2026 06 AM PDT 25.83 574 - Normal
04/13/2026 07 AM PDT 25.76 549 - Normal
04/13/2026 08 AM PDT 25.70 527 - Normal
04/13/2026 09 AM PDT 25.64 506 - Normal
04/13/2026 10 AM PDT 25.59 489 - Normal
04/13/2026 11 AM PDT 25.54 472 - Normal
04/13/2026 12 PM PDT 25.50 459 - Normal
04/13/2026 01 PM PDT 25.46 445 - Normal
04/13/2026 02 PM PDT 25.43 436 - Normal
04/13/2026 03 PM PDT 25.40 426 - Normal
04/13/2026 04 PM PDT 25.38 419 - Normal
04/13/2026 05 PM PDT 25.35 410 - Normal
04/13/2026 06 PM PDT 25.34 407 - Normal
04/13/2026 07 PM PDT 25.32 400 - Normal
04/13/2026 08 PM PDT 25.32 400 0 Normal
04/13/2026 09 PM PDT 25.32 400 0 Normal
04/13/2026 10 PM PDT 25.32 400 0 Normal
04/13/2026 11 PM PDT 25.33 403 + Normal
04/14/2026 12 AM PDT 25.34 407 + Normal
04/14/2026 01 AM PDT 25.35 410 + Normal
04/14/2026 02 AM PDT 25.36 413 + Normal
04/14/2026 03 AM PDT 25.37 416 + Normal
04/14/2026 04 AM PDT 25.38 419 + Normal
04/14/2026 05 AM PDT 25.39 423 + 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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