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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: | Mar 28 2026 at 7:52 AM PDT | Next Issuance: | Mar 29 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: 03/28/2026 at 07:54 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 03/23/2026 at 02:00 PM PDT
# Maximum Observed Stage: 25.50 Feet
# Maximum Observed Flow: 459 cfs
#
# Earliest Date & Time of Maximum Forecast: 03/28/2026 at 08:00 AM PDT
# Maximum Forecast Stage: 25.30 Feet
# Maximum Forecast Flow: 394 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
03/23/2026 07 AM PDT 25.47 449 Normal
03/23/2026 08 AM PDT 25.47 449 0 Normal
03/23/2026 09 AM PDT 25.45 442 - Normal
03/23/2026 10 AM PDT 25.47 449 + Normal
03/23/2026 11 AM PDT 25.47 449 0 Normal
03/23/2026 12 PM PDT 25.49 455 + Normal
03/23/2026 01 PM PDT 25.49 455 0 Normal
03/23/2026 02 PM PDT 25.50 459 + Normal
03/23/2026 03 PM PDT 25.48 452 - Normal
03/23/2026 04 PM PDT 25.47 449 - Normal
03/23/2026 05 PM PDT 25.48 452 + Normal
03/23/2026 06 PM PDT 25.48 452 0 Normal
03/23/2026 07 PM PDT 25.46 445 - Normal
03/23/2026 08 PM PDT 25.46 445 0 Normal
03/23/2026 09 PM PDT 25.45 442 - Normal
03/23/2026 10 PM PDT 25.45 442 0 Normal
03/23/2026 11 PM PDT 25.45 442 0 Normal
03/24/2026 12 AM PDT 25.45 442 0 Normal
03/24/2026 01 AM PDT 25.44 439 - Normal
03/24/2026 02 AM PDT 25.44 439 0 Normal
03/24/2026 03 AM PDT 25.44 439 0 Normal
03/24/2026 04 AM PDT 25.43 436 - Normal
03/24/2026 05 AM PDT 25.43 436 0 Normal
03/24/2026 06 AM PDT 25.43 436 0 Normal
03/24/2026 07 AM PDT 25.43 436 0 Normal
03/24/2026 08 AM PDT 25.42 432 - Normal
03/24/2026 09 AM PDT 25.42 432 0 Normal
03/24/2026 10 AM PDT 25.42 432 0 Normal
03/24/2026 11 AM PDT 25.44 439 + Normal
03/24/2026 12 PM PDT 25.43 436 - Normal
03/24/2026 01 PM PDT 25.43 436 0 Normal
03/24/2026 02 PM PDT 25.43 436 0 Normal
03/24/2026 03 PM PDT 25.44 439 + Normal
03/24/2026 04 PM PDT 25.43 436 - Normal
03/24/2026 05 PM PDT 25.42 432 - Normal
03/24/2026 06 PM PDT 25.42 432 0 Normal
03/24/2026 07 PM PDT 25.41 429 - Normal
03/24/2026 08 PM PDT 25.41 429 0 Normal
03/24/2026 09 PM PDT 25.41 429 0 Normal
03/24/2026 10 PM PDT 25.40 426 - Normal
03/24/2026 11 PM PDT 25.40 426 0 Normal
03/25/2026 12 AM PDT 25.40 426 0 Normal
03/25/2026 01 AM PDT 25.40 426 0 Normal
03/25/2026 02 AM PDT 25.39 423 - Normal
03/25/2026 03 AM PDT 25.39 423 0 Normal
03/25/2026 04 AM PDT 25.38 419 - Normal
03/25/2026 05 AM PDT 25.38 419 0 Normal
03/25/2026 06 AM PDT 25.37 416 - Normal
03/25/2026 07 AM PDT 25.35 410 - Normal
03/25/2026 08 AM PDT 25.38 419 + Normal
03/25/2026 09 AM PDT 25.38 419 0 Normal
03/25/2026 10 AM PDT 25.37 416 - Normal
03/25/2026 11 AM PDT 25.39 423 + Normal
03/25/2026 12 PM PDT 25.39 423 0 Normal
03/25/2026 01 PM PDT 25.40 426 + Normal
03/25/2026 02 PM PDT 25.40 426 0 Normal
03/25/2026 03 PM PDT 25.38 419 - Normal
03/25/2026 04 PM PDT 25.38 419 0 Normal
03/25/2026 05 PM PDT 25.39 423 + Normal
03/25/2026 06 PM PDT 25.38 419 - Normal
03/25/2026 07 PM PDT 25.39 423 + Normal
03/25/2026 08 PM PDT 25.38 419 - Normal
03/25/2026 09 PM PDT 25.38 419 0 Normal
03/25/2026 10 PM PDT 25.38 419 0 Normal
03/25/2026 11 PM PDT 25.37 416 - Normal
03/26/2026 12 AM PDT 25.37 416 0 Normal
03/26/2026 01 AM PDT 25.36 413 - Normal
03/26/2026 02 AM PDT 25.37 416 + Normal
03/26/2026 03 AM PDT 25.37 416 0 Normal
03/26/2026 04 AM PDT 25.36 413 - Normal
03/26/2026 05 AM PDT 25.36 413 0 Normal
03/26/2026 06 AM PDT 25.36 413 0 Normal
03/26/2026 07 AM PDT 25.35 410 - Normal
03/26/2026 08 AM PDT 25.36 413 + Normal
03/26/2026 09 AM PDT 25.35 410 - Normal
03/26/2026 10 AM PDT 25.35 410 0 Normal
03/26/2026 11 AM PDT 25.36 413 + Normal
03/26/2026 12 PM PDT 25.36 413 0 Normal
03/26/2026 01 PM PDT 25.37 416 + Normal
03/26/2026 02 PM PDT 25.37 416 0 Normal
03/26/2026 03 PM PDT 25.38 419 + Normal
03/26/2026 04 PM PDT 25.37 416 - Normal
03/26/2026 05 PM PDT 25.37 416 0 Normal
03/26/2026 06 PM PDT 25.36 413 - Normal
03/26/2026 07 PM PDT 25.36 413 0 Normal
03/26/2026 08 PM PDT 25.34 407 - Normal
03/26/2026 09 PM PDT 25.35 410 + Normal
03/26/2026 10 PM PDT 25.35 410 0 Normal
03/26/2026 11 PM PDT 25.34 407 - Normal
03/27/2026 12 AM PDT 25.34 407 0 Normal
03/27/2026 01 AM PDT 25.34 407 0 Normal
03/27/2026 02 AM PDT 25.35 410 + Normal
03/27/2026 03 AM PDT 25.33 403 - Normal
03/27/2026 04 AM PDT 25.34 407 + Normal
03/27/2026 05 AM PDT 25.33 403 - Normal
03/27/2026 06 AM PDT 25.32 400 - Normal
03/27/2026 07 AM PDT 25.32 400 0 Normal
03/27/2026 08 AM PDT 25.32 400 0 Normal
03/27/2026 09 AM PDT 25.33 403 + Normal
03/27/2026 10 AM PDT 25.36 413 + Normal
03/27/2026 11 AM PDT 25.37 416 + Normal
03/27/2026 12 PM PDT 25.36 413 - Normal
03/27/2026 01 PM PDT 25.35 410 - Normal
03/27/2026 02 PM PDT 25.34 407 - Normal
03/27/2026 03 PM PDT 25.35 410 + Normal
03/27/2026 04 PM PDT 25.34 407 - Normal
03/27/2026 05 PM PDT 25.35 410 + Normal
03/27/2026 06 PM PDT 25.34 407 - Normal
03/27/2026 07 PM PDT 25.34 407 0 Normal
03/27/2026 08 PM PDT 25.33 403 - Normal
03/27/2026 09 PM PDT 25.32 400 - Normal
03/27/2026 10 PM PDT 25.33 403 + Normal
03/27/2026 11 PM PDT 25.32 400 - Normal
03/28/2026 12 AM PDT 25.32 400 0 Normal
03/28/2026 01 AM PDT 25.31 397 - Normal
03/28/2026 02 AM PDT 25.31 397 0 Normal
03/28/2026 03 AM PDT 25.30 394 - Normal
03/28/2026 04 AM PDT 25.30 394 0 Normal
03/28/2026 05 AM PDT 25.31 397 + Normal
03/28/2026 06 AM PDT 25.31 397 0 Normal
03/28/2026 07 AM PDT 25.31 397 0 Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
03/28/2026 08 AM PDT 25.30 394 Normal
03/28/2026 09 AM PDT 25.30 394 0 Normal
03/28/2026 10 AM PDT 25.30 394 0 Normal
03/28/2026 11 AM PDT 25.30 394 0 Normal
03/28/2026 12 PM PDT 25.30 394 0 Normal
03/28/2026 01 PM PDT 25.30 394 0 Normal
03/28/2026 02 PM PDT 25.30 394 0 Normal
03/28/2026 03 PM PDT 25.30 394 0 Normal
03/28/2026 04 PM PDT 25.30 394 0 Normal
03/28/2026 05 PM PDT 25.29 391 - Normal
03/28/2026 06 PM PDT 25.29 391 0 Normal
03/28/2026 07 PM PDT 25.29 391 0 Normal
03/28/2026 08 PM PDT 25.29 391 0 Normal
03/28/2026 09 PM PDT 25.29 391 0 Normal
03/28/2026 10 PM PDT 25.29 391 0 Normal
03/28/2026 11 PM PDT 25.29 391 0 Normal
03/29/2026 12 AM PDT 25.29 391 0 Normal
03/29/2026 01 AM PDT 25.29 391 0 Normal
03/29/2026 02 AM PDT 25.29 391 0 Normal
03/29/2026 03 AM PDT 25.28 388 - Normal
03/29/2026 04 AM PDT 25.28 388 0 Normal
03/29/2026 05 AM PDT 25.28 388 0 Normal
03/29/2026 06 AM PDT 25.28 388 0 Normal
03/29/2026 07 AM PDT 25.28 388 0 Normal
03/29/2026 08 AM PDT 25.28 388 0 Normal
03/29/2026 09 AM PDT 25.28 388 0 Normal
03/29/2026 10 AM PDT 25.28 388 0 Normal
03/29/2026 11 AM PDT 25.28 388 0 Normal
03/29/2026 12 PM PDT 25.27 385 - Normal
03/29/2026 01 PM PDT 25.27 385 0 Normal
03/29/2026 02 PM PDT 25.27 385 0 Normal
03/29/2026 03 PM PDT 25.27 385 0 Normal
03/29/2026 04 PM PDT 25.27 385 0 Normal
03/29/2026 05 PM PDT 25.27 385 0 Normal
03/29/2026 06 PM PDT 25.27 385 0 Normal
03/29/2026 07 PM PDT 25.27 385 0 Normal
03/29/2026 08 PM PDT 25.27 385 0 Normal
03/29/2026 09 PM PDT 25.27 385 0 Normal
03/29/2026 10 PM PDT 25.27 385 0 Normal
03/29/2026 11 PM PDT 25.27 385 0 Normal
03/30/2026 12 AM PDT 25.27 385 0 Normal
03/30/2026 01 AM PDT 25.27 385 0 Normal
03/30/2026 02 AM PDT 25.26 382 - Normal
03/30/2026 03 AM PDT 25.26 382 0 Normal
03/30/2026 04 AM PDT 25.26 382 0 Normal
03/30/2026 05 AM PDT 25.26 382 0 Normal
03/30/2026 06 AM PDT 25.26 382 0 Normal
03/30/2026 07 AM PDT 25.26 382 0 Normal
03/30/2026 08 AM PDT 25.26 382 0 Normal
03/30/2026 09 AM PDT 25.26 382 0 Normal
03/30/2026 10 AM PDT 25.26 382 0 Normal
03/30/2026 11 AM PDT 25.26 382 0 Normal
03/30/2026 12 PM PDT 25.26 382 0 Normal
03/30/2026 01 PM PDT 25.26 382 0 Normal
03/30/2026 02 PM PDT 25.25 379 - Normal
03/30/2026 03 PM PDT 25.25 379 0 Normal
03/30/2026 04 PM PDT 25.25 379 0 Normal
03/30/2026 05 PM PDT 25.25 379 0 Normal
03/30/2026 06 PM PDT 25.25 379 0 Normal
03/30/2026 07 PM PDT 25.25 379 0 Normal
03/30/2026 08 PM PDT 25.25 379 0 Normal
03/30/2026 09 PM PDT 25.25 379 0 Normal
03/30/2026 10 PM PDT 25.25 379 0 Normal
03/30/2026 11 PM PDT 25.25 379 0 Normal
03/31/2026 12 AM PDT 25.25 379 0 Normal
03/31/2026 01 AM PDT 25.25 379 0 Normal
03/31/2026 02 AM PDT 25.25 379 0 Normal
03/31/2026 03 AM PDT 25.25 379 0 Normal
03/31/2026 04 AM PDT 25.25 379 0 Normal
03/31/2026 05 AM PDT 25.24 375 - Normal
03/31/2026 06 AM PDT 25.24 375 0 Normal
03/31/2026 07 AM PDT 25.24 375 0 Normal
03/31/2026 08 AM PDT 25.24 375 0 Normal
03/31/2026 09 AM PDT 25.24 375 0 Normal
03/31/2026 10 AM PDT 25.24 375 0 Normal
03/31/2026 11 AM PDT 25.24 375 0 Normal
03/31/2026 12 PM PDT 25.24 375 0 Normal
03/31/2026 01 PM PDT 25.24 375 0 Normal
03/31/2026 02 PM PDT 25.24 375 0 Normal
03/31/2026 03 PM PDT 25.24 375 0 Normal
03/31/2026 04 PM PDT 25.24 375 0 Normal
03/31/2026 05 PM PDT 25.24 375 0 Normal
03/31/2026 06 PM PDT 25.23 372 - Normal
03/31/2026 07 PM PDT 25.23 372 0 Normal
03/31/2026 08 PM PDT 25.23 372 0 Normal
03/31/2026 09 PM PDT 25.23 372 0 Normal
03/31/2026 10 PM PDT 25.23 372 0 Normal
03/31/2026 11 PM PDT 25.23 372 0 Normal
04/01/2026 12 AM PDT 25.23 372 0 Normal
04/01/2026 01 AM PDT 25.23 372 0 Normal
04/01/2026 02 AM PDT 25.23 372 0 Normal
04/01/2026 03 AM PDT 25.23 372 0 Normal
04/01/2026 04 AM PDT 25.23 372 0 Normal
04/01/2026 05 AM PDT 25.23 372 0 Normal
04/01/2026 06 AM PDT 25.23 372 0 Normal
04/01/2026 07 AM PDT 25.23 372 0 Normal
04/01/2026 08 AM PDT 25.23 372 0 Normal
04/01/2026 09 AM PDT 25.23 372 0 Normal
04/01/2026 10 AM PDT 25.23 372 0 Normal
04/01/2026 11 AM PDT 25.22 369 - Normal
04/01/2026 12 PM PDT 25.22 369 0 Normal
04/01/2026 01 PM PDT 25.22 369 0 Normal
04/01/2026 02 PM PDT 25.22 369 0 Normal
04/01/2026 03 PM PDT 25.22 369 0 Normal
04/01/2026 04 PM PDT 25.22 369 0 Normal
04/01/2026 05 PM PDT 25.22 369 0 Normal
04/01/2026 06 PM PDT 25.23 372 + Normal
04/01/2026 07 PM PDT 25.23 372 0 Normal
04/01/2026 08 PM PDT 25.23 372 0 Normal
04/01/2026 09 PM PDT 25.23 372 0 Normal
04/01/2026 10 PM PDT 25.23 372 0 Normal
04/01/2026 11 PM PDT 25.23 372 0 Normal
04/02/2026 12 AM PDT 25.24 375 + Normal
04/02/2026 01 AM PDT 25.24 375 0 Normal
04/02/2026 02 AM PDT 25.24 375 0 Normal
04/02/2026 03 AM PDT 25.25 379 + Normal
04/02/2026 04 AM PDT 25.25 379 0 Normal
04/02/2026 05 AM PDT 25.25 379 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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