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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 17 2026 at 1:04 PM PDT | Next Issuance: | Mar 18 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: 03/17/2026 at 01:06 PM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 03/12/2026 at 01:00 PM PDT
# Maximum Observed Stage: 26.27 Feet
# Maximum Observed Flow: 804 cfs
#
# Earliest Date & Time of Maximum Forecast: 03/17/2026 at 01:00 PM PDT
# Maximum Forecast Stage: 25.71 Feet
# Maximum Forecast Flow: 581 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
03/12/2026 01 PM PDT 26.27 804 Normal
03/12/2026 02 PM PDT 26.26 800 - Normal
03/12/2026 03 PM PDT 26.26 800 0 Normal
03/12/2026 04 PM PDT 26.25 795 - Normal
03/12/2026 05 PM PDT 26.25 795 0 Normal
03/12/2026 06 PM PDT 26.24 791 - Normal
03/12/2026 07 PM PDT 26.23 787 - Normal
03/12/2026 08 PM PDT 26.23 787 0 Normal
03/12/2026 09 PM PDT 26.22 783 - Normal
03/12/2026 10 PM PDT 26.22 783 0 Normal
03/12/2026 11 PM PDT 26.21 778 - Normal
03/13/2026 12 AM PDT 26.21 778 0 Normal
03/13/2026 01 AM PDT 26.20 774 - Normal
03/13/2026 02 AM PDT 26.19 770 - Normal
03/13/2026 03 AM PDT 26.17 762 - Normal
03/13/2026 04 AM PDT 26.17 762 0 Normal
03/13/2026 05 AM PDT 26.16 758 - Normal
03/13/2026 06 AM PDT 26.15 753 - Normal
03/13/2026 07 AM PDT 26.14 749 - Normal
03/13/2026 08 AM PDT 26.14 749 0 Normal
03/13/2026 09 AM PDT 26.14 749 0 Normal
03/13/2026 10 AM PDT 26.13 745 - Normal
03/13/2026 11 AM PDT 26.13 745 0 Normal
03/13/2026 12 PM PDT 26.14 749 + Normal
03/13/2026 01 PM PDT 26.13 745 - Normal
03/13/2026 02 PM PDT 26.12 741 - Normal
03/13/2026 03 PM PDT 26.12 741 0 Normal
03/13/2026 04 PM PDT 26.11 737 - Normal
03/13/2026 05 PM PDT 26.11 737 0 Normal
03/13/2026 06 PM PDT 26.10 733 - Normal
03/13/2026 07 PM PDT 26.10 733 0 Normal
03/13/2026 08 PM PDT 26.09 729 - Normal
03/13/2026 09 PM PDT 26.09 729 0 Normal
03/13/2026 10 PM PDT 26.09 729 0 Normal
03/13/2026 11 PM PDT 26.08 724 - Normal
03/14/2026 12 AM PDT 26.08 724 0 Normal
03/14/2026 01 AM PDT 26.06 716 - Normal
03/14/2026 02 AM PDT 26.06 716 0 Normal
03/14/2026 03 AM PDT 26.06 716 0 Normal
03/14/2026 04 AM PDT 26.05 712 - Normal
03/14/2026 05 AM PDT 26.05 712 0 Normal
03/14/2026 06 AM PDT 26.04 708 - Normal
03/14/2026 07 AM PDT 26.04 708 0 Normal
03/14/2026 08 AM PDT 26.03 704 - Normal
03/14/2026 09 AM PDT 26.02 700 - Normal
03/14/2026 10 AM PDT 26.01 696 - Normal
03/14/2026 11 AM PDT 26.01 696 0 Normal
03/14/2026 12 PM PDT 26.00 692 - Normal
03/14/2026 01 PM PDT 26.01 696 + Normal
03/14/2026 02 PM PDT 26.01 696 0 Normal
03/14/2026 03 PM PDT 26.00 692 - Normal
03/14/2026 04 PM PDT 26.00 692 0 Normal
03/14/2026 05 PM PDT 25.99 688 - Normal
03/14/2026 06 PM PDT 25.98 684 - Normal
03/14/2026 07 PM PDT 25.98 684 0 Normal
03/14/2026 08 PM PDT 25.97 680 - Normal
03/14/2026 09 PM PDT 25.97 680 0 Normal
03/14/2026 10 PM PDT 25.96 676 - Normal
03/14/2026 11 PM PDT 25.96 676 0 Normal
03/15/2026 12 AM PDT 25.95 672 - Normal
03/15/2026 01 AM PDT 25.95 672 0 Normal
03/15/2026 02 AM PDT 25.95 672 0 Normal
03/15/2026 03 AM PDT 25.94 668 - Normal
03/15/2026 04 AM PDT 25.93 664 - Normal
03/15/2026 05 AM PDT 25.92 660 - Normal
03/15/2026 06 AM PDT 25.92 660 0 Normal
03/15/2026 07 AM PDT 25.92 660 0 Normal
03/15/2026 08 AM PDT 25.91 656 - Normal
03/15/2026 09 AM PDT 25.91 656 0 Normal
03/15/2026 10 AM PDT 25.91 656 0 Normal
03/15/2026 11 AM PDT 25.91 656 0 Normal
03/15/2026 12 PM PDT 25.91 656 0 Normal
03/15/2026 01 PM PDT 25.90 653 - Normal
03/15/2026 02 PM PDT 25.91 656 + Normal
03/15/2026 03 PM PDT 25.90 653 - Normal
03/15/2026 04 PM PDT 25.90 653 0 Normal
03/15/2026 05 PM PDT 25.88 645 - Normal
03/15/2026 06 PM PDT 25.88 645 0 Normal
03/15/2026 07 PM PDT 25.87 641 - Normal
03/15/2026 08 PM PDT 25.87 641 0 Normal
03/15/2026 09 PM PDT 25.86 637 - Normal
03/15/2026 10 PM PDT 25.85 633 - Normal
03/15/2026 11 PM PDT 25.85 633 0 Normal
03/16/2026 12 AM PDT 25.84 630 - Normal
03/16/2026 01 AM PDT 25.83 626 - Normal
03/16/2026 02 AM PDT 25.83 626 0 Normal
03/16/2026 03 AM PDT 25.83 626 0 Normal
03/16/2026 04 AM PDT 25.83 626 0 Normal
03/16/2026 05 AM PDT 25.82 622 - Normal
03/16/2026 06 AM PDT 25.81 618 - Normal
03/16/2026 07 AM PDT 25.82 622 + Normal
03/16/2026 08 AM PDT 25.80 615 - Normal
03/16/2026 09 AM PDT 25.80 615 0 Normal
03/16/2026 10 AM PDT 25.80 615 0 Normal
03/16/2026 11 AM PDT 25.80 615 0 Normal
03/16/2026 12 PM PDT 25.79 611 - Normal
03/16/2026 01 PM PDT 25.81 618 + Normal
03/16/2026 02 PM PDT 25.81 618 0 Normal
03/16/2026 03 PM PDT 25.80 615 - Normal
03/16/2026 04 PM PDT 25.80 615 0 Normal
03/16/2026 05 PM PDT 25.80 615 0 Normal
03/16/2026 06 PM PDT 25.79 611 - Normal
03/16/2026 07 PM PDT 25.79 611 0 Normal
03/16/2026 08 PM PDT 25.77 603 - Normal
03/16/2026 09 PM PDT 25.77 603 0 Normal
03/16/2026 10 PM PDT 25.77 603 0 Normal
03/16/2026 11 PM PDT 25.76 600 - Normal
03/17/2026 12 AM PDT 25.77 603 + Normal
03/17/2026 01 AM PDT 25.76 600 - Normal
03/17/2026 02 AM PDT 25.74 592 - Normal
03/17/2026 03 AM PDT 25.74 592 0 Normal
03/17/2026 04 AM PDT 25.73 589 - Normal
03/17/2026 05 AM PDT 25.72 585 - Normal
03/17/2026 06 AM PDT 25.72 585 0 Normal
03/17/2026 07 AM PDT 25.71 581 - Normal
03/17/2026 08 AM PDT 25.71 581 0 Normal
03/17/2026 09 AM PDT 25.71 581 0 Normal
03/17/2026 10 AM PDT 25.72 585 + Normal
03/17/2026 11 AM PDT 25.71 581 - Normal
03/17/2026 12 PM PDT 25.71 581 0 Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
03/17/2026 01 PM PDT 25.71 581 Normal
03/17/2026 02 PM PDT 25.71 581 0 Normal
03/17/2026 03 PM PDT 25.71 581 0 Normal
03/17/2026 04 PM PDT 25.71 581 0 Normal
03/17/2026 05 PM PDT 25.71 581 0 Normal
03/17/2026 06 PM PDT 25.71 581 0 Normal
03/17/2026 07 PM PDT 25.71 581 0 Normal
03/17/2026 08 PM PDT 25.71 581 0 Normal
03/17/2026 09 PM PDT 25.71 581 0 Normal
03/17/2026 10 PM PDT 25.71 581 0 Normal
03/17/2026 11 PM PDT 25.71 581 0 Normal
03/18/2026 12 AM PDT 25.70 578 - Normal
03/18/2026 01 AM PDT 25.70 578 0 Normal
03/18/2026 02 AM PDT 25.70 578 0 Normal
03/18/2026 03 AM PDT 25.70 578 0 Normal
03/18/2026 04 AM PDT 25.70 578 0 Normal
03/18/2026 05 AM PDT 25.70 578 0 Normal
03/18/2026 06 AM PDT 25.70 578 0 Normal
03/18/2026 07 AM PDT 25.70 578 0 Normal
03/18/2026 08 AM PDT 25.69 574 - Normal
03/18/2026 09 AM PDT 25.69 574 0 Normal
03/18/2026 10 AM PDT 25.69 574 0 Normal
03/18/2026 11 AM PDT 25.69 574 0 Normal
03/18/2026 12 PM PDT 25.69 574 0 Normal
03/18/2026 01 PM PDT 25.68 570 - Normal
03/18/2026 02 PM PDT 25.68 570 0 Normal
03/18/2026 03 PM PDT 25.68 570 0 Normal
03/18/2026 04 PM PDT 25.68 570 0 Normal
03/18/2026 05 PM PDT 25.68 570 0 Normal
03/18/2026 06 PM PDT 25.68 570 0 Normal
03/18/2026 07 PM PDT 25.67 567 - Normal
03/18/2026 08 PM PDT 25.67 567 0 Normal
03/18/2026 09 PM PDT 25.67 567 0 Normal
03/18/2026 10 PM PDT 25.67 567 0 Normal
03/18/2026 11 PM PDT 25.67 567 0 Normal
03/19/2026 12 AM PDT 25.66 563 - Normal
03/19/2026 01 AM PDT 25.66 563 0 Normal
03/19/2026 02 AM PDT 25.66 563 0 Normal
03/19/2026 03 AM PDT 25.66 563 0 Normal
03/19/2026 04 AM PDT 25.66 563 0 Normal
03/19/2026 05 AM PDT 25.66 563 0 Normal
03/19/2026 06 AM PDT 25.65 559 - Normal
03/19/2026 07 AM PDT 25.65 559 0 Normal
03/19/2026 08 AM PDT 25.65 559 0 Normal
03/19/2026 09 AM PDT 25.65 559 0 Normal
03/19/2026 10 AM PDT 25.64 556 - Normal
03/19/2026 11 AM PDT 25.64 556 0 Normal
03/19/2026 12 PM PDT 25.64 556 0 Normal
03/19/2026 01 PM PDT 25.64 556 0 Normal
03/19/2026 02 PM PDT 25.64 556 0 Normal
03/19/2026 03 PM PDT 25.64 556 0 Normal
03/19/2026 04 PM PDT 25.64 556 0 Normal
03/19/2026 05 PM PDT 25.63 552 - Normal
03/19/2026 06 PM PDT 25.63 552 0 Normal
03/19/2026 07 PM PDT 25.63 552 0 Normal
03/19/2026 08 PM PDT 25.63 552 0 Normal
03/19/2026 09 PM PDT 25.63 552 0 Normal
03/19/2026 10 PM PDT 25.62 549 - Normal
03/19/2026 11 PM PDT 25.62 549 0 Normal
03/20/2026 12 AM PDT 25.62 549 0 Normal
03/20/2026 01 AM PDT 25.62 549 0 Normal
03/20/2026 02 AM PDT 25.62 549 0 Normal
03/20/2026 03 AM PDT 25.61 545 - Normal
03/20/2026 04 AM PDT 25.61 545 0 Normal
03/20/2026 05 AM PDT 25.61 545 0 Normal
03/20/2026 06 AM PDT 25.61 545 0 Normal
03/20/2026 07 AM PDT 25.61 545 0 Normal
03/20/2026 08 AM PDT 25.61 545 0 Normal
03/20/2026 09 AM PDT 25.61 545 0 Normal
03/20/2026 10 AM PDT 25.60 541 - Normal
03/20/2026 11 AM PDT 25.60 541 0 Normal
03/20/2026 12 PM PDT 25.60 541 0 Normal
03/20/2026 01 PM PDT 25.60 541 0 Normal
03/20/2026 02 PM PDT 25.60 541 0 Normal
03/20/2026 03 PM PDT 25.60 541 0 Normal
03/20/2026 04 PM PDT 25.59 538 - Normal
03/20/2026 05 PM PDT 25.59 538 0 Normal
03/20/2026 06 PM PDT 25.59 538 0 Normal
03/20/2026 07 PM PDT 25.59 538 0 Normal
03/20/2026 08 PM PDT 25.59 538 0 Normal
03/20/2026 09 PM PDT 25.59 538 0 Normal
03/20/2026 10 PM PDT 25.58 534 - Normal
03/20/2026 11 PM PDT 25.58 534 0 Normal
03/21/2026 12 AM PDT 25.58 534 0 Normal
03/21/2026 01 AM PDT 25.58 534 0 Normal
03/21/2026 02 AM PDT 25.58 534 0 Normal
03/21/2026 03 AM PDT 25.58 534 0 Normal
03/21/2026 04 AM PDT 25.57 531 - Normal
03/21/2026 05 AM PDT 25.57 531 0 Normal
03/21/2026 06 AM PDT 25.57 531 0 Normal
03/21/2026 07 AM PDT 25.57 531 0 Normal
03/21/2026 08 AM PDT 25.57 531 0 Normal
03/21/2026 09 AM PDT 25.57 531 0 Normal
03/21/2026 10 AM PDT 25.57 531 0 Normal
03/21/2026 11 AM PDT 25.56 527 - Normal
03/21/2026 12 PM PDT 25.56 527 0 Normal
03/21/2026 01 PM PDT 25.56 527 0 Normal
03/21/2026 02 PM PDT 25.56 527 0 Normal
03/21/2026 03 PM PDT 25.56 527 0 Normal
03/21/2026 04 PM PDT 25.56 527 0 Normal
03/21/2026 05 PM PDT 25.56 527 0 Normal
03/21/2026 06 PM PDT 25.55 524 - Normal
03/21/2026 07 PM PDT 25.55 524 0 Normal
03/21/2026 08 PM PDT 25.55 524 0 Normal
03/21/2026 09 PM PDT 25.55 524 0 Normal
03/21/2026 10 PM PDT 25.55 524 0 Normal
03/21/2026 11 PM PDT 25.55 524 0 Normal
03/22/2026 12 AM PDT 25.55 524 0 Normal
03/22/2026 01 AM PDT 25.54 520 - Normal
03/22/2026 02 AM PDT 25.54 520 0 Normal
03/22/2026 03 AM PDT 25.54 520 0 Normal
03/22/2026 04 AM PDT 25.54 520 0 Normal
03/22/2026 05 AM PDT 25.54 520 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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