RUSSIAN RIVER - HEALDSBURG (HEAC1)
Latitude: 38.61º NLongitude: 122.84º WElevation: 77 FeetForecast Type: Official Location
Location: Sonoma County in CaliforniaBulletin Group: Russian NapaRiver Group: Russian Napa
Issuance Time: Apr 30 2026 at 8:12 AM PDTNext Issuance: May 01 2026 at 9:00 AM PDT
Action/Monitor: 20.0 FeetMinor Flood: 23.0 FeetModerate Flood: 27.0 FeetMajor Flood: 29.0 Feet

# Tabular Observed and Forecast Hydrograph Information
#
# Location: Russian River - Healdsburg (HEAC1)
#
# File Generation Time:  04/30/2026 at 08:12 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  04/25/2026 at 08:00 AM PDT
# Maximum Observed Stage:                       1.12 Feet
# Maximum Observed Flow:                        507 cfs
#
# Earliest Date & Time of Maximum Forecast:     04/30/2026 at 08:00 AM PDT
# Maximum Forecast Stage:                       0.74 Feet
# Maximum Forecast Flow:                        373 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  04/25/2026 08 AM PDT            1.12            507                        Normal
  04/25/2026 09 AM PDT            1.11            503         -              Normal
  04/25/2026 10 AM PDT            1.10            500         -              Normal
  04/25/2026 11 AM PDT            1.10            500         0              Normal
  04/25/2026 12 PM PDT            1.10            500         0              Normal
  04/25/2026 01 PM PDT            1.09            496         -              Normal
  04/25/2026 02 PM PDT            1.09            496         0              Normal
  04/25/2026 03 PM PDT            1.08            492         -              Normal
  04/25/2026 04 PM PDT            1.08            492         0              Normal
  04/25/2026 05 PM PDT            1.08            492         0              Normal
  04/25/2026 06 PM PDT            1.07            489         -              Normal
  04/25/2026 07 PM PDT            1.07            489         0              Normal
  04/25/2026 08 PM PDT            1.06            485         -              Normal
  04/25/2026 09 PM PDT            1.06            485         0              Normal
  04/25/2026 10 PM PDT            1.05            481         -              Normal
  04/25/2026 11 PM PDT            1.05            481         0              Normal
  04/26/2026 12 AM PDT            1.05            481         0              Normal
  04/26/2026 01 AM PDT            1.04            478         -              Normal
  04/26/2026 02 AM PDT            1.04            478         0              Normal
  04/26/2026 03 AM PDT            1.03            474         -              Normal
  04/26/2026 04 AM PDT            1.03            474         0              Normal
  04/26/2026 05 AM PDT            1.03            474         0              Normal
  04/26/2026 06 AM PDT            1.03            474         0              Normal
  04/26/2026 07 AM PDT            1.03            474         0              Normal
  04/26/2026 08 AM PDT            1.02            470         -              Normal
  04/26/2026 09 AM PDT            1.02            470         0              Normal
  04/26/2026 10 AM PDT            1.02            470         0              Normal
  04/26/2026 11 AM PDT            1.01            467         -              Normal
  04/26/2026 12 PM PDT            1.00            463         -              Normal
  04/26/2026 01 PM PDT            1.00            463         0              Normal
  04/26/2026 02 PM PDT            1.01            467         +              Normal
  04/26/2026 03 PM PDT            1.00            463         -              Normal
  04/26/2026 04 PM PDT            1.00            463         0              Normal
  04/26/2026 05 PM PDT            0.99            459         -              Normal
  04/26/2026 06 PM PDT            0.99            459         0              Normal
  04/26/2026 07 PM PDT            0.99            459         0              Normal
  04/26/2026 08 PM PDT            0.98            456         -              Normal
  04/26/2026 09 PM PDT            0.98            456         0              Normal
  04/26/2026 10 PM PDT            0.97            452         -              Normal
  04/26/2026 11 PM PDT            0.97            452         0              Normal
  04/27/2026 12 AM PDT            0.97            452         0              Normal
  04/27/2026 01 AM PDT            0.96            449         -              Normal
  04/27/2026 02 AM PDT            0.95            445         -              Normal
  04/27/2026 03 AM PDT            0.95            445         0              Normal
  04/27/2026 04 AM PDT            0.95            445         0              Normal
  04/27/2026 05 AM PDT            0.95            445         0              Normal
  04/27/2026 06 AM PDT            0.95            445         0              Normal
  04/27/2026 07 AM PDT            0.94            442         -              Normal
  04/27/2026 08 AM PDT            0.94            442         0              Normal
  04/27/2026 09 AM PDT            0.94            442         0              Normal
  04/27/2026 10 AM PDT            0.93            438         -              Normal
  04/27/2026 11 AM PDT            0.93            438         0              Normal
  04/27/2026 12 PM PDT            0.93            438         0              Normal
  04/27/2026 01 PM PDT            0.93            438         0              Normal
  04/27/2026 02 PM PDT            0.92            435         -              Normal
  04/27/2026 03 PM PDT            0.92            435         0              Normal
  04/27/2026 04 PM PDT            0.91            431         -              Normal
  04/27/2026 05 PM PDT            0.91            431         0              Normal
  04/27/2026 06 PM PDT            0.91            431         0              Normal
  04/27/2026 07 PM PDT            0.90            428         -              Normal
  04/27/2026 08 PM PDT            0.90            428         0              Normal
  04/27/2026 09 PM PDT            0.90            428         0              Normal
  04/27/2026 10 PM PDT            0.89            424         -              Normal
  04/27/2026 11 PM PDT            0.89            424         0              Normal
  04/28/2026 12 AM PDT            0.88            421         -              Normal
  04/28/2026 01 AM PDT            0.88            421         0              Normal
  04/28/2026 02 AM PDT            0.88            421         0              Normal
  04/28/2026 03 AM PDT            0.87            417         -              Normal
  04/28/2026 04 AM PDT            0.87            417         0              Normal
  04/28/2026 05 AM PDT            0.87            417         0              Normal
  04/28/2026 06 AM PDT            0.87            417         0              Normal
  04/28/2026 07 AM PDT            0.87            417         0              Normal
  04/28/2026 08 AM PDT            0.86            414         -              Normal
  04/28/2026 09 AM PDT            0.86            414         0              Normal
  04/28/2026 10 AM PDT            0.86            414         0              Normal
  04/28/2026 11 AM PDT            0.85            410         -              Normal
  04/28/2026 12 PM PDT            0.86            414         +              Normal
  04/28/2026 01 PM PDT            0.86            414         0              Normal
  04/28/2026 02 PM PDT            0.85            410         -              Normal
  04/28/2026 03 PM PDT            0.85            410         0              Normal
  04/28/2026 04 PM PDT            0.85            410         0              Normal
  04/28/2026 05 PM PDT            0.85            410         0              Normal
  04/28/2026 06 PM PDT            0.84            407         -              Normal
  04/28/2026 07 PM PDT            0.84            407         0              Normal
  04/28/2026 08 PM PDT            0.84            407         0              Normal
  04/28/2026 09 PM PDT            0.83            404         -              Normal
  04/28/2026 10 PM PDT            0.83            404         0              Normal
  04/28/2026 11 PM PDT            0.83            404         0              Normal
  04/29/2026 12 AM PDT            0.82            400         -              Normal
  04/29/2026 01 AM PDT            0.82            400         0              Normal
  04/29/2026 02 AM PDT            0.81            397         -              Normal
  04/29/2026 03 AM PDT            0.81            397         0              Normal
  04/29/2026 04 AM PDT            0.81            397         0              Normal
  04/29/2026 05 AM PDT            0.81            397         0              Normal
  04/29/2026 06 AM PDT            0.80            393         -              Normal
  04/29/2026 07 AM PDT            0.80            393         0              Normal
  04/29/2026 08 AM PDT            0.80            393         0              Normal
  04/29/2026 09 AM PDT            0.80            393         0              Normal
  04/29/2026 10 AM PDT            0.80            393         0              Normal
  04/29/2026 11 AM PDT            0.80            393         0              Normal
  04/29/2026 12 PM PDT            0.80            393         0              Normal
  04/29/2026 01 PM PDT            0.80            393         0              Normal
  04/29/2026 02 PM PDT            0.79            390         -              Normal
  04/29/2026 03 PM PDT            0.79            390         0              Normal
  04/29/2026 04 PM PDT            0.79            390         0              Normal
  04/29/2026 05 PM PDT            0.78            387         -              Normal
  04/29/2026 06 PM PDT            0.79            390         +              Normal
  04/29/2026 07 PM PDT            0.79            390         0              Normal
  04/29/2026 08 PM PDT            0.78            387         -              Normal
  04/29/2026 09 PM PDT            0.77            383         -              Normal
  04/29/2026 10 PM PDT            0.77            383         0              Normal
  04/29/2026 11 PM PDT            0.77            383         0              Normal
  04/30/2026 12 AM PDT            0.76            380         -              Normal
  04/30/2026 01 AM PDT            0.76            380         0              Normal
  04/30/2026 02 AM PDT            0.76            380         0              Normal
  04/30/2026 03 AM PDT            0.75            377         -              Normal
  04/30/2026 04 AM PDT            0.75            377         0              Normal
  04/30/2026 05 AM PDT            0.75            377         0              Normal
  04/30/2026 06 AM PDT            0.75            377         0              Normal
  04/30/2026 07 AM PDT            0.74            373         -              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  04/30/2026 08 AM PDT            0.74            373                        Normal
  04/30/2026 09 AM PDT            0.74            373         0              Normal
  04/30/2026 10 AM PDT            0.73            370         -              Normal
  04/30/2026 11 AM PDT            0.73            370         0              Normal
  04/30/2026 12 PM PDT            0.73            370         0              Normal
  04/30/2026 01 PM PDT            0.72            367         -              Normal
  04/30/2026 02 PM PDT            0.72            367         0              Normal
  04/30/2026 03 PM PDT            0.72            367         0              Normal
  04/30/2026 04 PM PDT            0.72            367         0              Normal
  04/30/2026 05 PM PDT            0.72            367         0              Normal
  04/30/2026 06 PM PDT            0.71            364         -              Normal
  04/30/2026 07 PM PDT            0.71            364         0              Normal
  04/30/2026 08 PM PDT            0.71            364         0              Normal
  04/30/2026 09 PM PDT            0.71            364         0              Normal
  04/30/2026 10 PM PDT            0.71            364         0              Normal
  04/30/2026 11 PM PDT            0.70            360         -              Normal
  05/01/2026 12 AM PDT            0.70            360         0              Normal
  05/01/2026 01 AM PDT            0.70            360         0              Normal
  05/01/2026 02 AM PDT            0.70            360         0              Normal
  05/01/2026 03 AM PDT            0.70            360         0              Normal
  05/01/2026 04 AM PDT            0.70            360         0              Normal
  05/01/2026 05 AM PDT            0.70            360         0              Normal
  05/01/2026 06 AM PDT            0.70            360         0              Normal
  05/01/2026 07 AM PDT            0.70            360         0              Normal
  05/01/2026 08 AM PDT            0.70            360         0              Normal
  05/01/2026 09 AM PDT            0.69            357         -              Normal
  05/01/2026 10 AM PDT            0.69            357         0              Normal
  05/01/2026 11 AM PDT            0.69            357         0              Normal
  05/01/2026 12 PM PDT            0.69            357         0              Normal
  05/01/2026 01 PM PDT            0.69            357         0              Normal
  05/01/2026 02 PM PDT            0.69            357         0              Normal
  05/01/2026 03 PM PDT            0.69            357         0              Normal
  05/01/2026 04 PM PDT            0.69            357         0              Normal
  05/01/2026 05 PM PDT            0.68            354         -              Normal
  05/01/2026 06 PM PDT            0.68            354         0              Normal
  05/01/2026 07 PM PDT            0.68            354         0              Normal
  05/01/2026 08 PM PDT            0.68            354         0              Normal
  05/01/2026 09 PM PDT            0.68            354         0              Normal
  05/01/2026 10 PM PDT            0.68            354         0              Normal
  05/01/2026 11 PM PDT            0.67            351         -              Normal
  05/02/2026 12 AM PDT            0.67            351         0              Normal
  05/02/2026 01 AM PDT            0.67            351         0              Normal
  05/02/2026 02 AM PDT            0.67            351         0              Normal
  05/02/2026 03 AM PDT            0.67            351         0              Normal
  05/02/2026 04 AM PDT            0.67            351         0              Normal
  05/02/2026 05 AM PDT            0.66            348         -              Normal
  05/02/2026 06 AM PDT            0.66            348         0              Normal
  05/02/2026 07 AM PDT            0.66            348         0              Normal
  05/02/2026 08 AM PDT            0.66            348         0              Normal
  05/02/2026 09 AM PDT            0.66            348         0              Normal
  05/02/2026 10 AM PDT            0.66            348         0              Normal
  05/02/2026 11 AM PDT            0.66            348         0              Normal
  05/02/2026 12 PM PDT            0.65            344         -              Normal
  05/02/2026 01 PM PDT            0.65            344         0              Normal
  05/02/2026 02 PM PDT            0.65            344         0              Normal
  05/02/2026 03 PM PDT            0.65            344         0              Normal
  05/02/2026 04 PM PDT            0.65            344         0              Normal
  05/02/2026 05 PM PDT            0.65            344         0              Normal
  05/02/2026 06 PM PDT            0.64            341         -              Normal
  05/02/2026 07 PM PDT            0.64            341         0              Normal
  05/02/2026 08 PM PDT            0.64            341         0              Normal
  05/02/2026 09 PM PDT            0.64            341         0              Normal
  05/02/2026 10 PM PDT            0.64            341         0              Normal
  05/02/2026 11 PM PDT            0.64            341         0              Normal
  05/03/2026 12 AM PDT            0.63            338         -              Normal
  05/03/2026 01 AM PDT            0.63            338         0              Normal
  05/03/2026 02 AM PDT            0.63            338         0              Normal
  05/03/2026 03 AM PDT            0.63            338         0              Normal
  05/03/2026 04 AM PDT            0.63            338         0              Normal
  05/03/2026 05 AM PDT            0.63            338         0              Normal
  05/03/2026 06 AM PDT            0.62            335         -              Normal
  05/03/2026 07 AM PDT            0.62            335         0              Normal
  05/03/2026 08 AM PDT            0.62            335         0              Normal
  05/03/2026 09 AM PDT            0.62            335         0              Normal
  05/03/2026 10 AM PDT            0.62            335         0              Normal
  05/03/2026 11 AM PDT            0.62            335         0              Normal
  05/03/2026 12 PM PDT            0.61            332         -              Normal
  05/03/2026 01 PM PDT            0.61            332         0              Normal
  05/03/2026 02 PM PDT            0.61            332         0              Normal
  05/03/2026 03 PM PDT            0.61            332         0              Normal
  05/03/2026 04 PM PDT            0.61            332         0              Normal
  05/03/2026 05 PM PDT            0.61            332         0              Normal
  05/03/2026 06 PM PDT            0.61            332         0              Normal
  05/03/2026 07 PM PDT            0.60            329         -              Normal
  05/03/2026 08 PM PDT            0.60            329         0              Normal
  05/03/2026 09 PM PDT            0.60            329         0              Normal
  05/03/2026 10 PM PDT            0.60            329         0              Normal
  05/03/2026 11 PM PDT            0.60            329         0              Normal
  05/04/2026 12 AM PDT            0.60            329         0              Normal
  05/04/2026 01 AM PDT            0.60            329         0              Normal
  05/04/2026 02 AM PDT            0.59            326         -              Normal
  05/04/2026 03 AM PDT            0.59            326         0              Normal
  05/04/2026 04 AM PDT            0.59            326         0              Normal
  05/04/2026 05 AM PDT            0.59            326         0              Normal
  05/04/2026 06 AM PDT            0.59            326         0              Normal
  05/04/2026 07 AM PDT            0.59            326         0              Normal
  05/04/2026 08 AM PDT            0.59            326         0              Normal
  05/04/2026 09 AM PDT            0.58            323         -              Normal
  05/04/2026 10 AM PDT            0.58            323         0              Normal
  05/04/2026 11 AM PDT            0.58            323         0              Normal
  05/04/2026 12 PM PDT            0.58            323         0              Normal
  05/04/2026 01 PM PDT            0.58            323         0              Normal
  05/04/2026 02 PM PDT            0.58            323         0              Normal
  05/04/2026 03 PM PDT            0.58            323         0              Normal
  05/04/2026 04 PM PDT            0.57            319         -              Normal
  05/04/2026 05 PM PDT            0.57            319         0              Normal
  05/04/2026 06 PM PDT            0.57            319         0              Normal
  05/04/2026 07 PM PDT            0.57            319         0              Normal
  05/04/2026 08 PM PDT            0.57            319         0              Normal
  05/04/2026 09 PM PDT            0.57            319         0              Normal
  05/04/2026 10 PM PDT            0.57            319         0              Normal
  05/04/2026 11 PM PDT            0.56            316         -              Normal
  05/05/2026 12 AM PDT            0.56            316         0              Normal
  05/05/2026 01 AM PDT            0.56            316         0              Normal
  05/05/2026 02 AM PDT            0.56            316         0              Normal
  05/05/2026 03 AM PDT            0.56            316         0              Normal
  05/05/2026 04 AM PDT            0.56            316         0              Normal
  05/05/2026 05 AM PDT            0.56            316         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.