National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service

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RUSSIAN RIVER - UKIAH (UKAC1)
Latitude: 39.20º NLongitude: 123.19º WElevation: 599 FeetForecast Type: Unofficial Location
Location: Mendocino County in CaliforniaBulletin Group: Russian NapaRiver Group: Russian Napa
Issuance Time: Apr 20 2026 at 6:54 AM PDTNext Issuance: Apr 21 2026 at 9:00 AM PDT
Action/Monitor: N/A Minor Flood: N/A Moderate Flood: N/A Major Flood: N/A


# Tabular Observed and Forecast Hydrograph Information
#
# Location: Russian River - Ukiah 3NNE (UKAC1)
#
# File Generation Time:  04/20/2026 at 06:55 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  04/15/2026 at 08:00 AM PDT
# Maximum Observed Stage:                       4.90 Feet
# Maximum Observed Flow:                        58 cfs
#
# Earliest Date & Time of Maximum Forecast:     04/21/2026 at 07:00 PM PDT
# Maximum Forecast Stage:                       6.99 Feet
# Maximum Forecast Flow:                        584 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  04/15/2026 06 AM PDT            4.90             58                Not Applicable
  04/15/2026 07 AM PDT            4.90             58         0      Not Applicable
  04/15/2026 08 AM PDT            4.90             58         0      Not Applicable
  04/15/2026 09 AM PDT            4.88             56         -      Not Applicable
  04/15/2026 10 AM PDT            4.88             56         0      Not Applicable
  04/15/2026 11 AM PDT            4.88             56         0      Not Applicable
  04/15/2026 12 PM PDT            4.88             56         0      Not Applicable
  04/15/2026 01 PM PDT            4.87             54         -      Not Applicable
  04/15/2026 02 PM PDT            4.87             54         0      Not Applicable
  04/15/2026 03 PM PDT            4.87             54         0      Not Applicable
  04/15/2026 04 PM PDT            4.85             52         -      Not Applicable
  04/15/2026 05 PM PDT            4.84             51         -      Not Applicable
  04/15/2026 06 PM PDT            4.84             51         0      Not Applicable
  04/15/2026 07 PM PDT            4.84             51         0      Not Applicable
  04/15/2026 08 PM PDT            4.84             51         0      Not Applicable
  04/15/2026 09 PM PDT            4.84             51         0      Not Applicable
  04/15/2026 10 PM PDT            4.83             50         -      Not Applicable
  04/15/2026 11 PM PDT            4.83             50         0      Not Applicable
  04/16/2026 12 AM PDT            4.81             48         -      Not Applicable
  04/16/2026 01 AM PDT            4.81             48         0      Not Applicable
  04/16/2026 02 AM PDT            4.81             48         0      Not Applicable
  04/16/2026 03 AM PDT            4.80             47         -      Not Applicable
  04/16/2026 04 AM PDT            4.81             48         +      Not Applicable
  04/16/2026 05 AM PDT            4.80             47         -      Not Applicable
  04/16/2026 06 AM PDT            4.80             47         0      Not Applicable
  04/16/2026 07 AM PDT            4.79             46         -      Not Applicable
  04/16/2026 08 AM PDT            4.79             46         0      Not Applicable
  04/16/2026 09 AM PDT            4.79             46         0      Not Applicable
  04/16/2026 10 AM PDT            4.79             46         0      Not Applicable
  04/16/2026 11 AM PDT            4.79             46         0      Not Applicable
  04/16/2026 12 PM PDT            4.79             46         0      Not Applicable
  04/16/2026 01 PM PDT            4.79             46         0      Not Applicable
  04/16/2026 02 PM PDT            4.79             46         0      Not Applicable
  04/16/2026 03 PM PDT            4.79             46         0      Not Applicable
  04/16/2026 04 PM PDT            4.78             45         -      Not Applicable
  04/16/2026 05 PM PDT            4.78             45         0      Not Applicable
  04/16/2026 06 PM PDT            4.77             44         -      Not Applicable
  04/16/2026 07 PM PDT            4.77             44         0      Not Applicable
  04/16/2026 08 PM PDT            4.77             44         0      Not Applicable
  04/16/2026 09 PM PDT            4.75             42         -      Not Applicable
  04/16/2026 10 PM PDT            4.75             42         0      Not Applicable
  04/16/2026 11 PM PDT            4.75             42         0      Not Applicable
  04/17/2026 12 AM PDT            4.75             42         0      Not Applicable
  04/17/2026 01 AM PDT            4.75             42         0      Not Applicable
  04/17/2026 02 AM PDT            4.74             41         -      Not Applicable
  04/17/2026 03 AM PDT            4.74             41         0      Not Applicable
  04/17/2026 04 AM PDT            4.74             41         0      Not Applicable
  04/17/2026 05 AM PDT            4.74             41         0      Not Applicable
  04/17/2026 06 AM PDT            4.73             40         -      Not Applicable
  04/17/2026 07 AM PDT            4.73             40         0      Not Applicable
  04/17/2026 08 AM PDT            4.73             40         0      Not Applicable
  04/17/2026 09 AM PDT            4.73             40         0      Not Applicable
  04/17/2026 10 AM PDT            4.73             40         0      Not Applicable
  04/17/2026 11 AM PDT            4.73             40         0      Not Applicable
  04/17/2026 12 PM PDT            4.73             40         0      Not Applicable
  04/17/2026 01 PM PDT            4.73             40         0      Not Applicable
  04/17/2026 02 PM PDT            4.71             38         -      Not Applicable
  04/17/2026 03 PM PDT            4.71             38         0      Not Applicable
  04/17/2026 04 PM PDT            4.71             38         0      Not Applicable
  04/17/2026 05 PM PDT            4.70             37         -      Not Applicable
  04/17/2026 06 PM PDT            4.70             37         0      Not Applicable
  04/17/2026 07 PM PDT            4.68             34         -      Not Applicable
  04/17/2026 08 PM PDT            4.70             37         +      Not Applicable
  04/17/2026 09 PM PDT            4.70             37         0      Not Applicable
  04/17/2026 10 PM PDT            4.68             34         -      Not Applicable
  04/17/2026 11 PM PDT            4.68             34         0      Not Applicable
  04/18/2026 12 AM PDT            4.68             34         0      Not Applicable
  04/18/2026 01 AM PDT            4.68             34         0      Not Applicable
  04/18/2026 02 AM PDT            4.68             34         0      Not Applicable
  04/18/2026 03 AM PDT            4.67             33         -      Not Applicable
  04/18/2026 04 AM PDT            4.67             33         0      Not Applicable
  04/18/2026 05 AM PDT            4.67             33         0      Not Applicable
  04/18/2026 06 AM PDT            4.67             33         0      Not Applicable
  04/18/2026 07 AM PDT            4.67             33         0      Not Applicable
  04/18/2026 08 AM PDT            4.67             33         0      Not Applicable
  04/18/2026 09 AM PDT            4.67             33         0      Not Applicable
  04/18/2026 10 AM PDT            4.67             33         0      Not Applicable
  04/18/2026 11 AM PDT            4.67             33         0      Not Applicable
  04/18/2026 12 PM PDT            4.67             33         0      Not Applicable
  04/18/2026 01 PM PDT            4.67             33         0      Not Applicable
  04/18/2026 02 PM PDT            4.67             33         0      Not Applicable
  04/18/2026 03 PM PDT            4.67             33         0      Not Applicable
  04/18/2026 04 PM PDT            4.67             33         0      Not Applicable
  04/18/2026 05 PM PDT            4.67             33         0      Not Applicable
  04/18/2026 06 PM PDT            4.65             30         -      Not Applicable
  04/18/2026 07 PM PDT            4.65             30         0      Not Applicable
  04/18/2026 08 PM PDT            4.65             30         0      Not Applicable
  04/18/2026 09 PM PDT            4.65             30         0      Not Applicable
  04/18/2026 10 PM PDT            4.64             29         -      Not Applicable
  04/18/2026 11 PM PDT            4.64             29         0      Not Applicable
  04/19/2026 12 AM PDT            4.64             29         0      Not Applicable
  04/19/2026 01 AM PDT            4.63             27         -      Not Applicable
  04/19/2026 02 AM PDT            4.64             29         +      Not Applicable
  04/19/2026 03 AM PDT            4.64             29         0      Not Applicable
  04/19/2026 04 AM PDT            4.63             27         -      Not Applicable
  04/19/2026 05 AM PDT            4.63             27         0      Not Applicable
  04/19/2026 06 AM PDT            4.63             27         0      Not Applicable
  04/19/2026 07 AM PDT            4.63             27         0      Not Applicable
  04/19/2026 08 AM PDT            4.63             27         0      Not Applicable
  04/19/2026 09 AM PDT            4.63             27         0      Not Applicable
  04/19/2026 10 AM PDT            4.63             27         0      Not Applicable
  04/19/2026 11 AM PDT            4.63             27         0      Not Applicable
  04/19/2026 12 PM PDT            4.63             27         0      Not Applicable
  04/19/2026 01 PM PDT            4.63             27         0      Not Applicable
  04/19/2026 02 PM PDT            4.63             27         0      Not Applicable
  04/19/2026 03 PM PDT            4.63             27         0      Not Applicable
  04/19/2026 04 PM PDT            4.63             27         0      Not Applicable
  04/19/2026 05 PM PDT            4.63             27         0      Not Applicable
  04/19/2026 06 PM PDT            4.63             27         0      Not Applicable
  04/19/2026 07 PM PDT            4.63             27         0      Not Applicable
  04/19/2026 08 PM PDT            4.61             25         -      Not Applicable
  04/19/2026 09 PM PDT            4.61             25         0      Not Applicable
  04/19/2026 10 PM PDT            4.61             25         0      Not Applicable
  04/19/2026 11 PM PDT            4.60             24         -      Not Applicable
  04/20/2026 12 AM PDT            4.61             25         +      Not Applicable
  04/20/2026 01 AM PDT            4.61             25         0      Not Applicable
  04/20/2026 02 AM PDT            4.60             24         -      Not Applicable
  04/20/2026 03 AM PDT            4.60             24         0      Not Applicable
  04/20/2026 04 AM PDT            4.60             24         0      Not Applicable
  04/20/2026 05 AM PDT            4.60             24         0      Not Applicable
  04/20/2026 06 AM PDT            4.61             25         +      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  04/20/2026 07 AM PDT            4.62             26                Not Applicable
  04/20/2026 08 AM PDT            4.65             30         +      Not Applicable
  04/20/2026 09 AM PDT            4.69             35         +      Not Applicable
  04/20/2026 10 AM PDT            4.73             40         +      Not Applicable
  04/20/2026 11 AM PDT            4.74             41         +      Not Applicable
  04/20/2026 12 PM PDT            4.74             41         0      Not Applicable
  04/20/2026 01 PM PDT            4.76             43         +      Not Applicable
  04/20/2026 02 PM PDT            4.75             42         -      Not Applicable
  04/20/2026 03 PM PDT            4.71             38         -      Not Applicable
  04/20/2026 04 PM PDT            4.69             35         -      Not Applicable
  04/20/2026 05 PM PDT            4.69             35         0      Not Applicable
  04/20/2026 06 PM PDT            4.68             34         -      Not Applicable
  04/20/2026 07 PM PDT            4.67             33         -      Not Applicable
  04/20/2026 08 PM PDT            4.65             30         -      Not Applicable
  04/20/2026 09 PM PDT            4.66             31         +      Not Applicable
  04/20/2026 10 PM PDT            4.66             31         0      Not Applicable
  04/20/2026 11 PM PDT            4.67             33         +      Not Applicable
  04/21/2026 12 AM PDT            4.76             43         +      Not Applicable
  04/21/2026 01 AM PDT            4.87             54         +      Not Applicable
  04/21/2026 02 AM PDT            4.87             54         0      Not Applicable
  04/21/2026 03 AM PDT            4.92             60         +      Not Applicable
  04/21/2026 04 AM PDT            5.07             80         +      Not Applicable
  04/21/2026 05 AM PDT            5.37            126         +      Not Applicable
  04/21/2026 06 AM PDT            5.43            137         +      Not Applicable
  04/21/2026 07 AM PDT            5.28            111         -      Not Applicable
  04/21/2026 08 AM PDT            5.22            101         -      Not Applicable
  04/21/2026 09 AM PDT            5.16             92         -      Not Applicable
  04/21/2026 10 AM PDT            5.10             84         -      Not Applicable
  04/21/2026 11 AM PDT            5.36            125         +      Not Applicable
  04/21/2026 12 PM PDT            5.88            242         +      Not Applicable
  04/21/2026 01 PM PDT            6.19            327         +      Not Applicable
  04/21/2026 02 PM PDT            6.36            375         +      Not Applicable
  04/21/2026 03 PM PDT            6.53            429         +      Not Applicable
  04/21/2026 04 PM PDT            6.60            452         +      Not Applicable
  04/21/2026 05 PM PDT            6.72            490         +      Not Applicable
  04/21/2026 06 PM PDT            6.93            564         +      Not Applicable
  04/21/2026 07 PM PDT            6.99            584         +      Not Applicable
  04/21/2026 08 PM PDT            6.88            547         -      Not Applicable
  04/21/2026 09 PM PDT            6.80            518         -      Not Applicable
  04/21/2026 10 PM PDT            6.72            490         -      Not Applicable
  04/21/2026 11 PM PDT            6.61            455         -      Not Applicable
  04/22/2026 12 AM PDT            6.53            429         -      Not Applicable
  04/22/2026 01 AM PDT            6.48            413         -      Not Applicable
  04/22/2026 02 AM PDT            6.44            401         -      Not Applicable
  04/22/2026 03 AM PDT            6.39            385         -      Not Applicable
  04/22/2026 04 AM PDT            6.32            363         -      Not Applicable
  04/22/2026 05 AM PDT            6.23            338         -      Not Applicable
  04/22/2026 06 AM PDT            6.15            316         -      Not Applicable
  04/22/2026 07 AM PDT            6.06            291         -      Not Applicable
  04/22/2026 08 AM PDT            5.96            263         -      Not Applicable
  04/22/2026 09 AM PDT            5.88            242         -      Not Applicable
  04/22/2026 10 AM PDT            5.81            224         -      Not Applicable
  04/22/2026 11 AM PDT            5.76            209         -      Not Applicable
  04/22/2026 12 PM PDT            5.71            195         -      Not Applicable
  04/22/2026 01 PM PDT            5.66            183         -      Not Applicable
  04/22/2026 02 PM PDT            5.61            173         -      Not Applicable
  04/22/2026 03 PM PDT            5.56            163         -      Not Applicable
  04/22/2026 04 PM PDT            5.52            155         -      Not Applicable
  04/22/2026 05 PM PDT            5.48            147         -      Not Applicable
  04/22/2026 06 PM PDT            5.44            139         -      Not Applicable
  04/22/2026 07 PM PDT            5.41            134         -      Not Applicable
  04/22/2026 08 PM PDT            5.38            128         -      Not Applicable
  04/22/2026 09 PM PDT            5.36            125         -      Not Applicable
  04/22/2026 10 PM PDT            5.33            119         -      Not Applicable
  04/22/2026 11 PM PDT            5.31            116         -      Not Applicable
  04/23/2026 12 AM PDT            5.29            112         -      Not Applicable
  04/23/2026 01 AM PDT            5.28            111         -      Not Applicable
  04/23/2026 02 AM PDT            5.26            107         -      Not Applicable
  04/23/2026 03 AM PDT            5.24            104         -      Not Applicable
  04/23/2026 04 AM PDT            5.23            103         -      Not Applicable
  04/23/2026 05 AM PDT            5.21            100         -      Not Applicable
  04/23/2026 06 AM PDT            5.20             98         -      Not Applicable
  04/23/2026 07 AM PDT            5.19             97         -      Not Applicable
  04/23/2026 08 AM PDT            5.18             95         -      Not Applicable
  04/23/2026 09 AM PDT            5.17             94         -      Not Applicable
  04/23/2026 10 AM PDT            5.16             92         -      Not Applicable
  04/23/2026 11 AM PDT            5.15             91         -      Not Applicable
  04/23/2026 12 PM PDT            5.14             89         -      Not Applicable
  04/23/2026 01 PM PDT            5.13             88         -      Not Applicable
  04/23/2026 02 PM PDT            5.12             87         -      Not Applicable
  04/23/2026 03 PM PDT            5.12             87         0      Not Applicable
  04/23/2026 04 PM PDT            5.11             85         -      Not Applicable
  04/23/2026 05 PM PDT            5.10             84         -      Not Applicable
  04/23/2026 06 PM PDT            5.09             82         -      Not Applicable
  04/23/2026 07 PM PDT            5.09             82         0      Not Applicable
  04/23/2026 08 PM PDT            5.08             81         -      Not Applicable
  04/23/2026 09 PM PDT            5.08             81         0      Not Applicable
  04/23/2026 10 PM PDT            5.07             80         -      Not Applicable
  04/23/2026 11 PM PDT            5.07             80         0      Not Applicable
  04/24/2026 12 AM PDT            5.06             78         -      Not Applicable
  04/24/2026 01 AM PDT            5.05             77         -      Not Applicable
  04/24/2026 02 AM PDT            5.05             77         0      Not Applicable
  04/24/2026 03 AM PDT            5.04             75         -      Not Applicable
  04/24/2026 04 AM PDT            5.04             75         0      Not Applicable
  04/24/2026 05 AM PDT            5.03             74         -      Not Applicable
  04/24/2026 06 AM PDT            5.03             74         0      Not Applicable
  04/24/2026 07 AM PDT            5.02             73         -      Not Applicable
  04/24/2026 08 AM PDT            5.02             73         0      Not Applicable
  04/24/2026 09 AM PDT            5.01             71         -      Not Applicable
  04/24/2026 10 AM PDT            5.01             71         0      Not Applicable
  04/24/2026 11 AM PDT            5.00             70         -      Not Applicable
  04/24/2026 12 PM PDT            5.00             70         0      Not Applicable
  04/24/2026 01 PM PDT            5.00             70         0      Not Applicable
  04/24/2026 02 PM PDT            4.99             69         -      Not Applicable
  04/24/2026 03 PM PDT            4.99             69         0      Not Applicable
  04/24/2026 04 PM PDT            4.98             67         -      Not Applicable
  04/24/2026 05 PM PDT            4.98             67         0      Not Applicable
  04/24/2026 06 PM PDT            4.97             66         -      Not Applicable
  04/24/2026 07 PM PDT            4.97             66         0      Not Applicable
  04/24/2026 08 PM PDT            4.96             65         -      Not Applicable
  04/24/2026 09 PM PDT            4.96             65         0      Not Applicable
  04/24/2026 10 PM PDT            4.96             65         0      Not Applicable
  04/24/2026 11 PM PDT            4.95             64         -      Not Applicable
  04/25/2026 12 AM PDT            4.95             64         0      Not Applicable
  04/25/2026 01 AM PDT            4.94             63         -      Not Applicable
  04/25/2026 02 AM PDT            4.94             63         0      Not Applicable
  04/25/2026 03 AM PDT            4.93             61         -      Not Applicable
  04/25/2026 04 AM PDT            4.93             61         0      Not Applicable
  04/25/2026 05 AM PDT            4.93             61         0      Not Applicable
#
# 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.