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

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BIG SULPHUR CREEK - CLOVERDALE (BSCC1)
Latitude: 38.83º NLongitude: 123.00º WElevation: 345 FeetForecast Type: Unofficial Location
Location: Sonoma County in CaliforniaBulletin Group: Russian NapaRiver Group: Russian Napa
Issuance Time: May 01 2026 at 7:46 AM PDTNext Issuance: May 02 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: Big Sulphur Creek - Cloverdale (BSCC1)
#
# File Generation Time:  05/01/2026 at 07:47 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  04/26/2026 at 01:00 PM PDT
# Maximum Observed Stage:                       16.20 Feet
# Maximum Observed Flow:                        107 cfs
#
# Earliest Date & Time of Maximum Forecast:     05/01/2026 at 08:00 AM PDT
# Maximum Forecast Stage:                       15.95 Feet
# Maximum Forecast Flow:                        73 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  04/26/2026 07 AM PDT           16.20            107                Not Applicable
  04/26/2026 08 AM PDT           16.20            107         0      Not Applicable
  04/26/2026 09 AM PDT           16.20            107         0      Not Applicable
  04/26/2026 10 AM PDT           16.20            107         0      Not Applicable
  04/26/2026 11 AM PDT           16.20            107         0      Not Applicable
  04/26/2026 12 PM PDT           16.20            107         0      Not Applicable
  04/26/2026 01 PM PDT           16.20            107         0      Not Applicable
  04/26/2026 02 PM PDT           16.19            105         -      Not Applicable
  04/26/2026 03 PM PDT           16.19            105         0      Not Applicable
  04/26/2026 04 PM PDT           16.19            105         0      Not Applicable
  04/26/2026 05 PM PDT           16.18            104         -      Not Applicable
  04/26/2026 06 PM PDT           16.18            104         0      Not Applicable
  04/26/2026 07 PM PDT           16.17            102         -      Not Applicable
  04/26/2026 08 PM PDT           16.17            102         0      Not Applicable
  04/26/2026 09 PM PDT           16.16            101         -      Not Applicable
  04/26/2026 10 PM PDT           16.16            101         0      Not Applicable
  04/26/2026 11 PM PDT           16.16            101         0      Not Applicable
  04/27/2026 12 AM PDT           16.15             99         -      Not Applicable
  04/27/2026 01 AM PDT           16.15             99         0      Not Applicable
  04/27/2026 02 AM PDT           16.15             99         0      Not Applicable
  04/27/2026 03 AM PDT           16.15             99         0      Not Applicable
  04/27/2026 04 AM PDT           16.13             96         -      Not Applicable
  04/27/2026 05 AM PDT           16.14             98         +      Not Applicable
  04/27/2026 06 AM PDT           16.14             98         0      Not Applicable
  04/27/2026 07 AM PDT           16.14             98         0      Not Applicable
  04/27/2026 08 AM PDT           16.14             98         0      Not Applicable
  04/27/2026 09 AM PDT           16.13             96         -      Not Applicable
  04/27/2026 10 AM PDT           16.13             96         0      Not Applicable
  04/27/2026 11 AM PDT           16.13             96         0      Not Applicable
  04/27/2026 12 PM PDT           16.13             96         0      Not Applicable
  04/27/2026 01 PM PDT           16.13             96         0      Not Applicable
  04/27/2026 02 PM PDT           16.13             96         0      Not Applicable
  04/27/2026 03 PM PDT           16.12             95         -      Not Applicable
  04/27/2026 04 PM PDT           16.12             95         0      Not Applicable
  04/27/2026 05 PM PDT           16.11             94         -      Not Applicable
  04/27/2026 06 PM PDT           16.11             94         0      Not Applicable
  04/27/2026 07 PM PDT           16.11             94         0      Not Applicable
  04/27/2026 08 PM PDT           16.10             92         -      Not Applicable
  04/27/2026 09 PM PDT           16.10             92         0      Not Applicable
  04/27/2026 10 PM PDT           16.10             92         0      Not Applicable
  04/27/2026 11 PM PDT           16.09             91         -      Not Applicable
  04/28/2026 12 AM PDT           16.09             91         0      Not Applicable
  04/28/2026 01 AM PDT           16.10             92         +      Not Applicable
  04/28/2026 02 AM PDT           16.11             94         +      Not Applicable
  04/28/2026 03 AM PDT           16.11             94         0      Not Applicable
  04/28/2026 04 AM PDT           16.10             92         -      Not Applicable
  04/28/2026 05 AM PDT           16.09             91         -      Not Applicable
  04/28/2026 06 AM PDT           16.09             91         0      Not Applicable
  04/28/2026 07 AM PDT           16.08             89         -      Not Applicable
  04/28/2026 08 AM PDT           16.09             91         +      Not Applicable
  04/28/2026 09 AM PDT           16.08             89         -      Not Applicable
  04/28/2026 10 AM PDT           16.08             89         0      Not Applicable
  04/28/2026 11 AM PDT           16.08             89         0      Not Applicable
  04/28/2026 12 PM PDT           16.09             91         +      Not Applicable
  04/28/2026 01 PM PDT           16.08             89         -      Not Applicable
  04/28/2026 02 PM PDT           16.08             89         0      Not Applicable
  04/28/2026 03 PM PDT           16.07             88         -      Not Applicable
  04/28/2026 04 PM PDT           16.07             88         0      Not Applicable
  04/28/2026 05 PM PDT           16.06             87         -      Not Applicable
  04/28/2026 06 PM PDT           16.06             87         0      Not Applicable
  04/28/2026 07 PM PDT           16.05             85         -      Not Applicable
  04/28/2026 08 PM PDT           16.05             85         0      Not Applicable
  04/28/2026 09 PM PDT           16.04             84         -      Not Applicable
  04/28/2026 10 PM PDT           16.04             84         0      Not Applicable
  04/28/2026 11 PM PDT           16.03             83         -      Not Applicable
  04/29/2026 12 AM PDT           16.03             83         0      Not Applicable
  04/29/2026 01 AM PDT           16.03             83         0      Not Applicable
  04/29/2026 02 AM PDT           16.03             83         0      Not Applicable
  04/29/2026 03 AM PDT           16.02             81         -      Not Applicable
  04/29/2026 04 AM PDT           16.02             81         0      Not Applicable
  04/29/2026 05 AM PDT           16.02             81         0      Not Applicable
  04/29/2026 06 AM PDT           16.02             81         0      Not Applicable
  04/29/2026 07 AM PDT           16.01             80         -      Not Applicable
  04/29/2026 08 AM PDT           16.01             80         0      Not Applicable
  04/29/2026 09 AM PDT           16.02             81         +      Not Applicable
  04/29/2026 10 AM PDT           16.02             81         0      Not Applicable
  04/29/2026 11 AM PDT           16.02             81         0      Not Applicable
  04/29/2026 12 PM PDT           16.02             81         0      Not Applicable
  04/29/2026 01 PM PDT           16.02             81         0      Not Applicable
  04/29/2026 02 PM PDT           16.02             81         0      Not Applicable
  04/29/2026 03 PM PDT           16.01             80         -      Not Applicable
  04/29/2026 04 PM PDT           16.01             80         0      Not Applicable
  04/29/2026 05 PM PDT           16.01             80         0      Not Applicable
  04/29/2026 06 PM PDT           16.00             79         -      Not Applicable
  04/29/2026 07 PM PDT           16.00             79         0      Not Applicable
  04/29/2026 08 PM PDT           15.99             77         -      Not Applicable
  04/29/2026 09 PM PDT           15.99             77         0      Not Applicable
  04/29/2026 10 PM PDT           15.98             76         -      Not Applicable
  04/29/2026 11 PM PDT           15.98             76         0      Not Applicable
  04/30/2026 12 AM PDT           15.97             75         -      Not Applicable
  04/30/2026 01 AM PDT           15.97             75         0      Not Applicable
  04/30/2026 02 AM PDT           15.97             75         0      Not Applicable
  04/30/2026 03 AM PDT           15.97             75         0      Not Applicable
  04/30/2026 04 AM PDT           15.98             76         +      Not Applicable
  04/30/2026 05 AM PDT           15.97             75         -      Not Applicable
  04/30/2026 06 AM PDT           15.99             77         +      Not Applicable
  04/30/2026 07 AM PDT           15.98             76         -      Not Applicable
  04/30/2026 08 AM PDT           15.99             77         +      Not Applicable
  04/30/2026 09 AM PDT           15.99             77         0      Not Applicable
  04/30/2026 10 AM PDT           15.99             77         0      Not Applicable
  04/30/2026 11 AM PDT           15.99             77         0      Not Applicable
  04/30/2026 12 PM PDT           15.99             77         0      Not Applicable
  04/30/2026 01 PM PDT           15.99             77         0      Not Applicable
  04/30/2026 02 PM PDT           15.98             76         -      Not Applicable
  04/30/2026 03 PM PDT           15.99             77         +      Not Applicable
  04/30/2026 04 PM PDT           15.98             76         -      Not Applicable
  04/30/2026 05 PM PDT           15.98             76         0      Not Applicable
  04/30/2026 06 PM PDT           15.97             75         -      Not Applicable
  04/30/2026 07 PM PDT           15.97             75         0      Not Applicable
  04/30/2026 08 PM PDT           15.97             75         0      Not Applicable
  04/30/2026 09 PM PDT           15.96             74         -      Not Applicable
  04/30/2026 10 PM PDT           15.96             74         0      Not Applicable
  04/30/2026 11 PM PDT           15.96             74         0      Not Applicable
  05/01/2026 12 AM PDT           15.95             73         -      Not Applicable
  05/01/2026 01 AM PDT           15.95             73         0      Not Applicable
  05/01/2026 02 AM PDT           15.95             73         0      Not Applicable
  05/01/2026 03 AM PDT           15.95             73         0      Not Applicable
  05/01/2026 04 AM PDT           15.94             71         -      Not Applicable
  05/01/2026 05 AM PDT           15.95             73         +      Not Applicable
  05/01/2026 06 AM PDT           15.95             73         0      Not Applicable
  05/01/2026 07 AM PDT           15.95             73         0      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  05/01/2026 08 AM PDT           15.95             73                Not Applicable
  05/01/2026 09 AM PDT           15.95             73         0      Not Applicable
  05/01/2026 10 AM PDT           15.95             73         0      Not Applicable
  05/01/2026 11 AM PDT           15.94             71         -      Not Applicable
  05/01/2026 12 PM PDT           15.94             71         0      Not Applicable
  05/01/2026 01 PM PDT           15.94             71         0      Not Applicable
  05/01/2026 02 PM PDT           15.94             71         0      Not Applicable
  05/01/2026 03 PM PDT           15.94             71         0      Not Applicable
  05/01/2026 04 PM PDT           15.94             71         0      Not Applicable
  05/01/2026 05 PM PDT           15.94             71         0      Not Applicable
  05/01/2026 06 PM PDT           15.94             71         0      Not Applicable
  05/01/2026 07 PM PDT           15.94             71         0      Not Applicable
  05/01/2026 08 PM PDT           15.94             71         0      Not Applicable
  05/01/2026 09 PM PDT           15.93             70         -      Not Applicable
  05/01/2026 10 PM PDT           15.93             70         0      Not Applicable
  05/01/2026 11 PM PDT           15.93             70         0      Not Applicable
  05/02/2026 12 AM PDT           15.93             70         0      Not Applicable
  05/02/2026 01 AM PDT           15.93             70         0      Not Applicable
  05/02/2026 02 AM PDT           15.93             70         0      Not Applicable
  05/02/2026 03 AM PDT           15.93             70         0      Not Applicable
  05/02/2026 04 AM PDT           15.93             70         0      Not Applicable
  05/02/2026 05 AM PDT           15.93             70         0      Not Applicable
  05/02/2026 06 AM PDT           15.93             70         0      Not Applicable
  05/02/2026 07 AM PDT           15.92             69         -      Not Applicable
  05/02/2026 08 AM PDT           15.92             69         0      Not Applicable
  05/02/2026 09 AM PDT           15.92             69         0      Not Applicable
  05/02/2026 10 AM PDT           15.92             69         0      Not Applicable
  05/02/2026 11 AM PDT           15.92             69         0      Not Applicable
  05/02/2026 12 PM PDT           15.92             69         0      Not Applicable
  05/02/2026 01 PM PDT           15.92             69         0      Not Applicable
  05/02/2026 02 PM PDT           15.92             69         0      Not Applicable
  05/02/2026 03 PM PDT           15.92             69         0      Not Applicable
  05/02/2026 04 PM PDT           15.92             69         0      Not Applicable
  05/02/2026 05 PM PDT           15.91             68         -      Not Applicable
  05/02/2026 06 PM PDT           15.91             68         0      Not Applicable
  05/02/2026 07 PM PDT           15.91             68         0      Not Applicable
  05/02/2026 08 PM PDT           15.91             68         0      Not Applicable
  05/02/2026 09 PM PDT           15.91             68         0      Not Applicable
  05/02/2026 10 PM PDT           15.91             68         0      Not Applicable
  05/02/2026 11 PM PDT           15.91             68         0      Not Applicable
  05/03/2026 12 AM PDT           15.91             68         0      Not Applicable
  05/03/2026 01 AM PDT           15.91             68         0      Not Applicable
  05/03/2026 02 AM PDT           15.91             68         0      Not Applicable
  05/03/2026 03 AM PDT           15.91             68         0      Not Applicable
  05/03/2026 04 AM PDT           15.90             67         -      Not Applicable
  05/03/2026 05 AM PDT           15.90             67         0      Not Applicable
  05/03/2026 06 AM PDT           15.90             67         0      Not Applicable
  05/03/2026 07 AM PDT           15.90             67         0      Not Applicable
  05/03/2026 08 AM PDT           15.90             67         0      Not Applicable
  05/03/2026 09 AM PDT           15.90             67         0      Not Applicable
  05/03/2026 10 AM PDT           15.90             67         0      Not Applicable
  05/03/2026 11 AM PDT           15.90             67         0      Not Applicable
  05/03/2026 12 PM PDT           15.90             67         0      Not Applicable
  05/03/2026 01 PM PDT           15.90             67         0      Not Applicable
  05/03/2026 02 PM PDT           15.90             67         0      Not Applicable
  05/03/2026 03 PM PDT           15.89             65         -      Not Applicable
  05/03/2026 04 PM PDT           15.89             65         0      Not Applicable
  05/03/2026 05 PM PDT           15.89             65         0      Not Applicable
  05/03/2026 06 PM PDT           15.89             65         0      Not Applicable
  05/03/2026 07 PM PDT           15.89             65         0      Not Applicable
  05/03/2026 08 PM PDT           15.89             65         0      Not Applicable
  05/03/2026 09 PM PDT           15.89             65         0      Not Applicable
  05/03/2026 10 PM PDT           15.89             65         0      Not Applicable
  05/03/2026 11 PM PDT           15.89             65         0      Not Applicable
  05/04/2026 12 AM PDT           15.89             65         0      Not Applicable
  05/04/2026 01 AM PDT           15.89             65         0      Not Applicable
  05/04/2026 02 AM PDT           15.88             64         -      Not Applicable
  05/04/2026 03 AM PDT           15.88             64         0      Not Applicable
  05/04/2026 04 AM PDT           15.88             64         0      Not Applicable
  05/04/2026 05 AM PDT           15.88             64         0      Not Applicable
  05/04/2026 06 AM PDT           15.88             64         0      Not Applicable
  05/04/2026 07 AM PDT           15.88             64         0      Not Applicable
  05/04/2026 08 AM PDT           15.88             64         0      Not Applicable
  05/04/2026 09 AM PDT           15.88             64         0      Not Applicable
  05/04/2026 10 AM PDT           15.88             64         0      Not Applicable
  05/04/2026 11 AM PDT           15.88             64         0      Not Applicable
  05/04/2026 12 PM PDT           15.88             64         0      Not Applicable
  05/04/2026 01 PM PDT           15.88             64         0      Not Applicable
  05/04/2026 02 PM PDT           15.88             64         0      Not Applicable
  05/04/2026 03 PM PDT           15.87             63         -      Not Applicable
  05/04/2026 04 PM PDT           15.87             63         0      Not Applicable
  05/04/2026 05 PM PDT           15.87             63         0      Not Applicable
  05/04/2026 06 PM PDT           15.87             63         0      Not Applicable
  05/04/2026 07 PM PDT           15.87             63         0      Not Applicable
  05/04/2026 08 PM PDT           15.87             63         0      Not Applicable
  05/04/2026 09 PM PDT           15.87             63         0      Not Applicable
  05/04/2026 10 PM PDT           15.87             63         0      Not Applicable
  05/04/2026 11 PM PDT           15.87             63         0      Not Applicable
  05/05/2026 12 AM PDT           15.87             63         0      Not Applicable
  05/05/2026 01 AM PDT           15.87             63         0      Not Applicable
  05/05/2026 02 AM PDT           15.87             63         0      Not Applicable
  05/05/2026 03 AM PDT           15.86             62         -      Not Applicable
  05/05/2026 04 AM PDT           15.86             62         0      Not Applicable
  05/05/2026 05 AM PDT           15.86             62         0      Not Applicable
  05/05/2026 06 AM PDT           15.86             62         0      Not Applicable
  05/05/2026 07 AM PDT           15.86             62         0      Not Applicable
  05/05/2026 08 AM PDT           15.86             62         0      Not Applicable
  05/05/2026 09 AM PDT           15.86             62         0      Not Applicable
  05/05/2026 10 AM PDT           15.86             62         0      Not Applicable
  05/05/2026 11 AM PDT           15.86             62         0      Not Applicable
  05/05/2026 12 PM PDT           15.86             62         0      Not Applicable
  05/05/2026 01 PM PDT           15.86             62         0      Not Applicable
  05/05/2026 02 PM PDT           15.86             62         0      Not Applicable
  05/05/2026 03 PM PDT           15.85             61         -      Not Applicable
  05/05/2026 04 PM PDT           15.85             61         0      Not Applicable
  05/05/2026 05 PM PDT           15.85             61         0      Not Applicable
  05/05/2026 06 PM PDT           15.85             61         0      Not Applicable
  05/05/2026 07 PM PDT           15.85             61         0      Not Applicable
  05/05/2026 08 PM PDT           15.85             61         0      Not Applicable
  05/05/2026 09 PM PDT           15.85             61         0      Not Applicable
  05/05/2026 10 PM PDT           15.85             61         0      Not Applicable
  05/05/2026 11 PM PDT           15.85             61         0      Not Applicable
  05/06/2026 12 AM PDT           15.85             61         0      Not Applicable
  05/06/2026 01 AM PDT           15.85             61         0      Not Applicable
  05/06/2026 02 AM PDT           15.85             61         0      Not Applicable
  05/06/2026 03 AM PDT           15.84             60         -      Not Applicable
  05/06/2026 04 AM PDT           15.84             60         0      Not Applicable
  05/06/2026 05 AM PDT           15.84             60         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.