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

 | 

MIDDLE FORK COSUMNES RIVER - SOMERSET (SOSC1)
Latitude: 38.62º NLongitude: 120.70º WElevation: 1821 Feet
Location: El Dorado County in CaliforniaBulletin Group: San JoaquinRiver Group: North San Joaquin
Issuance Time: Nov 12 2025 at 1:59 PM PSTNext Issuance: Nov 13 2025 at 9:00 AM PST
Action/Monitor: N/A Minor Flood: N/A Moderate Flood: N/A Major Flood: N/A


# Tabular Observed and Forecast Hydrograph Information
#
# Location: Middle Fork Cosumnes River - Somerset (SOSC1)
#
# File Generation Time:  11/12/2025 at 02:01 PM PST
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  11/07/2025 at 02:00 PM PST
# Maximum Observed Stage:                       4.23 Feet
# Maximum Observed Flow:                        23 cfs
#
# Earliest Date & Time of Maximum Forecast:     11/14/2025 at 03:00 PM PST
# Maximum Forecast Stage:                       5.34 Feet
# Maximum Forecast Flow:                        169 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  11/07/2025 02 PM PST            4.23             23                Not Applicable
  11/07/2025 03 PM PST            4.22             22         -      Not Applicable
  11/07/2025 04 PM PST            4.22             22         0      Not Applicable
  11/07/2025 05 PM PST            4.22             22         0      Not Applicable
  11/07/2025 06 PM PST            4.22             22         0      Not Applicable
  11/07/2025 07 PM PST            4.21             22         -      Not Applicable
  11/07/2025 08 PM PST            4.21             22         0      Not Applicable
  11/07/2025 09 PM PST            4.21             22         0      Not Applicable
  11/07/2025 10 PM PST            4.21             22         0      Not Applicable
  11/07/2025 11 PM PST            4.21             22         0      Not Applicable
  11/08/2025 12 AM PST            4.21             22         0      Not Applicable
  11/08/2025 01 AM PST            4.20             21         -      Not Applicable
  11/08/2025 02 AM PST            4.20             21         0      Not Applicable
  11/08/2025 03 AM PST            4.20             21         0      Not Applicable
  11/08/2025 04 AM PST            4.20             21         0      Not Applicable
  11/08/2025 05 AM PST            4.20             21         0      Not Applicable
  11/08/2025 06 AM PST            4.20             21         0      Not Applicable
  11/08/2025 07 AM PST            4.19             20         -      Not Applicable
  11/08/2025 08 AM PST            4.19             20         0      Not Applicable
  11/08/2025 09 AM PST            4.19             20         0      Not Applicable
  11/08/2025 10 AM PST            4.20             21         +      Not Applicable
  11/08/2025 11 AM PST            4.20             21         0      Not Applicable
  11/08/2025 12 PM PST            4.20             21         0      Not Applicable
  11/08/2025 01 PM PST            4.19             20         -      Not Applicable
  11/08/2025 02 PM PST            4.19             20         0      Not Applicable
  11/08/2025 03 PM PST            4.19             20         0      Not Applicable
  11/08/2025 04 PM PST            4.19             20         0      Not Applicable
  11/08/2025 05 PM PST            4.18             20         -      Not Applicable
  11/08/2025 06 PM PST            4.18             20         0      Not Applicable
  11/08/2025 07 PM PST            4.18             20         0      Not Applicable
  11/08/2025 08 PM PST            4.18             20         0      Not Applicable
  11/08/2025 09 PM PST            4.18             20         0      Not Applicable
  11/08/2025 10 PM PST            4.18             20         0      Not Applicable
  11/08/2025 11 PM PST            4.18             20         0      Not Applicable
  11/09/2025 12 AM PST            4.18             20         0      Not Applicable
  11/09/2025 01 AM PST            4.18             20         0      Not Applicable
  11/09/2025 02 AM PST            4.18             20         0      Not Applicable
  11/09/2025 03 AM PST            4.18             20         0      Not Applicable
  11/09/2025 04 AM PST            4.18             20         0      Not Applicable
  11/09/2025 05 AM PST            4.18             20         0      Not Applicable
  11/09/2025 06 AM PST            4.18             20         0      Not Applicable
  11/09/2025 07 AM PST            4.18             20         0      Not Applicable
  11/09/2025 08 AM PST            4.18             20         0      Not Applicable
  11/09/2025 09 AM PST            4.18             20         0      Not Applicable
  11/09/2025 10 AM PST            4.18             20         0      Not Applicable
  11/09/2025 11 AM PST            4.18             20         0      Not Applicable
  11/09/2025 12 PM PST            4.17             19         -      Not Applicable
  11/09/2025 01 PM PST            4.17             19         0      Not Applicable
  11/09/2025 02 PM PST            4.17             19         0      Not Applicable
  11/09/2025 03 PM PST            4.17             19         0      Not Applicable
  11/09/2025 04 PM PST            4.17             19         0      Not Applicable
  11/09/2025 05 PM PST            4.17             19         0      Not Applicable
  11/09/2025 06 PM PST            4.17             19         0      Not Applicable
  11/09/2025 07 PM PST            4.17             19         0      Not Applicable
  11/09/2025 08 PM PST            4.17             19         0      Not Applicable
  11/09/2025 09 PM PST            4.17             19         0      Not Applicable
  11/09/2025 10 PM PST            4.16             18         -      Not Applicable
  11/09/2025 11 PM PST            4.17             19         +      Not Applicable
  11/10/2025 12 AM PST            4.17             19         0      Not Applicable
  11/10/2025 01 AM PST            4.17             19         0      Not Applicable
  11/10/2025 02 AM PST            4.17             19         0      Not Applicable
  11/10/2025 03 AM PST            4.17             19         0      Not Applicable
  11/10/2025 04 AM PST            4.17             19         0      Not Applicable
  11/10/2025 05 AM PST            4.16             18         -      Not Applicable
  11/10/2025 06 AM PST            4.16             18         0      Not Applicable
  11/10/2025 07 AM PST            4.16             18         0      Not Applicable
  11/10/2025 08 AM PST            4.16             18         0      Not Applicable
  11/10/2025 09 AM PST            4.17             19         +      Not Applicable
  11/10/2025 10 AM PST            4.17             19         0      Not Applicable
  11/10/2025 11 AM PST            4.16             18         -      Not Applicable
  11/10/2025 12 PM PST            4.16             18         0      Not Applicable
  11/10/2025 01 PM PST            4.16             18         0      Not Applicable
  11/10/2025 02 PM PST            4.16             18         0      Not Applicable
  11/10/2025 03 PM PST            4.16             18         0      Not Applicable
  11/10/2025 04 PM PST            4.16             18         0      Not Applicable
  11/10/2025 05 PM PST            4.15             18         -      Not Applicable
  11/10/2025 06 PM PST            4.15             18         0      Not Applicable
  11/10/2025 07 PM PST            4.15             18         0      Not Applicable
  11/10/2025 08 PM PST            4.15             18         0      Not Applicable
  11/10/2025 09 PM PST            4.15             18         0      Not Applicable
  11/10/2025 10 PM PST            4.15             18         0      Not Applicable
  11/10/2025 11 PM PST            4.16             18         +      Not Applicable
  11/11/2025 12 AM PST            4.16             18         0      Not Applicable
  11/11/2025 01 AM PST            4.16             18         0      Not Applicable
  11/11/2025 02 AM PST            4.16             18         0      Not Applicable
  11/11/2025 03 AM PST            4.16             18         0      Not Applicable
  11/11/2025 04 AM PST            4.16             18         0      Not Applicable
  11/11/2025 05 AM PST            4.16             18         0      Not Applicable
  11/11/2025 06 AM PST            4.15             18         -      Not Applicable
  11/11/2025 07 AM PST            4.15             18         0      Not Applicable
  11/11/2025 08 AM PST            4.16             18         +      Not Applicable
  11/11/2025 09 AM PST            4.16             18         0      Not Applicable
  11/11/2025 10 AM PST            4.16             18         0      Not Applicable
  11/11/2025 11 AM PST            4.16             18         0      Not Applicable
  11/11/2025 12 PM PST            4.16             18         0      Not Applicable
  11/11/2025 01 PM PST            4.15             18         -      Not Applicable
  11/11/2025 02 PM PST            4.15             18         0      Not Applicable
  11/11/2025 03 PM PST            4.15             18         0      Not Applicable
  11/11/2025 04 PM PST            4.15             18         0      Not Applicable
  11/11/2025 05 PM PST            4.15             18         0      Not Applicable
  11/11/2025 06 PM PST            4.15             18         0      Not Applicable
  11/11/2025 07 PM PST            4.15             18         0      Not Applicable
  11/11/2025 08 PM PST            4.15             18         0      Not Applicable
  11/11/2025 09 PM PST            4.15             18         0      Not Applicable
  11/11/2025 10 PM PST            4.15             18         0      Not Applicable
  11/11/2025 11 PM PST            4.15             18         0      Not Applicable
  11/12/2025 12 AM PST            4.15             18         0      Not Applicable
  11/12/2025 01 AM PST            4.15             18         0      Not Applicable
  11/12/2025 02 AM PST            4.15             18         0      Not Applicable
  11/12/2025 03 AM PST            4.15             18         0      Not Applicable
  11/12/2025 04 AM PST            4.15             18         0      Not Applicable
  11/12/2025 05 AM PST            4.15             18         0      Not Applicable
  11/12/2025 06 AM PST            4.15             18         0      Not Applicable
  11/12/2025 07 AM PST            4.15             18         0      Not Applicable
  11/12/2025 08 AM PST            4.15             18         0      Not Applicable
  11/12/2025 09 AM PST            4.15             18         0      Not Applicable
  11/12/2025 10 AM PST            4.15             18         0      Not Applicable
  11/12/2025 11 AM PST            4.15             18         0      Not Applicable
  11/12/2025 12 PM PST            4.15             18         0      Not Applicable
  11/12/2025 01 PM PST            4.15             18         0      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  11/12/2025 02 PM PST            4.15             18                Not Applicable
  11/12/2025 03 PM PST            4.15             18         0      Not Applicable
  11/12/2025 04 PM PST            4.15             18         0      Not Applicable
  11/12/2025 05 PM PST            4.15             18         0      Not Applicable
  11/12/2025 06 PM PST            4.15             18         0      Not Applicable
  11/12/2025 07 PM PST            4.15             18         0      Not Applicable
  11/12/2025 08 PM PST            4.15             18         0      Not Applicable
  11/12/2025 09 PM PST            4.15             18         0      Not Applicable
  11/12/2025 10 PM PST            4.15             18         0      Not Applicable
  11/12/2025 11 PM PST            4.15             18         0      Not Applicable
  11/13/2025 12 AM PST            4.15             18         0      Not Applicable
  11/13/2025 01 AM PST            4.15             18         0      Not Applicable
  11/13/2025 02 AM PST            4.15             18         0      Not Applicable
  11/13/2025 03 AM PST            4.15             18         0      Not Applicable
  11/13/2025 04 AM PST            4.15             18         0      Not Applicable
  11/13/2025 05 AM PST            4.15             18         0      Not Applicable
  11/13/2025 06 AM PST            4.15             18         0      Not Applicable
  11/13/2025 07 AM PST            4.15             18         0      Not Applicable
  11/13/2025 08 AM PST            4.15             18         0      Not Applicable
  11/13/2025 09 AM PST            4.15             18         0      Not Applicable
  11/13/2025 10 AM PST            4.15             18         0      Not Applicable
  11/13/2025 11 AM PST            4.16             18         +      Not Applicable
  11/13/2025 12 PM PST            4.16             18         0      Not Applicable
  11/13/2025 01 PM PST            4.17             19         +      Not Applicable
  11/13/2025 02 PM PST            4.19             20         +      Not Applicable
  11/13/2025 03 PM PST            4.20             21         +      Not Applicable
  11/13/2025 04 PM PST            4.23             23         +      Not Applicable
  11/13/2025 05 PM PST            4.26             25         +      Not Applicable
  11/13/2025 06 PM PST            4.32             30         +      Not Applicable
  11/13/2025 07 PM PST            4.38             35         +      Not Applicable
  11/13/2025 08 PM PST            4.43             40         +      Not Applicable
  11/13/2025 09 PM PST            4.49             46         +      Not Applicable
  11/13/2025 10 PM PST            4.54             52         +      Not Applicable
  11/13/2025 11 PM PST            4.58             58         +      Not Applicable
  11/14/2025 12 AM PST            4.63             65         +      Not Applicable
  11/14/2025 01 AM PST            4.68             73         +      Not Applicable
  11/14/2025 02 AM PST            4.73             81         +      Not Applicable
  11/14/2025 03 AM PST            4.78             89         +      Not Applicable
  11/14/2025 04 AM PST            4.83             95         +      Not Applicable
  11/14/2025 05 AM PST            4.91            105         +      Not Applicable
  11/14/2025 06 AM PST            4.99            116         +      Not Applicable
  11/14/2025 07 AM PST            5.05            124         +      Not Applicable
  11/14/2025 08 AM PST            5.12            134         +      Not Applicable
  11/14/2025 09 AM PST            5.17            141         +      Not Applicable
  11/14/2025 10 AM PST            5.21            148         +      Not Applicable
  11/14/2025 11 AM PST            5.25            154         +      Not Applicable
  11/14/2025 12 PM PST            5.29            160         +      Not Applicable
  11/14/2025 01 PM PST            5.31            164         +      Not Applicable
  11/14/2025 02 PM PST            5.33            167         +      Not Applicable
  11/14/2025 03 PM PST            5.34            169         +      Not Applicable
  11/14/2025 04 PM PST            5.34            169         0      Not Applicable
  11/14/2025 05 PM PST            5.33            167         -      Not Applicable
  11/14/2025 06 PM PST            5.31            164         -      Not Applicable
  11/14/2025 07 PM PST            5.28            159         -      Not Applicable
  11/14/2025 08 PM PST            5.25            154         -      Not Applicable
  11/14/2025 09 PM PST            5.22            149         -      Not Applicable
  11/14/2025 10 PM PST            5.18            143         -      Not Applicable
  11/14/2025 11 PM PST            5.14            137         -      Not Applicable
  11/15/2025 12 AM PST            5.08            128         -      Not Applicable
  11/15/2025 01 AM PST            5.03            121         -      Not Applicable
  11/15/2025 02 AM PST            4.97            113         -      Not Applicable
  11/15/2025 03 AM PST            4.92            106         -      Not Applicable
  11/15/2025 04 AM PST            4.87            100         -      Not Applicable
  11/15/2025 05 AM PST            4.81             93         -      Not Applicable
  11/15/2025 06 AM PST            4.77             87         -      Not Applicable
  11/15/2025 07 AM PST            4.73             81         -      Not Applicable
  11/15/2025 08 AM PST            4.69             74         -      Not Applicable
  11/15/2025 09 AM PST            4.66             70         -      Not Applicable
  11/15/2025 10 AM PST            4.62             64         -      Not Applicable
  11/15/2025 11 AM PST            4.59             59         -      Not Applicable
  11/15/2025 12 PM PST            4.57             56         -      Not Applicable
  11/15/2025 01 PM PST            4.55             54         -      Not Applicable
  11/15/2025 02 PM PST            4.53             51         -      Not Applicable
  11/15/2025 03 PM PST            4.51             48         -      Not Applicable
  11/15/2025 04 PM PST            4.49             46         -      Not Applicable
  11/15/2025 05 PM PST            4.47             44         -      Not Applicable
  11/15/2025 06 PM PST            4.46             43         -      Not Applicable
  11/15/2025 07 PM PST            4.45             42         -      Not Applicable
  11/15/2025 08 PM PST            4.44             41         -      Not Applicable
  11/15/2025 09 PM PST            4.43             40         -      Not Applicable
  11/15/2025 10 PM PST            4.42             39         -      Not Applicable
  11/15/2025 11 PM PST            4.42             39         0      Not Applicable
  11/16/2025 12 AM PST            4.42             39         0      Not Applicable
  11/16/2025 01 AM PST            4.42             39         0      Not Applicable
  11/16/2025 02 AM PST            4.42             39         0      Not Applicable
  11/16/2025 03 AM PST            4.43             40         +      Not Applicable
  11/16/2025 04 AM PST            4.43             40         0      Not Applicable
  11/16/2025 05 AM PST            4.45             42         +      Not Applicable
  11/16/2025 06 AM PST            4.46             43         +      Not Applicable
  11/16/2025 07 AM PST            4.48             45         +      Not Applicable
  11/16/2025 08 AM PST            4.50             47         +      Not Applicable
  11/16/2025 09 AM PST            4.51             48         +      Not Applicable
  11/16/2025 10 AM PST            4.52             50         +      Not Applicable
  11/16/2025 11 AM PST            4.53             51         +      Not Applicable
  11/16/2025 12 PM PST            4.54             52         +      Not Applicable
  11/16/2025 01 PM PST            4.55             54         +      Not Applicable
  11/16/2025 02 PM PST            4.56             55         +      Not Applicable
  11/16/2025 03 PM PST            4.56             55         0      Not Applicable
  11/16/2025 04 PM PST            4.57             56         +      Not Applicable
  11/16/2025 05 PM PST            4.57             56         0      Not Applicable
  11/16/2025 06 PM PST            4.57             56         0      Not Applicable
  11/16/2025 07 PM PST            4.57             56         0      Not Applicable
  11/16/2025 08 PM PST            4.57             56         0      Not Applicable
  11/16/2025 09 PM PST            4.57             56         0      Not Applicable
  11/16/2025 10 PM PST            4.57             56         0      Not Applicable
  11/16/2025 11 PM PST            4.57             56         0      Not Applicable
  11/17/2025 12 AM PST            4.56             55         -      Not Applicable
  11/17/2025 01 AM PST            4.55             54         -      Not Applicable
  11/17/2025 02 AM PST            4.55             54         0      Not Applicable
  11/17/2025 03 AM PST            4.54             52         -      Not Applicable
  11/17/2025 04 AM PST            4.54             52         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.