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: Jan 29 2026 at 1:16 PM PSTNext Issuance: Jan 30 2026 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:  01/29/2026 at 01:19 PM PST
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  01/24/2026 at 01:00 PM PST
# Maximum Observed Stage:                       4.95 Feet
# Maximum Observed Flow:                        110 cfs
#
# Earliest Date & Time of Maximum Forecast:     02/02/2026 at 02:00 AM PST
# Maximum Forecast Stage:                       4.85 Feet
# Maximum Forecast Flow:                        98 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  01/24/2026 01 PM PST            4.95            110                Not Applicable
  01/24/2026 02 PM PST            4.94            109         -      Not Applicable
  01/24/2026 03 PM PST            4.94            109         0      Not Applicable
  01/24/2026 04 PM PST            4.94            109         0      Not Applicable
  01/24/2026 05 PM PST            4.93            108         -      Not Applicable
  01/24/2026 06 PM PST            4.93            108         0      Not Applicable
  01/24/2026 07 PM PST            4.91            105         -      Not Applicable
  01/24/2026 08 PM PST            4.92            106         +      Not Applicable
  01/24/2026 09 PM PST            4.92            106         0      Not Applicable
  01/24/2026 10 PM PST            4.92            106         0      Not Applicable
  01/24/2026 11 PM PST            4.92            106         0      Not Applicable
  01/25/2026 12 AM PST            4.92            106         0      Not Applicable
  01/25/2026 01 AM PST            4.91            105         -      Not Applicable
  01/25/2026 02 AM PST            4.91            105         0      Not Applicable
  01/25/2026 03 AM PST            4.90            104         -      Not Applicable
  01/25/2026 04 AM PST            4.91            105         +      Not Applicable
  01/25/2026 05 AM PST            4.90            104         -      Not Applicable
  01/25/2026 06 AM PST            4.89            103         -      Not Applicable
  01/25/2026 07 AM PST            4.89            103         0      Not Applicable
  01/25/2026 08 AM PST            4.89            103         0      Not Applicable
  01/25/2026 09 AM PST            4.89            103         0      Not Applicable
  01/25/2026 10 AM PST            4.89            103         0      Not Applicable
  01/25/2026 11 AM PST            4.88            102         -      Not Applicable
  01/25/2026 12 PM PST            4.89            103         +      Not Applicable
  01/25/2026 01 PM PST            4.89            103         0      Not Applicable
  01/25/2026 02 PM PST            4.88            102         -      Not Applicable
  01/25/2026 03 PM PST            4.87            100         -      Not Applicable
  01/25/2026 04 PM PST            4.87            100         0      Not Applicable
  01/25/2026 05 PM PST            4.87            100         0      Not Applicable
  01/25/2026 06 PM PST            4.86             99         -      Not Applicable
  01/25/2026 07 PM PST            4.86             99         0      Not Applicable
  01/25/2026 08 PM PST            4.86             99         0      Not Applicable
  01/25/2026 09 PM PST            4.85             98         -      Not Applicable
  01/25/2026 10 PM PST            4.87            100         +      Not Applicable
  01/25/2026 11 PM PST            4.86             99         -      Not Applicable
  01/26/2026 12 AM PST            4.86             99         0      Not Applicable
  01/26/2026 01 AM PST            4.85             98         -      Not Applicable
  01/26/2026 02 AM PST            4.86             99         +      Not Applicable
  01/26/2026 03 AM PST            4.86             99         0      Not Applicable
  01/26/2026 04 AM PST            4.86             99         0      Not Applicable
  01/26/2026 05 AM PST            4.86             99         0      Not Applicable
  01/26/2026 06 AM PST            4.85             98         -      Not Applicable
  01/26/2026 07 AM PST            4.84             97         -      Not Applicable
  01/26/2026 08 AM PST            4.84             97         0      Not Applicable
  01/26/2026 09 AM PST            4.84             97         0      Not Applicable
  01/26/2026 10 AM PST            4.85             98         +      Not Applicable
  01/26/2026 11 AM PST            4.84             97         -      Not Applicable
  01/26/2026 12 PM PST            4.83             95         -      Not Applicable
  01/26/2026 01 PM PST            4.83             95         0      Not Applicable
  01/26/2026 02 PM PST            4.83             95         0      Not Applicable
  01/26/2026 03 PM PST            4.83             95         0      Not Applicable
  01/26/2026 04 PM PST            4.83             95         0      Not Applicable
  01/26/2026 05 PM PST            4.82             94         -      Not Applicable
  01/26/2026 06 PM PST            4.82             94         0      Not Applicable
  01/26/2026 07 PM PST            4.81             93         -      Not Applicable
  01/26/2026 08 PM PST            4.82             94         +      Not Applicable
  01/26/2026 09 PM PST            4.82             94         0      Not Applicable
  01/26/2026 10 PM PST            4.82             94         0      Not Applicable
  01/26/2026 11 PM PST            4.81             93         -      Not Applicable
  01/27/2026 12 AM PST            4.81             93         0      Not Applicable
  01/27/2026 01 AM PST            4.82             94         +      Not Applicable
  01/27/2026 02 AM PST            4.81             93         -      Not Applicable
  01/27/2026 03 AM PST            4.81             93         0      Not Applicable
  01/27/2026 04 AM PST            4.80             92         -      Not Applicable
  01/27/2026 05 AM PST            4.81             93         +      Not Applicable
  01/27/2026 06 AM PST            4.81             93         0      Not Applicable
  01/27/2026 07 AM PST            4.80             92         -      Not Applicable
  01/27/2026 08 AM PST            4.80             92         0      Not Applicable
  01/27/2026 09 AM PST            4.80             92         0      Not Applicable
  01/27/2026 10 AM PST            4.80             92         0      Not Applicable
  01/27/2026 11 AM PST            4.79             90         -      Not Applicable
  01/27/2026 12 PM PST            4.79             90         0      Not Applicable
  01/27/2026 01 PM PST            4.79             90         0      Not Applicable
  01/27/2026 02 PM PST            4.80             92         +      Not Applicable
  01/27/2026 03 PM PST            4.79             90         -      Not Applicable
  01/27/2026 04 PM PST            4.78             89         -      Not Applicable
  01/27/2026 05 PM PST            4.77             87         -      Not Applicable
  01/27/2026 06 PM PST            4.78             89         +      Not Applicable
  01/27/2026 07 PM PST            4.78             89         0      Not Applicable
  01/27/2026 08 PM PST            4.78             89         0      Not Applicable
  01/27/2026 09 PM PST            4.77             87         -      Not Applicable
  01/27/2026 10 PM PST            4.77             87         0      Not Applicable
  01/27/2026 11 PM PST            4.78             89         +      Not Applicable
  01/28/2026 12 AM PST            4.77             87         -      Not Applicable
  01/28/2026 01 AM PST            4.77             87         0      Not Applicable
  01/28/2026 02 AM PST            4.77             87         0      Not Applicable
  01/28/2026 03 AM PST            4.78             89         +      Not Applicable
  01/28/2026 04 AM PST            4.77             87         -      Not Applicable
  01/28/2026 05 AM PST            4.77             87         0      Not Applicable
  01/28/2026 06 AM PST            4.76             85         -      Not Applicable
  01/28/2026 07 AM PST            4.76             85         0      Not Applicable
  01/28/2026 08 AM PST            4.76             85         0      Not Applicable
  01/28/2026 09 AM PST            4.75             84         -      Not Applicable
  01/28/2026 10 AM PST            4.76             85         +      Not Applicable
  01/28/2026 11 AM PST            4.76             85         0      Not Applicable
  01/28/2026 12 PM PST            4.75             84         -      Not Applicable
  01/28/2026 01 PM PST            4.75             84         0      Not Applicable
  01/28/2026 02 PM PST            4.75             84         0      Not Applicable
  01/28/2026 03 PM PST            4.75             84         0      Not Applicable
  01/28/2026 04 PM PST            4.75             84         0      Not Applicable
  01/28/2026 05 PM PST            4.74             82         -      Not Applicable
  01/28/2026 06 PM PST            4.74             82         0      Not Applicable
  01/28/2026 07 PM PST            4.74             82         0      Not Applicable
  01/28/2026 08 PM PST            4.73             81         -      Not Applicable
  01/28/2026 09 PM PST            4.73             81         0      Not Applicable
  01/28/2026 10 PM PST            4.73             81         0      Not Applicable
  01/28/2026 11 PM PST            4.74             82         +      Not Applicable
  01/29/2026 12 AM PST            4.74             82         0      Not Applicable
  01/29/2026 01 AM PST            4.73             81         -      Not Applicable
  01/29/2026 02 AM PST            4.73             81         0      Not Applicable
  01/29/2026 03 AM PST            4.73             81         0      Not Applicable
  01/29/2026 04 AM PST            4.73             81         0      Not Applicable
  01/29/2026 05 AM PST            4.72             79         -      Not Applicable
  01/29/2026 06 AM PST            4.72             79         0      Not Applicable
  01/29/2026 07 AM PST            4.72             79         0      Not Applicable
  01/29/2026 08 AM PST            4.73             81         +      Not Applicable
  01/29/2026 09 AM PST            4.72             79         -      Not Applicable
  01/29/2026 10 AM PST            4.72             79         0      Not Applicable
  01/29/2026 11 AM PST            4.73             81         +      Not Applicable
  01/29/2026 12 PM PST            4.73             81         0      Not Applicable
  01/29/2026 01 PM PST            4.73             81         0      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  01/29/2026 02 PM PST            4.73             81                Not Applicable
  01/29/2026 03 PM PST            4.72             79         -      Not Applicable
  01/29/2026 04 PM PST            4.72             79         0      Not Applicable
  01/29/2026 05 PM PST            4.72             79         0      Not Applicable
  01/29/2026 06 PM PST            4.72             79         0      Not Applicable
  01/29/2026 07 PM PST            4.72             79         0      Not Applicable
  01/29/2026 08 PM PST            4.72             79         0      Not Applicable
  01/29/2026 09 PM PST            4.72             79         0      Not Applicable
  01/29/2026 10 PM PST            4.72             79         0      Not Applicable
  01/29/2026 11 PM PST            4.72             79         0      Not Applicable
  01/30/2026 12 AM PST            4.72             79         0      Not Applicable
  01/30/2026 01 AM PST            4.72             79         0      Not Applicable
  01/30/2026 02 AM PST            4.72             79         0      Not Applicable
  01/30/2026 03 AM PST            4.73             81         +      Not Applicable
  01/30/2026 04 AM PST            4.73             81         0      Not Applicable
  01/30/2026 05 AM PST            4.73             81         0      Not Applicable
  01/30/2026 06 AM PST            4.73             81         0      Not Applicable
  01/30/2026 07 AM PST            4.73             81         0      Not Applicable
  01/30/2026 08 AM PST            4.74             82         +      Not Applicable
  01/30/2026 09 AM PST            4.74             82         0      Not Applicable
  01/30/2026 10 AM PST            4.74             82         0      Not Applicable
  01/30/2026 11 AM PST            4.74             82         0      Not Applicable
  01/30/2026 12 PM PST            4.74             82         0      Not Applicable
  01/30/2026 01 PM PST            4.74             82         0      Not Applicable
  01/30/2026 02 PM PST            4.74             82         0      Not Applicable
  01/30/2026 03 PM PST            4.74             82         0      Not Applicable
  01/30/2026 04 PM PST            4.75             84         +      Not Applicable
  01/30/2026 05 PM PST            4.75             84         0      Not Applicable
  01/30/2026 06 PM PST            4.75             84         0      Not Applicable
  01/30/2026 07 PM PST            4.75             84         0      Not Applicable
  01/30/2026 08 PM PST            4.75             84         0      Not Applicable
  01/30/2026 09 PM PST            4.75             84         0      Not Applicable
  01/30/2026 10 PM PST            4.75             84         0      Not Applicable
  01/30/2026 11 PM PST            4.76             85         +      Not Applicable
  01/31/2026 12 AM PST            4.76             85         0      Not Applicable
  01/31/2026 01 AM PST            4.76             85         0      Not Applicable
  01/31/2026 02 AM PST            4.76             85         0      Not Applicable
  01/31/2026 03 AM PST            4.77             87         +      Not Applicable
  01/31/2026 04 AM PST            4.77             87         0      Not Applicable
  01/31/2026 05 AM PST            4.77             87         0      Not Applicable
  01/31/2026 06 AM PST            4.78             89         +      Not Applicable
  01/31/2026 07 AM PST            4.78             89         0      Not Applicable
  01/31/2026 08 AM PST            4.78             89         0      Not Applicable
  01/31/2026 09 AM PST            4.78             89         0      Not Applicable
  01/31/2026 10 AM PST            4.79             90         +      Not Applicable
  01/31/2026 11 AM PST            4.79             90         0      Not Applicable
  01/31/2026 12 PM PST            4.79             90         0      Not Applicable
  01/31/2026 01 PM PST            4.79             90         0      Not Applicable
  01/31/2026 02 PM PST            4.79             90         0      Not Applicable
  01/31/2026 03 PM PST            4.79             90         0      Not Applicable
  01/31/2026 04 PM PST            4.79             90         0      Not Applicable
  01/31/2026 05 PM PST            4.79             90         0      Not Applicable
  01/31/2026 06 PM PST            4.79             90         0      Not Applicable
  01/31/2026 07 PM PST            4.80             92         +      Not Applicable
  01/31/2026 08 PM PST            4.80             92         0      Not Applicable
  01/31/2026 09 PM PST            4.80             92         0      Not Applicable
  01/31/2026 10 PM PST            4.80             92         0      Not Applicable
  01/31/2026 11 PM PST            4.80             92         0      Not Applicable
  02/01/2026 12 AM PST            4.81             93         +      Not Applicable
  02/01/2026 01 AM PST            4.81             93         0      Not Applicable
  02/01/2026 02 AM PST            4.82             94         +      Not Applicable
  02/01/2026 03 AM PST            4.82             94         0      Not Applicable
  02/01/2026 04 AM PST            4.82             94         0      Not Applicable
  02/01/2026 05 AM PST            4.83             95         +      Not Applicable
  02/01/2026 06 AM PST            4.83             95         0      Not Applicable
  02/01/2026 07 AM PST            4.83             95         0      Not Applicable
  02/01/2026 08 AM PST            4.83             95         0      Not Applicable
  02/01/2026 09 AM PST            4.84             97         +      Not Applicable
  02/01/2026 10 AM PST            4.84             97         0      Not Applicable
  02/01/2026 11 AM PST            4.84             97         0      Not Applicable
  02/01/2026 12 PM PST            4.84             97         0      Not Applicable
  02/01/2026 01 PM PST            4.84             97         0      Not Applicable
  02/01/2026 02 PM PST            4.84             97         0      Not Applicable
  02/01/2026 03 PM PST            4.84             97         0      Not Applicable
  02/01/2026 04 PM PST            4.84             97         0      Not Applicable
  02/01/2026 05 PM PST            4.84             97         0      Not Applicable
  02/01/2026 06 PM PST            4.84             97         0      Not Applicable
  02/01/2026 07 PM PST            4.84             97         0      Not Applicable
  02/01/2026 08 PM PST            4.84             97         0      Not Applicable
  02/01/2026 09 PM PST            4.84             97         0      Not Applicable
  02/01/2026 10 PM PST            4.84             97         0      Not Applicable
  02/01/2026 11 PM PST            4.84             97         0      Not Applicable
  02/02/2026 12 AM PST            4.84             97         0      Not Applicable
  02/02/2026 01 AM PST            4.84             97         0      Not Applicable
  02/02/2026 02 AM PST            4.85             98         +      Not Applicable
  02/02/2026 03 AM PST            4.85             98         0      Not Applicable
  02/02/2026 04 AM PST            4.85             98         0      Not Applicable
  02/02/2026 05 AM PST            4.85             98         0      Not Applicable
  02/02/2026 06 AM PST            4.85             98         0      Not Applicable
  02/02/2026 07 AM PST            4.85             98         0      Not Applicable
  02/02/2026 08 AM PST            4.85             98         0      Not Applicable
  02/02/2026 09 AM PST            4.85             98         0      Not Applicable
  02/02/2026 10 AM PST            4.85             98         0      Not Applicable
  02/02/2026 11 AM PST            4.85             98         0      Not Applicable
  02/02/2026 12 PM PST            4.85             98         0      Not Applicable
  02/02/2026 01 PM PST            4.85             98         0      Not Applicable
  02/02/2026 02 PM PST            4.84             97         -      Not Applicable
  02/02/2026 03 PM PST            4.84             97         0      Not Applicable
  02/02/2026 04 PM PST            4.84             97         0      Not Applicable
  02/02/2026 05 PM PST            4.84             97         0      Not Applicable
  02/02/2026 06 PM PST            4.84             97         0      Not Applicable
  02/02/2026 07 PM PST            4.84             97         0      Not Applicable
  02/02/2026 08 PM PST            4.84             97         0      Not Applicable
  02/02/2026 09 PM PST            4.84             97         0      Not Applicable
  02/02/2026 10 PM PST            4.83             95         -      Not Applicable
  02/02/2026 11 PM PST            4.83             95         0      Not Applicable
  02/03/2026 12 AM PST            4.83             95         0      Not Applicable
  02/03/2026 01 AM PST            4.84             97         +      Not Applicable
  02/03/2026 02 AM PST            4.84             97         0      Not Applicable
  02/03/2026 03 AM PST            4.84             97         0      Not Applicable
  02/03/2026 04 AM PST            4.84             97         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.