MIDDLE FORK COSUMNES RIVER - SOMERSET (SOSC1)
Latitude: 38.62º NLongitude: 120.70º WElevation: 1821 FeetForecast Type: Unofficial Location
Location: El Dorado County in CaliforniaBulletin Group: San JoaquinRiver Group: North San Joaquin
Issuance Time: Oct 11 2026 at 7:08 AM PDTNext Issuance: Oct 12 2026 at 9:00 AM PDT
Action: 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:  10/11/2026 at 07:09 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  10/09/2026 at 11:00 AM PDT
# Maximum Observed Stage:                       3.91 Feet
# Maximum Observed Flow:                        7 cfs
#
# Earliest Date & Time of Maximum Forecast:     10/12/2026 at 09:00 PM PDT
# Maximum Forecast Stage:                       3.94 Feet
# Maximum Forecast Flow:                        8 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  10/06/2026 07 AM PDT            3.89              7                Not Applicable
  10/06/2026 08 AM PDT            3.89              7         0      Not Applicable
  10/06/2026 09 AM PDT            3.90              7         +      Not Applicable
  10/06/2026 10 AM PDT            3.90              7         0      Not Applicable
  10/06/2026 11 AM PDT            3.90              7         0      Not Applicable
  10/06/2026 12 PM PDT            3.90              7         0      Not Applicable
  10/06/2026 01 PM PDT            3.89              7         -      Not Applicable
  10/06/2026 02 PM PDT            3.88              7         -      Not Applicable
  10/06/2026 03 PM PDT            3.88              7         0      Not Applicable
  10/06/2026 04 PM PDT            3.87              6         -      Not Applicable
  10/06/2026 05 PM PDT            3.87              6         0      Not Applicable
  10/06/2026 06 PM PDT            3.86              6         -      Not Applicable
  10/06/2026 07 PM PDT            3.86              6         0      Not Applicable
  10/06/2026 08 PM PDT            3.87              6         +      Not Applicable
  10/06/2026 09 PM PDT            3.87              6         0      Not Applicable
  10/06/2026 10 PM PDT            3.87              6         0      Not Applicable
  10/06/2026 11 PM PDT            3.87              6         0      Not Applicable
  10/07/2026 12 AM PDT            3.88              7         +      Not Applicable
  10/07/2026 01 AM PDT            3.88              7         0      Not Applicable
  10/07/2026 02 AM PDT            3.88              7         0      Not Applicable
  10/07/2026 03 AM PDT            3.88              7         0      Not Applicable
  10/07/2026 04 AM PDT            3.88              7         0      Not Applicable
  10/07/2026 05 AM PDT            3.89              7         +      Not Applicable
  10/07/2026 06 AM PDT            3.89              7         0      Not Applicable
  10/07/2026 07 AM PDT            3.89              7         0      Not Applicable
  10/07/2026 08 AM PDT            3.89              7         0      Not Applicable
  10/07/2026 09 AM PDT            3.89              7         0      Not Applicable
  10/07/2026 10 AM PDT            3.90              7         +      Not Applicable
  10/07/2026 11 AM PDT            3.90              7         0      Not Applicable
  10/07/2026 12 PM PDT            3.89              7         -      Not Applicable
  10/07/2026 01 PM PDT            3.88              7         -      Not Applicable
  10/07/2026 02 PM PDT            3.88              7         0      Not Applicable
  10/07/2026 03 PM PDT            3.87              6         -      Not Applicable
  10/07/2026 04 PM PDT            3.87              6         0      Not Applicable
  10/07/2026 05 PM PDT            3.86              6         -      Not Applicable
  10/07/2026 06 PM PDT            3.86              6         0      Not Applicable
  10/07/2026 07 PM PDT            3.86              6         0      Not Applicable
  10/07/2026 08 PM PDT            3.86              6         0      Not Applicable
  10/07/2026 09 PM PDT            3.86              6         0      Not Applicable
  10/07/2026 10 PM PDT            3.87              6         +      Not Applicable
  10/07/2026 11 PM PDT            3.87              6         0      Not Applicable
  10/08/2026 12 AM PDT            3.87              6         0      Not Applicable
  10/08/2026 01 AM PDT            3.87              6         0      Not Applicable
  10/08/2026 02 AM PDT            3.88              7         +      Not Applicable
  10/08/2026 03 AM PDT            3.88              7         0      Not Applicable
  10/08/2026 04 AM PDT            3.88              7         0      Not Applicable
  10/08/2026 05 AM PDT            3.88              7         0      Not Applicable
  10/08/2026 06 AM PDT            3.88              7         0      Not Applicable
  10/08/2026 07 AM PDT            3.88              7         0      Not Applicable
  10/08/2026 08 AM PDT            3.89              7         +      Not Applicable
  10/08/2026 09 AM PDT            3.89              7         0      Not Applicable
  10/08/2026 10 AM PDT            3.89              7         0      Not Applicable
  10/08/2026 11 AM PDT            3.89              7         0      Not Applicable
  10/08/2026 12 PM PDT            3.89              7         0      Not Applicable
  10/08/2026 01 PM PDT            3.88              7         -      Not Applicable
  10/08/2026 02 PM PDT            3.87              6         -      Not Applicable
  10/08/2026 03 PM PDT            3.87              6         0      Not Applicable
  10/08/2026 04 PM PDT            3.86              6         -      Not Applicable
  10/08/2026 05 PM PDT            3.86              6         0      Not Applicable
  10/08/2026 06 PM PDT            3.86              6         0      Not Applicable
  10/08/2026 07 PM PDT            3.86              6         0      Not Applicable
  10/08/2026 08 PM PDT            3.86              6         0      Not Applicable
  10/08/2026 09 PM PDT            3.86              6         0      Not Applicable
  10/08/2026 10 PM PDT            3.86              6         0      Not Applicable
  10/08/2026 11 PM PDT            3.86              6         0      Not Applicable
  10/09/2026 12 AM PDT            3.87              6         +      Not Applicable
  10/09/2026 01 AM PDT            3.87              6         0      Not Applicable
  10/09/2026 02 AM PDT            3.87              6         0      Not Applicable
  10/09/2026 03 AM PDT            3.88              7         +      Not Applicable
  10/09/2026 04 AM PDT            3.88              7         0      Not Applicable
  10/09/2026 05 AM PDT            3.88              7         0      Not Applicable
  10/09/2026 06 AM PDT            3.88              7         0      Not Applicable
  10/09/2026 07 AM PDT            3.88              7         0      Not Applicable
  10/09/2026 08 AM PDT            3.88              7         0      Not Applicable
  10/09/2026 09 AM PDT            3.91              7         +      Not Applicable
  10/09/2026 10 AM PDT            3.91              7         0      Not Applicable
  10/09/2026 11 AM PDT            3.91              7         0      Not Applicable
  10/09/2026 12 PM PDT            3.90              7         -      Not Applicable
  10/09/2026 01 PM PDT            3.90              7         0      Not Applicable
  10/09/2026 02 PM PDT            3.89              7         -      Not Applicable
  10/09/2026 03 PM PDT            3.88              7         -      Not Applicable
  10/09/2026 04 PM PDT            3.88              7         0      Not Applicable
  10/09/2026 05 PM PDT            3.88              7         0      Not Applicable
  10/09/2026 06 PM PDT            3.87              6         -      Not Applicable
  10/09/2026 07 PM PDT            3.87              6         0      Not Applicable
  10/09/2026 08 PM PDT            3.87              6         0      Not Applicable
  10/09/2026 09 PM PDT            3.87              6         0      Not Applicable
  10/09/2026 10 PM PDT            3.88              7         +      Not Applicable
  10/09/2026 11 PM PDT            3.88              7         0      Not Applicable
  10/10/2026 12 AM PDT            3.88              7         0      Not Applicable
  10/10/2026 01 AM PDT            3.89              7         +      Not Applicable
  10/10/2026 02 AM PDT            3.89              7         0      Not Applicable
  10/10/2026 03 AM PDT            3.89              7         0      Not Applicable
  10/10/2026 04 AM PDT            3.89              7         0      Not Applicable
  10/10/2026 05 AM PDT            3.89              7         0      Not Applicable
  10/10/2026 06 AM PDT            3.90              7         +      Not Applicable
  10/10/2026 07 AM PDT            3.90              7         0      Not Applicable
  10/10/2026 08 AM PDT            3.90              7         0      Not Applicable
  10/10/2026 09 AM PDT            3.90              7         0      Not Applicable
  10/10/2026 10 AM PDT            3.90              7         0      Not Applicable
  10/10/2026 11 AM PDT            3.90              7         0      Not Applicable
  10/10/2026 12 PM PDT            3.90              7         0      Not Applicable
  10/10/2026 01 PM PDT            3.90              7         0      Not Applicable
  10/10/2026 02 PM PDT            3.89              7         -      Not Applicable
  10/10/2026 03 PM PDT            3.89              7         0      Not Applicable
  10/10/2026 04 PM PDT            3.89              7         0      Not Applicable
  10/10/2026 05 PM PDT            3.88              7         -      Not Applicable
  10/10/2026 06 PM PDT            3.88              7         0      Not Applicable
  10/10/2026 07 PM PDT            3.88              7         0      Not Applicable
  10/10/2026 08 PM PDT            3.88              7         0      Not Applicable
  10/10/2026 09 PM PDT            3.88              7         0      Not Applicable
  10/10/2026 10 PM PDT            3.88              7         0      Not Applicable
  10/10/2026 11 PM PDT            3.88              7         0      Not Applicable
  10/11/2026 12 AM PDT            3.88              7         0      Not Applicable
  10/11/2026 01 AM PDT            3.89              7         +      Not Applicable
  10/11/2026 02 AM PDT            3.89              7         0      Not Applicable
  10/11/2026 03 AM PDT            3.89              7         0      Not Applicable
  10/11/2026 04 AM PDT            3.89              7         0      Not Applicable
  10/11/2026 05 AM PDT            3.89              7         0      Not Applicable
  10/11/2026 06 AM PDT            3.89              7         0      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  10/11/2026 07 AM PDT            3.89              7                Not Applicable
  10/11/2026 08 AM PDT            3.89              7         0      Not Applicable
  10/11/2026 09 AM PDT            3.89              7         0      Not Applicable
  10/11/2026 10 AM PDT            3.89              7         0      Not Applicable
  10/11/2026 11 AM PDT            3.89              7         0      Not Applicable
  10/11/2026 12 PM PDT            3.89              7         0      Not Applicable
  10/11/2026 01 PM PDT            3.89              7         0      Not Applicable
  10/11/2026 02 PM PDT            3.89              7         0      Not Applicable
  10/11/2026 03 PM PDT            3.89              7         0      Not Applicable
  10/11/2026 04 PM PDT            3.89              7         0      Not Applicable
  10/11/2026 05 PM PDT            3.89              7         0      Not Applicable
  10/11/2026 06 PM PDT            3.89              7         0      Not Applicable
  10/11/2026 07 PM PDT            3.89              7         0      Not Applicable
  10/11/2026 08 PM PDT            3.89              7         0      Not Applicable
  10/11/2026 09 PM PDT            3.89              7         0      Not Applicable
  10/11/2026 10 PM PDT            3.89              7         0      Not Applicable
  10/11/2026 11 PM PDT            3.89              7         0      Not Applicable
  10/12/2026 12 AM PDT            3.89              7         0      Not Applicable
  10/12/2026 01 AM PDT            3.89              7         0      Not Applicable
  10/12/2026 02 AM PDT            3.89              7         0      Not Applicable
  10/12/2026 03 AM PDT            3.89              7         0      Not Applicable
  10/12/2026 04 AM PDT            3.89              7         0      Not Applicable
  10/12/2026 05 AM PDT            3.89              7         0      Not Applicable
  10/12/2026 06 AM PDT            3.89              7         0      Not Applicable
  10/12/2026 07 AM PDT            3.89              7         0      Not Applicable
  10/12/2026 08 AM PDT            3.89              7         0      Not Applicable
  10/12/2026 09 AM PDT            3.89              7         0      Not Applicable
  10/12/2026 10 AM PDT            3.90              7         +      Not Applicable
  10/12/2026 11 AM PDT            3.90              7         0      Not Applicable
  10/12/2026 12 PM PDT            3.90              7         0      Not Applicable
  10/12/2026 01 PM PDT            3.90              7         0      Not Applicable
  10/12/2026 02 PM PDT            3.91              7         +      Not Applicable
  10/12/2026 03 PM PDT            3.91              7         0      Not Applicable
  10/12/2026 04 PM PDT            3.92              8         +      Not Applicable
  10/12/2026 05 PM PDT            3.92              8         0      Not Applicable
  10/12/2026 06 PM PDT            3.93              8         +      Not Applicable
  10/12/2026 07 PM PDT            3.93              8         0      Not Applicable
  10/12/2026 08 PM PDT            3.93              8         0      Not Applicable
  10/12/2026 09 PM PDT            3.94              8         +      Not Applicable
  10/12/2026 10 PM PDT            3.94              8         0      Not Applicable
  10/12/2026 11 PM PDT            3.94              8         0      Not Applicable
  10/13/2026 12 AM PDT            3.94              8         0      Not Applicable
  10/13/2026 01 AM PDT            3.94              8         0      Not Applicable
  10/13/2026 02 AM PDT            3.94              8         0      Not Applicable
  10/13/2026 03 AM PDT            3.94              8         0      Not Applicable
  10/13/2026 04 AM PDT            3.93              8         -      Not Applicable
  10/13/2026 05 AM PDT            3.93              8         0      Not Applicable
  10/13/2026 06 AM PDT            3.93              8         0      Not Applicable
  10/13/2026 07 AM PDT            3.92              8         -      Not Applicable
  10/13/2026 08 AM PDT            3.92              8         0      Not Applicable
  10/13/2026 09 AM PDT            3.92              8         0      Not Applicable
  10/13/2026 10 AM PDT            3.92              8         0      Not Applicable
  10/13/2026 11 AM PDT            3.92              8         0      Not Applicable
  10/13/2026 12 PM PDT            3.92              8         0      Not Applicable
  10/13/2026 01 PM PDT            3.91              7         -      Not Applicable
  10/13/2026 02 PM PDT            3.91              7         0      Not Applicable
  10/13/2026 03 PM PDT            3.91              7         0      Not Applicable
  10/13/2026 04 PM PDT            3.91              7         0      Not Applicable
  10/13/2026 05 PM PDT            3.91              7         0      Not Applicable
  10/13/2026 06 PM PDT            3.90              7         -      Not Applicable
  10/13/2026 07 PM PDT            3.90              7         0      Not Applicable
  10/13/2026 08 PM PDT            3.90              7         0      Not Applicable
  10/13/2026 09 PM PDT            3.90              7         0      Not Applicable
  10/13/2026 10 PM PDT            3.90              7         0      Not Applicable
  10/13/2026 11 PM PDT            3.90              7         0      Not Applicable
  10/14/2026 12 AM PDT            3.89              7         -      Not Applicable
  10/14/2026 01 AM PDT            3.89              7         0      Not Applicable
  10/14/2026 02 AM PDT            3.89              7         0      Not Applicable
  10/14/2026 03 AM PDT            3.89              7         0      Not Applicable
  10/14/2026 04 AM PDT            3.89              7         0      Not Applicable
  10/14/2026 05 AM PDT            3.89              7         0      Not Applicable
  10/14/2026 06 AM PDT            3.89              7         0      Not Applicable
  10/14/2026 07 AM PDT            3.89              7         0      Not Applicable
  10/14/2026 08 AM PDT            3.89              7         0      Not Applicable
  10/14/2026 09 AM PDT            3.89              7         0      Not Applicable
  10/14/2026 10 AM PDT            3.89              7         0      Not Applicable
  10/14/2026 11 AM PDT            3.89              7         0      Not Applicable
  10/14/2026 12 PM PDT            3.89              7         0      Not Applicable
  10/14/2026 01 PM PDT            3.89              7         0      Not Applicable
  10/14/2026 02 PM PDT            3.89              7         0      Not Applicable
  10/14/2026 03 PM PDT            3.89              7         0      Not Applicable
  10/14/2026 04 PM PDT            3.88              7         -      Not Applicable
  10/14/2026 05 PM PDT            3.88              7         0      Not Applicable
  10/14/2026 06 PM PDT            3.88              7         0      Not Applicable
  10/14/2026 07 PM PDT            3.88              7         0      Not Applicable
  10/14/2026 08 PM PDT            3.88              7         0      Not Applicable
  10/14/2026 09 PM PDT            3.88              7         0      Not Applicable
  10/14/2026 10 PM PDT            3.88              7         0      Not Applicable
  10/14/2026 11 PM PDT            3.88              7         0      Not Applicable
  10/15/2026 12 AM PDT            3.88              7         0      Not Applicable
  10/15/2026 01 AM PDT            3.88              7         0      Not Applicable
  10/15/2026 02 AM PDT            3.88              7         0      Not Applicable
  10/15/2026 03 AM PDT            3.88              7         0      Not Applicable
  10/15/2026 04 AM PDT            3.88              7         0      Not Applicable
  10/15/2026 05 AM PDT            3.88              7         0      Not Applicable
  10/15/2026 06 AM PDT            3.88              7         0      Not Applicable
  10/15/2026 07 AM PDT            3.88              7         0      Not Applicable
  10/15/2026 08 AM PDT            3.88              7         0      Not Applicable
  10/15/2026 09 AM PDT            3.88              7         0      Not Applicable
  10/15/2026 10 AM PDT            3.88              7         0      Not Applicable
  10/15/2026 11 AM PDT            3.88              7         0      Not Applicable
  10/15/2026 12 PM PDT            3.88              7         0      Not Applicable
  10/15/2026 01 PM PDT            3.88              7         0      Not Applicable
  10/15/2026 02 PM PDT            3.88              7         0      Not Applicable
  10/15/2026 03 PM PDT            3.88              7         0      Not Applicable
  10/15/2026 04 PM PDT            3.88              7         0      Not Applicable
  10/15/2026 05 PM PDT            3.88              7         0      Not Applicable
  10/15/2026 06 PM PDT            3.88              7         0      Not Applicable
  10/15/2026 07 PM PDT            3.88              7         0      Not Applicable
  10/15/2026 08 PM PDT            3.88              7         0      Not Applicable
  10/15/2026 09 PM PDT            3.88              7         0      Not Applicable
  10/15/2026 10 PM PDT            3.88              7         0      Not Applicable
  10/15/2026 11 PM PDT            3.88              7         0      Not Applicable
  10/16/2026 12 AM PDT            3.88              7         0      Not Applicable
  10/16/2026 01 AM PDT            3.88              7         0      Not Applicable
  10/16/2026 02 AM PDT            3.88              7         0      Not Applicable
  10/16/2026 03 AM PDT            3.88              7         0      Not Applicable
  10/16/2026 04 AM PDT            3.88              7         0      Not Applicable
  10/16/2026 05 AM PDT            3.88              7         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.