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

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MIDDLE FORK COSUMNES RIVER - SOMERSET (SOSC1)
Latitude: 38.62º NLongitude: 120.70º WElevation: 1821 Feet
Location: El Dorado County in CaliforniaRiver Group: San Joaquin
Issuance Time: Mar 31 2023 at 2:02 PM PDTNext Issuance: Apr 01 2023 at 9:00 AM PDT
Monitor Stage: N/A Flood Stage: N/A

# Tabular Observed and Forecast Hydrograph Information
#
# Location: Middle Fork Cosumnes River - Somerset (SOSC1)
#
# File Generation Time:  03/31/2023 at 02:05 PM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  03/28/2023 at 08:00 PM PDT
# Maximum Observed Stage:                       7.5 Feet
# Maximum Observed Flow:                        838 cfs
#
# Earliest Date & Time of Maximum Forecast:     04/03/2023 at 09:00 AM PDT
# Maximum Forecast Stage:                       7.0 Feet
# Maximum Forecast Flow:                        647 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  03/26/2023 02 PM PDT             7.2            730                Not Applicable
  03/26/2023 03 PM PDT             7.2            727         -      Not Applicable
  03/26/2023 04 PM PDT             7.2            723         -      Not Applicable
  03/26/2023 05 PM PDT             7.2            723         0      Not Applicable
  03/26/2023 06 PM PDT             7.2            716         -      Not Applicable
  03/26/2023 07 PM PDT             7.2            716         0      Not Applicable
  03/26/2023 08 PM PDT             7.2            716         0      Not Applicable
  03/26/2023 09 PM PDT             7.2            710         -      Not Applicable
  03/26/2023 10 PM PDT             7.2            706         -      Not Applicable
  03/26/2023 11 PM PDT             7.2            710         +      Not Applicable
  03/27/2023 12 AM PDT             7.1            699         -      Not Applicable
  03/27/2023 01 AM PDT             7.1            699         0      Not Applicable
  03/27/2023 02 AM PDT             7.1            696         -      Not Applicable
  03/27/2023 03 AM PDT             7.1            696         0      Not Applicable
  03/27/2023 04 AM PDT             7.1            689         -      Not Applicable
  03/27/2023 05 AM PDT             7.1            693         +      Not Applicable
  03/27/2023 06 AM PDT             7.1            686         -      Not Applicable
  03/27/2023 07 AM PDT             7.1            683         -      Not Applicable
  03/27/2023 08 AM PDT             7.1            683         0      Not Applicable
  03/27/2023 09 AM PDT             7.1            673         -      Not Applicable
  03/27/2023 10 AM PDT             7.1            673         0      Not Applicable
  03/27/2023 11 AM PDT             7.1            683         +      Not Applicable
  03/27/2023 12 PM PDT             7.1            679         -      Not Applicable
  03/27/2023 01 PM PDT             7.1            676         -      Not Applicable
  03/27/2023 02 PM PDT             7.1            673         -      Not Applicable
  03/27/2023 03 PM PDT             7.1            673         0      Not Applicable
  03/27/2023 04 PM PDT             7.0            669         -      Not Applicable
  03/27/2023 05 PM PDT             7.0            663         -      Not Applicable
  03/27/2023 06 PM PDT             7.0            660         -      Not Applicable
  03/27/2023 07 PM PDT             7.0            656         -      Not Applicable
  03/27/2023 08 PM PDT             7.0            663         +      Not Applicable
  03/27/2023 09 PM PDT             7.0            660         -      Not Applicable
  03/27/2023 10 PM PDT             7.0            663         +      Not Applicable
  03/27/2023 11 PM PDT             7.0            663         0      Not Applicable
  03/28/2023 12 AM PDT             7.0            656         -      Not Applicable
  03/28/2023 01 AM PDT             7.0            660         +      Not Applicable
  03/28/2023 02 AM PDT             7.0            663         +      Not Applicable
  03/28/2023 03 AM PDT             7.0            653         -      Not Applicable
  03/28/2023 04 AM PDT             7.0            653         0      Not Applicable
  03/28/2023 05 AM PDT             7.0            650         -      Not Applicable
  03/28/2023 06 AM PDT             7.0            653         +      Not Applicable
  03/28/2023 07 AM PDT             7.0            647         -      Not Applicable
  03/28/2023 08 AM PDT             7.0            644         -      Not Applicable
  03/28/2023 09 AM PDT             7.0            640         -      Not Applicable
  03/28/2023 10 AM PDT             7.0            650         +      Not Applicable
  03/28/2023 11 AM PDT             6.9            634         -      Not Applicable
  03/28/2023 12 PM PDT             7.0            640         +      Not Applicable
  03/28/2023 01 PM PDT             7.0            656         +      Not Applicable
  03/28/2023 02 PM PDT             7.1            673         +      Not Applicable
  03/28/2023 03 PM PDT             7.2            706         +      Not Applicable
  03/28/2023 04 PM PDT             7.3            744         +      Not Applicable
  03/28/2023 05 PM PDT             7.4            784         +      Not Applicable
  03/28/2023 06 PM PDT             7.4            805         +      Not Applicable
  03/28/2023 07 PM PDT             7.5            831         +      Not Applicable
  03/28/2023 08 PM PDT             7.5            838         +      Not Applicable
  03/28/2023 09 PM PDT             7.5            820         -      Not Applicable
  03/28/2023 10 PM PDT             7.5            813         -      Not Applicable
  03/28/2023 11 PM PDT             7.4            802         -      Not Applicable
  03/29/2023 12 AM PDT             7.4            798         -      Not Applicable
  03/29/2023 01 AM PDT             7.4            787         -      Not Applicable
  03/29/2023 02 AM PDT             7.4            776         -      Not Applicable
  03/29/2023 03 AM PDT             7.3            758         -      Not Applicable
  03/29/2023 04 AM PDT             7.3            755         -      Not Applicable
  03/29/2023 05 AM PDT             7.2            737         -      Not Applicable
  03/29/2023 06 AM PDT             7.2            723         -      Not Applicable
  03/29/2023 07 AM PDT             7.2            730         +      Not Applicable
  03/29/2023 08 AM PDT             7.2            737         +      Not Applicable
  03/29/2023 09 AM PDT             7.3            741         +      Not Applicable
  03/29/2023 10 AM PDT             7.2            737         -      Not Applicable
  03/29/2023 11 AM PDT             7.2            727         -      Not Applicable
  03/29/2023 12 PM PDT             7.2            713         -      Not Applicable
  03/29/2023 01 PM PDT             7.1            696         -      Not Applicable
  03/29/2023 02 PM PDT             7.1            696         0      Not Applicable
  03/29/2023 03 PM PDT             7.2            706         +      Not Applicable
  03/29/2023 04 PM PDT             7.1            699         -      Not Applicable
  03/29/2023 05 PM PDT             7.1            699         0      Not Applicable
  03/29/2023 06 PM PDT             7.2            720         +      Not Applicable
  03/29/2023 07 PM PDT             7.2            730         +      Not Applicable
  03/29/2023 08 PM PDT             7.3            751         +      Not Applicable
  03/29/2023 09 PM PDT             7.3            751         0      Not Applicable
  03/29/2023 10 PM PDT             7.2            734         -      Not Applicable
  03/29/2023 11 PM PDT             7.2            730         -      Not Applicable
  03/30/2023 12 AM PDT             7.2            720         -      Not Applicable
  03/30/2023 01 AM PDT             7.2            727         +      Not Applicable
  03/30/2023 02 AM PDT             7.2            727         0      Not Applicable
  03/30/2023 03 AM PDT             7.2            706         -      Not Applicable
  03/30/2023 04 AM PDT             7.1            696         -      Not Applicable
  03/30/2023 05 AM PDT             7.1            686         -      Not Applicable
  03/30/2023 06 AM PDT             7.1            686         0      Not Applicable
  03/30/2023 07 AM PDT             7.1            676         -      Not Applicable
  03/30/2023 08 AM PDT             7.1            673         -      Not Applicable
  03/30/2023 09 AM PDT             7.0            660         -      Not Applicable
  03/30/2023 10 AM PDT             7.0            666         +      Not Applicable
  03/30/2023 11 AM PDT             7.0            656         -      Not Applicable
  03/30/2023 12 PM PDT             7.0            650         -      Not Applicable
  03/30/2023 01 PM PDT             7.0            647         -      Not Applicable
  03/30/2023 02 PM PDT             7.0            647         0      Not Applicable
  03/30/2023 03 PM PDT             7.0            647         0      Not Applicable
  03/30/2023 04 PM PDT             7.0            637         -      Not Applicable
  03/30/2023 05 PM PDT             7.0            647         +      Not Applicable
  03/30/2023 06 PM PDT             7.0            647         0      Not Applicable
  03/30/2023 07 PM PDT             7.0            656         +      Not Applicable
  03/30/2023 08 PM PDT             7.0            653         -      Not Applicable
  03/30/2023 09 PM PDT             7.0            650         -      Not Applicable
  03/30/2023 10 PM PDT             7.0            653         +      Not Applicable
  03/30/2023 11 PM PDT             7.0            653         0      Not Applicable
  03/31/2023 12 AM PDT             7.0            653         0      Not Applicable
  03/31/2023 01 AM PDT             7.0            637         -      Not Applicable
  03/31/2023 02 AM PDT             6.9            634         -      Not Applicable
  03/31/2023 03 AM PDT             6.9            634         0      Not Applicable
  03/31/2023 04 AM PDT             6.9            631         -      Not Applicable
  03/31/2023 05 AM PDT             6.9            628         -      Not Applicable
  03/31/2023 06 AM PDT             6.9            622         -      Not Applicable
  03/31/2023 07 AM PDT             6.9            618         -      Not Applicable
  03/31/2023 08 AM PDT             6.9            615         -      Not Applicable
  03/31/2023 09 AM PDT             6.9            609         -      Not Applicable
  03/31/2023 10 AM PDT             6.9            612         +      Not Applicable
  03/31/2023 11 AM PDT             6.9            609         -      Not Applicable
  03/31/2023 12 PM PDT             6.8            600         -      Not Applicable
  03/31/2023 01 PM PDT             6.8            597         -      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  03/31/2023 02 PM PDT             6.8            597                Not Applicable
  03/31/2023 03 PM PDT             6.8            594         -      Not Applicable
  03/31/2023 04 PM PDT             6.8            594         0      Not Applicable
  03/31/2023 05 PM PDT             6.8            591         -      Not Applicable
  03/31/2023 06 PM PDT             6.8            588         -      Not Applicable
  03/31/2023 07 PM PDT             6.8            588         0      Not Applicable
  03/31/2023 08 PM PDT             6.8            585         -      Not Applicable
  03/31/2023 09 PM PDT             6.8            585         0      Not Applicable
  03/31/2023 10 PM PDT             6.8            582         -      Not Applicable
  03/31/2023 11 PM PDT             6.8            582         0      Not Applicable
  04/01/2023 12 AM PDT             6.8            579         -      Not Applicable
  04/01/2023 01 AM PDT             6.8            579         0      Not Applicable
  04/01/2023 02 AM PDT             6.8            576         -      Not Applicable
  04/01/2023 03 AM PDT             6.8            576         0      Not Applicable
  04/01/2023 04 AM PDT             6.8            576         0      Not Applicable
  04/01/2023 05 AM PDT             6.8            576         0      Not Applicable
  04/01/2023 06 AM PDT             6.8            579         +      Not Applicable
  04/01/2023 07 AM PDT             6.8            579         0      Not Applicable
  04/01/2023 08 AM PDT             6.8            582         +      Not Applicable
  04/01/2023 09 AM PDT             6.8            582         0      Not Applicable
  04/01/2023 10 AM PDT             6.8            582         0      Not Applicable
  04/01/2023 11 AM PDT             6.8            582         0      Not Applicable
  04/01/2023 12 PM PDT             6.8            579         -      Not Applicable
  04/01/2023 01 PM PDT             6.8            579         0      Not Applicable
  04/01/2023 02 PM PDT             6.8            576         -      Not Applicable
  04/01/2023 03 PM PDT             6.7            573         -      Not Applicable
  04/01/2023 04 PM PDT             6.7            573         0      Not Applicable
  04/01/2023 05 PM PDT             6.7            570         -      Not Applicable
  04/01/2023 06 PM PDT             6.7            567         -      Not Applicable
  04/01/2023 07 PM PDT             6.7            567         0      Not Applicable
  04/01/2023 08 PM PDT             6.7            564         -      Not Applicable
  04/01/2023 09 PM PDT             6.7            564         0      Not Applicable
  04/01/2023 10 PM PDT             6.7            564         0      Not Applicable
  04/01/2023 11 PM PDT             6.7            570         +      Not Applicable
  04/02/2023 12 AM PDT             6.8            576         +      Not Applicable
  04/02/2023 01 AM PDT             6.8            582         +      Not Applicable
  04/02/2023 02 AM PDT             6.8            588         +      Not Applicable
  04/02/2023 03 AM PDT             6.8            594         +      Not Applicable
  04/02/2023 04 AM PDT             6.8            600         +      Not Applicable
  04/02/2023 05 AM PDT             6.8            603         +      Not Applicable
  04/02/2023 06 AM PDT             6.8            606         +      Not Applicable
  04/02/2023 07 AM PDT             6.8            606         0      Not Applicable
  04/02/2023 08 AM PDT             6.8            603         -      Not Applicable
  04/02/2023 09 AM PDT             6.8            603         0      Not Applicable
  04/02/2023 10 AM PDT             6.8            600         -      Not Applicable
  04/02/2023 11 AM PDT             6.8            597         -      Not Applicable
  04/02/2023 12 PM PDT             6.8            594         -      Not Applicable
  04/02/2023 01 PM PDT             6.8            591         -      Not Applicable
  04/02/2023 02 PM PDT             6.8            588         -      Not Applicable
  04/02/2023 03 PM PDT             6.8            585         -      Not Applicable
  04/02/2023 04 PM PDT             6.8            582         -      Not Applicable
  04/02/2023 05 PM PDT             6.8            579         -      Not Applicable
  04/02/2023 06 PM PDT             6.8            576         -      Not Applicable
  04/02/2023 07 PM PDT             6.7            570         -      Not Applicable
  04/02/2023 08 PM PDT             6.7            567         -      Not Applicable
  04/02/2023 09 PM PDT             6.7            567         0      Not Applicable
  04/02/2023 10 PM PDT             6.7            564         -      Not Applicable
  04/02/2023 11 PM PDT             6.7            567         +      Not Applicable
  04/03/2023 12 AM PDT             6.7            570         +      Not Applicable
  04/03/2023 01 AM PDT             6.7            573         +      Not Applicable
  04/03/2023 02 AM PDT             6.8            579         +      Not Applicable
  04/03/2023 03 AM PDT             6.8            582         +      Not Applicable
  04/03/2023 04 AM PDT             6.8            588         +      Not Applicable
  04/03/2023 05 AM PDT             6.8            600         +      Not Applicable
  04/03/2023 06 AM PDT             6.9            622         +      Not Applicable
  04/03/2023 07 AM PDT             6.9            634         +      Not Applicable
  04/03/2023 08 AM PDT             7.0            640         +      Not Applicable
  04/03/2023 09 AM PDT             7.0            647         +      Not Applicable
  04/03/2023 10 AM PDT             7.0            644         -      Not Applicable
  04/03/2023 11 AM PDT             7.0            640         -      Not Applicable
  04/03/2023 12 PM PDT             6.9            628         -      Not Applicable
  04/03/2023 01 PM PDT             6.9            622         -      Not Applicable
  04/03/2023 02 PM PDT             6.9            612         -      Not Applicable
  04/03/2023 03 PM PDT             6.8            606         -      Not Applicable
  04/03/2023 04 PM PDT             6.8            600         -      Not Applicable
  04/03/2023 05 PM PDT             6.8            591         -      Not Applicable
  04/03/2023 06 PM PDT             6.8            585         -      Not Applicable
  04/03/2023 07 PM PDT             6.8            582         -      Not Applicable
  04/03/2023 08 PM PDT             6.8            579         -      Not Applicable
  04/03/2023 09 PM PDT             6.7            573         -      Not Applicable
  04/03/2023 10 PM PDT             6.7            570         -      Not Applicable
  04/03/2023 11 PM PDT             6.7            567         -      Not Applicable
  04/04/2023 12 AM PDT             6.7            561         -      Not Applicable
  04/04/2023 01 AM PDT             6.7            558         -      Not Applicable
  04/04/2023 02 AM PDT             6.7            555         -      Not Applicable
  04/04/2023 03 AM PDT             6.7            549         -      Not Applicable
  04/04/2023 04 AM PDT             6.7            546         -      Not Applicable
  04/04/2023 05 AM PDT             6.6            543         -      Not Applicable
  04/04/2023 06 AM PDT             6.6            540         -      Not Applicable
  04/04/2023 07 AM PDT             6.6            537         -      Not Applicable
  04/04/2023 08 AM PDT             6.6            534         -      Not Applicable
  04/04/2023 09 AM PDT             6.6            531         -      Not Applicable
  04/04/2023 10 AM PDT             6.6            528         -      Not Applicable
  04/04/2023 11 AM PDT             6.6            528         0      Not Applicable
  04/04/2023 12 PM PDT             6.6            525         -      Not Applicable
  04/04/2023 01 PM PDT             6.6            523         -      Not Applicable
  04/04/2023 02 PM PDT             6.6            520         -      Not Applicable
  04/04/2023 03 PM PDT             6.6            520         0      Not Applicable
  04/04/2023 04 PM PDT             6.5            517         -      Not Applicable
  04/04/2023 05 PM PDT             6.5            514         -      Not Applicable
  04/04/2023 06 PM PDT             6.5            514         0      Not Applicable
  04/04/2023 07 PM PDT             6.5            511         -      Not Applicable
  04/04/2023 08 PM PDT             6.5            509         -      Not Applicable
  04/04/2023 09 PM PDT             6.5            509         0      Not Applicable
  04/04/2023 10 PM PDT             6.5            506         -      Not Applicable
  04/04/2023 11 PM PDT             6.5            503         -      Not Applicable
  04/05/2023 12 AM PDT             6.5            503         0      Not Applicable
  04/05/2023 01 AM PDT             6.5            500         -      Not Applicable
  04/05/2023 02 AM PDT             6.5            500         0      Not Applicable
  04/05/2023 03 AM PDT             6.5            497         -      Not Applicable
  04/05/2023 04 AM PDT             6.5            497         0      Not Applicable
  04/05/2023 05 AM PDT             6.5            495         -      Not Applicable
#
# NOTE 1: Stages are rounded to the nearest tenth (.1) 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.