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: Feb 28 2026 at 8:35 AM PSTNext Issuance: Mar 01 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:  02/28/2026 at 08:38 AM PST
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  02/28/2026 at 04:00 AM PST
# Maximum Observed Stage:                       7.09 Feet
# Maximum Observed Flow:                        636 cfs
#
# Earliest Date & Time of Maximum Forecast:     03/02/2026 at 01:00 AM PST
# Maximum Forecast Stage:                       7.06 Feet
# Maximum Forecast Flow:                        625 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  02/23/2026 08 AM PST            4.96            112                Not Applicable
  02/23/2026 09 AM PST            4.96            112         0      Not Applicable
  02/23/2026 10 AM PST            4.95            110         -      Not Applicable
  02/23/2026 11 AM PST            4.94            109         -      Not Applicable
  02/23/2026 12 PM PST            4.94            109         0      Not Applicable
  02/23/2026 01 PM PST            4.93            108         -      Not Applicable
  02/23/2026 02 PM PST            4.92            106         -      Not Applicable
  02/23/2026 03 PM PST            4.91            105         -      Not Applicable
  02/23/2026 04 PM PST            4.90            104         -      Not Applicable
  02/23/2026 05 PM PST            4.90            104         0      Not Applicable
  02/23/2026 06 PM PST            4.90            104         0      Not Applicable
  02/23/2026 07 PM PST            4.91            105         +      Not Applicable
  02/23/2026 08 PM PST            4.92            106         +      Not Applicable
  02/23/2026 09 PM PST            4.93            108         +      Not Applicable
  02/23/2026 10 PM PST            4.93            108         0      Not Applicable
  02/23/2026 11 PM PST            4.94            109         +      Not Applicable
  02/24/2026 12 AM PST            4.95            110         +      Not Applicable
  02/24/2026 01 AM PST            4.96            112         +      Not Applicable
  02/24/2026 02 AM PST            4.96            112         0      Not Applicable
  02/24/2026 03 AM PST            4.97            113         +      Not Applicable
  02/24/2026 04 AM PST            4.98            114         +      Not Applicable
  02/24/2026 05 AM PST            4.99            116         +      Not Applicable
  02/24/2026 06 AM PST            5.00            117         +      Not Applicable
  02/24/2026 07 AM PST            5.00            117         0      Not Applicable
  02/24/2026 08 AM PST            5.00            117         0      Not Applicable
  02/24/2026 09 AM PST            5.01            118         +      Not Applicable
  02/24/2026 10 AM PST            5.04            122         +      Not Applicable
  02/24/2026 11 AM PST            5.04            122         0      Not Applicable
  02/24/2026 12 PM PST            5.05            124         +      Not Applicable
  02/24/2026 01 PM PST            5.07            127         +      Not Applicable
  02/24/2026 02 PM PST            5.07            127         0      Not Applicable
  02/24/2026 03 PM PST            5.09            130         +      Not Applicable
  02/24/2026 04 PM PST            5.11            132         +      Not Applicable
  02/24/2026 05 PM PST            5.11            132         0      Not Applicable
  02/24/2026 06 PM PST            5.12            134         +      Not Applicable
  02/24/2026 07 PM PST            5.14            137         +      Not Applicable
  02/24/2026 08 PM PST            5.14            137         0      Not Applicable
  02/24/2026 09 PM PST            5.16            140         +      Not Applicable
  02/24/2026 10 PM PST            5.19            144         +      Not Applicable
  02/24/2026 11 PM PST            5.22            149         +      Not Applicable
  02/25/2026 12 AM PST            5.27            157         +      Not Applicable
  02/25/2026 01 AM PST            5.30            162         +      Not Applicable
  02/25/2026 02 AM PST            5.36            172         +      Not Applicable
  02/25/2026 03 AM PST            5.39            177         +      Not Applicable
  02/25/2026 04 AM PST            5.43            184         +      Not Applicable
  02/25/2026 05 AM PST            5.47            191         +      Not Applicable
  02/25/2026 06 AM PST            5.53            203         +      Not Applicable
  02/25/2026 07 AM PST            5.56            208         +      Not Applicable
  02/25/2026 08 AM PST            5.63            222         +      Not Applicable
  02/25/2026 09 AM PST            5.68            232         +      Not Applicable
  02/25/2026 10 AM PST            5.77            251         +      Not Applicable
  02/25/2026 11 AM PST            5.86            271         +      Not Applicable
  02/25/2026 12 PM PST            5.99            301         +      Not Applicable
  02/25/2026 01 PM PST            6.10            328         +      Not Applicable
  02/25/2026 02 PM PST            6.23            361         +      Not Applicable
  02/25/2026 03 PM PST            6.28            374         +      Not Applicable
  02/25/2026 04 PM PST            6.44            419         +      Not Applicable
  02/25/2026 05 PM PST            6.47            428         +      Not Applicable
  02/25/2026 06 PM PST            6.43            417         -      Not Applicable
  02/25/2026 07 PM PST            6.40            408         -      Not Applicable
  02/25/2026 08 PM PST            6.40            408         0      Not Applicable
  02/25/2026 09 PM PST            6.41            411         +      Not Applicable
  02/25/2026 10 PM PST            6.42            414         +      Not Applicable
  02/25/2026 11 PM PST            6.39            405         -      Not Applicable
  02/26/2026 12 AM PST            6.43            417         +      Not Applicable
  02/26/2026 01 AM PST            6.41            411         -      Not Applicable
  02/26/2026 02 AM PST            6.43            417         +      Not Applicable
  02/26/2026 03 AM PST            6.43            417         0      Not Applicable
  02/26/2026 04 AM PST            6.41            411         -      Not Applicable
  02/26/2026 05 AM PST            6.41            411         0      Not Applicable
  02/26/2026 06 AM PST            6.42            414         +      Not Applicable
  02/26/2026 07 AM PST            6.40            408         -      Not Applicable
  02/26/2026 08 AM PST            6.36            397         -      Not Applicable
  02/26/2026 09 AM PST            6.39            405         +      Not Applicable
  02/26/2026 10 AM PST            6.39            405         0      Not Applicable
  02/26/2026 11 AM PST            6.39            405         0      Not Applicable
  02/26/2026 12 PM PST            6.34            391         -      Not Applicable
  02/26/2026 01 PM PST            6.37            399         +      Not Applicable
  02/26/2026 02 PM PST            6.35            394         -      Not Applicable
  02/26/2026 03 PM PST            6.37            399         +      Not Applicable
  02/26/2026 04 PM PST            6.35            394         -      Not Applicable
  02/26/2026 05 PM PST            6.36            397         +      Not Applicable
  02/26/2026 06 PM PST            6.38            402         +      Not Applicable
  02/26/2026 07 PM PST            6.44            419         +      Not Applicable
  02/26/2026 08 PM PST            6.45            422         +      Not Applicable
  02/26/2026 09 PM PST            6.48            431         +      Not Applicable
  02/26/2026 10 PM PST            6.53            446         +      Not Applicable
  02/26/2026 11 PM PST            6.61            471         +      Not Applicable
  02/27/2026 12 AM PST            6.66            487         +      Not Applicable
  02/27/2026 01 AM PST            6.70            500         +      Not Applicable
  02/27/2026 02 AM PST            6.71            503         +      Not Applicable
  02/27/2026 03 AM PST            6.68            493         -      Not Applicable
  02/27/2026 04 AM PST            6.72            506         +      Not Applicable
  02/27/2026 05 AM PST            6.70            500         -      Not Applicable
  02/27/2026 06 AM PST            6.69            497         -      Not Applicable
  02/27/2026 07 AM PST            6.72            506         +      Not Applicable
  02/27/2026 08 AM PST            6.71            503         -      Not Applicable
  02/27/2026 09 AM PST            6.68            493         -      Not Applicable
  02/27/2026 10 AM PST            6.64            481         -      Not Applicable
  02/27/2026 11 AM PST            6.61            471         -      Not Applicable
  02/27/2026 12 PM PST            6.65            484         +      Not Applicable
  02/27/2026 01 PM PST            6.67            490         +      Not Applicable
  02/27/2026 02 PM PST            6.64            481         -      Not Applicable
  02/27/2026 03 PM PST            6.64            481         0      Not Applicable
  02/27/2026 04 PM PST            6.66            487         +      Not Applicable
  02/27/2026 05 PM PST            6.67            490         +      Not Applicable
  02/27/2026 06 PM PST            6.71            503         +      Not Applicable
  02/27/2026 07 PM PST            6.82            540         +      Not Applicable
  02/27/2026 08 PM PST            6.77            523         -      Not Applicable
  02/27/2026 09 PM PST            6.87            557         +      Not Applicable
  02/27/2026 10 PM PST            6.87            557         0      Not Applicable
  02/27/2026 11 PM PST            7.03            614         +      Not Applicable
  02/28/2026 12 AM PST            7.00            603         -      Not Applicable
  02/28/2026 01 AM PST            7.09            636         +      Not Applicable
  02/28/2026 02 AM PST            7.06            625         -      Not Applicable
  02/28/2026 03 AM PST            7.08            632         +      Not Applicable
  02/28/2026 04 AM PST            7.09            636         +      Not Applicable
  02/28/2026 05 AM PST            7.04            618         -      Not Applicable
  02/28/2026 06 AM PST            6.99            599         -      Not Applicable
  02/28/2026 07 AM PST            6.94            581         -      Not Applicable
  02/28/2026 08 AM PST            6.93            578         -      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  02/28/2026 09 AM PST            6.92            574                Not Applicable
  02/28/2026 10 AM PST            6.92            574         0      Not Applicable
  02/28/2026 11 AM PST            6.91            571         -      Not Applicable
  02/28/2026 12 PM PST            6.91            571         0      Not Applicable
  02/28/2026 01 PM PST            6.91            571         0      Not Applicable
  02/28/2026 02 PM PST            6.91            571         0      Not Applicable
  02/28/2026 03 PM PST            6.91            571         0      Not Applicable
  02/28/2026 04 PM PST            6.92            574         +      Not Applicable
  02/28/2026 05 PM PST            6.93            578         +      Not Applicable
  02/28/2026 06 PM PST            6.94            581         +      Not Applicable
  02/28/2026 07 PM PST            6.95            585         +      Not Applicable
  02/28/2026 08 PM PST            6.96            588         +      Not Applicable
  02/28/2026 09 PM PST            6.96            588         0      Not Applicable
  02/28/2026 10 PM PST            6.97            592         +      Not Applicable
  02/28/2026 11 PM PST            6.98            596         +      Not Applicable
  03/01/2026 12 AM PST            6.99            599         +      Not Applicable
  03/01/2026 01 AM PST            7.00            603         +      Not Applicable
  03/01/2026 02 AM PST            7.00            603         0      Not Applicable
  03/01/2026 03 AM PST            7.00            603         0      Not Applicable
  03/01/2026 04 AM PST            7.00            603         0      Not Applicable
  03/01/2026 05 AM PST            7.00            603         0      Not Applicable
  03/01/2026 06 AM PST            7.00            603         0      Not Applicable
  03/01/2026 07 AM PST            7.00            603         0      Not Applicable
  03/01/2026 08 AM PST            7.00            603         0      Not Applicable
  03/01/2026 09 AM PST            7.00            603         0      Not Applicable
  03/01/2026 10 AM PST            7.01            607         +      Not Applicable
  03/01/2026 11 AM PST            7.02            610         +      Not Applicable
  03/01/2026 12 PM PST            7.03            614         +      Not Applicable
  03/01/2026 01 PM PST            7.04            618         +      Not Applicable
  03/01/2026 02 PM PST            7.04            618         0      Not Applicable
  03/01/2026 03 PM PST            7.04            618         0      Not Applicable
  03/01/2026 04 PM PST            7.05            621         +      Not Applicable
  03/01/2026 05 PM PST            7.05            621         0      Not Applicable
  03/01/2026 06 PM PST            7.05            621         0      Not Applicable
  03/01/2026 07 PM PST            7.05            621         0      Not Applicable
  03/01/2026 08 PM PST            7.05            621         0      Not Applicable
  03/01/2026 09 PM PST            7.05            621         0      Not Applicable
  03/01/2026 10 PM PST            7.05            621         0      Not Applicable
  03/01/2026 11 PM PST            7.05            621         0      Not Applicable
  03/02/2026 12 AM PST            7.05            621         0      Not Applicable
  03/02/2026 01 AM PST            7.06            625         +      Not Applicable
  03/02/2026 02 AM PST            7.06            625         0      Not Applicable
  03/02/2026 03 AM PST            7.06            625         0      Not Applicable
  03/02/2026 04 AM PST            7.05            621         -      Not Applicable
  03/02/2026 05 AM PST            7.05            621         0      Not Applicable
  03/02/2026 06 AM PST            7.04            618         -      Not Applicable
  03/02/2026 07 AM PST            7.04            618         0      Not Applicable
  03/02/2026 08 AM PST            7.03            614         -      Not Applicable
  03/02/2026 09 AM PST            7.03            614         0      Not Applicable
  03/02/2026 10 AM PST            7.02            610         -      Not Applicable
  03/02/2026 11 AM PST            7.00            603         -      Not Applicable
  03/02/2026 12 PM PST            6.99            599         -      Not Applicable
  03/02/2026 01 PM PST            6.98            596         -      Not Applicable
  03/02/2026 02 PM PST            6.97            592         -      Not Applicable
  03/02/2026 03 PM PST            6.96            588         -      Not Applicable
  03/02/2026 04 PM PST            6.95            585         -      Not Applicable
  03/02/2026 05 PM PST            6.93            578         -      Not Applicable
  03/02/2026 06 PM PST            6.92            574         -      Not Applicable
  03/02/2026 07 PM PST            6.91            571         -      Not Applicable
  03/02/2026 08 PM PST            6.90            567         -      Not Applicable
  03/02/2026 09 PM PST            6.89            564         -      Not Applicable
  03/02/2026 10 PM PST            6.88            560         -      Not Applicable
  03/02/2026 11 PM PST            6.86            553         -      Not Applicable
  03/03/2026 12 AM PST            6.85            550         -      Not Applicable
  03/03/2026 01 AM PST            6.84            546         -      Not Applicable
  03/03/2026 02 AM PST            6.83            543         -      Not Applicable
  03/03/2026 03 AM PST            6.82            540         -      Not Applicable
  03/03/2026 04 AM PST            6.81            536         -      Not Applicable
  03/03/2026 05 AM PST            6.79            530         -      Not Applicable
  03/03/2026 06 AM PST            6.78            526         -      Not Applicable
  03/03/2026 07 AM PST            6.77            523         -      Not Applicable
  03/03/2026 08 AM PST            6.76            520         -      Not Applicable
  03/03/2026 09 AM PST            6.75            516         -      Not Applicable
  03/03/2026 10 AM PST            6.74            513         -      Not Applicable
  03/03/2026 11 AM PST            6.72            506         -      Not Applicable
  03/03/2026 12 PM PST            6.71            503         -      Not Applicable
  03/03/2026 01 PM PST            6.70            500         -      Not Applicable
  03/03/2026 02 PM PST            6.69            497         -      Not Applicable
  03/03/2026 03 PM PST            6.68            493         -      Not Applicable
  03/03/2026 04 PM PST            6.67            490         -      Not Applicable
  03/03/2026 05 PM PST            6.66            487         -      Not Applicable
  03/03/2026 06 PM PST            6.64            481         -      Not Applicable
  03/03/2026 07 PM PST            6.63            477         -      Not Applicable
  03/03/2026 08 PM PST            6.63            477         0      Not Applicable
  03/03/2026 09 PM PST            6.62            474         -      Not Applicable
  03/03/2026 10 PM PST            6.62            474         0      Not Applicable
  03/03/2026 11 PM PST            6.61            471         -      Not Applicable
  03/04/2026 12 AM PST            6.60            468         -      Not Applicable
  03/04/2026 01 AM PST            6.60            468         0      Not Applicable
  03/04/2026 02 AM PST            6.60            468         0      Not Applicable
  03/04/2026 03 AM PST            6.59            465         -      Not Applicable
  03/04/2026 04 AM PST            6.58            462         -      Not Applicable
  03/04/2026 05 AM PST            6.57            459         -      Not Applicable
  03/04/2026 06 AM PST            6.57            459         0      Not Applicable
  03/04/2026 07 AM PST            6.56            455         -      Not Applicable
  03/04/2026 08 AM PST            6.55            452         -      Not Applicable
  03/04/2026 09 AM PST            6.55            452         0      Not Applicable
  03/04/2026 10 AM PST            6.54            449         -      Not Applicable
  03/04/2026 11 AM PST            6.52            443         -      Not Applicable
  03/04/2026 12 PM PST            6.51            440         -      Not Applicable
  03/04/2026 01 PM PST            6.50            437         -      Not Applicable
  03/04/2026 02 PM PST            6.50            437         0      Not Applicable
  03/04/2026 03 PM PST            6.49            434         -      Not Applicable
  03/04/2026 04 PM PST            6.48            431         -      Not Applicable
  03/04/2026 05 PM PST            6.47            428         -      Not Applicable
  03/04/2026 06 PM PST            6.46            425         -      Not Applicable
  03/04/2026 07 PM PST            6.45            422         -      Not Applicable
  03/04/2026 08 PM PST            6.45            422         0      Not Applicable
  03/04/2026 09 PM PST            6.44            419         -      Not Applicable
  03/04/2026 10 PM PST            6.43            417         -      Not Applicable
  03/04/2026 11 PM PST            6.42            414         -      Not Applicable
  03/05/2026 12 AM PST            6.42            414         0      Not Applicable
  03/05/2026 01 AM PST            6.41            411         -      Not Applicable
  03/05/2026 02 AM PST            6.40            408         -      Not Applicable
  03/05/2026 03 AM PST            6.40            408         0      Not Applicable
  03/05/2026 04 AM PST            6.39            405         -      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.