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: Apr 11 2026 at 8:24 AM PDTNext Issuance: Apr 12 2026 at 9:00 AM PDT
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:  04/11/2026 at 08:26 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  04/11/2026 at 08:00 AM PDT
# Maximum Observed Stage:                       6.07 Feet
# Maximum Observed Flow:                        320 cfs
#
# Earliest Date & Time of Maximum Forecast:     04/12/2026 at 10:00 AM PDT
# Maximum Forecast Stage:                       7.24 Feet
# Maximum Forecast Flow:                        694 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  04/06/2026 08 AM PDT            5.34            169                Not Applicable
  04/06/2026 09 AM PDT            5.34            169         0      Not Applicable
  04/06/2026 10 AM PDT            5.35            170         +      Not Applicable
  04/06/2026 11 AM PDT            5.34            169         -      Not Applicable
  04/06/2026 12 PM PDT            5.33            167         -      Not Applicable
  04/06/2026 01 PM PDT            5.35            170         +      Not Applicable
  04/06/2026 02 PM PDT            5.33            167         -      Not Applicable
  04/06/2026 03 PM PDT            5.33            167         0      Not Applicable
  04/06/2026 04 PM PDT            5.34            169         +      Not Applicable
  04/06/2026 05 PM PDT            5.33            167         -      Not Applicable
  04/06/2026 06 PM PDT            5.32            165         -      Not Applicable
  04/06/2026 07 PM PDT            5.31            164         -      Not Applicable
  04/06/2026 08 PM PDT            5.32            165         +      Not Applicable
  04/06/2026 09 PM PDT            5.31            164         -      Not Applicable
  04/06/2026 10 PM PDT            5.29            160         -      Not Applicable
  04/06/2026 11 PM PDT            5.28            159         -      Not Applicable
  04/07/2026 12 AM PDT            5.26            155         -      Not Applicable
  04/07/2026 01 AM PDT            5.26            155         0      Not Applicable
  04/07/2026 02 AM PDT            5.26            155         0      Not Applicable
  04/07/2026 03 AM PDT            5.25            154         -      Not Applicable
  04/07/2026 04 AM PDT            5.25            154         0      Not Applicable
  04/07/2026 05 AM PDT            5.25            154         0      Not Applicable
  04/07/2026 06 AM PDT            5.26            155         +      Not Applicable
  04/07/2026 07 AM PDT            5.26            155         0      Not Applicable
  04/07/2026 08 AM PDT            5.26            155         0      Not Applicable
  04/07/2026 09 AM PDT            5.26            155         0      Not Applicable
  04/07/2026 10 AM PDT            5.25            154         -      Not Applicable
  04/07/2026 11 AM PDT            5.25            154         0      Not Applicable
  04/07/2026 12 PM PDT            5.25            154         0      Not Applicable
  04/07/2026 01 PM PDT            5.25            154         0      Not Applicable
  04/07/2026 02 PM PDT            5.25            154         0      Not Applicable
  04/07/2026 03 PM PDT            5.25            154         0      Not Applicable
  04/07/2026 04 PM PDT            5.25            154         0      Not Applicable
  04/07/2026 05 PM PDT            5.24            152         -      Not Applicable
  04/07/2026 06 PM PDT            5.24            152         0      Not Applicable
  04/07/2026 07 PM PDT            5.23            151         -      Not Applicable
  04/07/2026 08 PM PDT            5.23            151         0      Not Applicable
  04/07/2026 09 PM PDT            5.22            149         -      Not Applicable
  04/07/2026 10 PM PDT            5.22            149         0      Not Applicable
  04/07/2026 11 PM PDT            5.21            148         -      Not Applicable
  04/08/2026 12 AM PDT            5.21            148         0      Not Applicable
  04/08/2026 01 AM PDT            5.20            146         -      Not Applicable
  04/08/2026 02 AM PDT            5.18            143         -      Not Applicable
  04/08/2026 03 AM PDT            5.17            141         -      Not Applicable
  04/08/2026 04 AM PDT            5.17            141         0      Not Applicable
  04/08/2026 05 AM PDT            5.18            143         +      Not Applicable
  04/08/2026 06 AM PDT            5.17            141         -      Not Applicable
  04/08/2026 07 AM PDT            5.19            144         +      Not Applicable
  04/08/2026 08 AM PDT            5.18            143         -      Not Applicable
  04/08/2026 09 AM PDT            5.19            144         +      Not Applicable
  04/08/2026 10 AM PDT            5.19            144         0      Not Applicable
  04/08/2026 11 AM PDT            5.16            140         -      Not Applicable
  04/08/2026 12 PM PDT            5.18            143         +      Not Applicable
  04/08/2026 01 PM PDT            5.19            144         +      Not Applicable
  04/08/2026 02 PM PDT            5.17            141         -      Not Applicable
  04/08/2026 03 PM PDT            5.17            141         0      Not Applicable
  04/08/2026 04 PM PDT            5.17            141         0      Not Applicable
  04/08/2026 05 PM PDT            5.17            141         0      Not Applicable
  04/08/2026 06 PM PDT            5.16            140         -      Not Applicable
  04/08/2026 07 PM PDT            5.16            140         0      Not Applicable
  04/08/2026 08 PM PDT            5.14            137         -      Not Applicable
  04/08/2026 09 PM PDT            5.14            137         0      Not Applicable
  04/08/2026 10 PM PDT            5.15            138         +      Not Applicable
  04/08/2026 11 PM PDT            5.13            135         -      Not Applicable
  04/09/2026 12 AM PDT            5.13            135         0      Not Applicable
  04/09/2026 01 AM PDT            5.12            134         -      Not Applicable
  04/09/2026 02 AM PDT            5.12            134         0      Not Applicable
  04/09/2026 03 AM PDT            5.11            132         -      Not Applicable
  04/09/2026 04 AM PDT            5.11            132         0      Not Applicable
  04/09/2026 05 AM PDT            5.12            134         +      Not Applicable
  04/09/2026 06 AM PDT            5.10            131         -      Not Applicable
  04/09/2026 07 AM PDT            5.10            131         0      Not Applicable
  04/09/2026 08 AM PDT            5.10            131         0      Not Applicable
  04/09/2026 09 AM PDT            5.11            132         +      Not Applicable
  04/09/2026 10 AM PDT            5.11            132         0      Not Applicable
  04/09/2026 11 AM PDT            5.11            132         0      Not Applicable
  04/09/2026 12 PM PDT            5.12            134         +      Not Applicable
  04/09/2026 01 PM PDT            5.11            132         -      Not Applicable
  04/09/2026 02 PM PDT            5.11            132         0      Not Applicable
  04/09/2026 03 PM PDT            5.10            131         -      Not Applicable
  04/09/2026 04 PM PDT            5.10            131         0      Not Applicable
  04/09/2026 05 PM PDT            5.10            131         0      Not Applicable
  04/09/2026 06 PM PDT            5.11            132         +      Not Applicable
  04/09/2026 07 PM PDT            5.09            130         -      Not Applicable
  04/09/2026 08 PM PDT            5.09            130         0      Not Applicable
  04/09/2026 09 PM PDT            5.10            131         +      Not Applicable
  04/09/2026 10 PM PDT            5.10            131         0      Not Applicable
  04/09/2026 11 PM PDT            5.09            130         -      Not Applicable
  04/10/2026 12 AM PDT            5.10            131         +      Not Applicable
  04/10/2026 01 AM PDT            5.07            127         -      Not Applicable
  04/10/2026 02 AM PDT            5.07            127         0      Not Applicable
  04/10/2026 03 AM PDT            5.06            125         -      Not Applicable
  04/10/2026 04 AM PDT            5.06            125         0      Not Applicable
  04/10/2026 05 AM PDT            5.06            125         0      Not Applicable
  04/10/2026 06 AM PDT            5.08            128         +      Not Applicable
  04/10/2026 07 AM PDT            5.09            130         +      Not Applicable
  04/10/2026 08 AM PDT            5.13            135         +      Not Applicable
  04/10/2026 09 AM PDT            5.15            138         +      Not Applicable
  04/10/2026 10 AM PDT            5.23            151         +      Not Applicable
  04/10/2026 11 AM PDT            5.20            146         -      Not Applicable
  04/10/2026 12 PM PDT            5.24            152         +      Not Applicable
  04/10/2026 01 PM PDT            5.22            149         -      Not Applicable
  04/10/2026 02 PM PDT            5.24            152         +      Not Applicable
  04/10/2026 03 PM PDT            5.23            151         -      Not Applicable
  04/10/2026 04 PM PDT            5.23            151         0      Not Applicable
  04/10/2026 05 PM PDT            5.27            157         +      Not Applicable
  04/10/2026 06 PM PDT            5.28            159         +      Not Applicable
  04/10/2026 07 PM PDT            5.27            157         -      Not Applicable
  04/10/2026 08 PM PDT            5.30            162         +      Not Applicable
  04/10/2026 09 PM PDT            5.36            172         +      Not Applicable
  04/10/2026 10 PM PDT            5.49            195         +      Not Applicable
  04/10/2026 11 PM PDT            5.70            236         +      Not Applicable
  04/11/2026 12 AM PDT            5.86            271         +      Not Applicable
  04/11/2026 01 AM PDT            5.91            282         +      Not Applicable
  04/11/2026 02 AM PDT            5.97            296         +      Not Applicable
  04/11/2026 03 AM PDT            5.99            301         +      Not Applicable
  04/11/2026 04 AM PDT            6.00            303         +      Not Applicable
  04/11/2026 05 AM PDT            6.05            315         +      Not Applicable
  04/11/2026 06 AM PDT            6.02            308         -      Not Applicable
  04/11/2026 07 AM PDT            6.05            315         +      Not Applicable
  04/11/2026 08 AM PDT            6.07            320         +      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  04/11/2026 09 AM PDT            6.09            325                Not Applicable
  04/11/2026 10 AM PDT            6.10            328         +      Not Applicable
  04/11/2026 11 AM PDT            6.11            330         +      Not Applicable
  04/11/2026 12 PM PDT            6.13            335         +      Not Applicable
  04/11/2026 01 PM PDT            6.14            338         +      Not Applicable
  04/11/2026 02 PM PDT            6.15            340         +      Not Applicable
  04/11/2026 03 PM PDT            6.16            343         +      Not Applicable
  04/11/2026 04 PM PDT            6.17            345         +      Not Applicable
  04/11/2026 05 PM PDT            6.19            350         +      Not Applicable
  04/11/2026 06 PM PDT            6.21            356         +      Not Applicable
  04/11/2026 07 PM PDT            6.23            361         +      Not Applicable
  04/11/2026 08 PM PDT            6.25            366         +      Not Applicable
  04/11/2026 09 PM PDT            6.28            374         +      Not Applicable
  04/11/2026 10 PM PDT            6.32            385         +      Not Applicable
  04/11/2026 11 PM PDT            6.40            408         +      Not Applicable
  04/12/2026 12 AM PDT            6.60            468         +      Not Applicable
  04/12/2026 01 AM PDT            6.74            513         +      Not Applicable
  04/12/2026 02 AM PDT            6.83            543         +      Not Applicable
  04/12/2026 03 AM PDT            6.89            564         +      Not Applicable
  04/12/2026 04 AM PDT            6.95            585         +      Not Applicable
  04/12/2026 05 AM PDT            7.02            610         +      Not Applicable
  04/12/2026 06 AM PDT            7.09            636         +      Not Applicable
  04/12/2026 07 AM PDT            7.15            659         +      Not Applicable
  04/12/2026 08 AM PDT            7.20            678         +      Not Applicable
  04/12/2026 09 AM PDT            7.22            686         +      Not Applicable
  04/12/2026 10 AM PDT            7.24            694         +      Not Applicable
  04/12/2026 11 AM PDT            7.23            690         -      Not Applicable
  04/12/2026 12 PM PDT            7.21            682         -      Not Applicable
  04/12/2026 01 PM PDT            7.18            670         -      Not Applicable
  04/12/2026 02 PM PDT            7.16            663         -      Not Applicable
  04/12/2026 03 PM PDT            7.14            655         -      Not Applicable
  04/12/2026 04 PM PDT            7.12            647         -      Not Applicable
  04/12/2026 05 PM PDT            7.11            644         -      Not Applicable
  04/12/2026 06 PM PDT            7.10            640         -      Not Applicable
  04/12/2026 07 PM PDT            7.08            632         -      Not Applicable
  04/12/2026 08 PM PDT            7.08            632         0      Not Applicable
  04/12/2026 09 PM PDT            7.07            629         -      Not Applicable
  04/12/2026 10 PM PDT            7.06            625         -      Not Applicable
  04/12/2026 11 PM PDT            7.05            621         -      Not Applicable
  04/13/2026 12 AM PDT            7.03            614         -      Not Applicable
  04/13/2026 01 AM PDT            7.02            610         -      Not Applicable
  04/13/2026 02 AM PDT            7.00            603         -      Not Applicable
  04/13/2026 03 AM PDT            6.99            599         -      Not Applicable
  04/13/2026 04 AM PDT            6.97            592         -      Not Applicable
  04/13/2026 05 AM PDT            6.93            578         -      Not Applicable
  04/13/2026 06 AM PDT            6.88            560         -      Not Applicable
  04/13/2026 07 AM PDT            6.84            546         -      Not Applicable
  04/13/2026 08 AM PDT            6.80            533         -      Not Applicable
  04/13/2026 09 AM PDT            6.77            523         -      Not Applicable
  04/13/2026 10 AM PDT            6.74            513         -      Not Applicable
  04/13/2026 11 AM PDT            6.70            500         -      Not Applicable
  04/13/2026 12 PM PDT            6.65            484         -      Not Applicable
  04/13/2026 01 PM PDT            6.61            471         -      Not Applicable
  04/13/2026 02 PM PDT            6.58            462         -      Not Applicable
  04/13/2026 03 PM PDT            6.56            455         -      Not Applicable
  04/13/2026 04 PM PDT            6.54            449         -      Not Applicable
  04/13/2026 05 PM PDT            6.53            446         -      Not Applicable
  04/13/2026 06 PM PDT            6.51            440         -      Not Applicable
  04/13/2026 07 PM PDT            6.49            434         -      Not Applicable
  04/13/2026 08 PM PDT            6.48            431         -      Not Applicable
  04/13/2026 09 PM PDT            6.47            428         -      Not Applicable
  04/13/2026 10 PM PDT            6.46            425         -      Not Applicable
  04/13/2026 11 PM PDT            6.45            422         -      Not Applicable
  04/14/2026 12 AM PDT            6.44            419         -      Not Applicable
  04/14/2026 01 AM PDT            6.43            417         -      Not Applicable
  04/14/2026 02 AM PDT            6.42            414         -      Not Applicable
  04/14/2026 03 AM PDT            6.42            414         0      Not Applicable
  04/14/2026 04 AM PDT            6.41            411         -      Not Applicable
  04/14/2026 05 AM PDT            6.39            405         -      Not Applicable
  04/14/2026 06 AM PDT            6.38            402         -      Not Applicable
  04/14/2026 07 AM PDT            6.37            399         -      Not Applicable
  04/14/2026 08 AM PDT            6.37            399         0      Not Applicable
  04/14/2026 09 AM PDT            6.36            397         -      Not Applicable
  04/14/2026 10 AM PDT            6.35            394         -      Not Applicable
  04/14/2026 11 AM PDT            6.34            391         -      Not Applicable
  04/14/2026 12 PM PDT            6.33            388         -      Not Applicable
  04/14/2026 01 PM PDT            6.33            388         0      Not Applicable
  04/14/2026 02 PM PDT            6.32            385         -      Not Applicable
  04/14/2026 03 PM PDT            6.31            383         -      Not Applicable
  04/14/2026 04 PM PDT            6.30            380         -      Not Applicable
  04/14/2026 05 PM PDT            6.30            380         0      Not Applicable
  04/14/2026 06 PM PDT            6.29            377         -      Not Applicable
  04/14/2026 07 PM PDT            6.29            377         0      Not Applicable
  04/14/2026 08 PM PDT            6.29            377         0      Not Applicable
  04/14/2026 09 PM PDT            6.29            377         0      Not Applicable
  04/14/2026 10 PM PDT            6.29            377         0      Not Applicable
  04/14/2026 11 PM PDT            6.30            380         +      Not Applicable
  04/15/2026 12 AM PDT            6.31            383         +      Not Applicable
  04/15/2026 01 AM PDT            6.32            385         +      Not Applicable
  04/15/2026 02 AM PDT            6.32            385         0      Not Applicable
  04/15/2026 03 AM PDT            6.33            388         +      Not Applicable
  04/15/2026 04 AM PDT            6.34            391         +      Not Applicable
  04/15/2026 05 AM PDT            6.34            391         0      Not Applicable
  04/15/2026 06 AM PDT            6.34            391         0      Not Applicable
  04/15/2026 07 AM PDT            6.34            391         0      Not Applicable
  04/15/2026 08 AM PDT            6.34            391         0      Not Applicable
  04/15/2026 09 AM PDT            6.34            391         0      Not Applicable
  04/15/2026 10 AM PDT            6.33            388         -      Not Applicable
  04/15/2026 11 AM PDT            6.33            388         0      Not Applicable
  04/15/2026 12 PM PDT            6.32            385         -      Not Applicable
  04/15/2026 01 PM PDT            6.31            383         -      Not Applicable
  04/15/2026 02 PM PDT            6.30            380         -      Not Applicable
  04/15/2026 03 PM PDT            6.30            380         0      Not Applicable
  04/15/2026 04 PM PDT            6.30            380         0      Not Applicable
  04/15/2026 05 PM PDT            6.30            380         0      Not Applicable
  04/15/2026 06 PM PDT            6.32            385         +      Not Applicable
  04/15/2026 07 PM PDT            6.33            388         +      Not Applicable
  04/15/2026 08 PM PDT            6.34            391         +      Not Applicable
  04/15/2026 09 PM PDT            6.35            394         +      Not Applicable
  04/15/2026 10 PM PDT            6.36            397         +      Not Applicable
  04/15/2026 11 PM PDT            6.38            402         +      Not Applicable
  04/16/2026 12 AM PDT            6.41            411         +      Not Applicable
  04/16/2026 01 AM PDT            6.42            414         +      Not Applicable
  04/16/2026 02 AM PDT            6.43            417         +      Not Applicable
  04/16/2026 03 AM PDT            6.44            419         +      Not Applicable
  04/16/2026 04 AM PDT            6.44            419         0      Not Applicable
  04/16/2026 05 AM PDT            6.44            419         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.