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 13 2026 at 1:40 PM PDTNext Issuance: Apr 14 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:  04/13/2026 at 01:43 PM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  04/13/2026 at 01:00 AM PDT
# Maximum Observed Stage:                       6.85 Feet
# Maximum Observed Flow:                        550 cfs
#
# Earliest Date & Time of Maximum Forecast:     04/13/2026 at 07:00 PM PDT
# Maximum Forecast Stage:                       6.37 Feet
# Maximum Forecast Flow:                        399 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  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            5.97            296         -      Not Applicable
  04/11/2026 08 AM PDT            5.94            289         -      Not Applicable
  04/11/2026 09 AM PDT            5.93            287         -      Not Applicable
  04/11/2026 10 AM PDT            5.90            280         -      Not Applicable
  04/11/2026 11 AM PDT            5.93            287         +      Not Applicable
  04/11/2026 12 PM PDT            5.97            296         +      Not Applicable
  04/11/2026 01 PM PDT            5.99            301         +      Not Applicable
  04/11/2026 02 PM PDT            5.98            298         -      Not Applicable
  04/11/2026 03 PM PDT            5.97            296         -      Not Applicable
  04/11/2026 04 PM PDT            5.97            296         0      Not Applicable
  04/11/2026 05 PM PDT            6.03            310         +      Not Applicable
  04/11/2026 06 PM PDT            5.99            301         -      Not Applicable
  04/11/2026 07 PM PDT            5.99            301         0      Not Applicable
  04/11/2026 08 PM PDT            6.02            308         +      Not Applicable
  04/11/2026 09 PM PDT            6.07            320         +      Not Applicable
  04/11/2026 10 PM PDT            6.21            356         +      Not Applicable
  04/11/2026 11 PM PDT            6.34            391         +      Not Applicable
  04/12/2026 12 AM PDT            6.52            443         +      Not Applicable
  04/12/2026 01 AM PDT            6.58            462         +      Not Applicable
  04/12/2026 02 AM PDT            6.64            481         +      Not Applicable
  04/12/2026 03 AM PDT            6.54            449         -      Not Applicable
  04/12/2026 04 AM PDT            6.54            449         0      Not Applicable
  04/12/2026 05 AM PDT            6.48            431         -      Not Applicable
  04/12/2026 06 AM PDT            6.44            419         -      Not Applicable
  04/12/2026 07 AM PDT            6.45            422         +      Not Applicable
  04/12/2026 08 AM PDT            6.37            399         -      Not Applicable
  04/12/2026 09 AM PDT            6.36            397         -      Not Applicable
  04/12/2026 10 AM PDT            6.33            388         -      Not Applicable
  04/12/2026 11 AM PDT            6.29            377         -      Not Applicable
  04/12/2026 12 PM PDT            6.26            369         -      Not Applicable
  04/12/2026 01 PM PDT            6.25            366         -      Not Applicable
  04/12/2026 02 PM PDT            6.27            372         +      Not Applicable
  04/12/2026 03 PM PDT            6.26            369         -      Not Applicable
  04/12/2026 04 PM PDT            6.30            380         +      Not Applicable
  04/12/2026 05 PM PDT            6.36            397         +      Not Applicable
  04/12/2026 06 PM PDT            6.54            449         +      Not Applicable
  04/12/2026 07 PM PDT            6.54            449         0      Not Applicable
  04/12/2026 08 PM PDT            6.60            468         +      Not Applicable
  04/12/2026 09 PM PDT            6.60            468         0      Not Applicable
  04/12/2026 10 PM PDT            6.62            474         +      Not Applicable
  04/12/2026 11 PM PDT            6.76            520         +      Not Applicable
  04/13/2026 12 AM PDT            6.78            526         +      Not Applicable
  04/13/2026 01 AM PDT            6.85            550         +      Not Applicable
  04/13/2026 02 AM PDT            6.83            543         -      Not Applicable
  04/13/2026 03 AM PDT            6.72            506         -      Not Applicable
  04/13/2026 04 AM PDT            6.64            481         -      Not Applicable
  04/13/2026 05 AM PDT            6.63            477         -      Not Applicable
  04/13/2026 06 AM PDT            6.55            452         -      Not Applicable
  04/13/2026 07 AM PDT            6.53            446         -      Not Applicable
  04/13/2026 08 AM PDT            6.47            428         -      Not Applicable
  04/13/2026 09 AM PDT            6.45            422         -      Not Applicable
  04/13/2026 10 AM PDT            6.38            402         -      Not Applicable
  04/13/2026 11 AM PDT            6.36            397         -      Not Applicable
  04/13/2026 12 PM PDT            6.33            388         -      Not Applicable
  04/13/2026 01 PM PDT            6.31            383         -      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  04/13/2026 02 PM PDT            6.30            380                Not Applicable
  04/13/2026 03 PM PDT            6.31            383         +      Not Applicable
  04/13/2026 04 PM PDT            6.32            385         +      Not Applicable
  04/13/2026 05 PM PDT            6.33            388         +      Not Applicable
  04/13/2026 06 PM PDT            6.34            391         +      Not Applicable
  04/13/2026 07 PM PDT            6.37            399         +      Not Applicable
  04/13/2026 08 PM PDT            6.37            399         0      Not Applicable
  04/13/2026 09 PM PDT            6.36            397         -      Not Applicable
  04/13/2026 10 PM PDT            6.36            397         0      Not Applicable
  04/13/2026 11 PM PDT            6.36            397         0      Not Applicable
  04/14/2026 12 AM PDT            6.36            397         0      Not Applicable
  04/14/2026 01 AM PDT            6.36            397         0      Not Applicable
  04/14/2026 02 AM PDT            6.36            397         0      Not Applicable
  04/14/2026 03 AM PDT            6.36            397         0      Not Applicable
  04/14/2026 04 AM PDT            6.35            394         -      Not Applicable
  04/14/2026 05 AM PDT            6.35            394         0      Not Applicable
  04/14/2026 06 AM PDT            6.34            391         -      Not Applicable
  04/14/2026 07 AM PDT            6.34            391         0      Not Applicable
  04/14/2026 08 AM PDT            6.33            388         -      Not Applicable
  04/14/2026 09 AM PDT            6.32            385         -      Not Applicable
  04/14/2026 10 AM PDT            6.32            385         0      Not Applicable
  04/14/2026 11 AM PDT            6.31            383         -      Not Applicable
  04/14/2026 12 PM PDT            6.30            380         -      Not Applicable
  04/14/2026 01 PM PDT            6.29            377         -      Not Applicable
  04/14/2026 02 PM PDT            6.28            374         -      Not Applicable
  04/14/2026 03 PM PDT            6.27            372         -      Not Applicable
  04/14/2026 04 PM PDT            6.26            369         -      Not Applicable
  04/14/2026 05 PM PDT            6.25            366         -      Not Applicable
  04/14/2026 06 PM PDT            6.25            366         0      Not Applicable
  04/14/2026 07 PM PDT            6.24            364         -      Not Applicable
  04/14/2026 08 PM PDT            6.24            364         0      Not Applicable
  04/14/2026 09 PM PDT            6.23            361         -      Not Applicable
  04/14/2026 10 PM PDT            6.23            361         0      Not Applicable
  04/14/2026 11 PM PDT            6.23            361         0      Not Applicable
  04/15/2026 12 AM PDT            6.23            361         0      Not Applicable
  04/15/2026 01 AM PDT            6.24            364         +      Not Applicable
  04/15/2026 02 AM PDT            6.24            364         0      Not Applicable
  04/15/2026 03 AM PDT            6.25            366         +      Not Applicable
  04/15/2026 04 AM PDT            6.25            366         0      Not Applicable
  04/15/2026 05 AM PDT            6.25            366         0      Not Applicable
  04/15/2026 06 AM PDT            6.25            366         0      Not Applicable
  04/15/2026 07 AM PDT            6.24            364         -      Not Applicable
  04/15/2026 08 AM PDT            6.24            364         0      Not Applicable
  04/15/2026 09 AM PDT            6.24            364         0      Not Applicable
  04/15/2026 10 AM PDT            6.23            361         -      Not Applicable
  04/15/2026 11 AM PDT            6.23            361         0      Not Applicable
  04/15/2026 12 PM PDT            6.22            358         -      Not Applicable
  04/15/2026 01 PM PDT            6.21            356         -      Not Applicable
  04/15/2026 02 PM PDT            6.20            353         -      Not Applicable
  04/15/2026 03 PM PDT            6.20            353         0      Not Applicable
  04/15/2026 04 PM PDT            6.19            350         -      Not Applicable
  04/15/2026 05 PM PDT            6.19            350         0      Not Applicable
  04/15/2026 06 PM PDT            6.19            350         0      Not Applicable
  04/15/2026 07 PM PDT            6.19            350         0      Not Applicable
  04/15/2026 08 PM PDT            6.19            350         0      Not Applicable
  04/15/2026 09 PM PDT            6.19            350         0      Not Applicable
  04/15/2026 10 PM PDT            6.19            350         0      Not Applicable
  04/15/2026 11 PM PDT            6.20            353         +      Not Applicable
  04/16/2026 12 AM PDT            6.20            353         0      Not Applicable
  04/16/2026 01 AM PDT            6.21            356         +      Not Applicable
  04/16/2026 02 AM PDT            6.21            356         0      Not Applicable
  04/16/2026 03 AM PDT            6.22            358         +      Not Applicable
  04/16/2026 04 AM PDT            6.22            358         0      Not Applicable
  04/16/2026 05 AM PDT            6.22            358         0      Not Applicable
  04/16/2026 06 AM PDT            6.23            361         +      Not Applicable
  04/16/2026 07 AM PDT            6.23            361         0      Not Applicable
  04/16/2026 08 AM PDT            6.22            358         -      Not Applicable
  04/16/2026 09 AM PDT            6.22            358         0      Not Applicable
  04/16/2026 10 AM PDT            6.22            358         0      Not Applicable
  04/16/2026 11 AM PDT            6.22            358         0      Not Applicable
  04/16/2026 12 PM PDT            6.21            356         -      Not Applicable
  04/16/2026 01 PM PDT            6.21            356         0      Not Applicable
  04/16/2026 02 PM PDT            6.21            356         0      Not Applicable
  04/16/2026 03 PM PDT            6.20            353         -      Not Applicable
  04/16/2026 04 PM PDT            6.20            353         0      Not Applicable
  04/16/2026 05 PM PDT            6.19            350         -      Not Applicable
  04/16/2026 06 PM PDT            6.19            350         0      Not Applicable
  04/16/2026 07 PM PDT            6.18            348         -      Not Applicable
  04/16/2026 08 PM PDT            6.18            348         0      Not Applicable
  04/16/2026 09 PM PDT            6.17            345         -      Not Applicable
  04/16/2026 10 PM PDT            6.17            345         0      Not Applicable
  04/16/2026 11 PM PDT            6.17            345         0      Not Applicable
  04/17/2026 12 AM PDT            6.17            345         0      Not Applicable
  04/17/2026 01 AM PDT            6.17            345         0      Not Applicable
  04/17/2026 02 AM PDT            6.17            345         0      Not Applicable
  04/17/2026 03 AM PDT            6.17            345         0      Not Applicable
  04/17/2026 04 AM PDT            6.17            345         0      Not Applicable
  04/17/2026 05 AM PDT            6.17            345         0      Not Applicable
  04/17/2026 06 AM PDT            6.16            343         -      Not Applicable
  04/17/2026 07 AM PDT            6.15            340         -      Not Applicable
  04/17/2026 08 AM PDT            6.15            340         0      Not Applicable
  04/17/2026 09 AM PDT            6.14            338         -      Not Applicable
  04/17/2026 10 AM PDT            6.13            335         -      Not Applicable
  04/17/2026 11 AM PDT            6.12            333         -      Not Applicable
  04/17/2026 12 PM PDT            6.11            330         -      Not Applicable
  04/17/2026 01 PM PDT            6.10            328         -      Not Applicable
  04/17/2026 02 PM PDT            6.10            328         0      Not Applicable
  04/17/2026 03 PM PDT            6.09            325         -      Not Applicable
  04/17/2026 04 PM PDT            6.08            323         -      Not Applicable
  04/17/2026 05 PM PDT            6.08            323         0      Not Applicable
  04/17/2026 06 PM PDT            6.08            323         0      Not Applicable
  04/17/2026 07 PM PDT            6.08            323         0      Not Applicable
  04/17/2026 08 PM PDT            6.07            320         -      Not Applicable
  04/17/2026 09 PM PDT            6.07            320         0      Not Applicable
  04/17/2026 10 PM PDT            6.08            323         +      Not Applicable
  04/17/2026 11 PM PDT            6.08            323         0      Not Applicable
  04/18/2026 12 AM PDT            6.08            323         0      Not Applicable
  04/18/2026 01 AM PDT            6.09            325         +      Not Applicable
  04/18/2026 02 AM PDT            6.10            328         +      Not Applicable
  04/18/2026 03 AM PDT            6.10            328         0      Not Applicable
  04/18/2026 04 AM PDT            6.11            330         +      Not Applicable
  04/18/2026 05 AM PDT            6.11            330         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.