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: Mar 14 2026 at 8:56 AM PDTNext Issuance: Mar 15 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:  03/14/2026 at 08:58 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  03/09/2026 at 08:00 AM PDT
# Maximum Observed Stage:                       5.89 Feet
# Maximum Observed Flow:                        278 cfs
#
# Earliest Date & Time of Maximum Forecast:     03/19/2026 at 04:00 AM PDT
# Maximum Forecast Stage:                       6.28 Feet
# Maximum Forecast Flow:                        374 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  03/09/2026 08 AM PDT            5.89            278                Not Applicable
  03/09/2026 09 AM PDT            5.87            273         -      Not Applicable
  03/09/2026 10 AM PDT            5.88            275         +      Not Applicable
  03/09/2026 11 AM PDT            5.85            268         -      Not Applicable
  03/09/2026 12 PM PDT            5.86            271         +      Not Applicable
  03/09/2026 01 PM PDT            5.84            266         -      Not Applicable
  03/09/2026 02 PM PDT            5.85            268         +      Not Applicable
  03/09/2026 03 PM PDT            5.84            266         -      Not Applicable
  03/09/2026 04 PM PDT            5.82            261         -      Not Applicable
  03/09/2026 05 PM PDT            5.81            259         -      Not Applicable
  03/09/2026 06 PM PDT            5.80            257         -      Not Applicable
  03/09/2026 07 PM PDT            5.81            259         +      Not Applicable
  03/09/2026 08 PM PDT            5.79            255         -      Not Applicable
  03/09/2026 09 PM PDT            5.78            253         -      Not Applicable
  03/09/2026 10 PM PDT            5.78            253         0      Not Applicable
  03/09/2026 11 PM PDT            5.76            248         -      Not Applicable
  03/10/2026 12 AM PDT            5.78            253         +      Not Applicable
  03/10/2026 01 AM PDT            5.80            257         +      Not Applicable
  03/10/2026 02 AM PDT            5.79            255         -      Not Applicable
  03/10/2026 03 AM PDT            5.81            259         +      Not Applicable
  03/10/2026 04 AM PDT            5.82            261         +      Not Applicable
  03/10/2026 05 AM PDT            5.80            257         -      Not Applicable
  03/10/2026 06 AM PDT            5.82            261         +      Not Applicable
  03/10/2026 07 AM PDT            5.83            264         +      Not Applicable
  03/10/2026 08 AM PDT            5.83            264         0      Not Applicable
  03/10/2026 09 AM PDT            5.83            264         0      Not Applicable
  03/10/2026 10 AM PDT            5.79            255         -      Not Applicable
  03/10/2026 11 AM PDT            5.80            257         +      Not Applicable
  03/10/2026 12 PM PDT            5.80            257         0      Not Applicable
  03/10/2026 01 PM PDT            5.78            253         -      Not Applicable
  03/10/2026 02 PM PDT            5.79            255         +      Not Applicable
  03/10/2026 03 PM PDT            5.76            248         -      Not Applicable
  03/10/2026 04 PM PDT            5.78            253         +      Not Applicable
  03/10/2026 05 PM PDT            5.74            244         -      Not Applicable
  03/10/2026 06 PM PDT            5.76            248         +      Not Applicable
  03/10/2026 07 PM PDT            5.75            246         -      Not Applicable
  03/10/2026 08 PM PDT            5.74            244         -      Not Applicable
  03/10/2026 09 PM PDT            5.75            246         +      Not Applicable
  03/10/2026 10 PM PDT            5.75            246         0      Not Applicable
  03/10/2026 11 PM PDT            5.72            240         -      Not Applicable
  03/11/2026 12 AM PDT            5.71            238         -      Not Applicable
  03/11/2026 01 AM PDT            5.73            242         +      Not Applicable
  03/11/2026 02 AM PDT            5.73            242         0      Not Applicable
  03/11/2026 03 AM PDT            5.75            246         +      Not Applicable
  03/11/2026 04 AM PDT            5.72            240         -      Not Applicable
  03/11/2026 05 AM PDT            5.74            244         +      Not Applicable
  03/11/2026 06 AM PDT            5.73            242         -      Not Applicable
  03/11/2026 07 AM PDT            5.76            248         +      Not Applicable
  03/11/2026 08 AM PDT            5.72            240         -      Not Applicable
  03/11/2026 09 AM PDT            5.73            242         +      Not Applicable
  03/11/2026 10 AM PDT            5.74            244         +      Not Applicable
  03/11/2026 11 AM PDT            5.74            244         0      Not Applicable
  03/11/2026 12 PM PDT            5.74            244         0      Not Applicable
  03/11/2026 01 PM PDT            5.71            238         -      Not Applicable
  03/11/2026 02 PM PDT            5.71            238         0      Not Applicable
  03/11/2026 03 PM PDT            5.68            232         -      Not Applicable
  03/11/2026 04 PM PDT            5.69            234         +      Not Applicable
  03/11/2026 05 PM PDT            5.70            236         +      Not Applicable
  03/11/2026 06 PM PDT            5.67            230         -      Not Applicable
  03/11/2026 07 PM PDT            5.69            234         +      Not Applicable
  03/11/2026 08 PM PDT            5.67            230         -      Not Applicable
  03/11/2026 09 PM PDT            5.64            224         -      Not Applicable
  03/11/2026 10 PM PDT            5.63            222         -      Not Applicable
  03/11/2026 11 PM PDT            5.63            222         0      Not Applicable
  03/12/2026 12 AM PDT            5.65            226         +      Not Applicable
  03/12/2026 01 AM PDT            5.65            226         0      Not Applicable
  03/12/2026 02 AM PDT            5.63            222         -      Not Applicable
  03/12/2026 03 AM PDT            5.65            226         +      Not Applicable
  03/12/2026 04 AM PDT            5.65            226         0      Not Applicable
  03/12/2026 05 AM PDT            5.64            224         -      Not Applicable
  03/12/2026 06 AM PDT            5.65            226         +      Not Applicable
  03/12/2026 07 AM PDT            5.69            234         +      Not Applicable
  03/12/2026 08 AM PDT            5.66            228         -      Not Applicable
  03/12/2026 09 AM PDT            5.64            224         -      Not Applicable
  03/12/2026 10 AM PDT            5.65            226         +      Not Applicable
  03/12/2026 11 AM PDT            5.66            228         +      Not Applicable
  03/12/2026 12 PM PDT            5.66            228         0      Not Applicable
  03/12/2026 01 PM PDT            5.65            226         -      Not Applicable
  03/12/2026 02 PM PDT            5.65            226         0      Not Applicable
  03/12/2026 03 PM PDT            5.64            224         -      Not Applicable
  03/12/2026 04 PM PDT            5.64            224         0      Not Applicable
  03/12/2026 05 PM PDT            5.62            220         -      Not Applicable
  03/12/2026 06 PM PDT            5.60            216         -      Not Applicable
  03/12/2026 07 PM PDT            5.64            224         +      Not Applicable
  03/12/2026 08 PM PDT            5.61            218         -      Not Applicable
  03/12/2026 09 PM PDT            5.58            212         -      Not Applicable
  03/12/2026 10 PM PDT            5.58            212         0      Not Applicable
  03/12/2026 11 PM PDT            5.59            214         +      Not Applicable
  03/13/2026 12 AM PDT            5.60            216         +      Not Applicable
  03/13/2026 01 AM PDT            5.60            216         0      Not Applicable
  03/13/2026 02 AM PDT            5.60            216         0      Not Applicable
  03/13/2026 03 AM PDT            5.61            218         +      Not Applicable
  03/13/2026 04 AM PDT            5.64            224         +      Not Applicable
  03/13/2026 05 AM PDT            5.64            224         0      Not Applicable
  03/13/2026 06 AM PDT            5.63            222         -      Not Applicable
  03/13/2026 07 AM PDT            5.66            228         +      Not Applicable
  03/13/2026 08 AM PDT            5.62            220         -      Not Applicable
  03/13/2026 09 AM PDT            5.64            224         +      Not Applicable
  03/13/2026 10 AM PDT            5.63            222         -      Not Applicable
  03/13/2026 11 AM PDT            5.62            220         -      Not Applicable
  03/13/2026 12 PM PDT            5.62            220         0      Not Applicable
  03/13/2026 01 PM PDT            5.61            218         -      Not Applicable
  03/13/2026 02 PM PDT            5.60            216         -      Not Applicable
  03/13/2026 03 PM PDT            5.61            218         +      Not Applicable
  03/13/2026 04 PM PDT            5.58            212         -      Not Applicable
  03/13/2026 05 PM PDT            5.56            208         -      Not Applicable
  03/13/2026 06 PM PDT            5.59            214         +      Not Applicable
  03/13/2026 07 PM PDT            5.57            210         -      Not Applicable
  03/13/2026 08 PM PDT            5.55            206         -      Not Applicable
  03/13/2026 09 PM PDT            5.57            210         +      Not Applicable
  03/13/2026 10 PM PDT            5.56            208         -      Not Applicable
  03/13/2026 11 PM PDT            5.55            206         -      Not Applicable
  03/14/2026 12 AM PDT            5.52            201         -      Not Applicable
  03/14/2026 01 AM PDT            5.53            203         +      Not Applicable
  03/14/2026 02 AM PDT            5.56            208         +      Not Applicable
  03/14/2026 03 AM PDT            5.56            208         0      Not Applicable
  03/14/2026 04 AM PDT            5.56            208         0      Not Applicable
  03/14/2026 05 AM PDT            5.56            208         0      Not Applicable
  03/14/2026 06 AM PDT            5.55            206         -      Not Applicable
  03/14/2026 07 AM PDT            5.55            206         0      Not Applicable
  03/14/2026 08 AM PDT            5.55            206         0      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  03/14/2026 09 AM PDT            5.55            206                Not Applicable
  03/14/2026 10 AM PDT            5.55            206         0      Not Applicable
  03/14/2026 11 AM PDT            5.54            204         -      Not Applicable
  03/14/2026 12 PM PDT            5.54            204         0      Not Applicable
  03/14/2026 01 PM PDT            5.54            204         0      Not Applicable
  03/14/2026 02 PM PDT            5.54            204         0      Not Applicable
  03/14/2026 03 PM PDT            5.54            204         0      Not Applicable
  03/14/2026 04 PM PDT            5.54            204         0      Not Applicable
  03/14/2026 05 PM PDT            5.54            204         0      Not Applicable
  03/14/2026 06 PM PDT            5.54            204         0      Not Applicable
  03/14/2026 07 PM PDT            5.54            204         0      Not Applicable
  03/14/2026 08 PM PDT            5.54            204         0      Not Applicable
  03/14/2026 09 PM PDT            5.54            204         0      Not Applicable
  03/14/2026 10 PM PDT            5.54            204         0      Not Applicable
  03/14/2026 11 PM PDT            5.55            206         +      Not Applicable
  03/15/2026 12 AM PDT            5.55            206         0      Not Applicable
  03/15/2026 01 AM PDT            5.56            208         +      Not Applicable
  03/15/2026 02 AM PDT            5.57            210         +      Not Applicable
  03/15/2026 03 AM PDT            5.57            210         0      Not Applicable
  03/15/2026 04 AM PDT            5.58            212         +      Not Applicable
  03/15/2026 05 AM PDT            5.58            212         0      Not Applicable
  03/15/2026 06 AM PDT            5.59            214         +      Not Applicable
  03/15/2026 07 AM PDT            5.59            214         0      Not Applicable
  03/15/2026 08 AM PDT            5.60            216         +      Not Applicable
  03/15/2026 09 AM PDT            5.60            216         0      Not Applicable
  03/15/2026 10 AM PDT            5.61            218         +      Not Applicable
  03/15/2026 11 AM PDT            5.61            218         0      Not Applicable
  03/15/2026 12 PM PDT            5.61            218         0      Not Applicable
  03/15/2026 01 PM PDT            5.62            220         +      Not Applicable
  03/15/2026 02 PM PDT            5.62            220         0      Not Applicable
  03/15/2026 03 PM PDT            5.62            220         0      Not Applicable
  03/15/2026 04 PM PDT            5.63            222         +      Not Applicable
  03/15/2026 05 PM PDT            5.63            222         0      Not Applicable
  03/15/2026 06 PM PDT            5.64            224         +      Not Applicable
  03/15/2026 07 PM PDT            5.64            224         0      Not Applicable
  03/15/2026 08 PM PDT            5.65            226         +      Not Applicable
  03/15/2026 09 PM PDT            5.66            228         +      Not Applicable
  03/15/2026 10 PM PDT            5.66            228         0      Not Applicable
  03/15/2026 11 PM PDT            5.67            230         +      Not Applicable
  03/16/2026 12 AM PDT            5.69            234         +      Not Applicable
  03/16/2026 01 AM PDT            5.71            238         +      Not Applicable
  03/16/2026 02 AM PDT            5.72            240         +      Not Applicable
  03/16/2026 03 AM PDT            5.73            242         +      Not Applicable
  03/16/2026 04 AM PDT            5.75            246         +      Not Applicable
  03/16/2026 05 AM PDT            5.76            248         +      Not Applicable
  03/16/2026 06 AM PDT            5.77            251         +      Not Applicable
  03/16/2026 07 AM PDT            5.78            253         +      Not Applicable
  03/16/2026 08 AM PDT            5.79            255         +      Not Applicable
  03/16/2026 09 AM PDT            5.80            257         +      Not Applicable
  03/16/2026 10 AM PDT            5.81            259         +      Not Applicable
  03/16/2026 11 AM PDT            5.82            261         +      Not Applicable
  03/16/2026 12 PM PDT            5.83            264         +      Not Applicable
  03/16/2026 01 PM PDT            5.83            264         0      Not Applicable
  03/16/2026 02 PM PDT            5.84            266         +      Not Applicable
  03/16/2026 03 PM PDT            5.84            266         0      Not Applicable
  03/16/2026 04 PM PDT            5.85            268         +      Not Applicable
  03/16/2026 05 PM PDT            5.86            271         +      Not Applicable
  03/16/2026 06 PM PDT            5.87            273         +      Not Applicable
  03/16/2026 07 PM PDT            5.88            275         +      Not Applicable
  03/16/2026 08 PM PDT            5.89            278         +      Not Applicable
  03/16/2026 09 PM PDT            5.90            280         +      Not Applicable
  03/16/2026 10 PM PDT            5.91            282         +      Not Applicable
  03/16/2026 11 PM PDT            5.92            284         +      Not Applicable
  03/17/2026 12 AM PDT            5.93            287         +      Not Applicable
  03/17/2026 01 AM PDT            5.95            291         +      Not Applicable
  03/17/2026 02 AM PDT            5.96            294         +      Not Applicable
  03/17/2026 03 AM PDT            5.97            296         +      Not Applicable
  03/17/2026 04 AM PDT            5.98            298         +      Not Applicable
  03/17/2026 05 AM PDT            5.99            301         +      Not Applicable
  03/17/2026 06 AM PDT            6.00            303         +      Not Applicable
  03/17/2026 07 AM PDT            6.01            305         +      Not Applicable
  03/17/2026 08 AM PDT            6.02            308         +      Not Applicable
  03/17/2026 09 AM PDT            6.03            310         +      Not Applicable
  03/17/2026 10 AM PDT            6.03            310         0      Not Applicable
  03/17/2026 11 AM PDT            6.04            313         +      Not Applicable
  03/17/2026 12 PM PDT            6.04            313         0      Not Applicable
  03/17/2026 01 PM PDT            6.05            315         +      Not Applicable
  03/17/2026 02 PM PDT            6.05            315         0      Not Applicable
  03/17/2026 03 PM PDT            6.06            318         +      Not Applicable
  03/17/2026 04 PM PDT            6.06            318         0      Not Applicable
  03/17/2026 05 PM PDT            6.07            320         +      Not Applicable
  03/17/2026 06 PM PDT            6.07            320         0      Not Applicable
  03/17/2026 07 PM PDT            6.08            323         +      Not Applicable
  03/17/2026 08 PM PDT            6.09            325         +      Not Applicable
  03/17/2026 09 PM PDT            6.09            325         0      Not Applicable
  03/17/2026 10 PM PDT            6.10            328         +      Not Applicable
  03/17/2026 11 PM PDT            6.11            330         +      Not Applicable
  03/18/2026 12 AM PDT            6.12            333         +      Not Applicable
  03/18/2026 01 AM PDT            6.13            335         +      Not Applicable
  03/18/2026 02 AM PDT            6.14            338         +      Not Applicable
  03/18/2026 03 AM PDT            6.16            343         +      Not Applicable
  03/18/2026 04 AM PDT            6.16            343         0      Not Applicable
  03/18/2026 05 AM PDT            6.17            345         +      Not Applicable
  03/18/2026 06 AM PDT            6.18            348         +      Not Applicable
  03/18/2026 07 AM PDT            6.18            348         0      Not Applicable
  03/18/2026 08 AM PDT            6.19            350         +      Not Applicable
  03/18/2026 09 AM PDT            6.19            350         0      Not Applicable
  03/18/2026 10 AM PDT            6.20            353         +      Not Applicable
  03/18/2026 11 AM PDT            6.20            353         0      Not Applicable
  03/18/2026 12 PM PDT            6.20            353         0      Not Applicable
  03/18/2026 01 PM PDT            6.20            353         0      Not Applicable
  03/18/2026 02 PM PDT            6.21            356         +      Not Applicable
  03/18/2026 03 PM PDT            6.21            356         0      Not Applicable
  03/18/2026 04 PM PDT            6.21            356         0      Not Applicable
  03/18/2026 05 PM PDT            6.21            356         0      Not Applicable
  03/18/2026 06 PM PDT            6.21            356         0      Not Applicable
  03/18/2026 07 PM PDT            6.22            358         +      Not Applicable
  03/18/2026 08 PM PDT            6.22            358         0      Not Applicable
  03/18/2026 09 PM PDT            6.23            361         +      Not Applicable
  03/18/2026 10 PM PDT            6.23            361         0      Not Applicable
  03/18/2026 11 PM PDT            6.24            364         +      Not Applicable
  03/19/2026 12 AM PDT            6.25            366         +      Not Applicable
  03/19/2026 01 AM PDT            6.26            369         +      Not Applicable
  03/19/2026 02 AM PDT            6.26            369         0      Not Applicable
  03/19/2026 03 AM PDT            6.27            372         +      Not Applicable
  03/19/2026 04 AM PDT            6.28            374         +      Not Applicable
  03/19/2026 05 AM PDT            6.28            374         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.