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

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COSUMNES RIVER - MICHIGAN BAR (MHBC1)
Latitude: 38.50º NLongitude: 121.04º WElevation: 168 FeetForecast Type: Official Location
Location: Sacramento County in CaliforniaBulletin Group: San JoaquinRiver Group: North San Joaquin
Issuance Time: May 15 2026 at 7:53 AM PDTNext Issuance: May 16 2026 at 9:00 AM PDT
Action/Monitor: 7.0 FeetMinor Flood: 12.0 FeetModerate Flood: 16.0 FeetMajor Flood: 18.0 Feet


# Tabular Observed and Forecast Hydrograph Information
#
# Location: Cosumnes River - Michigan Bar (MHBC1)
#
# File Generation Time:  05/15/2026 at 07:55 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  05/10/2026 at 08:00 AM PDT
# Maximum Observed Stage:                       4.39 Feet
# Maximum Observed Flow:                        457 cfs
#
# Earliest Date & Time of Maximum Forecast:     05/15/2026 at 08:00 AM PDT
# Maximum Forecast Stage:                       4.05 Feet
# Maximum Forecast Flow:                        305 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  05/10/2026 07 AM PDT            4.39            457                        Normal
  05/10/2026 08 AM PDT            4.39            457         0              Normal
  05/10/2026 09 AM PDT            4.38            452         -              Normal
  05/10/2026 10 AM PDT            4.37            447         -              Normal
  05/10/2026 11 AM PDT            4.37            447         0              Normal
  05/10/2026 12 PM PDT            4.37            447         0              Normal
  05/10/2026 01 PM PDT            4.36            442         -              Normal
  05/10/2026 02 PM PDT            4.36            442         0              Normal
  05/10/2026 03 PM PDT            4.35            437         -              Normal
  05/10/2026 04 PM PDT            4.35            437         0              Normal
  05/10/2026 05 PM PDT            4.35            437         0              Normal
  05/10/2026 06 PM PDT            4.35            437         0              Normal
  05/10/2026 07 PM PDT            4.35            437         0              Normal
  05/10/2026 08 PM PDT            4.35            437         0              Normal
  05/10/2026 09 PM PDT            4.34            432         -              Normal
  05/10/2026 10 PM PDT            4.35            437         +              Normal
  05/10/2026 11 PM PDT            4.35            437         0              Normal
  05/11/2026 12 AM PDT            4.34            432         -              Normal
  05/11/2026 01 AM PDT            4.34            432         0              Normal
  05/11/2026 02 AM PDT            4.34            432         0              Normal
  05/11/2026 03 AM PDT            4.33            427         -              Normal
  05/11/2026 04 AM PDT            4.33            427         0              Normal
  05/11/2026 05 AM PDT            4.32            422         -              Normal
  05/11/2026 06 AM PDT            4.33            427         +              Normal
  05/11/2026 07 AM PDT            4.32            422         -              Normal
  05/11/2026 08 AM PDT            4.31            418         -              Normal
  05/11/2026 09 AM PDT            4.31            418         0              Normal
  05/11/2026 10 AM PDT            4.30            413         -              Normal
  05/11/2026 11 AM PDT            4.30            413         0              Normal
  05/11/2026 12 PM PDT            4.29            408         -              Normal
  05/11/2026 01 PM PDT            4.35            437         +              Normal
  05/11/2026 02 PM PDT            4.34            432         -              Normal
  05/11/2026 03 PM PDT            4.34            432         0              Normal
  05/11/2026 04 PM PDT            4.29            408         -              Normal
  05/11/2026 05 PM PDT            4.28            403         -              Normal
  05/11/2026 06 PM PDT            4.29            408         +              Normal
  05/11/2026 07 PM PDT            4.28            403         -              Normal
  05/11/2026 08 PM PDT            4.29            408         +              Normal
  05/11/2026 09 PM PDT            4.28            403         -              Normal
  05/11/2026 10 PM PDT            4.28            403         0              Normal
  05/11/2026 11 PM PDT            4.28            403         0              Normal
  05/12/2026 12 AM PDT            4.27            399         -              Normal
  05/12/2026 01 AM PDT            4.27            399         0              Normal
  05/12/2026 02 AM PDT            4.26            394         -              Normal
  05/12/2026 03 AM PDT            4.26            394         0              Normal
  05/12/2026 04 AM PDT            4.26            394         0              Normal
  05/12/2026 05 AM PDT            4.25            389         -              Normal
  05/12/2026 06 AM PDT            4.25            389         0              Normal
  05/12/2026 07 AM PDT            4.25            389         0              Normal
  05/12/2026 08 AM PDT            4.24            385         -              Normal
  05/12/2026 09 AM PDT            4.24            385         0              Normal
  05/12/2026 10 AM PDT            4.24            385         0              Normal
  05/12/2026 11 AM PDT            4.23            380         -              Normal
  05/12/2026 12 PM PDT            4.23            380         0              Normal
  05/12/2026 01 PM PDT            4.22            376         -              Normal
  05/12/2026 02 PM PDT            4.22            376         0              Normal
  05/12/2026 03 PM PDT            4.22            376         0              Normal
  05/12/2026 04 PM PDT            4.21            371         -              Normal
  05/12/2026 05 PM PDT            4.20            367         -              Normal
  05/12/2026 06 PM PDT            4.20            367         0              Normal
  05/12/2026 07 PM PDT            4.19            363         -              Normal
  05/12/2026 08 PM PDT            4.18            358         -              Normal
  05/12/2026 09 PM PDT            4.18            358         0              Normal
  05/12/2026 10 PM PDT            4.18            358         0              Normal
  05/12/2026 11 PM PDT            4.18            358         0              Normal
  05/13/2026 12 AM PDT            4.18            358         0              Normal
  05/13/2026 01 AM PDT            4.18            358         0              Normal
  05/13/2026 02 AM PDT            4.18            358         0              Normal
  05/13/2026 03 AM PDT            4.17            354         -              Normal
  05/13/2026 04 AM PDT            4.17            354         0              Normal
  05/13/2026 05 AM PDT            4.17            354         0              Normal
  05/13/2026 06 AM PDT            4.16            350         -              Normal
  05/13/2026 07 AM PDT            4.16            350         0              Normal
  05/13/2026 08 AM PDT            4.16            350         0              Normal
  05/13/2026 09 AM PDT            4.15            346         -              Normal
  05/13/2026 10 AM PDT            4.15            346         0              Normal
  05/13/2026 11 AM PDT            4.15            346         0              Normal
  05/13/2026 12 PM PDT            4.14            341         -              Normal
  05/13/2026 01 PM PDT            4.14            341         0              Normal
  05/13/2026 02 PM PDT            4.14            341         0              Normal
  05/13/2026 03 PM PDT            4.13            337         -              Normal
  05/13/2026 04 PM PDT            4.13            337         0              Normal
  05/13/2026 05 PM PDT            4.13            337         0              Normal
  05/13/2026 06 PM PDT            4.13            337         0              Normal
  05/13/2026 07 PM PDT            4.13            337         0              Normal
  05/13/2026 08 PM PDT            4.13            337         0              Normal
  05/13/2026 09 PM PDT            4.12            333         -              Normal
  05/13/2026 10 PM PDT            4.12            333         0              Normal
  05/13/2026 11 PM PDT            4.11            329         -              Normal
  05/14/2026 12 AM PDT            4.11            329         0              Normal
  05/14/2026 01 AM PDT            4.11            329         0              Normal
  05/14/2026 02 AM PDT            4.11            329         0              Normal
  05/14/2026 03 AM PDT            4.11            329         0              Normal
  05/14/2026 04 AM PDT            4.11            329         0              Normal
  05/14/2026 05 AM PDT            4.11            329         0              Normal
  05/14/2026 06 AM PDT            4.10            325         -              Normal
  05/14/2026 07 AM PDT            4.10            325         0              Normal
  05/14/2026 08 AM PDT            4.13            337         +              Normal
  05/14/2026 09 AM PDT            4.12            333         -              Normal
  05/14/2026 10 AM PDT            4.11            329         -              Normal
  05/14/2026 11 AM PDT            4.11            329         0              Normal
  05/14/2026 12 PM PDT            4.11            329         0              Normal
  05/14/2026 01 PM PDT            4.11            329         0              Normal
  05/14/2026 02 PM PDT            4.11            329         0              Normal
  05/14/2026 03 PM PDT            4.10            325         -              Normal
  05/14/2026 04 PM PDT            4.10            325         0              Normal
  05/14/2026 05 PM PDT            4.10            325         0              Normal
  05/14/2026 06 PM PDT            4.09            321         -              Normal
  05/14/2026 07 PM PDT            4.09            321         0              Normal
  05/14/2026 08 PM PDT            4.09            321         0              Normal
  05/14/2026 09 PM PDT            4.09            321         0              Normal
  05/14/2026 10 PM PDT            4.09            321         0              Normal
  05/14/2026 11 PM PDT            4.08            317         -              Normal
  05/15/2026 12 AM PDT            4.08            317         0              Normal
  05/15/2026 01 AM PDT            4.08            317         0              Normal
  05/15/2026 02 AM PDT            4.08            317         0              Normal
  05/15/2026 03 AM PDT            4.07            313         -              Normal
  05/15/2026 04 AM PDT            4.06            309         -              Normal
  05/15/2026 05 AM PDT            4.06            309         0              Normal
  05/15/2026 06 AM PDT            4.06            309         0              Normal
  05/15/2026 07 AM PDT            4.05            305         -              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  05/15/2026 08 AM PDT            4.05            305                        Normal
  05/15/2026 09 AM PDT            4.05            305         0              Normal
  05/15/2026 10 AM PDT            4.05            305         0              Normal
  05/15/2026 11 AM PDT            4.05            305         0              Normal
  05/15/2026 12 PM PDT            4.04            301         -              Normal
  05/15/2026 01 PM PDT            4.04            301         0              Normal
  05/15/2026 02 PM PDT            4.04            301         0              Normal
  05/15/2026 03 PM PDT            4.04            301         0              Normal
  05/15/2026 04 PM PDT            4.03            297         -              Normal
  05/15/2026 05 PM PDT            4.03            297         0              Normal
  05/15/2026 06 PM PDT            4.03            297         0              Normal
  05/15/2026 07 PM PDT            4.03            297         0              Normal
  05/15/2026 08 PM PDT            4.02            293         -              Normal
  05/15/2026 09 PM PDT            4.02            293         0              Normal
  05/15/2026 10 PM PDT            4.02            293         0              Normal
  05/15/2026 11 PM PDT            4.01            290         -              Normal
  05/16/2026 12 AM PDT            4.01            290         0              Normal
  05/16/2026 01 AM PDT            4.01            290         0              Normal
  05/16/2026 02 AM PDT            4.01            290         0              Normal
  05/16/2026 03 AM PDT            4.00            286         -              Normal
  05/16/2026 04 AM PDT            4.00            286         0              Normal
  05/16/2026 05 AM PDT            4.00            286         0              Normal
  05/16/2026 06 AM PDT            4.00            286         0              Normal
  05/16/2026 07 AM PDT            3.99            282         -              Normal
  05/16/2026 08 AM PDT            3.99            282         0              Normal
  05/16/2026 09 AM PDT            3.99            282         0              Normal
  05/16/2026 10 AM PDT            3.99            282         0              Normal
  05/16/2026 11 AM PDT            3.98            278         -              Normal
  05/16/2026 12 PM PDT            3.98            278         0              Normal
  05/16/2026 01 PM PDT            3.98            278         0              Normal
  05/16/2026 02 PM PDT            3.98            278         0              Normal
  05/16/2026 03 PM PDT            3.98            278         0              Normal
  05/16/2026 04 PM PDT            3.97            275         -              Normal
  05/16/2026 05 PM PDT            3.97            275         0              Normal
  05/16/2026 06 PM PDT            3.97            275         0              Normal
  05/16/2026 07 PM PDT            3.97            275         0              Normal
  05/16/2026 08 PM PDT            3.96            271         -              Normal
  05/16/2026 09 PM PDT            3.96            271         0              Normal
  05/16/2026 10 PM PDT            3.96            271         0              Normal
  05/16/2026 11 PM PDT            3.96            271         0              Normal
  05/17/2026 12 AM PDT            3.96            271         0              Normal
  05/17/2026 01 AM PDT            3.95            267         -              Normal
  05/17/2026 02 AM PDT            3.95            267         0              Normal
  05/17/2026 03 AM PDT            3.95            267         0              Normal
  05/17/2026 04 AM PDT            3.95            267         0              Normal
  05/17/2026 05 AM PDT            3.94            264         -              Normal
  05/17/2026 06 AM PDT            3.94            264         0              Normal
  05/17/2026 07 AM PDT            3.94            264         0              Normal
  05/17/2026 08 AM PDT            3.94            264         0              Normal
  05/17/2026 09 AM PDT            3.94            264         0              Normal
  05/17/2026 10 AM PDT            3.93            260         -              Normal
  05/17/2026 11 AM PDT            3.93            260         0              Normal
  05/17/2026 12 PM PDT            3.93            260         0              Normal
  05/17/2026 01 PM PDT            3.93            260         0              Normal
  05/17/2026 02 PM PDT            3.93            260         0              Normal
  05/17/2026 03 PM PDT            3.92            257         -              Normal
  05/17/2026 04 PM PDT            3.92            257         0              Normal
  05/17/2026 05 PM PDT            3.92            257         0              Normal
  05/17/2026 06 PM PDT            3.92            257         0              Normal
  05/17/2026 07 PM PDT            3.92            257         0              Normal
  05/17/2026 08 PM PDT            3.91            253         -              Normal
  05/17/2026 09 PM PDT            3.91            253         0              Normal
  05/17/2026 10 PM PDT            3.91            253         0              Normal
  05/17/2026 11 PM PDT            3.91            253         0              Normal
  05/18/2026 12 AM PDT            3.90            250         -              Normal
  05/18/2026 01 AM PDT            3.90            250         0              Normal
  05/18/2026 02 AM PDT            3.90            250         0              Normal
  05/18/2026 03 AM PDT            3.90            250         0              Normal
  05/18/2026 04 AM PDT            3.90            250         0              Normal
  05/18/2026 05 AM PDT            3.90            250         0              Normal
  05/18/2026 06 AM PDT            3.89            247         -              Normal
  05/18/2026 07 AM PDT            3.89            247         0              Normal
  05/18/2026 08 AM PDT            3.89            247         0              Normal
  05/18/2026 09 AM PDT            3.89            247         0              Normal
  05/18/2026 10 AM PDT            3.89            247         0              Normal
  05/18/2026 11 AM PDT            3.88            243         -              Normal
  05/18/2026 12 PM PDT            3.88            243         0              Normal
  05/18/2026 01 PM PDT            3.88            243         0              Normal
  05/18/2026 02 PM PDT            3.88            243         0              Normal
  05/18/2026 03 PM PDT            3.88            243         0              Normal
  05/18/2026 04 PM PDT            3.88            243         0              Normal
  05/18/2026 05 PM PDT            3.87            240         -              Normal
  05/18/2026 06 PM PDT            3.87            240         0              Normal
  05/18/2026 07 PM PDT            3.87            240         0              Normal
  05/18/2026 08 PM PDT            3.87            240         0              Normal
  05/18/2026 09 PM PDT            3.87            240         0              Normal
  05/18/2026 10 PM PDT            3.86            237         -              Normal
  05/18/2026 11 PM PDT            3.86            237         0              Normal
  05/19/2026 12 AM PDT            3.86            237         0              Normal
  05/19/2026 01 AM PDT            3.86            237         0              Normal
  05/19/2026 02 AM PDT            3.86            237         0              Normal
  05/19/2026 03 AM PDT            3.85            233         -              Normal
  05/19/2026 04 AM PDT            3.85            233         0              Normal
  05/19/2026 05 AM PDT            3.85            233         0              Normal
  05/19/2026 06 AM PDT            3.85            233         0              Normal
  05/19/2026 07 AM PDT            3.85            233         0              Normal
  05/19/2026 08 AM PDT            3.85            233         0              Normal
  05/19/2026 09 AM PDT            3.85            233         0              Normal
  05/19/2026 10 AM PDT            3.84            230         -              Normal
  05/19/2026 11 AM PDT            3.84            230         0              Normal
  05/19/2026 12 PM PDT            3.84            230         0              Normal
  05/19/2026 01 PM PDT            3.84            230         0              Normal
  05/19/2026 02 PM PDT            3.84            230         0              Normal
  05/19/2026 03 PM PDT            3.84            230         0              Normal
  05/19/2026 04 PM PDT            3.83            227         -              Normal
  05/19/2026 05 PM PDT            3.83            227         0              Normal
  05/19/2026 06 PM PDT            3.83            227         0              Normal
  05/19/2026 07 PM PDT            3.83            227         0              Normal
  05/19/2026 08 PM PDT            3.83            227         0              Normal
  05/19/2026 09 PM PDT            3.83            227         0              Normal
  05/19/2026 10 PM PDT            3.82            224         -              Normal
  05/19/2026 11 PM PDT            3.82            224         0              Normal
  05/20/2026 12 AM PDT            3.82            224         0              Normal
  05/20/2026 01 AM PDT            3.82            224         0              Normal
  05/20/2026 02 AM PDT            3.82            224         0              Normal
  05/20/2026 03 AM PDT            3.82            224         0              Normal
  05/20/2026 04 AM PDT            3.81            220         -              Normal
  05/20/2026 05 AM PDT            3.81            220         0              Normal
#
# 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.