MIDDLE FORK FEATHER RIVER - MERRIMAC (MRMC1)
Latitude: 39.70º NLongitude: 121.27º WElevation: 1560 FeetForecast Type: Unofficial Location
Location: Butte County in CaliforniaBulletin Group: Lower SacramentoRiver Group: Feather Yuba
Issuance Time: May 19 2026 at 7:58 AM PDTNext Issuance: May 20 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 Feather River - Merrimac (MRMC1)
#
# File Generation Time:  05/19/2026 at 08:00 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  05/14/2026 at 03:00 PM PDT
# Maximum Observed Stage:                       1605.02 Feet
# Maximum Observed Flow:                        730 cfs
#
# Earliest Date & Time of Maximum Forecast:     05/19/2026 at 08:00 AM PDT
# Maximum Forecast Stage:                       1604.83 Feet
# Maximum Forecast Flow:                        619 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  05/14/2026 08 AM PDT         1605.02            730                Not Applicable
  05/14/2026 09 AM PDT         1605.02            730         0      Not Applicable
  05/14/2026 10 AM PDT         1605.02            730         0      Not Applicable
  05/14/2026 11 AM PDT         1605.02            730         0      Not Applicable
  05/14/2026 12 PM PDT         1605.02            730         0      Not Applicable
  05/14/2026 01 PM PDT         1605.01            724         -      Not Applicable
  05/14/2026 02 PM PDT         1605.02            730         +      Not Applicable
  05/14/2026 03 PM PDT         1605.02            730         0      Not Applicable
  05/14/2026 04 PM PDT         1605.01            724         -      Not Applicable
  05/14/2026 05 PM PDT         1605.01            724         0      Not Applicable
  05/14/2026 06 PM PDT         1605.00            718         -      Not Applicable
  05/14/2026 07 PM PDT         1605.00            718         0      Not Applicable
  05/14/2026 08 PM PDT         1605.00            718         0      Not Applicable
  05/14/2026 09 PM PDT         1604.99            712         -      Not Applicable
  05/14/2026 10 PM PDT         1604.99            712         0      Not Applicable
  05/14/2026 11 PM PDT         1604.98            706         -      Not Applicable
  05/15/2026 12 AM PDT         1604.98            706         0      Not Applicable
  05/15/2026 01 AM PDT         1604.98            706         0      Not Applicable
  05/15/2026 02 AM PDT         1604.98            706         0      Not Applicable
  05/15/2026 03 AM PDT         1604.98            706         0      Not Applicable
  05/15/2026 04 AM PDT         1604.98            706         0      Not Applicable
  05/15/2026 05 AM PDT         1604.98            706         0      Not Applicable
  05/15/2026 06 AM PDT         1604.97            700         -      Not Applicable
  05/15/2026 07 AM PDT         1604.98            706         +      Not Applicable
  05/15/2026 08 AM PDT         1604.97            700         -      Not Applicable
  05/15/2026 09 AM PDT         1604.97            700         0      Not Applicable
  05/15/2026 10 AM PDT         1604.97            700         0      Not Applicable
  05/15/2026 11 AM PDT         1604.97            700         0      Not Applicable
  05/15/2026 12 PM PDT         1604.97            700         0      Not Applicable
  05/15/2026 01 PM PDT         1604.97            700         0      Not Applicable
  05/15/2026 02 PM PDT         1604.96            694         -      Not Applicable
  05/15/2026 03 PM PDT         1604.97            700         +      Not Applicable
  05/15/2026 04 PM PDT         1604.96            694         -      Not Applicable
  05/15/2026 05 PM PDT         1604.96            694         0      Not Applicable
  05/15/2026 06 PM PDT         1604.95            688         -      Not Applicable
  05/15/2026 07 PM PDT         1604.95            688         0      Not Applicable
  05/15/2026 08 PM PDT         1604.95            688         0      Not Applicable
  05/15/2026 09 PM PDT         1604.95            688         0      Not Applicable
  05/15/2026 10 PM PDT         1604.94            682         -      Not Applicable
  05/15/2026 11 PM PDT         1604.94            682         0      Not Applicable
  05/16/2026 12 AM PDT         1604.93            676         -      Not Applicable
  05/16/2026 01 AM PDT         1604.93            676         0      Not Applicable
  05/16/2026 02 AM PDT         1604.93            676         0      Not Applicable
  05/16/2026 03 AM PDT         1604.93            676         0      Not Applicable
  05/16/2026 04 AM PDT         1604.93            676         0      Not Applicable
  05/16/2026 05 AM PDT         1604.93            676         0      Not Applicable
  05/16/2026 06 AM PDT         1604.93            676         0      Not Applicable
  05/16/2026 07 AM PDT         1604.93            676         0      Not Applicable
  05/16/2026 08 AM PDT         1604.93            676         0      Not Applicable
  05/16/2026 09 AM PDT         1604.93            676         0      Not Applicable
  05/16/2026 10 AM PDT         1604.93            676         0      Not Applicable
  05/16/2026 11 AM PDT         1604.92            670         -      Not Applicable
  05/16/2026 12 PM PDT         1604.92            670         0      Not Applicable
  05/16/2026 01 PM PDT         1604.92            670         0      Not Applicable
  05/16/2026 02 PM PDT         1604.92            670         0      Not Applicable
  05/16/2026 03 PM PDT         1604.92            670         0      Not Applicable
  05/16/2026 04 PM PDT         1604.92            670         0      Not Applicable
  05/16/2026 05 PM PDT         1604.92            670         0      Not Applicable
  05/16/2026 06 PM PDT         1604.92            670         0      Not Applicable
  05/16/2026 07 PM PDT         1604.92            670         0      Not Applicable
  05/16/2026 08 PM PDT         1604.91            665         -      Not Applicable
  05/16/2026 09 PM PDT         1604.91            665         0      Not Applicable
  05/16/2026 10 PM PDT         1604.90            659         -      Not Applicable
  05/16/2026 11 PM PDT         1604.90            659         0      Not Applicable
  05/17/2026 12 AM PDT         1604.90            659         0      Not Applicable
  05/17/2026 01 AM PDT         1604.90            659         0      Not Applicable
  05/17/2026 02 AM PDT         1604.89            653         -      Not Applicable
  05/17/2026 03 AM PDT         1604.90            659         +      Not Applicable
  05/17/2026 04 AM PDT         1604.89            653         -      Not Applicable
  05/17/2026 05 AM PDT         1604.89            653         0      Not Applicable
  05/17/2026 06 AM PDT         1604.89            653         0      Not Applicable
  05/17/2026 07 AM PDT         1604.90            659         +      Not Applicable
  05/17/2026 08 AM PDT         1604.89            653         -      Not Applicable
  05/17/2026 09 AM PDT         1604.89            653         0      Not Applicable
  05/17/2026 10 AM PDT         1604.89            653         0      Not Applicable
  05/17/2026 11 AM PDT         1604.89            653         0      Not Applicable
  05/17/2026 12 PM PDT         1604.89            653         0      Not Applicable
  05/17/2026 01 PM PDT         1604.89            653         0      Not Applicable
  05/17/2026 02 PM PDT         1604.89            653         0      Not Applicable
  05/17/2026 03 PM PDT         1604.89            653         0      Not Applicable
  05/17/2026 04 PM PDT         1604.89            653         0      Not Applicable
  05/17/2026 05 PM PDT         1604.88            647         -      Not Applicable
  05/17/2026 06 PM PDT         1604.87            641         -      Not Applicable
  05/17/2026 07 PM PDT         1604.87            641         0      Not Applicable
  05/17/2026 08 PM PDT         1604.87            641         0      Not Applicable
  05/17/2026 09 PM PDT         1604.87            641         0      Not Applicable
  05/17/2026 10 PM PDT         1604.87            641         0      Not Applicable
  05/17/2026 11 PM PDT         1604.87            641         0      Not Applicable
  05/18/2026 12 AM PDT         1604.86            636         -      Not Applicable
  05/18/2026 01 AM PDT         1604.86            636         0      Not Applicable
  05/18/2026 02 AM PDT         1604.86            636         0      Not Applicable
  05/18/2026 03 AM PDT         1604.87            641         +      Not Applicable
  05/18/2026 04 AM PDT         1604.86            636         -      Not Applicable
  05/18/2026 05 AM PDT         1604.86            636         0      Not Applicable
  05/18/2026 06 AM PDT         1604.86            636         0      Not Applicable
  05/18/2026 07 AM PDT         1604.86            636         0      Not Applicable
  05/18/2026 08 AM PDT         1604.86            636         0      Not Applicable
  05/18/2026 09 AM PDT         1604.87            641         +      Not Applicable
  05/18/2026 10 AM PDT         1604.86            636         -      Not Applicable
  05/18/2026 11 AM PDT         1604.86            636         0      Not Applicable
  05/18/2026 12 PM PDT         1604.87            641         +      Not Applicable
  05/18/2026 01 PM PDT         1604.87            641         0      Not Applicable
  05/18/2026 02 PM PDT         1604.86            636         -      Not Applicable
  05/18/2026 03 PM PDT         1604.85            630         -      Not Applicable
  05/18/2026 04 PM PDT         1604.86            636         +      Not Applicable
  05/18/2026 05 PM PDT         1604.86            636         0      Not Applicable
  05/18/2026 06 PM PDT         1604.86            636         0      Not Applicable
  05/18/2026 07 PM PDT         1604.84            624         -      Not Applicable
  05/18/2026 08 PM PDT         1604.85            630         +      Not Applicable
  05/18/2026 09 PM PDT         1604.85            630         0      Not Applicable
  05/18/2026 10 PM PDT         1604.84            624         -      Not Applicable
  05/18/2026 11 PM PDT         1604.84            624         0      Not Applicable
  05/19/2026 12 AM PDT         1604.83            619         -      Not Applicable
  05/19/2026 01 AM PDT         1604.84            624         +      Not Applicable
  05/19/2026 02 AM PDT         1604.84            624         0      Not Applicable
  05/19/2026 03 AM PDT         1604.84            624         0      Not Applicable
  05/19/2026 04 AM PDT         1604.83            619         -      Not Applicable
  05/19/2026 05 AM PDT         1604.83            619         0      Not Applicable
  05/19/2026 06 AM PDT         1604.83            619         0      Not Applicable
  05/19/2026 07 AM PDT         1604.83            619         0      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  05/19/2026 08 AM PDT         1604.83            619                Not Applicable
  05/19/2026 09 AM PDT         1604.83            619         0      Not Applicable
  05/19/2026 10 AM PDT         1604.82            613         -      Not Applicable
  05/19/2026 11 AM PDT         1604.82            613         0      Not Applicable
  05/19/2026 12 PM PDT         1604.82            613         0      Not Applicable
  05/19/2026 01 PM PDT         1604.82            613         0      Not Applicable
  05/19/2026 02 PM PDT         1604.82            613         0      Not Applicable
  05/19/2026 03 PM PDT         1604.82            613         0      Not Applicable
  05/19/2026 04 PM PDT         1604.81            607         -      Not Applicable
  05/19/2026 05 PM PDT         1604.81            607         0      Not Applicable
  05/19/2026 06 PM PDT         1604.81            607         0      Not Applicable
  05/19/2026 07 PM PDT         1604.81            607         0      Not Applicable
  05/19/2026 08 PM PDT         1604.81            607         0      Not Applicable
  05/19/2026 09 PM PDT         1604.81            607         0      Not Applicable
  05/19/2026 10 PM PDT         1604.81            607         0      Not Applicable
  05/19/2026 11 PM PDT         1604.80            602         -      Not Applicable
  05/20/2026 12 AM PDT         1604.80            602         0      Not Applicable
  05/20/2026 01 AM PDT         1604.80            602         0      Not Applicable
  05/20/2026 02 AM PDT         1604.80            602         0      Not Applicable
  05/20/2026 03 AM PDT         1604.80            602         0      Not Applicable
  05/20/2026 04 AM PDT         1604.80            602         0      Not Applicable
  05/20/2026 05 AM PDT         1604.80            602         0      Not Applicable
  05/20/2026 06 AM PDT         1604.79            596         -      Not Applicable
  05/20/2026 07 AM PDT         1604.79            596         0      Not Applicable
  05/20/2026 08 AM PDT         1604.79            596         0      Not Applicable
  05/20/2026 09 AM PDT         1604.79            596         0      Not Applicable
  05/20/2026 10 AM PDT         1604.79            596         0      Not Applicable
  05/20/2026 11 AM PDT         1604.79            596         0      Not Applicable
  05/20/2026 12 PM PDT         1604.79            596         0      Not Applicable
  05/20/2026 01 PM PDT         1604.79            596         0      Not Applicable
  05/20/2026 02 PM PDT         1604.78            590         -      Not Applicable
  05/20/2026 03 PM PDT         1604.78            590         0      Not Applicable
  05/20/2026 04 PM PDT         1604.78            590         0      Not Applicable
  05/20/2026 05 PM PDT         1604.78            590         0      Not Applicable
  05/20/2026 06 PM PDT         1604.78            590         0      Not Applicable
  05/20/2026 07 PM PDT         1604.78            590         0      Not Applicable
  05/20/2026 08 PM PDT         1604.78            590         0      Not Applicable
  05/20/2026 09 PM PDT         1604.77            584         -      Not Applicable
  05/20/2026 10 PM PDT         1604.77            584         0      Not Applicable
  05/20/2026 11 PM PDT         1604.77            584         0      Not Applicable
  05/21/2026 12 AM PDT         1604.77            584         0      Not Applicable
  05/21/2026 01 AM PDT         1604.77            584         0      Not Applicable
  05/21/2026 02 AM PDT         1604.77            584         0      Not Applicable
  05/21/2026 03 AM PDT         1604.77            584         0      Not Applicable
  05/21/2026 04 AM PDT         1604.76            579         -      Not Applicable
  05/21/2026 05 AM PDT         1604.76            579         0      Not Applicable
  05/21/2026 06 AM PDT         1604.76            579         0      Not Applicable
  05/21/2026 07 AM PDT         1604.76            579         0      Not Applicable
  05/21/2026 08 AM PDT         1604.76            579         0      Not Applicable
  05/21/2026 09 AM PDT         1604.76            579         0      Not Applicable
  05/21/2026 10 AM PDT         1604.76            579         0      Not Applicable
  05/21/2026 11 AM PDT         1604.76            579         0      Not Applicable
  05/21/2026 12 PM PDT         1604.75            573         -      Not Applicable
  05/21/2026 01 PM PDT         1604.75            573         0      Not Applicable
  05/21/2026 02 PM PDT         1604.75            573         0      Not Applicable
  05/21/2026 03 PM PDT         1604.75            573         0      Not Applicable
  05/21/2026 04 PM PDT         1604.75            573         0      Not Applicable
  05/21/2026 05 PM PDT         1604.75            573         0      Not Applicable
  05/21/2026 06 PM PDT         1604.74            567         -      Not Applicable
  05/21/2026 07 PM PDT         1604.74            567         0      Not Applicable
  05/21/2026 08 PM PDT         1604.74            567         0      Not Applicable
  05/21/2026 09 PM PDT         1604.74            567         0      Not Applicable
  05/21/2026 10 PM PDT         1604.74            567         0      Not Applicable
  05/21/2026 11 PM PDT         1604.74            567         0      Not Applicable
  05/22/2026 12 AM PDT         1604.74            567         0      Not Applicable
  05/22/2026 01 AM PDT         1604.74            567         0      Not Applicable
  05/22/2026 02 AM PDT         1604.73            562         -      Not Applicable
  05/22/2026 03 AM PDT         1604.73            562         0      Not Applicable
  05/22/2026 04 AM PDT         1604.73            562         0      Not Applicable
  05/22/2026 05 AM PDT         1604.73            562         0      Not Applicable
  05/22/2026 06 AM PDT         1604.73            562         0      Not Applicable
  05/22/2026 07 AM PDT         1604.73            562         0      Not Applicable
  05/22/2026 08 AM PDT         1604.73            562         0      Not Applicable
  05/22/2026 09 AM PDT         1604.73            562         0      Not Applicable
  05/22/2026 10 AM PDT         1604.72            556         -      Not Applicable
  05/22/2026 11 AM PDT         1604.72            556         0      Not Applicable
  05/22/2026 12 PM PDT         1604.72            556         0      Not Applicable
  05/22/2026 01 PM PDT         1604.72            556         0      Not Applicable
  05/22/2026 02 PM PDT         1604.72            556         0      Not Applicable
  05/22/2026 03 PM PDT         1604.72            556         0      Not Applicable
  05/22/2026 04 PM PDT         1604.72            556         0      Not Applicable
  05/22/2026 05 PM PDT         1604.72            556         0      Not Applicable
  05/22/2026 06 PM PDT         1604.72            556         0      Not Applicable
  05/22/2026 07 PM PDT         1604.71            550         -      Not Applicable
  05/22/2026 08 PM PDT         1604.71            550         0      Not Applicable
  05/22/2026 09 PM PDT         1604.71            550         0      Not Applicable
  05/22/2026 10 PM PDT         1604.71            550         0      Not Applicable
  05/22/2026 11 PM PDT         1604.71            550         0      Not Applicable
  05/23/2026 12 AM PDT         1604.71            550         0      Not Applicable
  05/23/2026 01 AM PDT         1604.71            550         0      Not Applicable
  05/23/2026 02 AM PDT         1604.71            550         0      Not Applicable
  05/23/2026 03 AM PDT         1604.70            545         -      Not Applicable
  05/23/2026 04 AM PDT         1604.70            545         0      Not Applicable
  05/23/2026 05 AM PDT         1604.70            545         0      Not Applicable
  05/23/2026 06 AM PDT         1604.70            545         0      Not Applicable
  05/23/2026 07 AM PDT         1604.70            545         0      Not Applicable
  05/23/2026 08 AM PDT         1604.70            545         0      Not Applicable
  05/23/2026 09 AM PDT         1604.70            545         0      Not Applicable
  05/23/2026 10 AM PDT         1604.70            545         0      Not Applicable
  05/23/2026 11 AM PDT         1604.69            539         -      Not Applicable
  05/23/2026 12 PM PDT         1604.69            539         0      Not Applicable
  05/23/2026 01 PM PDT         1604.69            539         0      Not Applicable
  05/23/2026 02 PM PDT         1604.69            539         0      Not Applicable
  05/23/2026 03 PM PDT         1604.69            539         0      Not Applicable
  05/23/2026 04 PM PDT         1604.69            539         0      Not Applicable
  05/23/2026 05 PM PDT         1604.69            539         0      Not Applicable
  05/23/2026 06 PM PDT         1604.69            539         0      Not Applicable
  05/23/2026 07 PM PDT         1604.69            539         0      Not Applicable
  05/23/2026 08 PM PDT         1604.68            534         -      Not Applicable
  05/23/2026 09 PM PDT         1604.68            534         0      Not Applicable
  05/23/2026 10 PM PDT         1604.68            534         0      Not Applicable
  05/23/2026 11 PM PDT         1604.68            534         0      Not Applicable
  05/24/2026 12 AM PDT         1604.68            534         0      Not Applicable
  05/24/2026 01 AM PDT         1604.68            534         0      Not Applicable
  05/24/2026 02 AM PDT         1604.68            534         0      Not Applicable
  05/24/2026 03 AM PDT         1604.68            534         0      Not Applicable
  05/24/2026 04 AM PDT         1604.68            534         0      Not Applicable
  05/24/2026 05 AM PDT         1604.67            528         -      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.