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

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MERCED RIVER - YOSEMITE NP AT HAPPY ISLES (HPIC1)
Latitude: 37.73º NLongitude: 119.56º WElevation: 4017 Feet
Location: Mariposa County in CaliforniaBulletin Group: San JoaquinRiver Group: San Joaquin
Issuance Time: Dec 08 2023 at 8:07 AM PSTNext Issuance: Dec 08 2023 at 3:00 PM PST
Monitor Stage: N/A Flood Stage: 7.5 Feet

# Tabular Observed and Forecast Hydrograph Information
#
# Location: Merced River - Yosemite NP at Happy Isles (HPIC1)
#
# File Generation Time:  12/08/2023 at 08:07 AM PST
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  12/07/2023 at 10:00 AM PST
# Maximum Observed Stage:                       1.3 Feet
# Maximum Observed Flow:                        29 cfs
#
# Earliest Date & Time of Maximum Forecast:     12/10/2023 at 10:00 AM PST
# Maximum Forecast Stage:                       1.3 Feet
# Maximum Forecast Flow:                        26 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  12/03/2023 08 AM PST             1.2             24                        Normal
  12/03/2023 09 AM PST             1.2             24         0              Normal
  12/03/2023 10 AM PST             1.2             24         0              Normal
  12/03/2023 11 AM PST             1.2             24         0              Normal
  12/03/2023 12 PM PST             1.2             24         0              Normal
  12/03/2023 01 PM PST             1.2             25         +              Normal
  12/03/2023 02 PM PST             1.2             25         0              Normal
  12/03/2023 03 PM PST             1.2             24         -              Normal
  12/03/2023 04 PM PST             1.2             25         +              Normal
  12/03/2023 05 PM PST             1.2             25         0              Normal
  12/03/2023 06 PM PST             1.2             25         0              Normal
  12/03/2023 07 PM PST             1.2             25         0              Normal
  12/03/2023 08 PM PST             1.2             25         0              Normal
  12/03/2023 09 PM PST             1.2             25         0              Normal
  12/03/2023 10 PM PST             1.2             25         0              Normal
  12/03/2023 11 PM PST             1.2             25         0              Normal
  12/04/2023 12 AM PST             1.2             24         -              Normal
  12/04/2023 01 AM PST             1.2             25         +              Normal
  12/04/2023 02 AM PST             1.2             25         0              Normal
  12/04/2023 03 AM PST             1.2             25         0              Normal
  12/04/2023 04 AM PST             1.2             25         0              Normal
  12/04/2023 05 AM PST             1.2             24         -              Normal
  12/04/2023 06 AM PST             1.2             24         0              Normal
  12/04/2023 07 AM PST             1.2             23         -              Normal
  12/04/2023 08 AM PST             1.2             24         +              Normal
  12/04/2023 09 AM PST             1.2             24         0              Normal
  12/04/2023 10 AM PST             1.2             24         0              Normal
  12/04/2023 11 AM PST             1.2             25         +              Normal
  12/04/2023 12 PM PST             1.2             25         0              Normal
  12/04/2023 01 PM PST             1.2             24         -              Normal
  12/04/2023 02 PM PST             1.2             24         0              Normal
  12/04/2023 03 PM PST             1.2             24         -              Normal
  12/04/2023 04 PM PST             1.2             24         +              Normal
  12/04/2023 05 PM PST             1.2             24         0              Normal
  12/04/2023 06 PM PST             1.2             24         -              Normal
  12/04/2023 07 PM PST             1.2             24         0              Normal
  12/04/2023 08 PM PST             1.2             24         0              Normal
  12/04/2023 09 PM PST             1.2             24         0              Normal
  12/04/2023 10 PM PST             1.2             24         0              Normal
  12/04/2023 11 PM PST             1.2             24         0              Normal
  12/05/2023 12 AM PST             1.2             24         0              Normal
  12/05/2023 01 AM PST             1.2             24         0              Normal
  12/05/2023 02 AM PST             1.2             24         0              Normal
  12/05/2023 03 AM PST             1.2             24         0              Normal
  12/05/2023 04 AM PST             1.2             24         0              Normal
  12/05/2023 05 AM PST             1.2             23         -              Normal
  12/05/2023 06 AM PST             1.2             23         -              Normal
  12/05/2023 07 AM PST             1.2             22         -              Normal
  12/05/2023 08 AM PST             1.2             22         0              Normal
  12/05/2023 09 AM PST             1.2             22         0              Normal
  12/05/2023 10 AM PST             1.2             22         -              Normal
  12/05/2023 11 AM PST             1.2             22         +              Normal
  12/05/2023 12 PM PST             1.2             25         +              Normal
  12/05/2023 01 PM PST             1.3             28         +              Normal
  12/05/2023 02 PM PST             1.2             25         -              Normal
  12/05/2023 03 PM PST             1.2             24         -              Normal
  12/05/2023 04 PM PST             1.2             24         -              Normal
  12/05/2023 05 PM PST             1.2             23         -              Normal
  12/05/2023 06 PM PST             1.2             24         +              Normal
  12/05/2023 07 PM PST             1.2             24         0              Normal
  12/05/2023 08 PM PST             1.2             24         0              Normal
  12/05/2023 09 PM PST             1.2             24         0              Normal
  12/05/2023 10 PM PST             1.2             24         0              Normal
  12/05/2023 11 PM PST             1.2             23         -              Normal
  12/06/2023 12 AM PST             1.2             23         0              Normal
  12/06/2023 01 AM PST             1.2             24         +              Normal
  12/06/2023 02 AM PST             1.2             23         -              Normal
  12/06/2023 03 AM PST             1.2             23         0              Normal
  12/06/2023 04 AM PST             1.2             23         0              Normal
  12/06/2023 05 AM PST             1.2             23         0              Normal
  12/06/2023 06 AM PST             1.2             23         0              Normal
  12/06/2023 07 AM PST             1.2             24         +              Normal
  12/06/2023 08 AM PST             1.2             23         -              Normal
  12/06/2023 09 AM PST             1.2             23         0              Normal
  12/06/2023 10 AM PST             1.2             23         -              Normal
  12/06/2023 11 AM PST             1.2             23         +              Normal
  12/06/2023 12 PM PST             1.2             25         +              Normal
  12/06/2023 01 PM PST             1.2             24         -              Normal
  12/06/2023 02 PM PST             1.2             23         -              Normal
  12/06/2023 03 PM PST             1.2             23         0              Normal
  12/06/2023 04 PM PST             1.2             24         +              Normal
  12/06/2023 05 PM PST             1.2             24         0              Normal
  12/06/2023 06 PM PST             1.2             24         +              Normal
  12/06/2023 07 PM PST             1.3             25         +              Normal
  12/06/2023 08 PM PST             1.3             26         +              Normal
  12/06/2023 09 PM PST             1.3             26         0              Normal
  12/06/2023 10 PM PST             1.3             26         0              Normal
  12/06/2023 11 PM PST             1.3             27         +              Normal
  12/07/2023 12 AM PST             1.3             28         +              Normal
  12/07/2023 01 AM PST             1.3             27         -              Normal
  12/07/2023 02 AM PST             1.3             27         0              Normal
  12/07/2023 03 AM PST             1.3             27         0              Normal
  12/07/2023 04 AM PST             1.3             27         0              Normal
  12/07/2023 05 AM PST             1.3             28         +              Normal
  12/07/2023 06 AM PST             1.3             28         +              Normal
  12/07/2023 07 AM PST             1.3             29         +              Normal
  12/07/2023 08 AM PST             1.3             29         0              Normal
  12/07/2023 09 AM PST             1.3             29         0              Normal
  12/07/2023 10 AM PST             1.3             29         0              Normal
  12/07/2023 11 AM PST             1.3             28         -              Normal
  12/07/2023 12 PM PST             1.3             28         0              Normal
  12/07/2023 01 PM PST             1.3             28         -              Normal
  12/07/2023 02 PM PST             1.3             27         -              Normal
  12/07/2023 03 PM PST             1.3             26         -              Normal
  12/07/2023 04 PM PST             1.3             25         -              Normal
  12/07/2023 05 PM PST             1.2             25         -              Normal
  12/07/2023 06 PM PST             1.2             24         -              Normal
  12/07/2023 07 PM PST             1.3             26         +              Normal
  12/07/2023 08 PM PST             1.3             26         +              Normal
  12/07/2023 09 PM PST             1.3             26         0              Normal
  12/07/2023 10 PM PST             1.3             26         0              Normal
  12/07/2023 11 PM PST             1.3             26         0              Normal
  12/08/2023 12 AM PST             1.3             26         0              Normal
  12/08/2023 01 AM PST             1.3             26         -              Normal
  12/08/2023 02 AM PST             1.3             26         0              Normal
  12/08/2023 03 AM PST             1.3             26         0              Normal
  12/08/2023 04 AM PST             1.3             25         -              Normal
  12/08/2023 05 AM PST             1.2             25         -              Normal
  12/08/2023 06 AM PST             1.2             25         0              Normal
  12/08/2023 07 AM PST             1.2             25         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  12/08/2023 08 AM PST             1.2             25                        Normal
  12/08/2023 09 AM PST             1.2             25         0              Normal
  12/08/2023 10 AM PST             1.2             25         0              Normal
  12/08/2023 11 AM PST             1.2             25         0              Normal
  12/08/2023 12 PM PST             1.2             25         0              Normal
  12/08/2023 01 PM PST             1.2             25         0              Normal
  12/08/2023 02 PM PST             1.2             25         0              Normal
  12/08/2023 03 PM PST             1.2             25         0              Normal
  12/08/2023 04 PM PST             1.2             25         0              Normal
  12/08/2023 05 PM PST             1.2             25         0              Normal
  12/08/2023 06 PM PST             1.2             25         0              Normal
  12/08/2023 07 PM PST             1.2             25         0              Normal
  12/08/2023 08 PM PST             1.2             25         0              Normal
  12/08/2023 09 PM PST             1.2             25         0              Normal
  12/08/2023 10 PM PST             1.2             25         0              Normal
  12/08/2023 11 PM PST             1.2             25         0              Normal
  12/09/2023 12 AM PST             1.2             25         0              Normal
  12/09/2023 01 AM PST             1.2             25         0              Normal
  12/09/2023 02 AM PST             1.2             25         0              Normal
  12/09/2023 03 AM PST             1.2             25         0              Normal
  12/09/2023 04 AM PST             1.2             25         0              Normal
  12/09/2023 05 AM PST             1.2             25         0              Normal
  12/09/2023 06 AM PST             1.2             25         0              Normal
  12/09/2023 07 AM PST             1.2             25         0              Normal
  12/09/2023 08 AM PST             1.2             25         0              Normal
  12/09/2023 09 AM PST             1.2             25         0              Normal
  12/09/2023 10 AM PST             1.2             25         0              Normal
  12/09/2023 11 AM PST             1.2             25         0              Normal
  12/09/2023 12 PM PST             1.2             25         0              Normal
  12/09/2023 01 PM PST             1.2             25         0              Normal
  12/09/2023 02 PM PST             1.2             25         0              Normal
  12/09/2023 03 PM PST             1.2             25         0              Normal
  12/09/2023 04 PM PST             1.2             25         0              Normal
  12/09/2023 05 PM PST             1.2             25         0              Normal
  12/09/2023 06 PM PST             1.2             25         0              Normal
  12/09/2023 07 PM PST             1.2             25         0              Normal
  12/09/2023 08 PM PST             1.2             25         0              Normal
  12/09/2023 09 PM PST             1.2             25         0              Normal
  12/09/2023 10 PM PST             1.3             25         +              Normal
  12/09/2023 11 PM PST             1.3             25         0              Normal
  12/10/2023 12 AM PST             1.3             25         0              Normal
  12/10/2023 01 AM PST             1.3             25         0              Normal
  12/10/2023 02 AM PST             1.3             25         0              Normal
  12/10/2023 03 AM PST             1.3             25         0              Normal
  12/10/2023 04 AM PST             1.3             25         0              Normal
  12/10/2023 05 AM PST             1.3             25         0              Normal
  12/10/2023 06 AM PST             1.3             25         0              Normal
  12/10/2023 07 AM PST             1.3             25         0              Normal
  12/10/2023 08 AM PST             1.3             25         0              Normal
  12/10/2023 09 AM PST             1.3             25         0              Normal
  12/10/2023 10 AM PST             1.3             26         +              Normal
  12/10/2023 11 AM PST             1.3             26         0              Normal
  12/10/2023 12 PM PST             1.3             26         0              Normal
  12/10/2023 01 PM PST             1.3             26         0              Normal
  12/10/2023 02 PM PST             1.3             26         0              Normal
  12/10/2023 03 PM PST             1.3             26         0              Normal
  12/10/2023 04 PM PST             1.3             26         0              Normal
  12/10/2023 05 PM PST             1.3             26         0              Normal
  12/10/2023 06 PM PST             1.3             26         0              Normal
  12/10/2023 07 PM PST             1.3             26         0              Normal
  12/10/2023 08 PM PST             1.3             26         0              Normal
  12/10/2023 09 PM PST             1.3             26         0              Normal
  12/10/2023 10 PM PST             1.3             26         0              Normal
  12/10/2023 11 PM PST             1.3             26         0              Normal
  12/11/2023 12 AM PST             1.3             26         0              Normal
  12/11/2023 01 AM PST             1.3             26         0              Normal
  12/11/2023 02 AM PST             1.3             26         0              Normal
  12/11/2023 03 AM PST             1.3             26         0              Normal
  12/11/2023 04 AM PST             1.3             26         0              Normal
  12/11/2023 05 AM PST             1.3             26         0              Normal
  12/11/2023 06 AM PST             1.3             26         0              Normal
  12/11/2023 07 AM PST             1.3             26         0              Normal
  12/11/2023 08 AM PST             1.3             26         0              Normal
  12/11/2023 09 AM PST             1.3             26         0              Normal
  12/11/2023 10 AM PST             1.3             26         0              Normal
  12/11/2023 11 AM PST             1.3             26         0              Normal
  12/11/2023 12 PM PST             1.3             26         0              Normal
  12/11/2023 01 PM PST             1.3             26         0              Normal
  12/11/2023 02 PM PST             1.3             26         0              Normal
  12/11/2023 03 PM PST             1.3             26         0              Normal
  12/11/2023 04 PM PST             1.3             26         0              Normal
  12/11/2023 05 PM PST             1.3             26         0              Normal
  12/11/2023 06 PM PST             1.3             26         0              Normal
  12/11/2023 07 PM PST             1.3             26         0              Normal
  12/11/2023 08 PM PST             1.3             26         0              Normal
  12/11/2023 09 PM PST             1.3             26         0              Normal
  12/11/2023 10 PM PST             1.3             25         -              Normal
  12/11/2023 11 PM PST             1.3             25         0              Normal
  12/12/2023 12 AM PST             1.3             25         0              Normal
  12/12/2023 01 AM PST             1.3             25         0              Normal
  12/12/2023 02 AM PST             1.3             25         0              Normal
  12/12/2023 03 AM PST             1.3             25         0              Normal
  12/12/2023 04 AM PST             1.3             25         0              Normal
  12/12/2023 05 AM PST             1.3             25         0              Normal
  12/12/2023 06 AM PST             1.3             25         0              Normal
  12/12/2023 07 AM PST             1.3             25         0              Normal
  12/12/2023 08 AM PST             1.3             25         0              Normal
  12/12/2023 09 AM PST             1.3             25         0              Normal
  12/12/2023 10 AM PST             1.3             25         0              Normal
  12/12/2023 11 AM PST             1.3             25         0              Normal
  12/12/2023 12 PM PST             1.3             25         0              Normal
  12/12/2023 01 PM PST             1.3             25         0              Normal
  12/12/2023 02 PM PST             1.3             25         0              Normal
  12/12/2023 03 PM PST             1.3             25         0              Normal
  12/12/2023 04 PM PST             1.3             25         0              Normal
  12/12/2023 05 PM PST             1.3             25         0              Normal
  12/12/2023 06 PM PST             1.3             25         0              Normal
  12/12/2023 07 PM PST             1.3             25         0              Normal
  12/12/2023 08 PM PST             1.2             25         -              Normal
  12/12/2023 09 PM PST             1.2             25         0              Normal
  12/12/2023 10 PM PST             1.2             25         0              Normal
  12/12/2023 11 PM PST             1.2             25         0              Normal
  12/13/2023 12 AM PST             1.2             25         0              Normal
  12/13/2023 01 AM PST             1.2             25         0              Normal
  12/13/2023 02 AM PST             1.2             25         0              Normal
  12/13/2023 03 AM PST             1.2             25         0              Normal
  12/13/2023 04 AM PST             1.2             25         0              Normal
#
# NOTE 1: Stages are rounded to the nearest tenth (.1) 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.