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 CaliforniaRiver Group: San Joaquin
Issuance Time: May 17 2022 at 7:52 AM PDTNext Issuance: May 18 2022 at 9:00 AM PDT
Monitor Stage: N/A Flood Stage: 8.0 Feet

# Tabular Observed and Forecast Hydrograph Information
#
# Location: Merced River - Yosemite NP at Happy Isles (HPIC1)
#
# File Generation Time:  05/17/2022 at 07:52 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  05/17/2022 at 03:00 AM PDT
# Maximum Observed Stage:                       4.8 Feet
# Maximum Observed Flow:                        1229 cfs
#
# Earliest Date & Time of Maximum Forecast:     05/18/2022 at 02:00 AM PDT
# Maximum Forecast Stage:                       4.8 Feet
# Maximum Forecast Flow:                        1229 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  05/12/2022 07 AM PDT             3.1            397                        Normal
  05/12/2022 08 AM PDT             3.1            400         +              Normal
  05/12/2022 09 AM PDT             3.0            390         -              Normal
  05/12/2022 10 AM PDT             3.0            383         -              Normal
  05/12/2022 11 AM PDT             3.0            373         -              Normal
  05/12/2022 12 PM PDT             3.0            376         +              Normal
  05/12/2022 01 PM PDT             3.0            373         -              Normal
  05/12/2022 02 PM PDT             3.0            370         -              Normal
  05/12/2022 03 PM PDT             3.0            380         +              Normal
  05/12/2022 04 PM PDT             3.0            386         +              Normal
  05/12/2022 05 PM PDT             3.0            390         +              Normal
  05/12/2022 06 PM PDT             3.1            397         +              Normal
  05/12/2022 07 PM PDT             3.1            397         0              Normal
  05/12/2022 08 PM PDT             3.0            390         -              Normal
  05/12/2022 09 PM PDT             3.0            390         0              Normal
  05/12/2022 10 PM PDT             3.1            393         +              Normal
  05/12/2022 11 PM PDT             3.1            393         0              Normal
  05/13/2022 12 AM PDT             3.1            404         +              Normal
  05/13/2022 01 AM PDT             3.1            411         +              Normal
  05/13/2022 02 AM PDT             3.1            411         0              Normal
  05/13/2022 03 AM PDT             3.1            414         +              Normal
  05/13/2022 04 AM PDT             3.1            414         0              Normal
  05/13/2022 05 AM PDT             3.1            411         -              Normal
  05/13/2022 06 AM PDT             3.1            411         0              Normal
  05/13/2022 07 AM PDT             3.1            411         0              Normal
  05/13/2022 08 AM PDT             3.1            407         -              Normal
  05/13/2022 09 AM PDT             3.1            400         -              Normal
  05/13/2022 10 AM PDT             3.1            404         +              Normal
  05/13/2022 11 AM PDT             3.1            404         0              Normal
  05/13/2022 12 PM PDT             3.1            397         -              Normal
  05/13/2022 01 PM PDT             3.1            393         -              Normal
  05/13/2022 02 PM PDT             3.1            393         0              Normal
  05/13/2022 03 PM PDT             3.0            386         -              Normal
  05/13/2022 04 PM PDT             3.0            386         0              Normal
  05/13/2022 05 PM PDT             3.0            380         -              Normal
  05/13/2022 06 PM PDT             3.0            383         +              Normal
  05/13/2022 07 PM PDT             3.0            376         -              Normal
  05/13/2022 08 PM PDT             3.0            386         +              Normal
  05/13/2022 09 PM PDT             3.0            386         0              Normal
  05/13/2022 10 PM PDT             3.1            393         +              Normal
  05/13/2022 11 PM PDT             3.1            414         +              Normal
  05/14/2022 12 AM PDT             3.2            440         +              Normal
  05/14/2022 01 AM PDT             3.3            466         +              Normal
  05/14/2022 02 AM PDT             3.3            485         +              Normal
  05/14/2022 03 AM PDT             3.3            497         +              Normal
  05/14/2022 04 AM PDT             3.4            505         +              Normal
  05/14/2022 05 AM PDT             3.4            513         +              Normal
  05/14/2022 06 AM PDT             3.4            509         -              Normal
  05/14/2022 07 AM PDT             3.4            509         0              Normal
  05/14/2022 08 AM PDT             3.4            505         -              Normal
  05/14/2022 09 AM PDT             3.4            521         +              Normal
  05/14/2022 10 AM PDT             3.4            521         0              Normal
  05/14/2022 11 AM PDT             3.4            521         0              Normal
  05/14/2022 12 PM PDT             3.4            517         -              Normal
  05/14/2022 01 PM PDT             3.4            509         -              Normal
  05/14/2022 02 PM PDT             3.4            509         0              Normal
  05/14/2022 03 PM PDT             3.4            505         -              Normal
  05/14/2022 04 PM PDT             3.4            501         -              Normal
  05/14/2022 05 PM PDT             3.4            505         +              Normal
  05/14/2022 06 PM PDT             3.4            501         -              Normal
  05/14/2022 07 PM PDT             3.3            489         -              Normal
  05/14/2022 08 PM PDT             3.4            521         +              Normal
  05/14/2022 09 PM PDT             3.5            558         +              Normal
  05/14/2022 10 PM PDT             3.6            614         +              Normal
  05/14/2022 11 PM PDT             3.8            696         +              Normal
  05/15/2022 12 AM PDT             3.9            749         +              Normal
  05/15/2022 01 AM PDT             4.0            784         +              Normal
  05/15/2022 02 AM PDT             4.0            805         +              Normal
  05/15/2022 03 AM PDT             4.1            852         +              Normal
  05/15/2022 04 AM PDT             4.1            862         +              Normal
  05/15/2022 05 AM PDT             4.1            862         0              Normal
  05/15/2022 06 AM PDT             4.2            873         +              Normal
  05/15/2022 07 AM PDT             4.2            889         +              Normal
  05/15/2022 08 AM PDT             4.2            895         +              Normal
  05/15/2022 09 AM PDT             4.2            884         -              Normal
  05/15/2022 10 AM PDT             4.2            873         -              Normal
  05/15/2022 11 AM PDT             4.1            868         -              Normal
  05/15/2022 12 PM PDT             4.1            847         -              Normal
  05/15/2022 01 PM PDT             4.1            857         +              Normal
  05/15/2022 02 PM PDT             4.1            831         -              Normal
  05/15/2022 03 PM PDT             4.1            826         -              Normal
  05/15/2022 04 PM PDT             4.0            820         -              Normal
  05/15/2022 05 PM PDT             4.0            795         -              Normal
  05/15/2022 06 PM PDT             4.0            784         -              Normal
  05/15/2022 07 PM PDT             4.0            820         +              Normal
  05/15/2022 08 PM PDT             4.1            852         +              Normal
  05/15/2022 09 PM PDT             4.2            928         +              Normal
  05/15/2022 10 PM PDT             4.4            996         +              Normal
  05/15/2022 11 PM PDT             4.5           1061         +              Normal
  05/16/2022 12 AM PDT             4.6           1128         +              Normal
  05/16/2022 01 AM PDT             4.7           1165         +              Normal
  05/16/2022 02 AM PDT             4.7           1204         +              Normal
  05/16/2022 03 AM PDT             4.7           1197         -              Normal
  05/16/2022 04 AM PDT             4.7           1210         +              Normal
  05/16/2022 05 AM PDT             4.7           1216         +              Normal
  05/16/2022 06 AM PDT             4.7           1210         -              Normal
  05/16/2022 07 AM PDT             4.7           1191         -              Normal
  05/16/2022 08 AM PDT             4.7           1165         -              Normal
  05/16/2022 09 AM PDT             4.7           1165         0              Normal
  05/16/2022 10 AM PDT             4.6           1146         -              Normal
  05/16/2022 11 AM PDT             4.6           1109         -              Normal
  05/16/2022 12 PM PDT             4.5           1091         -              Normal
  05/16/2022 01 PM PDT             4.5           1061         -              Normal
  05/16/2022 02 PM PDT             4.4           1031         -              Normal
  05/16/2022 03 PM PDT             4.4            996         -              Normal
  05/16/2022 04 PM PDT             4.4            990         -              Normal
  05/16/2022 05 PM PDT             4.3            967         -              Normal
  05/16/2022 06 PM PDT             4.3            939         -              Normal
  05/16/2022 07 PM PDT             4.3            933         -              Normal
  05/16/2022 08 PM PDT             4.3            945         +              Normal
  05/16/2022 09 PM PDT             4.3            979         +              Normal
  05/16/2022 10 PM PDT             4.5           1067         +              Normal
  05/16/2022 11 PM PDT             4.5           1097         +              Normal
  05/17/2022 12 AM PDT             4.7           1165         +              Normal
  05/17/2022 01 AM PDT             4.7           1172         +              Normal
  05/17/2022 02 AM PDT             4.7           1223         +              Normal
  05/17/2022 03 AM PDT             4.8           1229         +              Normal
  05/17/2022 04 AM PDT             4.7           1216         -              Normal
  05/17/2022 05 AM PDT             4.7           1216         0              Normal
  05/17/2022 06 AM PDT             4.7           1191         -              Normal
  05/17/2022 07 AM PDT             4.6           1159         -              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  05/17/2022 08 AM PDT             4.6           1128                        Normal
  05/17/2022 09 AM PDT             4.5           1097         -              Normal
  05/17/2022 10 AM PDT             4.5           1067         -              Normal
  05/17/2022 11 AM PDT             4.4           1031         -              Normal
  05/17/2022 12 PM PDT             4.4           1008         -              Normal
  05/17/2022 01 PM PDT             4.3            979         -              Normal
  05/17/2022 02 PM PDT             4.3            962         -              Normal
  05/17/2022 03 PM PDT             4.3            950         -              Normal
  05/17/2022 04 PM PDT             4.3            933         -              Normal
  05/17/2022 05 PM PDT             4.3            956         +              Normal
  05/17/2022 06 PM PDT             4.4            996         +              Normal
  05/17/2022 07 PM PDT             4.4           1031         +              Normal
  05/17/2022 08 PM PDT             4.5           1085         +              Normal
  05/17/2022 09 PM PDT             4.6           1122         +              Normal
  05/17/2022 10 PM PDT             4.7           1172         +              Normal
  05/17/2022 11 PM PDT             4.7           1197         +              Normal
  05/18/2022 12 AM PDT             4.7           1210         +              Normal
  05/18/2022 01 AM PDT             4.7           1216         +              Normal
  05/18/2022 02 AM PDT             4.8           1229         +              Normal
  05/18/2022 03 AM PDT             4.8           1229         0              Normal
  05/18/2022 04 AM PDT             4.8           1229         0              Normal
  05/18/2022 05 AM PDT             4.7           1223         -              Normal
  05/18/2022 06 AM PDT             4.7           1204         -              Normal
  05/18/2022 07 AM PDT             4.7           1178         -              Normal
  05/18/2022 08 AM PDT             4.6           1153         -              Normal
  05/18/2022 09 AM PDT             4.6           1122         -              Normal
  05/18/2022 10 AM PDT             4.5           1103         -              Normal
  05/18/2022 11 AM PDT             4.5           1073         -              Normal
  05/18/2022 12 PM PDT             4.5           1055         -              Normal
  05/18/2022 01 PM PDT             4.4           1025         -              Normal
  05/18/2022 02 PM PDT             4.4           1013         -              Normal
  05/18/2022 03 PM PDT             4.4            996         -              Normal
  05/18/2022 04 PM PDT             4.3            984         -              Normal
  05/18/2022 05 PM PDT             4.4           1008         +              Normal
  05/18/2022 06 PM PDT             4.4           1031         +              Normal
  05/18/2022 07 PM PDT             4.5           1067         +              Normal
  05/18/2022 08 PM PDT             4.6           1109         +              Normal
  05/18/2022 09 PM PDT             4.6           1140         +              Normal
  05/18/2022 10 PM PDT             4.7           1178         +              Normal
  05/18/2022 11 PM PDT             4.7           1204         +              Normal
  05/19/2022 12 AM PDT             4.7           1216         +              Normal
  05/19/2022 01 AM PDT             4.7           1223         +              Normal
  05/19/2022 02 AM PDT             4.8           1229         +              Normal
  05/19/2022 03 AM PDT             4.7           1223         -              Normal
  05/19/2022 04 AM PDT             4.7           1216         -              Normal
  05/19/2022 05 AM PDT             4.7           1210         -              Normal
  05/19/2022 06 AM PDT             4.7           1191         -              Normal
  05/19/2022 07 AM PDT             4.7           1165         -              Normal
  05/19/2022 08 AM PDT             4.6           1134         -              Normal
  05/19/2022 09 AM PDT             4.6           1109         -              Normal
  05/19/2022 10 AM PDT             4.5           1091         -              Normal
  05/19/2022 11 AM PDT             4.5           1055         -              Normal
  05/19/2022 12 PM PDT             4.5           1043         -              Normal
  05/19/2022 01 PM PDT             4.4           1013         -              Normal
  05/19/2022 02 PM PDT             4.4           1002         -              Normal
  05/19/2022 03 PM PDT             4.3            984         -              Normal
  05/19/2022 04 PM PDT             4.3            973         -              Normal
  05/19/2022 05 PM PDT             4.4            990         +              Normal
  05/19/2022 06 PM PDT             4.4           1019         +              Normal
  05/19/2022 07 PM PDT             4.5           1049         +              Normal
  05/19/2022 08 PM PDT             4.5           1091         +              Normal
  05/19/2022 09 PM PDT             4.6           1115         +              Normal
  05/19/2022 10 PM PDT             4.6           1153         +              Normal
  05/19/2022 11 PM PDT             4.7           1165         +              Normal
  05/20/2022 12 AM PDT             4.7           1165         0              Normal
  05/20/2022 01 AM PDT             4.7           1165         0              Normal
  05/20/2022 02 AM PDT             4.7           1172         +              Normal
  05/20/2022 03 AM PDT             4.6           1159         -              Normal
  05/20/2022 04 AM PDT             4.6           1153         -              Normal
  05/20/2022 05 AM PDT             4.6           1146         -              Normal
  05/20/2022 06 AM PDT             4.6           1128         -              Normal
  05/20/2022 07 AM PDT             4.5           1097         -              Normal
  05/20/2022 08 AM PDT             4.5           1067         -              Normal
  05/20/2022 09 AM PDT             4.4           1037         -              Normal
  05/20/2022 10 AM PDT             4.4           1013         -              Normal
  05/20/2022 11 AM PDT             4.3            979         -              Normal
  05/20/2022 12 PM PDT             4.3            950         -              Normal
  05/20/2022 01 PM PDT             4.2            917         -              Normal
  05/20/2022 02 PM PDT             4.2            889         -              Normal
  05/20/2022 03 PM PDT             4.1            862         -              Normal
  05/20/2022 04 PM PDT             4.1            841         -              Normal
  05/20/2022 05 PM PDT             4.1            841         0              Normal
  05/20/2022 06 PM PDT             4.1            868         +              Normal
  05/20/2022 07 PM PDT             4.2            889         +              Normal
  05/20/2022 08 PM PDT             4.2            922         +              Normal
  05/20/2022 09 PM PDT             4.3            950         +              Normal
  05/20/2022 10 PM PDT             4.3            979         +              Normal
  05/20/2022 11 PM PDT             4.4            990         +              Normal
  05/21/2022 12 AM PDT             4.4            996         +              Normal
  05/21/2022 01 AM PDT             4.4           1002         +              Normal
  05/21/2022 02 AM PDT             4.4           1002         0              Normal
  05/21/2022 03 AM PDT             4.4           1002         0              Normal
  05/21/2022 04 AM PDT             4.4            996         -              Normal
  05/21/2022 05 AM PDT             4.3            984         -              Normal
  05/21/2022 06 AM PDT             4.3            956         -              Normal
  05/21/2022 07 AM PDT             4.3            933         -              Normal
  05/21/2022 08 AM PDT             4.2            906         -              Normal
  05/21/2022 09 AM PDT             4.2            884         -              Normal
  05/21/2022 10 AM PDT             4.1            857         -              Normal
  05/21/2022 11 AM PDT             4.1            831         -              Normal
  05/21/2022 12 PM PDT             4.0            815         -              Normal
  05/21/2022 01 PM PDT             4.0            795         -              Normal
  05/21/2022 02 PM PDT             4.0            779         -              Normal
  05/21/2022 03 PM PDT             4.0            769         -              Normal
  05/21/2022 04 PM PDT             3.9            754         -              Normal
  05/21/2022 05 PM PDT             3.9            754         0              Normal
  05/21/2022 06 PM PDT             4.0            779         +              Normal
  05/21/2022 07 PM PDT             4.0            795         +              Normal
  05/21/2022 08 PM PDT             4.0            820         +              Normal
  05/21/2022 09 PM PDT             4.1            841         +              Normal
  05/21/2022 10 PM PDT             4.1            862         +              Normal
  05/21/2022 11 PM PDT             4.2            873         +              Normal
  05/22/2022 12 AM PDT             4.2            889         +              Normal
  05/22/2022 01 AM PDT             4.2            906         +              Normal
  05/22/2022 02 AM PDT             4.2            922         +              Normal
  05/22/2022 03 AM PDT             4.3            933         +              Normal
  05/22/2022 04 AM PDT             4.3            945         +              Normal
  05/22/2022 05 AM PDT             4.3            945         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.