MERCED RIVER - YOSEMITE NP AT HAPPY ISLES (HPIC1)
Latitude: 37.73º NLongitude: 119.56º WElevation: 4017 FeetForecast Type: Official Location
Location: Mariposa County in CaliforniaBulletin Group: San JoaquinRiver Group: San Joaquin
Issuance Time: Aug 01 2026 at 8:06 AM PDTNext Issuance: Aug 02 2026 at 9:00 AM PDT
Action/Monitor: N/A Minor Flood: 7.5 FeetModerate Flood: 10.0 FeetMajor Flood: 13.27 Feet

# Tabular Observed and Forecast Hydrograph Information
#
# Location: Merced River - Yosemite NP at Happy Isles (HPIC1)
#
# File Generation Time:  08/01/2026 at 08:06 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  07/27/2026 at 09:00 AM PDT
# Maximum Observed Stage:                       1.74 Feet
# Maximum Observed Flow:                        67 cfs
#
# Earliest Date & Time of Maximum Forecast:     08/06/2026 at 02:00 AM PDT
# Maximum Forecast Stage:                       1.48 Feet
# Maximum Forecast Flow:                        43 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  07/27/2026 08 AM PDT            1.74             67                        Normal
  07/27/2026 09 AM PDT            1.74             67         0              Normal
  07/27/2026 10 AM PDT            1.73             66         -              Normal
  07/27/2026 11 AM PDT            1.73             66         0              Normal
  07/27/2026 12 PM PDT            1.73             66         0              Normal
  07/27/2026 01 PM PDT            1.72             65         -              Normal
  07/27/2026 02 PM PDT            1.72             65         0              Normal
  07/27/2026 03 PM PDT            1.72             65         0              Normal
  07/27/2026 04 PM PDT            1.71             64         -              Normal
  07/27/2026 05 PM PDT            1.72             65         +              Normal
  07/27/2026 06 PM PDT            1.71             64         -              Normal
  07/27/2026 07 PM PDT            1.71             64         0              Normal
  07/27/2026 08 PM PDT            1.71             64         0              Normal
  07/27/2026 09 PM PDT            1.71             64         0              Normal
  07/27/2026 10 PM PDT            1.70             63         -              Normal
  07/27/2026 11 PM PDT            1.70             63         0              Normal
  07/28/2026 12 AM PDT            1.70             63         0              Normal
  07/28/2026 01 AM PDT            1.69             62         -              Normal
  07/28/2026 02 AM PDT            1.69             62         0              Normal
  07/28/2026 03 AM PDT            1.69             62         0              Normal
  07/28/2026 04 AM PDT            1.69             62         0              Normal
  07/28/2026 05 AM PDT            1.69             62         0              Normal
  07/28/2026 06 AM PDT            1.68             61         -              Normal
  07/28/2026 07 AM PDT            1.69             62         +              Normal
  07/28/2026 08 AM PDT            1.68             61         -              Normal
  07/28/2026 09 AM PDT            1.68             61         0              Normal
  07/28/2026 10 AM PDT            1.68             61         0              Normal
  07/28/2026 11 AM PDT            1.68             61         0              Normal
  07/28/2026 12 PM PDT            1.67             60         -              Normal
  07/28/2026 01 PM PDT            1.66             59         -              Normal
  07/28/2026 02 PM PDT            1.66             59         0              Normal
  07/28/2026 03 PM PDT            1.66             59         0              Normal
  07/28/2026 04 PM PDT            1.66             59         0              Normal
  07/28/2026 05 PM PDT            1.66             59         0              Normal
  07/28/2026 06 PM PDT            1.65             58         -              Normal
  07/28/2026 07 PM PDT            1.64             57         -              Normal
  07/28/2026 08 PM PDT            1.64             57         0              Normal
  07/28/2026 09 PM PDT            1.64             57         0              Normal
  07/28/2026 10 PM PDT            1.64             57         0              Normal
  07/28/2026 11 PM PDT            1.64             57         0              Normal
  07/29/2026 12 AM PDT            1.63             56         -              Normal
  07/29/2026 01 AM PDT            1.63             56         0              Normal
  07/29/2026 02 AM PDT            1.62             55         -              Normal
  07/29/2026 03 AM PDT            1.62             55         0              Normal
  07/29/2026 04 AM PDT            1.62             55         0              Normal
  07/29/2026 05 AM PDT            1.62             55         0              Normal
  07/29/2026 06 AM PDT            1.61             54         -              Normal
  07/29/2026 07 AM PDT            1.61             54         0              Normal
  07/29/2026 08 AM PDT            1.61             54         0              Normal
  07/29/2026 09 AM PDT            1.61             54         0              Normal
  07/29/2026 10 AM PDT            1.61             54         0              Normal
  07/29/2026 11 AM PDT            1.60             53         -              Normal
  07/29/2026 12 PM PDT            1.60             53         0              Normal
  07/29/2026 01 PM PDT            1.60             53         0              Normal
  07/29/2026 02 PM PDT            1.59             52         -              Normal
  07/29/2026 03 PM PDT            1.59             52         0              Normal
  07/29/2026 04 PM PDT            1.58             52         -              Normal
  07/29/2026 05 PM PDT            1.59             52         +              Normal
  07/29/2026 06 PM PDT            1.58             52         -              Normal
  07/29/2026 07 PM PDT            1.58             52         0              Normal
  07/29/2026 08 PM PDT            1.58             52         0              Normal
  07/29/2026 09 PM PDT            1.58             52         0              Normal
  07/29/2026 10 PM PDT            1.57             51         -              Normal
  07/29/2026 11 PM PDT            1.57             51         0              Normal
  07/30/2026 12 AM PDT            1.56             50         -              Normal
  07/30/2026 01 AM PDT            1.57             51         +              Normal
  07/30/2026 02 AM PDT            1.56             50         -              Normal
  07/30/2026 03 AM PDT            1.56             50         0              Normal
  07/30/2026 04 AM PDT            1.56             50         0              Normal
  07/30/2026 05 AM PDT            1.55             49         -              Normal
  07/30/2026 06 AM PDT            1.55             49         0              Normal
  07/30/2026 07 AM PDT            1.55             49         0              Normal
  07/30/2026 08 AM PDT            1.54             48         -              Normal
  07/30/2026 09 AM PDT            1.54             48         0              Normal
  07/30/2026 10 AM PDT            1.54             48         0              Normal
  07/30/2026 11 AM PDT            1.54             48         0              Normal
  07/30/2026 12 PM PDT            1.54             48         0              Normal
  07/30/2026 01 PM PDT            1.53             47         -              Normal
  07/30/2026 02 PM PDT            1.53             47         0              Normal
  07/30/2026 03 PM PDT            1.52             46         -              Normal
  07/30/2026 04 PM PDT            1.53             47         +              Normal
  07/30/2026 05 PM PDT            1.51             46         -              Normal
  07/30/2026 06 PM PDT            1.52             46         +              Normal
  07/30/2026 07 PM PDT            1.51             46         -              Normal
  07/30/2026 08 PM PDT            1.51             46         0              Normal
  07/30/2026 09 PM PDT            1.51             46         0              Normal
  07/30/2026 10 PM PDT            1.51             46         0              Normal
  07/30/2026 11 PM PDT            1.50             45         -              Normal
  07/31/2026 12 AM PDT            1.50             45         0              Normal
  07/31/2026 01 AM PDT            1.50             45         0              Normal
  07/31/2026 02 AM PDT            1.50             45         0              Normal
  07/31/2026 03 AM PDT            1.49             44         -              Normal
  07/31/2026 04 AM PDT            1.49             44         0              Normal
  07/31/2026 05 AM PDT            1.49             44         0              Normal
  07/31/2026 06 AM PDT            1.48             43         -              Normal
  07/31/2026 07 AM PDT            1.49             44         +              Normal
  07/31/2026 08 AM PDT            1.48             43         -              Normal
  07/31/2026 09 AM PDT            1.48             43         0              Normal
  07/31/2026 10 AM PDT            1.48             43         0              Normal
  07/31/2026 11 AM PDT            1.48             43         0              Normal
  07/31/2026 12 PM PDT            1.47             42         -              Normal
  07/31/2026 01 PM PDT            1.47             42         0              Normal
  07/31/2026 02 PM PDT            1.46             42         -              Normal
  07/31/2026 03 PM PDT            1.46             42         0              Normal
  07/31/2026 04 PM PDT            1.47             42         +              Normal
  07/31/2026 05 PM PDT            1.46             42         -              Normal
  07/31/2026 06 PM PDT            1.46             42         0              Normal
  07/31/2026 07 PM PDT            1.46             42         0              Normal
  07/31/2026 08 PM PDT            1.45             41         -              Normal
  07/31/2026 09 PM PDT            1.45             41         0              Normal
  07/31/2026 10 PM PDT            1.45             41         0              Normal
  07/31/2026 11 PM PDT            1.45             41         0              Normal
  08/01/2026 12 AM PDT            1.44             40         -              Normal
  08/01/2026 01 AM PDT            1.44             40         0              Normal
  08/01/2026 02 AM PDT            1.44             40         0              Normal
  08/01/2026 03 AM PDT            1.44             40         0              Normal
  08/01/2026 04 AM PDT            1.44             40         0              Normal
  08/01/2026 05 AM PDT            1.44             40         0              Normal
  08/01/2026 06 AM PDT            1.44             40         0              Normal
  08/01/2026 07 AM PDT            1.44             40         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  08/01/2026 08 AM PDT            1.44             40                        Normal
  08/01/2026 09 AM PDT            1.44             40         0              Normal
  08/01/2026 10 AM PDT            1.44             40         0              Normal
  08/01/2026 11 AM PDT            1.43             39         -              Normal
  08/01/2026 12 PM PDT            1.43             39         0              Normal
  08/01/2026 01 PM PDT            1.43             39         0              Normal
  08/01/2026 02 PM PDT            1.43             39         0              Normal
  08/01/2026 03 PM PDT            1.43             39         0              Normal
  08/01/2026 04 PM PDT            1.43             39         0              Normal
  08/01/2026 05 PM PDT            1.43             39         0              Normal
  08/01/2026 06 PM PDT            1.43             39         0              Normal
  08/01/2026 07 PM PDT            1.43             39         0              Normal
  08/01/2026 08 PM PDT            1.43             39         0              Normal
  08/01/2026 09 PM PDT            1.43             39         0              Normal
  08/01/2026 10 PM PDT            1.44             40         +              Normal
  08/01/2026 11 PM PDT            1.44             40         0              Normal
  08/02/2026 12 AM PDT            1.44             40         0              Normal
  08/02/2026 01 AM PDT            1.44             40         0              Normal
  08/02/2026 02 AM PDT            1.44             40         0              Normal
  08/02/2026 03 AM PDT            1.44             40         0              Normal
  08/02/2026 04 AM PDT            1.44             40         0              Normal
  08/02/2026 05 AM PDT            1.44             40         0              Normal
  08/02/2026 06 AM PDT            1.44             40         0              Normal
  08/02/2026 07 AM PDT            1.44             40         0              Normal
  08/02/2026 08 AM PDT            1.44             40         0              Normal
  08/02/2026 09 AM PDT            1.44             40         0              Normal
  08/02/2026 10 AM PDT            1.44             40         0              Normal
  08/02/2026 11 AM PDT            1.44             40         0              Normal
  08/02/2026 12 PM PDT            1.44             40         0              Normal
  08/02/2026 01 PM PDT            1.44             40         0              Normal
  08/02/2026 02 PM PDT            1.44             40         0              Normal
  08/02/2026 03 PM PDT            1.43             39         -              Normal
  08/02/2026 04 PM PDT            1.43             39         0              Normal
  08/02/2026 05 PM PDT            1.43             39         0              Normal
  08/02/2026 06 PM PDT            1.43             39         0              Normal
  08/02/2026 07 PM PDT            1.44             40         +              Normal
  08/02/2026 08 PM PDT            1.44             40         0              Normal
  08/02/2026 09 PM PDT            1.44             40         0              Normal
  08/02/2026 10 PM PDT            1.44             40         0              Normal
  08/02/2026 11 PM PDT            1.44             40         0              Normal
  08/03/2026 12 AM PDT            1.45             41         +              Normal
  08/03/2026 01 AM PDT            1.45             41         0              Normal
  08/03/2026 02 AM PDT            1.45             41         0              Normal
  08/03/2026 03 AM PDT            1.45             41         0              Normal
  08/03/2026 04 AM PDT            1.45             41         0              Normal
  08/03/2026 05 AM PDT            1.45             41         0              Normal
  08/03/2026 06 AM PDT            1.45             41         0              Normal
  08/03/2026 07 AM PDT            1.45             41         0              Normal
  08/03/2026 08 AM PDT            1.45             41         0              Normal
  08/03/2026 09 AM PDT            1.45             41         0              Normal
  08/03/2026 10 AM PDT            1.45             41         0              Normal
  08/03/2026 11 AM PDT            1.45             41         0              Normal
  08/03/2026 12 PM PDT            1.45             41         0              Normal
  08/03/2026 01 PM PDT            1.44             40         -              Normal
  08/03/2026 02 PM PDT            1.44             40         0              Normal
  08/03/2026 03 PM PDT            1.44             40         0              Normal
  08/03/2026 04 PM PDT            1.44             40         0              Normal
  08/03/2026 05 PM PDT            1.44             40         0              Normal
  08/03/2026 06 PM PDT            1.44             40         0              Normal
  08/03/2026 07 PM PDT            1.44             40         0              Normal
  08/03/2026 08 PM PDT            1.45             41         +              Normal
  08/03/2026 09 PM PDT            1.45             41         0              Normal
  08/03/2026 10 PM PDT            1.45             41         0              Normal
  08/03/2026 11 PM PDT            1.45             41         0              Normal
  08/04/2026 12 AM PDT            1.45             41         0              Normal
  08/04/2026 01 AM PDT            1.46             42         +              Normal
  08/04/2026 02 AM PDT            1.46             42         0              Normal
  08/04/2026 03 AM PDT            1.46             42         0              Normal
  08/04/2026 04 AM PDT            1.46             42         0              Normal
  08/04/2026 05 AM PDT            1.46             42         0              Normal
  08/04/2026 06 AM PDT            1.46             42         0              Normal
  08/04/2026 07 AM PDT            1.46             42         0              Normal
  08/04/2026 08 AM PDT            1.46             42         0              Normal
  08/04/2026 09 AM PDT            1.46             42         0              Normal
  08/04/2026 10 AM PDT            1.46             42         0              Normal
  08/04/2026 11 AM PDT            1.45             41         -              Normal
  08/04/2026 12 PM PDT            1.45             41         0              Normal
  08/04/2026 01 PM PDT            1.45             41         0              Normal
  08/04/2026 02 PM PDT            1.45             41         0              Normal
  08/04/2026 03 PM PDT            1.45             41         0              Normal
  08/04/2026 04 PM PDT            1.45             41         0              Normal
  08/04/2026 05 PM PDT            1.45             41         0              Normal
  08/04/2026 06 PM PDT            1.45             41         0              Normal
  08/04/2026 07 PM PDT            1.45             41         0              Normal
  08/04/2026 08 PM PDT            1.46             42         +              Normal
  08/04/2026 09 PM PDT            1.46             42         0              Normal
  08/04/2026 10 PM PDT            1.46             42         0              Normal
  08/04/2026 11 PM PDT            1.46             42         0              Normal
  08/05/2026 12 AM PDT            1.46             42         0              Normal
  08/05/2026 01 AM PDT            1.46             42         0              Normal
  08/05/2026 02 AM PDT            1.47             42         +              Normal
  08/05/2026 03 AM PDT            1.47             42         0              Normal
  08/05/2026 04 AM PDT            1.47             42         0              Normal
  08/05/2026 05 AM PDT            1.47             42         0              Normal
  08/05/2026 06 AM PDT            1.47             42         0              Normal
  08/05/2026 07 AM PDT            1.47             42         0              Normal
  08/05/2026 08 AM PDT            1.47             42         0              Normal
  08/05/2026 09 AM PDT            1.47             42         0              Normal
  08/05/2026 10 AM PDT            1.47             42         0              Normal
  08/05/2026 11 AM PDT            1.46             42         -              Normal
  08/05/2026 12 PM PDT            1.46             42         0              Normal
  08/05/2026 01 PM PDT            1.46             42         0              Normal
  08/05/2026 02 PM PDT            1.46             42         0              Normal
  08/05/2026 03 PM PDT            1.46             42         0              Normal
  08/05/2026 04 PM PDT            1.46             42         0              Normal
  08/05/2026 05 PM PDT            1.46             42         0              Normal
  08/05/2026 06 PM PDT            1.46             42         0              Normal
  08/05/2026 07 PM PDT            1.46             42         0              Normal
  08/05/2026 08 PM PDT            1.47             42         +              Normal
  08/05/2026 09 PM PDT            1.47             42         0              Normal
  08/05/2026 10 PM PDT            1.47             42         0              Normal
  08/05/2026 11 PM PDT            1.47             42         0              Normal
  08/06/2026 12 AM PDT            1.47             42         0              Normal
  08/06/2026 01 AM PDT            1.47             42         0              Normal
  08/06/2026 02 AM PDT            1.48             43         +              Normal
  08/06/2026 03 AM PDT            1.48             43         0              Normal
  08/06/2026 04 AM PDT            1.48             43         0              Normal
  08/06/2026 05 AM PDT            1.48             43         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.