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: Feb 05 2026 at 1:21 PM PSTNext Issuance: Feb 06 2026 at 9:00 AM PST
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:  02/05/2026 at 01:21 PM PST
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  02/05/2026 at 05:00 AM PST
# Maximum Observed Stage:                       2.41 Feet
# Maximum Observed Flow:                        196 cfs
#
# Earliest Date & Time of Maximum Forecast:     02/05/2026 at 10:00 PM PST
# Maximum Forecast Stage:                       2.39 Feet
# Maximum Forecast Flow:                        190 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  01/31/2026 01 PM PST            2.22            146                        Normal
  01/31/2026 02 PM PST            2.26            156         +              Normal
  01/31/2026 03 PM PST            2.27            159         +              Normal
  01/31/2026 04 PM PST            2.25            154         -              Normal
  01/31/2026 05 PM PST            2.25            154         0              Normal
  01/31/2026 06 PM PST            2.26            156         +              Normal
  01/31/2026 07 PM PST            2.26            156         0              Normal
  01/31/2026 08 PM PST            2.27            159         +              Normal
  01/31/2026 09 PM PST            2.28            161         +              Normal
  01/31/2026 10 PM PST            2.28            161         0              Normal
  01/31/2026 11 PM PST            2.29            164         +              Normal
  02/01/2026 12 AM PST            2.28            161         -              Normal
  02/01/2026 01 AM PST            2.28            161         0              Normal
  02/01/2026 02 AM PST            2.29            164         +              Normal
  02/01/2026 03 AM PST            2.29            164         0              Normal
  02/01/2026 04 AM PST            2.28            161         -              Normal
  02/01/2026 05 AM PST            2.29            164         +              Normal
  02/01/2026 06 AM PST            2.28            161         -              Normal
  02/01/2026 07 AM PST            2.27            159         -              Normal
  02/01/2026 08 AM PST            2.27            159         0              Normal
  02/01/2026 09 AM PST            2.27            159         0              Normal
  02/01/2026 10 AM PST            2.26            156         -              Normal
  02/01/2026 11 AM PST            2.25            154         -              Normal
  02/01/2026 12 PM PST            2.25            154         0              Normal
  02/01/2026 01 PM PST            2.25            154         0              Normal
  02/01/2026 02 PM PST            2.27            159         +              Normal
  02/01/2026 03 PM PST            2.29            164         +              Normal
  02/01/2026 04 PM PST            2.27            159         -              Normal
  02/01/2026 05 PM PST            2.26            156         -              Normal
  02/01/2026 06 PM PST            2.28            161         +              Normal
  02/01/2026 07 PM PST            2.29            164         +              Normal
  02/01/2026 08 PM PST            2.30            167         +              Normal
  02/01/2026 09 PM PST            2.30            167         0              Normal
  02/01/2026 10 PM PST            2.31            169         +              Normal
  02/01/2026 11 PM PST            2.30            167         -              Normal
  02/02/2026 12 AM PST            2.30            167         0              Normal
  02/02/2026 01 AM PST            2.31            169         +              Normal
  02/02/2026 02 AM PST            2.30            167         -              Normal
  02/02/2026 03 AM PST            2.30            167         0              Normal
  02/02/2026 04 AM PST            2.30            167         0              Normal
  02/02/2026 05 AM PST            2.31            169         +              Normal
  02/02/2026 06 AM PST            2.30            167         -              Normal
  02/02/2026 07 AM PST            2.30            167         0              Normal
  02/02/2026 08 AM PST            2.29            164         -              Normal
  02/02/2026 09 AM PST            2.28            161         -              Normal
  02/02/2026 10 AM PST            2.26            156         -              Normal
  02/02/2026 11 AM PST            2.25            154         -              Normal
  02/02/2026 12 PM PST            2.26            156         +              Normal
  02/02/2026 01 PM PST            2.27            159         +              Normal
  02/02/2026 02 PM PST            2.28            161         +              Normal
  02/02/2026 03 PM PST            2.32            172         +              Normal
  02/02/2026 04 PM PST            2.29            164         -              Normal
  02/02/2026 05 PM PST            2.29            164         0              Normal
  02/02/2026 06 PM PST            2.29            164         0              Normal
  02/02/2026 07 PM PST            2.30            167         +              Normal
  02/02/2026 08 PM PST            2.30            167         0              Normal
  02/02/2026 09 PM PST            2.31            169         +              Normal
  02/02/2026 10 PM PST            2.31            169         0              Normal
  02/02/2026 11 PM PST            2.31            169         0              Normal
  02/03/2026 12 AM PST            2.32            172         +              Normal
  02/03/2026 01 AM PST            2.31            169         -              Normal
  02/03/2026 02 AM PST            2.32            172         +              Normal
  02/03/2026 03 AM PST            2.32            172         0              Normal
  02/03/2026 04 AM PST            2.31            169         -              Normal
  02/03/2026 05 AM PST            2.31            169         0              Normal
  02/03/2026 06 AM PST            2.30            167         -              Normal
  02/03/2026 07 AM PST            2.29            164         -              Normal
  02/03/2026 08 AM PST            2.28            161         -              Normal
  02/03/2026 09 AM PST            2.26            156         -              Normal
  02/03/2026 10 AM PST            2.26            156         0              Normal
  02/03/2026 11 AM PST            2.26            156         0              Normal
  02/03/2026 12 PM PST            2.27            159         +              Normal
  02/03/2026 01 PM PST            2.28            161         +              Normal
  02/03/2026 02 PM PST            2.29            164         +              Normal
  02/03/2026 03 PM PST            2.32            172         +              Normal
  02/03/2026 04 PM PST            2.31            169         -              Normal
  02/03/2026 05 PM PST            2.29            164         -              Normal
  02/03/2026 06 PM PST            2.30            167         +              Normal
  02/03/2026 07 PM PST            2.30            167         0              Normal
  02/03/2026 08 PM PST            2.32            172         +              Normal
  02/03/2026 09 PM PST            2.32            172         0              Normal
  02/03/2026 10 PM PST            2.33            175         +              Normal
  02/03/2026 11 PM PST            2.33            175         0              Normal
  02/04/2026 12 AM PST            2.34            177         +              Normal
  02/04/2026 01 AM PST            2.34            177         0              Normal
  02/04/2026 02 AM PST            2.33            175         -              Normal
  02/04/2026 03 AM PST            2.34            177         +              Normal
  02/04/2026 04 AM PST            2.35            180         +              Normal
  02/04/2026 05 AM PST            2.35            180         0              Normal
  02/04/2026 06 AM PST            2.34            177         -              Normal
  02/04/2026 07 AM PST            2.34            177         0              Normal
  02/04/2026 08 AM PST            2.32            172         -              Normal
  02/04/2026 09 AM PST            2.30            167         -              Normal
  02/04/2026 10 AM PST            2.29            164         -              Normal
  02/04/2026 11 AM PST            2.29            164         0              Normal
  02/04/2026 12 PM PST            2.30            167         +              Normal
  02/04/2026 01 PM PST            2.30            167         0              Normal
  02/04/2026 02 PM PST            2.35            180         +              Normal
  02/04/2026 03 PM PST            2.35            180         0              Normal
  02/04/2026 04 PM PST            2.34            177         -              Normal
  02/04/2026 05 PM PST            2.33            175         -              Normal
  02/04/2026 06 PM PST            2.35            180         +              Normal
  02/04/2026 07 PM PST            2.35            180         0              Normal
  02/04/2026 08 PM PST            2.36            183         +              Normal
  02/04/2026 09 PM PST            2.37            185         +              Normal
  02/04/2026 10 PM PST            2.37            185         0              Normal
  02/04/2026 11 PM PST            2.38            188         +              Normal
  02/05/2026 12 AM PST            2.38            188         0              Normal
  02/05/2026 01 AM PST            2.39            190         +              Normal
  02/05/2026 02 AM PST            2.39            190         0              Normal
  02/05/2026 03 AM PST            2.40            193         +              Normal
  02/05/2026 04 AM PST            2.39            190         -              Normal
  02/05/2026 05 AM PST            2.41            196         +              Normal
  02/05/2026 06 AM PST            2.39            190         -              Normal
  02/05/2026 07 AM PST            2.39            190         0              Normal
  02/05/2026 08 AM PST            2.39            190         0              Normal
  02/05/2026 09 AM PST            2.39            190         0              Normal
  02/05/2026 10 AM PST            2.37            185         -              Normal
  02/05/2026 11 AM PST            2.38            188         +              Normal
  02/05/2026 12 PM PST            2.38            188         0              Normal
  02/05/2026 01 PM PST            2.37            185         -              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  02/05/2026 02 PM PST            2.37            185                        Normal
  02/05/2026 03 PM PST            2.37            185         0              Normal
  02/05/2026 04 PM PST            2.37            185         0              Normal
  02/05/2026 05 PM PST            2.37            185         0              Normal
  02/05/2026 06 PM PST            2.37            185         0              Normal
  02/05/2026 07 PM PST            2.38            188         +              Normal
  02/05/2026 08 PM PST            2.38            188         0              Normal
  02/05/2026 09 PM PST            2.38            188         0              Normal
  02/05/2026 10 PM PST            2.39            190         +              Normal
  02/05/2026 11 PM PST            2.39            190         0              Normal
  02/06/2026 12 AM PST            2.39            190         0              Normal
  02/06/2026 01 AM PST            2.39            190         0              Normal
  02/06/2026 02 AM PST            2.39            190         0              Normal
  02/06/2026 03 AM PST            2.39            190         0              Normal
  02/06/2026 04 AM PST            2.39            190         0              Normal
  02/06/2026 05 AM PST            2.39            190         0              Normal
  02/06/2026 06 AM PST            2.39            190         0              Normal
  02/06/2026 07 AM PST            2.38            188         -              Normal
  02/06/2026 08 AM PST            2.38            188         0              Normal
  02/06/2026 09 AM PST            2.38            188         0              Normal
  02/06/2026 10 AM PST            2.37            185         -              Normal
  02/06/2026 11 AM PST            2.37            185         0              Normal
  02/06/2026 12 PM PST            2.36            183         -              Normal
  02/06/2026 01 PM PST            2.36            183         0              Normal
  02/06/2026 02 PM PST            2.36            183         0              Normal
  02/06/2026 03 PM PST            2.35            180         -              Normal
  02/06/2026 04 PM PST            2.35            180         0              Normal
  02/06/2026 05 PM PST            2.35            180         0              Normal
  02/06/2026 06 PM PST            2.35            180         0              Normal
  02/06/2026 07 PM PST            2.35            180         0              Normal
  02/06/2026 08 PM PST            2.35            180         0              Normal
  02/06/2026 09 PM PST            2.35            180         0              Normal
  02/06/2026 10 PM PST            2.35            180         0              Normal
  02/06/2026 11 PM PST            2.36            183         +              Normal
  02/07/2026 12 AM PST            2.35            180         -              Normal
  02/07/2026 01 AM PST            2.35            180         0              Normal
  02/07/2026 02 AM PST            2.35            180         0              Normal
  02/07/2026 03 AM PST            2.35            180         0              Normal
  02/07/2026 04 AM PST            2.34            177         -              Normal
  02/07/2026 05 AM PST            2.34            177         0              Normal
  02/07/2026 06 AM PST            2.34            177         0              Normal
  02/07/2026 07 AM PST            2.33            175         -              Normal
  02/07/2026 08 AM PST            2.33            175         0              Normal
  02/07/2026 09 AM PST            2.33            175         0              Normal
  02/07/2026 10 AM PST            2.32            172         -              Normal
  02/07/2026 11 AM PST            2.32            172         0              Normal
  02/07/2026 12 PM PST            2.31            169         -              Normal
  02/07/2026 01 PM PST            2.31            169         0              Normal
  02/07/2026 02 PM PST            2.30            167         -              Normal
  02/07/2026 03 PM PST            2.30            167         0              Normal
  02/07/2026 04 PM PST            2.30            167         0              Normal
  02/07/2026 05 PM PST            2.29            164         -              Normal
  02/07/2026 06 PM PST            2.29            164         0              Normal
  02/07/2026 07 PM PST            2.29            164         0              Normal
  02/07/2026 08 PM PST            2.29            164         0              Normal
  02/07/2026 09 PM PST            2.30            167         +              Normal
  02/07/2026 10 PM PST            2.30            167         0              Normal
  02/07/2026 11 PM PST            2.30            167         0              Normal
  02/08/2026 12 AM PST            2.30            167         0              Normal
  02/08/2026 01 AM PST            2.30            167         0              Normal
  02/08/2026 02 AM PST            2.30            167         0              Normal
  02/08/2026 03 AM PST            2.30            167         0              Normal
  02/08/2026 04 AM PST            2.30            167         0              Normal
  02/08/2026 05 AM PST            2.30            167         0              Normal
  02/08/2026 06 AM PST            2.30            167         0              Normal
  02/08/2026 07 AM PST            2.30            167         0              Normal
  02/08/2026 08 AM PST            2.30            167         0              Normal
  02/08/2026 09 AM PST            2.30            167         0              Normal
  02/08/2026 10 AM PST            2.29            164         -              Normal
  02/08/2026 11 AM PST            2.29            164         0              Normal
  02/08/2026 12 PM PST            2.29            164         0              Normal
  02/08/2026 01 PM PST            2.29            164         0              Normal
  02/08/2026 02 PM PST            2.29            164         0              Normal
  02/08/2026 03 PM PST            2.28            161         -              Normal
  02/08/2026 04 PM PST            2.28            161         0              Normal
  02/08/2026 05 PM PST            2.29            164         +              Normal
  02/08/2026 06 PM PST            2.29            164         0              Normal
  02/08/2026 07 PM PST            2.29            164         0              Normal
  02/08/2026 08 PM PST            2.29            164         0              Normal
  02/08/2026 09 PM PST            2.30            167         +              Normal
  02/08/2026 10 PM PST            2.30            167         0              Normal
  02/08/2026 11 PM PST            2.31            169         +              Normal
  02/09/2026 12 AM PST            2.31            169         0              Normal
  02/09/2026 01 AM PST            2.31            169         0              Normal
  02/09/2026 02 AM PST            2.31            169         0              Normal
  02/09/2026 03 AM PST            2.32            172         +              Normal
  02/09/2026 04 AM PST            2.32            172         0              Normal
  02/09/2026 05 AM PST            2.32            172         0              Normal
  02/09/2026 06 AM PST            2.32            172         0              Normal
  02/09/2026 07 AM PST            2.32            172         0              Normal
  02/09/2026 08 AM PST            2.32            172         0              Normal
  02/09/2026 09 AM PST            2.32            172         0              Normal
  02/09/2026 10 AM PST            2.32            172         0              Normal
  02/09/2026 11 AM PST            2.31            169         -              Normal
  02/09/2026 12 PM PST            2.31            169         0              Normal
  02/09/2026 01 PM PST            2.31            169         0              Normal
  02/09/2026 02 PM PST            2.31            169         0              Normal
  02/09/2026 03 PM PST            2.31            169         0              Normal
  02/09/2026 04 PM PST            2.31            169         0              Normal
  02/09/2026 05 PM PST            2.31            169         0              Normal
  02/09/2026 06 PM PST            2.31            169         0              Normal
  02/09/2026 07 PM PST            2.31            169         0              Normal
  02/09/2026 08 PM PST            2.32            172         +              Normal
  02/09/2026 09 PM PST            2.32            172         0              Normal
  02/09/2026 10 PM PST            2.32            172         0              Normal
  02/09/2026 11 PM PST            2.33            175         +              Normal
  02/10/2026 12 AM PST            2.33            175         0              Normal
  02/10/2026 01 AM PST            2.33            175         0              Normal
  02/10/2026 02 AM PST            2.33            175         0              Normal
  02/10/2026 03 AM PST            2.34            177         +              Normal
  02/10/2026 04 AM PST            2.34            177         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.