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: May 31 2023 at 8:46 AM PDTNext Issuance: Jun 01 2023 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:  05/31/2023 at 08:48 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  05/30/2023 at 02:00 AM PDT
# Maximum Observed Stage:                       7.4 Feet
# Maximum Observed Flow:                        3655 cfs
#
# Earliest Date & Time of Maximum Forecast:     06/05/2023 at 03:00 AM PDT
# Maximum Forecast Stage:                       7.9 Feet
# Maximum Forecast Flow:                        4238 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  05/26/2023 08 AM PDT             7.2           3386                        Normal
  05/26/2023 09 AM PDT             7.1           3273         -              Normal
  05/26/2023 10 AM PDT             7.0           3184         -              Normal
  05/26/2023 11 AM PDT             7.0           3140         -              Normal
  05/26/2023 12 PM PDT             6.9           3108         -              Normal
  05/26/2023 01 PM PDT             6.9           3097         -              Normal
  05/26/2023 02 PM PDT             6.8           3000         -              Normal
  05/26/2023 03 PM PDT             6.8           3032         +              Normal
  05/26/2023 04 PM PDT             6.8           2979         -              Normal
  05/26/2023 05 PM PDT             6.9           3043         +              Normal
  05/26/2023 06 PM PDT             7.0           3140         +              Normal
  05/26/2023 07 PM PDT             7.0           3184         +              Normal
  05/26/2023 08 PM PDT             7.0           3251         +              Normal
  05/26/2023 09 PM PDT             7.1           3318         +              Normal
  05/26/2023 10 PM PDT             7.1           3307         -              Normal
  05/26/2023 11 PM PDT             7.0           3229         -              Normal
  05/27/2023 12 AM PDT             7.0           3218         -              Normal
  05/27/2023 01 AM PDT             7.0           3240         +              Normal
  05/27/2023 02 AM PDT             7.0           3240         0              Normal
  05/27/2023 03 AM PDT             7.0           3151         -              Normal
  05/27/2023 04 AM PDT             6.9           3130         -              Normal
  05/27/2023 05 AM PDT             6.9           3097         -              Normal
  05/27/2023 06 AM PDT             6.9           3064         -              Normal
  05/27/2023 07 AM PDT             6.8           2989         -              Normal
  05/27/2023 08 AM PDT             6.8           2947         -              Normal
  05/27/2023 09 AM PDT             6.8           2936         -              Normal
  05/27/2023 10 AM PDT             6.7           2853         -              Normal
  05/27/2023 11 AM PDT             6.6           2801         -              Normal
  05/27/2023 12 PM PDT             6.5           2719         -              Normal
  05/27/2023 01 PM PDT             6.6           2770         +              Normal
  05/27/2023 02 PM PDT             6.5           2699         -              Normal
  05/27/2023 03 PM PDT             6.5           2719         +              Normal
  05/27/2023 04 PM PDT             6.6           2770         +              Normal
  05/27/2023 05 PM PDT             6.6           2811         +              Normal
  05/27/2023 06 PM PDT             6.7           2884         +              Normal
  05/27/2023 07 PM PDT             6.9           3043         +              Normal
  05/27/2023 08 PM PDT             6.9           3119         +              Normal
  05/27/2023 09 PM PDT             7.0           3218         +              Normal
  05/27/2023 10 PM PDT             7.0           3240         +              Normal
  05/27/2023 11 PM PDT             7.0           3251         +              Normal
  05/28/2023 12 AM PDT             7.2           3364         +              Normal
  05/28/2023 01 AM PDT             7.1           3341         -              Normal
  05/28/2023 02 AM PDT             7.2           3386         +              Normal
  05/28/2023 03 AM PDT             7.2           3375         -              Normal
  05/28/2023 04 AM PDT             7.1           3296         -              Normal
  05/28/2023 05 AM PDT             7.1           3273         -              Normal
  05/28/2023 06 AM PDT             7.1           3296         +              Normal
  05/28/2023 07 AM PDT             7.1           3273         -              Normal
  05/28/2023 08 AM PDT             7.0           3251         -              Normal
  05/28/2023 09 AM PDT             7.0           3162         -              Normal
  05/28/2023 10 AM PDT             6.9           3097         -              Normal
  05/28/2023 11 AM PDT             6.9           3064         -              Normal
  05/28/2023 12 PM PDT             6.9           3054         -              Normal
  05/28/2023 01 PM PDT             6.8           3011         -              Normal
  05/28/2023 02 PM PDT             6.7           2905         -              Normal
  05/28/2023 03 PM PDT             6.7           2915         +              Normal
  05/28/2023 04 PM PDT             6.8           2926         +              Normal
  05/28/2023 05 PM PDT             6.8           2936         +              Normal
  05/28/2023 06 PM PDT             6.8           3011         +              Normal
  05/28/2023 07 PM PDT             6.9           3075         +              Normal
  05/28/2023 08 PM PDT             6.9           3097         +              Normal
  05/28/2023 09 PM PDT             7.0           3151         +              Normal
  05/28/2023 10 PM PDT             7.0           3229         +              Normal
  05/28/2023 11 PM PDT             7.0           3173         -              Normal
  05/29/2023 12 AM PDT             7.0           3240         +              Normal
  05/29/2023 01 AM PDT             7.0           3218         -              Normal
  05/29/2023 02 AM PDT             7.1           3273         +              Normal
  05/29/2023 03 AM PDT             7.0           3240         -              Normal
  05/29/2023 04 AM PDT             7.0           3240         0              Normal
  05/29/2023 05 AM PDT             7.0           3207         -              Normal
  05/29/2023 06 AM PDT             7.0           3140         -              Normal
  05/29/2023 07 AM PDT             7.0           3140         0              Normal
  05/29/2023 08 AM PDT             7.0           3151         +              Normal
  05/29/2023 09 AM PDT             6.9           3086         -              Normal
  05/29/2023 10 AM PDT             6.8           3032         -              Normal
  05/29/2023 11 AM PDT             6.8           2968         -              Normal
  05/29/2023 12 PM PDT             6.8           2947         -              Normal
  05/29/2023 01 PM PDT             6.8           2936         -              Normal
  05/29/2023 02 PM PDT             6.8           2926         -              Normal
  05/29/2023 03 PM PDT             6.7           2832         -              Normal
  05/29/2023 04 PM PDT             6.7           2884         +              Normal
  05/29/2023 05 PM PDT             6.8           2947         +              Normal
  05/29/2023 06 PM PDT             6.9           3086         +              Normal
  05/29/2023 07 PM PDT             7.0           3240         +              Normal
  05/29/2023 08 PM PDT             7.1           3352         +              Normal
  05/29/2023 09 PM PDT             7.2           3421         +              Normal
  05/29/2023 10 PM PDT             7.3           3490         +              Normal
  05/29/2023 11 PM PDT             7.3           3584         +              Normal
  05/30/2023 12 AM PDT             7.3           3595         +              Normal
  05/30/2023 01 AM PDT             7.4           3619         +              Normal
  05/30/2023 02 AM PDT             7.4           3655         +              Normal
  05/30/2023 03 AM PDT             7.4           3607         -              Normal
  05/30/2023 04 AM PDT             7.3           3584         -              Normal
  05/30/2023 05 AM PDT             7.4           3643         +              Normal
  05/30/2023 06 AM PDT             7.3           3537         -              Normal
  05/30/2023 07 AM PDT             7.3           3525         -              Normal
  05/30/2023 08 AM PDT             7.3           3513         -              Normal
  05/30/2023 09 AM PDT             7.2           3432         -              Normal
  05/30/2023 10 AM PDT             7.1           3352         -              Normal
  05/30/2023 11 AM PDT             7.1           3318         -              Normal
  05/30/2023 12 PM PDT             7.0           3229         -              Normal
  05/30/2023 01 PM PDT             7.0           3140         -              Normal
  05/30/2023 02 PM PDT             6.9           3075         -              Normal
  05/30/2023 03 PM PDT             6.9           3064         -              Normal
  05/30/2023 04 PM PDT             6.8           3032         -              Normal
  05/30/2023 05 PM PDT             6.9           3043         +              Normal
  05/30/2023 06 PM PDT             6.9           3086         +              Normal
  05/30/2023 07 PM PDT             6.9           3097         +              Normal
  05/30/2023 08 PM PDT             7.0           3195         +              Normal
  05/30/2023 09 PM PDT             7.1           3285         +              Normal
  05/30/2023 10 PM PDT             7.1           3273         -              Normal
  05/30/2023 11 PM PDT             7.1           3318         +              Normal
  05/31/2023 12 AM PDT             7.2           3409         +              Normal
  05/31/2023 01 AM PDT             7.2           3444         +              Normal
  05/31/2023 02 AM PDT             7.2           3444         0              Normal
  05/31/2023 03 AM PDT             7.2           3467         +              Normal
  05/31/2023 04 AM PDT             7.2           3467         0              Normal
  05/31/2023 05 AM PDT             7.2           3455         -              Normal
  05/31/2023 06 AM PDT             7.2           3386         -              Normal
  05/31/2023 07 AM PDT             7.1           3296         -              Normal
  05/31/2023 08 AM PDT             7.0           3218         -              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  05/31/2023 09 AM PDT             6.9           3130                        Normal
  05/31/2023 10 AM PDT             6.9           3043         -              Normal
  05/31/2023 11 AM PDT             6.8           2936         -              Normal
  05/31/2023 12 PM PDT             6.7           2842         -              Normal
  05/31/2023 01 PM PDT             6.6           2750         -              Normal
  05/31/2023 02 PM PDT             6.5           2709         -              Normal
  05/31/2023 03 PM PDT             6.5           2659         -              Normal
  05/31/2023 04 PM PDT             6.4           2610         -              Normal
  05/31/2023 05 PM PDT             6.5           2649         +              Normal
  05/31/2023 06 PM PDT             6.6           2781         +              Normal
  05/31/2023 07 PM PDT             6.7           2873         +              Normal
  05/31/2023 08 PM PDT             6.8           3011         +              Normal
  05/31/2023 09 PM PDT             7.0           3140         +              Normal
  05/31/2023 10 PM PDT             7.0           3251         +              Normal
  05/31/2023 11 PM PDT             7.1           3330         +              Normal
  06/01/2023 12 AM PDT             7.1           3352         +              Normal
  06/01/2023 01 AM PDT             7.2           3386         +              Normal
  06/01/2023 02 AM PDT             7.2           3409         +              Normal
  06/01/2023 03 AM PDT             7.2           3421         +              Normal
  06/01/2023 04 AM PDT             7.2           3398         -              Normal
  06/01/2023 05 AM PDT             7.2           3364         -              Normal
  06/01/2023 06 AM PDT             7.1           3318         -              Normal
  06/01/2023 07 AM PDT             7.0           3240         -              Normal
  06/01/2023 08 AM PDT             7.0           3173         -              Normal
  06/01/2023 09 AM PDT             6.9           3097         -              Normal
  06/01/2023 10 AM PDT             6.8           3021         -              Normal
  06/01/2023 11 AM PDT             6.8           2926         -              Normal
  06/01/2023 12 PM PDT             6.7           2832         -              Normal
  06/01/2023 01 PM PDT             6.6           2740         -              Normal
  06/01/2023 02 PM PDT             6.5           2679         -              Normal
  06/01/2023 03 PM PDT             6.5           2629         -              Normal
  06/01/2023 04 PM PDT             6.4           2570         -              Normal
  06/01/2023 05 PM PDT             6.4           2590         +              Normal
  06/01/2023 06 PM PDT             6.5           2719         +              Normal
  06/01/2023 07 PM PDT             6.6           2801         +              Normal
  06/01/2023 08 PM PDT             6.8           2926         +              Normal
  06/01/2023 09 PM PDT             6.9           3054         +              Normal
  06/01/2023 10 PM PDT             7.0           3162         +              Normal
  06/01/2023 11 PM PDT             7.0           3229         +              Normal
  06/02/2023 12 AM PDT             7.0           3251         +              Normal
  06/02/2023 01 AM PDT             7.1           3285         +              Normal
  06/02/2023 02 AM PDT             7.1           3318         +              Normal
  06/02/2023 03 AM PDT             7.1           3318         0              Normal
  06/02/2023 04 AM PDT             7.1           3307         -              Normal
  06/02/2023 05 AM PDT             7.1           3273         -              Normal
  06/02/2023 06 AM PDT             7.0           3218         -              Normal
  06/02/2023 07 AM PDT             7.0           3140         -              Normal
  06/02/2023 08 AM PDT             6.9           3064         -              Normal
  06/02/2023 09 AM PDT             6.8           2989         -              Normal
  06/02/2023 10 AM PDT             6.7           2915         -              Normal
  06/02/2023 11 AM PDT             6.7           2822         -              Normal
  06/02/2023 12 PM PDT             6.5           2719         -              Normal
  06/02/2023 01 PM PDT             6.5           2629         -              Normal
  06/02/2023 02 PM PDT             6.4           2570         -              Normal
  06/02/2023 03 PM PDT             6.3           2522         -              Normal
  06/02/2023 04 PM PDT             6.3           2464         -              Normal
  06/02/2023 05 PM PDT             6.3           2493         +              Normal
  06/02/2023 06 PM PDT             6.5           2629         +              Normal
  06/02/2023 07 PM PDT             6.5           2719         +              Normal
  06/02/2023 08 PM PDT             6.7           2853         +              Normal
  06/02/2023 09 PM PDT             6.8           2989         +              Normal
  06/02/2023 10 PM PDT             6.9           3108         +              Normal
  06/02/2023 11 PM PDT             7.0           3173         +              Normal
  06/03/2023 12 AM PDT             7.0           3218         +              Normal
  06/03/2023 01 AM PDT             7.1           3262         +              Normal
  06/03/2023 02 AM PDT             7.1           3307         +              Normal
  06/03/2023 03 AM PDT             7.1           3330         +              Normal
  06/03/2023 04 AM PDT             7.1           3330         0              Normal
  06/03/2023 05 AM PDT             7.1           3307         -              Normal
  06/03/2023 06 AM PDT             7.1           3273         -              Normal
  06/03/2023 07 AM PDT             7.0           3207         -              Normal
  06/03/2023 08 AM PDT             7.0           3140         -              Normal
  06/03/2023 09 AM PDT             6.9           3086         -              Normal
  06/03/2023 10 AM PDT             6.8           3021         -              Normal
  06/03/2023 11 AM PDT             6.8           2936         -              Normal
  06/03/2023 12 PM PDT             6.7           2863         -              Normal
  06/03/2023 01 PM PDT             6.6           2791         -              Normal
  06/03/2023 02 PM PDT             6.6           2750         -              Normal
  06/03/2023 03 PM PDT             6.5           2719         -              Normal
  06/03/2023 04 PM PDT             6.5           2689         -              Normal
  06/03/2023 05 PM PDT             6.6           2750         +              Normal
  06/03/2023 06 PM PDT             6.7           2915         +              Normal
  06/03/2023 07 PM PDT             6.8           3032         +              Normal
  06/03/2023 08 PM PDT             7.0           3207         +              Normal
  06/03/2023 09 PM PDT             7.2           3375         +              Normal
  06/03/2023 10 PM PDT             7.3           3525         +              Normal
  06/03/2023 11 PM PDT             7.4           3643         +              Normal
  06/04/2023 12 AM PDT             7.4           3690         +              Normal
  06/04/2023 01 AM PDT             7.5           3739         +              Normal
  06/04/2023 02 AM PDT             7.5           3787         +              Normal
  06/04/2023 03 AM PDT             7.5           3811         +              Normal
  06/04/2023 04 AM PDT             7.5           3811         0              Normal
  06/04/2023 05 AM PDT             7.5           3787         -              Normal
  06/04/2023 06 AM PDT             7.5           3726         -              Normal
  06/04/2023 07 AM PDT             7.4           3655         -              Normal
  06/04/2023 08 AM PDT             7.3           3572         -              Normal
  06/04/2023 09 AM PDT             7.3           3490         -              Normal
  06/04/2023 10 AM PDT             7.2           3421         -              Normal
  06/04/2023 11 AM PDT             7.1           3318         -              Normal
  06/04/2023 12 PM PDT             7.0           3229         -              Normal
  06/04/2023 01 PM PDT             7.0           3140         -              Normal
  06/04/2023 02 PM PDT             6.9           3108         -              Normal
  06/04/2023 03 PM PDT             6.9           3064         -              Normal
  06/04/2023 04 PM PDT             6.8           3032         -              Normal
  06/04/2023 05 PM PDT             6.9           3097         +              Normal
  06/04/2023 06 PM PDT             7.1           3285         +              Normal
  06/04/2023 07 PM PDT             7.2           3421         +              Normal
  06/04/2023 08 PM PDT             7.4           3607         +              Normal
  06/04/2023 09 PM PDT             7.5           3811         +              Normal
  06/04/2023 10 PM PDT             7.7           3984         +              Normal
  06/04/2023 11 PM PDT             7.8           4097         +              Normal
  06/05/2023 12 AM PDT             7.8           4136         +              Normal
  06/05/2023 01 AM PDT             7.8           4187         +              Normal
  06/05/2023 02 AM PDT             7.9           4225         +              Normal
  06/05/2023 03 AM PDT             7.9           4238         +              Normal
  06/05/2023 04 AM PDT             7.9           4225         -              Normal
  06/05/2023 05 AM PDT             7.8           4174         -              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.