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

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MAD RIVER - ARCATA (ARCC1)
Latitude: 40.91º NLongitude: 124.06º WElevation: 13 Feet
Location: Humboldt County in CaliforniaBulletin Group: North CoastRiver Group: North Coast
Issuance Time: May 24 2024 at 7:38 AM PDTNext Issuance: May 25 2024 at 9:00 AM PDT
Monitor Stage: 15.0 FeetFlood Stage: 22.0 Feet

# Tabular Observed and Forecast Hydrograph Information
#
# Location: Mad River - Arcata (ARCC1)
#
# File Generation Time:  05/24/2024 at 07:38 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  05/19/2024 at 07:00 AM PDT
# Maximum Observed Stage:                       6.69 Feet
# Maximum Observed Flow:                        508 cfs
#
# Earliest Date & Time of Maximum Forecast:     05/24/2024 at 08:00 AM PDT
# Maximum Forecast Stage:                       6.44 Feet
# Maximum Forecast Flow:                        406 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  05/19/2024 07 AM PDT            6.69            508                        Normal
  05/19/2024 08 AM PDT            6.68            504         -              Normal
  05/19/2024 09 AM PDT            6.66            495         -              Normal
  05/19/2024 10 AM PDT            6.66            495         0              Normal
  05/19/2024 11 AM PDT            6.68            504         +              Normal
  05/19/2024 12 PM PDT            6.68            504         0              Normal
  05/19/2024 01 PM PDT            6.66            495         -              Normal
  05/19/2024 02 PM PDT            6.65            491         -              Normal
  05/19/2024 03 PM PDT            6.64            487         -              Normal
  05/19/2024 04 PM PDT            6.66            495         +              Normal
  05/19/2024 05 PM PDT            6.67            499         +              Normal
  05/19/2024 06 PM PDT            6.67            499         0              Normal
  05/19/2024 07 PM PDT            6.66            495         -              Normal
  05/19/2024 08 PM PDT            6.67            499         +              Normal
  05/19/2024 09 PM PDT            6.67            499         0              Normal
  05/19/2024 10 PM PDT            6.65            491         -              Normal
  05/19/2024 11 PM PDT            6.64            487         -              Normal
  05/20/2024 12 AM PDT            6.64            487         0              Normal
  05/20/2024 01 AM PDT            6.64            487         0              Normal
  05/20/2024 02 AM PDT            6.64            487         0              Normal
  05/20/2024 03 AM PDT            6.62            478         -              Normal
  05/20/2024 04 AM PDT            6.60            470         -              Normal
  05/20/2024 05 AM PDT            6.62            478         +              Normal
  05/20/2024 06 AM PDT            6.60            470         -              Normal
  05/20/2024 07 AM PDT            6.60            470         0              Normal
  05/20/2024 08 AM PDT            6.60            470         0              Normal
  05/20/2024 09 AM PDT            6.60            470         0              Normal
  05/20/2024 10 AM PDT            6.59            466         -              Normal
  05/20/2024 11 AM PDT            6.62            478         +              Normal
  05/20/2024 12 PM PDT            6.61            474         -              Normal
  05/20/2024 01 PM PDT            6.61            474         0              Normal
  05/20/2024 02 PM PDT            6.59            466         -              Normal
  05/20/2024 03 PM PDT            6.60            470         +              Normal
  05/20/2024 04 PM PDT            6.58            462         -              Normal
  05/20/2024 05 PM PDT            6.63            482         +              Normal
  05/20/2024 06 PM PDT            6.62            478         -              Normal
  05/20/2024 07 PM PDT            6.64            487         +              Normal
  05/20/2024 08 PM PDT            6.62            478         -              Normal
  05/20/2024 09 PM PDT            6.61            474         -              Normal
  05/20/2024 10 PM PDT            6.61            474         0              Normal
  05/20/2024 11 PM PDT            6.60            470         -              Normal
  05/21/2024 12 AM PDT            6.60            470         0              Normal
  05/21/2024 01 AM PDT            6.58            462         -              Normal
  05/21/2024 02 AM PDT            6.59            466         +              Normal
  05/21/2024 03 AM PDT            6.58            462         -              Normal
  05/21/2024 04 AM PDT            6.57            458         -              Normal
  05/21/2024 05 AM PDT            6.57            458         0              Normal
  05/21/2024 06 AM PDT            6.56            454         -              Normal
  05/21/2024 07 AM PDT            6.56            454         0              Normal
  05/21/2024 08 AM PDT            6.56            454         0              Normal
  05/21/2024 09 AM PDT            6.56            454         0              Normal
  05/21/2024 10 AM PDT            6.57            458         +              Normal
  05/21/2024 11 AM PDT            6.56            454         -              Normal
  05/21/2024 12 PM PDT            6.55            450         -              Normal
  05/21/2024 01 PM PDT            6.58            462         +              Normal
  05/21/2024 02 PM PDT            6.55            450         -              Normal
  05/21/2024 03 PM PDT            6.56            454         +              Normal
  05/21/2024 04 PM PDT            6.56            454         0              Normal
  05/21/2024 05 PM PDT            6.58            462         +              Normal
  05/21/2024 06 PM PDT            6.58            462         0              Normal
  05/21/2024 07 PM PDT            6.57            458         -              Normal
  05/21/2024 08 PM PDT            6.58            462         +              Normal
  05/21/2024 09 PM PDT            6.57            458         -              Normal
  05/21/2024 10 PM PDT            6.55            450         -              Normal
  05/21/2024 11 PM PDT            6.54            446         -              Normal
  05/22/2024 12 AM PDT            6.54            446         0              Normal
  05/22/2024 01 AM PDT            6.54            446         0              Normal
  05/22/2024 02 AM PDT            6.53            442         -              Normal
  05/22/2024 03 AM PDT            6.54            446         +              Normal
  05/22/2024 04 AM PDT            6.54            446         0              Normal
  05/22/2024 05 AM PDT            6.54            446         0              Normal
  05/22/2024 06 AM PDT            6.53            442         -              Normal
  05/22/2024 07 AM PDT            6.52            438         -              Normal
  05/22/2024 08 AM PDT            6.53            442         +              Normal
  05/22/2024 09 AM PDT            6.52            438         -              Normal
  05/22/2024 10 AM PDT            6.51            434         -              Normal
  05/22/2024 11 AM PDT            6.51            434         0              Normal
  05/22/2024 12 PM PDT            6.52            438         +              Normal
  05/22/2024 01 PM PDT            6.52            438         0              Normal
  05/22/2024 02 PM PDT            6.54            446         +              Normal
  05/22/2024 03 PM PDT            6.53            442         -              Normal
  05/22/2024 04 PM PDT            6.53            442         0              Normal
  05/22/2024 05 PM PDT            6.54            446         +              Normal
  05/22/2024 06 PM PDT            6.54            446         0              Normal
  05/22/2024 07 PM PDT            6.54            446         0              Normal
  05/22/2024 08 PM PDT            6.52            438         -              Normal
  05/22/2024 09 PM PDT            6.53            442         +              Normal
  05/22/2024 10 PM PDT            6.52            438         -              Normal
  05/22/2024 11 PM PDT            6.50            430         -              Normal
  05/23/2024 12 AM PDT            6.50            430         0              Normal
  05/23/2024 01 AM PDT            6.49            426         -              Normal
  05/23/2024 02 AM PDT            6.49            426         0              Normal
  05/23/2024 03 AM PDT            6.51            434         +              Normal
  05/23/2024 04 AM PDT            6.49            426         -              Normal
  05/23/2024 05 AM PDT            6.49            426         0              Normal
  05/23/2024 06 AM PDT            6.48            422         -              Normal
  05/23/2024 07 AM PDT            6.49            426         +              Normal
  05/23/2024 08 AM PDT            6.49            426         0              Normal
  05/23/2024 09 AM PDT            6.47            418         -              Normal
  05/23/2024 10 AM PDT            6.48            422         +              Normal
  05/23/2024 11 AM PDT            6.47            418         -              Normal
  05/23/2024 12 PM PDT            6.47            418         0              Normal
  05/23/2024 01 PM PDT            6.49            426         +              Normal
  05/23/2024 02 PM PDT            6.49            426         0              Normal
  05/23/2024 03 PM PDT            6.48            422         -              Normal
  05/23/2024 04 PM PDT            6.49            426         +              Normal
  05/23/2024 05 PM PDT            6.50            430         +              Normal
  05/23/2024 06 PM PDT            6.49            426         -              Normal
  05/23/2024 07 PM PDT            6.52            438         +              Normal
  05/23/2024 08 PM PDT            6.50            430         -              Normal
  05/23/2024 09 PM PDT            6.50            430         0              Normal
  05/23/2024 10 PM PDT            6.48            422         -              Normal
  05/23/2024 11 PM PDT            6.45            410         -              Normal
  05/24/2024 12 AM PDT            6.46            414         +              Normal
  05/24/2024 01 AM PDT            6.44            406         -              Normal
  05/24/2024 02 AM PDT            6.45            410         +              Normal
  05/24/2024 03 AM PDT            6.45            410         0              Normal
  05/24/2024 04 AM PDT            6.42            399         -              Normal
  05/24/2024 05 AM PDT            6.45            410         +              Normal
  05/24/2024 06 AM PDT            6.45            410         0              Normal
  05/24/2024 07 AM PDT            6.45            410         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  05/24/2024 08 AM PDT            6.44            406                        Normal
  05/24/2024 09 AM PDT            6.44            406         0              Normal
  05/24/2024 10 AM PDT            6.44            406         0              Normal
  05/24/2024 11 AM PDT            6.44            406         0              Normal
  05/24/2024 12 PM PDT            6.43            403         -              Normal
  05/24/2024 01 PM PDT            6.43            403         0              Normal
  05/24/2024 02 PM PDT            6.43            403         0              Normal
  05/24/2024 03 PM PDT            6.43            403         0              Normal
  05/24/2024 04 PM PDT            6.43            403         0              Normal
  05/24/2024 05 PM PDT            6.42            399         -              Normal
  05/24/2024 06 PM PDT            6.42            399         0              Normal
  05/24/2024 07 PM PDT            6.42            399         0              Normal
  05/24/2024 08 PM PDT            6.42            399         0              Normal
  05/24/2024 09 PM PDT            6.42            399         0              Normal
  05/24/2024 10 PM PDT            6.41            395         -              Normal
  05/24/2024 11 PM PDT            6.41            395         0              Normal
  05/25/2024 12 AM PDT            6.41            395         0              Normal
  05/25/2024 01 AM PDT            6.41            395         0              Normal
  05/25/2024 02 AM PDT            6.40            391         -              Normal
  05/25/2024 03 AM PDT            6.40            391         0              Normal
  05/25/2024 04 AM PDT            6.40            391         0              Normal
  05/25/2024 05 AM PDT            6.40            391         0              Normal
  05/25/2024 06 AM PDT            6.39            387         -              Normal
  05/25/2024 07 AM PDT            6.39            387         0              Normal
  05/25/2024 08 AM PDT            6.39            387         0              Normal
  05/25/2024 09 AM PDT            6.39            387         0              Normal
  05/25/2024 10 AM PDT            6.38            384         -              Normal
  05/25/2024 11 AM PDT            6.38            384         0              Normal
  05/25/2024 12 PM PDT            6.38            384         0              Normal
  05/25/2024 01 PM PDT            6.37            380         -              Normal
  05/25/2024 02 PM PDT            6.37            380         0              Normal
  05/25/2024 03 PM PDT            6.37            380         0              Normal
  05/25/2024 04 PM PDT            6.37            380         0              Normal
  05/25/2024 05 PM PDT            6.36            376         -              Normal
  05/25/2024 06 PM PDT            6.36            376         0              Normal
  05/25/2024 07 PM PDT            6.36            376         0              Normal
  05/25/2024 08 PM PDT            6.36            376         0              Normal
  05/25/2024 09 PM PDT            6.35            373         -              Normal
  05/25/2024 10 PM PDT            6.35            373         0              Normal
  05/25/2024 11 PM PDT            6.35            373         0              Normal
  05/26/2024 12 AM PDT            6.35            373         0              Normal
  05/26/2024 01 AM PDT            6.35            373         0              Normal
  05/26/2024 02 AM PDT            6.34            369         -              Normal
  05/26/2024 03 AM PDT            6.34            369         0              Normal
  05/26/2024 04 AM PDT            6.34            369         0              Normal
  05/26/2024 05 AM PDT            6.34            369         0              Normal
  05/26/2024 06 AM PDT            6.33            365         -              Normal
  05/26/2024 07 AM PDT            6.33            365         0              Normal
  05/26/2024 08 AM PDT            6.33            365         0              Normal
  05/26/2024 09 AM PDT            6.33            365         0              Normal
  05/26/2024 10 AM PDT            6.32            362         -              Normal
  05/26/2024 11 AM PDT            6.32            362         0              Normal
  05/26/2024 12 PM PDT            6.32            362         0              Normal
  05/26/2024 01 PM PDT            6.32            362         0              Normal
  05/26/2024 02 PM PDT            6.31            358         -              Normal
  05/26/2024 03 PM PDT            6.31            358         0              Normal
  05/26/2024 04 PM PDT            6.31            358         0              Normal
  05/26/2024 05 PM PDT            6.30            355         -              Normal
  05/26/2024 06 PM PDT            6.30            355         0              Normal
  05/26/2024 07 PM PDT            6.30            355         0              Normal
  05/26/2024 08 PM PDT            6.30            355         0              Normal
  05/26/2024 09 PM PDT            6.29            351         -              Normal
  05/26/2024 10 PM PDT            6.29            351         0              Normal
  05/26/2024 11 PM PDT            6.29            351         0              Normal
  05/27/2024 12 AM PDT            6.29            351         0              Normal
  05/27/2024 01 AM PDT            6.29            351         0              Normal
  05/27/2024 02 AM PDT            6.28            348         -              Normal
  05/27/2024 03 AM PDT            6.28            348         0              Normal
  05/27/2024 04 AM PDT            6.28            348         0              Normal
  05/27/2024 05 AM PDT            6.28            348         0              Normal
  05/27/2024 06 AM PDT            6.28            348         0              Normal
  05/27/2024 07 AM PDT            6.28            348         0              Normal
  05/27/2024 08 AM PDT            6.28            348         0              Normal
  05/27/2024 09 AM PDT            6.27            344         -              Normal
  05/27/2024 10 AM PDT            6.27            344         0              Normal
  05/27/2024 11 AM PDT            6.27            344         0              Normal
  05/27/2024 12 PM PDT            6.27            344         0              Normal
  05/27/2024 01 PM PDT            6.26            341         -              Normal
  05/27/2024 02 PM PDT            6.26            341         0              Normal
  05/27/2024 03 PM PDT            6.26            341         0              Normal
  05/27/2024 04 PM PDT            6.26            341         0              Normal
  05/27/2024 05 PM PDT            6.26            341         0              Normal
  05/27/2024 06 PM PDT            6.26            341         0              Normal
  05/27/2024 07 PM PDT            6.25            337         -              Normal
  05/27/2024 08 PM PDT            6.25            337         0              Normal
  05/27/2024 09 PM PDT            6.25            337         0              Normal
  05/27/2024 10 PM PDT            6.25            337         0              Normal
  05/27/2024 11 PM PDT            6.25            337         0              Normal
  05/28/2024 12 AM PDT            6.25            337         0              Normal
  05/28/2024 01 AM PDT            6.25            337         0              Normal
  05/28/2024 02 AM PDT            6.25            337         0              Normal
  05/28/2024 03 AM PDT            6.25            337         0              Normal
  05/28/2024 04 AM PDT            6.25            337         0              Normal
  05/28/2024 05 AM PDT            6.25            337         0              Normal
  05/28/2024 06 AM PDT            6.24            334         -              Normal
  05/28/2024 07 AM PDT            6.24            334         0              Normal
  05/28/2024 08 AM PDT            6.24            334         0              Normal
  05/28/2024 09 AM PDT            6.24            334         0              Normal
  05/28/2024 10 AM PDT            6.24            334         0              Normal
  05/28/2024 11 AM PDT            6.23            330         -              Normal
  05/28/2024 12 PM PDT            6.23            330         0              Normal
  05/28/2024 01 PM PDT            6.23            330         0              Normal
  05/28/2024 02 PM PDT            6.23            330         0              Normal
  05/28/2024 03 PM PDT            6.23            330         0              Normal
  05/28/2024 04 PM PDT            6.22            327         -              Normal
  05/28/2024 05 PM PDT            6.22            327         0              Normal
  05/28/2024 06 PM PDT            6.22            327         0              Normal
  05/28/2024 07 PM PDT            6.22            327         0              Normal
  05/28/2024 08 PM PDT            6.22            327         0              Normal
  05/28/2024 09 PM PDT            6.22            327         0              Normal
  05/28/2024 10 PM PDT            6.22            327         0              Normal
  05/28/2024 11 PM PDT            6.22            327         0              Normal
  05/29/2024 12 AM PDT            6.22            327         0              Normal
  05/29/2024 01 AM PDT            6.22            327         0              Normal
  05/29/2024 02 AM PDT            6.22            327         0              Normal
  05/29/2024 03 AM PDT            6.22            327         0              Normal
  05/29/2024 04 AM PDT            6.22            327         0              Normal
  05/29/2024 05 AM PDT            6.22            327         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.