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: Jun 01 2025 at 8:14 AM PDTNext Issuance: Jun 02 2025 at 9:00 AM PDT
Action/Monitor: 15.0 FeetMinor Flood: 22.0 FeetModerate Flood: 24.0 FeetMajor Flood: 28.0 Feet

# Tabular Observed and Forecast Hydrograph Information
#
# Location: Mad River - Arcata (ARCC1)
#
# File Generation Time:  06/01/2025 at 08:14 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  05/27/2025 at 10:00 PM PDT
# Maximum Observed Stage:                       6.07 Feet
# Maximum Observed Flow:                        133 cfs
#
# Earliest Date & Time of Maximum Forecast:     06/01/2025 at 09:00 AM PDT
# Maximum Forecast Stage:                       5.96 Feet
# Maximum Forecast Flow:                        108 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  05/27/2025 08 AM PDT            6.04            126                        Normal
  05/27/2025 09 AM PDT            6.06            130         +              Normal
  05/27/2025 10 AM PDT            6.06            130         0              Normal
  05/27/2025 11 AM PDT            6.05            128         -              Normal
  05/27/2025 12 PM PDT            6.04            126         -              Normal
  05/27/2025 01 PM PDT            6.04            126         0              Normal
  05/27/2025 02 PM PDT            6.05            128         +              Normal
  05/27/2025 03 PM PDT            6.05            128         0              Normal
  05/27/2025 04 PM PDT            6.06            130         +              Normal
  05/27/2025 05 PM PDT            6.06            130         0              Normal
  05/27/2025 06 PM PDT            6.07            133         +              Normal
  05/27/2025 07 PM PDT            6.07            133         0              Normal
  05/27/2025 08 PM PDT            6.07            133         0              Normal
  05/27/2025 09 PM PDT            6.07            133         0              Normal
  05/27/2025 10 PM PDT            6.07            133         0              Normal
  05/27/2025 11 PM PDT            6.05            128         -              Normal
  05/28/2025 12 AM PDT            6.04            126         -              Normal
  05/28/2025 01 AM PDT            6.03            124         -              Normal
  05/28/2025 02 AM PDT            6.03            124         0              Normal
  05/28/2025 03 AM PDT            6.02            121         -              Normal
  05/28/2025 04 AM PDT            6.02            121         0              Normal
  05/28/2025 05 AM PDT            6.02            121         0              Normal
  05/28/2025 06 AM PDT            6.01            119         -              Normal
  05/28/2025 07 AM PDT            6.02            121         +              Normal
  05/28/2025 08 AM PDT            6.02            121         0              Normal
  05/28/2025 09 AM PDT            6.03            124         +              Normal
  05/28/2025 10 AM PDT            6.03            124         0              Normal
  05/28/2025 11 AM PDT            6.03            124         0              Normal
  05/28/2025 12 PM PDT            6.02            121         -              Normal
  05/28/2025 01 PM PDT            6.01            119         -              Normal
  05/28/2025 02 PM PDT            6.00            117         -              Normal
  05/28/2025 03 PM PDT            6.02            121         +              Normal
  05/28/2025 04 PM PDT            6.04            126         +              Normal
  05/28/2025 05 PM PDT            6.05            128         +              Normal
  05/28/2025 06 PM PDT            6.05            128         0              Normal
  05/28/2025 07 PM PDT            6.05            128         0              Normal
  05/28/2025 08 PM PDT            6.05            128         0              Normal
  05/28/2025 09 PM PDT            6.05            128         0              Normal
  05/28/2025 10 PM PDT            6.04            126         -              Normal
  05/28/2025 11 PM PDT            6.04            126         0              Normal
  05/29/2025 12 AM PDT            6.01            119         -              Normal
  05/29/2025 01 AM PDT            6.01            119         0              Normal
  05/29/2025 02 AM PDT            6.00            117         -              Normal
  05/29/2025 03 AM PDT            6.00            117         0              Normal
  05/29/2025 04 AM PDT            6.00            117         0              Normal
  05/29/2025 05 AM PDT            6.00            117         0              Normal
  05/29/2025 06 AM PDT            6.00            117         0              Normal
  05/29/2025 07 AM PDT            6.00            117         0              Normal
  05/29/2025 08 AM PDT            5.99            115         -              Normal
  05/29/2025 09 AM PDT            5.99            115         0              Normal
  05/29/2025 10 AM PDT            6.02            121         +              Normal
  05/29/2025 11 AM PDT            6.03            124         +              Normal
  05/29/2025 12 PM PDT            6.04            126         +              Normal
  05/29/2025 01 PM PDT            6.03            124         -              Normal
  05/29/2025 02 PM PDT            5.99            115         -              Normal
  05/29/2025 03 PM PDT            5.99            115         0              Normal
  05/29/2025 04 PM PDT            6.01            119         +              Normal
  05/29/2025 05 PM PDT            6.03            124         +              Normal
  05/29/2025 06 PM PDT            6.03            124         0              Normal
  05/29/2025 07 PM PDT            6.04            126         +              Normal
  05/29/2025 08 PM PDT            6.04            126         0              Normal
  05/29/2025 09 PM PDT            6.03            124         -              Normal
  05/29/2025 10 PM PDT            6.01            119         -              Normal
  05/29/2025 11 PM PDT            6.01            119         0              Normal
  05/30/2025 12 AM PDT            6.00            117         -              Normal
  05/30/2025 01 AM PDT            5.98            113         -              Normal
  05/30/2025 02 AM PDT            5.99            115         +              Normal
  05/30/2025 03 AM PDT            5.98            113         -              Normal
  05/30/2025 04 AM PDT            5.99            115         +              Normal
  05/30/2025 05 AM PDT            5.99            115         0              Normal
  05/30/2025 06 AM PDT            5.98            113         -              Normal
  05/30/2025 07 AM PDT            5.99            115         +              Normal
  05/30/2025 08 AM PDT            5.98            113         -              Normal
  05/30/2025 09 AM PDT            5.98            113         0              Normal
  05/30/2025 10 AM PDT            5.99            115         +              Normal
  05/30/2025 11 AM PDT            5.99            115         0              Normal
  05/30/2025 12 PM PDT            5.98            113         -              Normal
  05/30/2025 01 PM PDT            5.98            113         0              Normal
  05/30/2025 02 PM PDT            5.99            115         +              Normal
  05/30/2025 03 PM PDT            6.00            117         +              Normal
  05/30/2025 04 PM PDT            6.01            119         +              Normal
  05/30/2025 05 PM PDT            6.01            119         0              Normal
  05/30/2025 06 PM PDT            6.01            119         0              Normal
  05/30/2025 07 PM PDT            6.02            121         +              Normal
  05/30/2025 08 PM PDT            6.02            121         0              Normal
  05/30/2025 09 PM PDT            6.02            121         0              Normal
  05/30/2025 10 PM PDT            5.99            115         -              Normal
  05/30/2025 11 PM PDT            5.98            113         -              Normal
  05/31/2025 12 AM PDT            5.98            113         0              Normal
  05/31/2025 01 AM PDT            5.98            113         0              Normal
  05/31/2025 02 AM PDT            5.97            110         -              Normal
  05/31/2025 03 AM PDT            5.96            108         -              Normal
  05/31/2025 04 AM PDT            5.97            110         +              Normal
  05/31/2025 05 AM PDT            5.97            110         0              Normal
  05/31/2025 06 AM PDT            5.97            110         0              Normal
  05/31/2025 07 AM PDT            5.97            110         0              Normal
  05/31/2025 08 AM PDT            5.97            110         0              Normal
  05/31/2025 09 AM PDT            5.97            110         0              Normal
  05/31/2025 10 AM PDT            5.96            108         -              Normal
  05/31/2025 11 AM PDT            5.95            106         -              Normal
  05/31/2025 12 PM PDT            5.95            106         0              Normal
  05/31/2025 01 PM PDT            5.95            106         0              Normal
  05/31/2025 02 PM PDT            5.94            104         -              Normal
  05/31/2025 03 PM PDT            5.96            108         +              Normal
  05/31/2025 04 PM PDT            5.96            108         0              Normal
  05/31/2025 05 PM PDT            5.97            110         +              Normal
  05/31/2025 06 PM PDT            5.98            113         +              Normal
  05/31/2025 07 PM PDT            5.98            113         0              Normal
  05/31/2025 08 PM PDT            5.99            115         +              Normal
  05/31/2025 09 PM PDT            5.99            115         0              Normal
  05/31/2025 10 PM PDT            5.98            113         -              Normal
  05/31/2025 11 PM PDT            5.97            110         -              Normal
  06/01/2025 12 AM PDT            5.96            108         -              Normal
  06/01/2025 01 AM PDT            5.94            104         -              Normal
  06/01/2025 02 AM PDT            5.94            104         0              Normal
  06/01/2025 03 AM PDT            5.93            102         -              Normal
  06/01/2025 04 AM PDT            5.94            104         +              Normal
  06/01/2025 05 AM PDT            5.94            104         0              Normal
  06/01/2025 06 AM PDT            5.96            108         +              Normal
  06/01/2025 07 AM PDT            5.96            108         0              Normal
  06/01/2025 08 AM PDT            5.96            108         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  06/01/2025 09 AM PDT            5.96            108                        Normal
  06/01/2025 10 AM PDT            5.96            108         0              Normal
  06/01/2025 11 AM PDT            5.96            108         0              Normal
  06/01/2025 12 PM PDT            5.96            108         0              Normal
  06/01/2025 01 PM PDT            5.95            106         -              Normal
  06/01/2025 02 PM PDT            5.95            106         0              Normal
  06/01/2025 03 PM PDT            5.95            106         0              Normal
  06/01/2025 04 PM PDT            5.95            106         0              Normal
  06/01/2025 05 PM PDT            5.95            106         0              Normal
  06/01/2025 06 PM PDT            5.95            106         0              Normal
  06/01/2025 07 PM PDT            5.95            106         0              Normal
  06/01/2025 08 PM PDT            5.95            106         0              Normal
  06/01/2025 09 PM PDT            5.95            106         0              Normal
  06/01/2025 10 PM PDT            5.95            106         0              Normal
  06/01/2025 11 PM PDT            5.95            106         0              Normal
  06/02/2025 12 AM PDT            5.95            106         0              Normal
  06/02/2025 01 AM PDT            5.95            106         0              Normal
  06/02/2025 02 AM PDT            5.94            104         -              Normal
  06/02/2025 03 AM PDT            5.94            104         0              Normal
  06/02/2025 04 AM PDT            5.94            104         0              Normal
  06/02/2025 05 AM PDT            5.94            104         0              Normal
  06/02/2025 06 AM PDT            5.94            104         0              Normal
  06/02/2025 07 AM PDT            5.94            104         0              Normal
  06/02/2025 08 AM PDT            5.94            104         0              Normal
  06/02/2025 09 AM PDT            5.94            104         0              Normal
  06/02/2025 10 AM PDT            5.94            104         0              Normal
  06/02/2025 11 AM PDT            5.94            104         0              Normal
  06/02/2025 12 PM PDT            5.94            104         0              Normal
  06/02/2025 01 PM PDT            5.93            102         -              Normal
  06/02/2025 02 PM PDT            5.93            102         0              Normal
  06/02/2025 03 PM PDT            5.93            102         0              Normal
  06/02/2025 04 PM PDT            5.93            102         0              Normal
  06/02/2025 05 PM PDT            5.93            102         0              Normal
  06/02/2025 06 PM PDT            5.93            102         0              Normal
  06/02/2025 07 PM PDT            5.93            102         0              Normal
  06/02/2025 08 PM PDT            5.93            102         0              Normal
  06/02/2025 09 PM PDT            5.93            102         0              Normal
  06/02/2025 10 PM PDT            5.93            102         0              Normal
  06/02/2025 11 PM PDT            5.93            102         0              Normal
  06/03/2025 12 AM PDT            5.93            102         0              Normal
  06/03/2025 01 AM PDT            5.92            100         -              Normal
  06/03/2025 02 AM PDT            5.92            100         0              Normal
  06/03/2025 03 AM PDT            5.92            100         0              Normal
  06/03/2025 04 AM PDT            5.92            100         0              Normal
  06/03/2025 05 AM PDT            5.92            100         0              Normal
  06/03/2025 06 AM PDT            5.92            100         0              Normal
  06/03/2025 07 AM PDT            5.92            100         0              Normal
  06/03/2025 08 AM PDT            5.92            100         0              Normal
  06/03/2025 09 AM PDT            5.92            100         0              Normal
  06/03/2025 10 AM PDT            5.93            102         +              Normal
  06/03/2025 11 AM PDT            5.93            102         0              Normal
  06/03/2025 12 PM PDT            5.93            102         0              Normal
  06/03/2025 01 PM PDT            5.93            102         0              Normal
  06/03/2025 02 PM PDT            5.93            102         0              Normal
  06/03/2025 03 PM PDT            5.93            102         0              Normal
  06/03/2025 04 PM PDT            5.93            102         0              Normal
  06/03/2025 05 PM PDT            5.93            102         0              Normal
  06/03/2025 06 PM PDT            5.94            104         +              Normal
  06/03/2025 07 PM PDT            5.94            104         0              Normal
  06/03/2025 08 PM PDT            5.94            104         0              Normal
  06/03/2025 09 PM PDT            5.94            104         0              Normal
  06/03/2025 10 PM PDT            5.94            104         0              Normal
  06/03/2025 11 PM PDT            5.94            104         0              Normal
  06/04/2025 12 AM PDT            5.94            104         0              Normal
  06/04/2025 01 AM PDT            5.94            104         0              Normal
  06/04/2025 02 AM PDT            5.94            104         0              Normal
  06/04/2025 03 AM PDT            5.94            104         0              Normal
  06/04/2025 04 AM PDT            5.94            104         0              Normal
  06/04/2025 05 AM PDT            5.94            104         0              Normal
  06/04/2025 06 AM PDT            5.94            104         0              Normal
  06/04/2025 07 AM PDT            5.94            104         0              Normal
  06/04/2025 08 AM PDT            5.94            104         0              Normal
  06/04/2025 09 AM PDT            5.94            104         0              Normal
  06/04/2025 10 AM PDT            5.94            104         0              Normal
  06/04/2025 11 AM PDT            5.94            104         0              Normal
  06/04/2025 12 PM PDT            5.94            104         0              Normal
  06/04/2025 01 PM PDT            5.94            104         0              Normal
  06/04/2025 02 PM PDT            5.94            104         0              Normal
  06/04/2025 03 PM PDT            5.94            104         0              Normal
  06/04/2025 04 PM PDT            5.94            104         0              Normal
  06/04/2025 05 PM PDT            5.94            104         0              Normal
  06/04/2025 06 PM PDT            5.94            104         0              Normal
  06/04/2025 07 PM PDT            5.94            104         0              Normal
  06/04/2025 08 PM PDT            5.94            104         0              Normal
  06/04/2025 09 PM PDT            5.94            104         0              Normal
  06/04/2025 10 PM PDT            5.94            104         0              Normal
  06/04/2025 11 PM PDT            5.94            104         0              Normal
  06/05/2025 12 AM PDT            5.94            104         0              Normal
  06/05/2025 01 AM PDT            5.93            102         -              Normal
  06/05/2025 02 AM PDT            5.93            102         0              Normal
  06/05/2025 03 AM PDT            5.93            102         0              Normal
  06/05/2025 04 AM PDT            5.93            102         0              Normal
  06/05/2025 05 AM PDT            5.93            102         0              Normal
  06/05/2025 06 AM PDT            5.93            102         0              Normal
  06/05/2025 07 AM PDT            5.93            102         0              Normal
  06/05/2025 08 AM PDT            5.93            102         0              Normal
  06/05/2025 09 AM PDT            5.93            102         0              Normal
  06/05/2025 10 AM PDT            5.93            102         0              Normal
  06/05/2025 11 AM PDT            5.93            102         0              Normal
  06/05/2025 12 PM PDT            5.93            102         0              Normal
  06/05/2025 01 PM PDT            5.93            102         0              Normal
  06/05/2025 02 PM PDT            5.93            102         0              Normal
  06/05/2025 03 PM PDT            5.93            102         0              Normal
  06/05/2025 04 PM PDT            5.93            102         0              Normal
  06/05/2025 05 PM PDT            5.92            100         -              Normal
  06/05/2025 06 PM PDT            5.92            100         0              Normal
  06/05/2025 07 PM PDT            5.92            100         0              Normal
  06/05/2025 08 PM PDT            5.92            100         0              Normal
  06/05/2025 09 PM PDT            5.92            100         0              Normal
  06/05/2025 10 PM PDT            5.92            100         0              Normal
  06/05/2025 11 PM PDT            5.92            100         0              Normal
  06/06/2025 12 AM PDT            5.92            100         0              Normal
  06/06/2025 01 AM PDT            5.92            100         0              Normal
  06/06/2025 02 AM PDT            5.92            100         0              Normal
  06/06/2025 03 AM PDT            5.92            100         0              Normal
  06/06/2025 04 AM PDT            5.92            100         0              Normal
  06/06/2025 05 AM PDT            5.92            100         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.