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MAD RIVER - ARCATA (ARCC1)
| Latitude: 40.91º N | Longitude: 124.06º W | Elevation: 13 Feet | | Forecast Type: Official Location |
| Location: Humboldt County in California | Bulletin Group: North Coast | River Group: North Coast |
| Issuance Time: | Jun 03 2026 at 6:56 AM PDT | Next Issuance: | Jun 04 2026 at 9:00 AM PDT
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| Action/Monitor: 15.0 Feet | Minor Flood: 22.0 Feet | Moderate Flood: 24.0 Feet | Major Flood: 28.0 Feet |
# Tabular Observed and Forecast Hydrograph Information
#
# Location: Mad River - Arcata (ARCC1)
#
# File Generation Time: 06/03/2026 at 06:56 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 05/29/2026 at 10:00 PM PDT
# Maximum Observed Stage: 6.31 Feet
# Maximum Observed Flow: 150 cfs
#
# Earliest Date & Time of Maximum Forecast: 06/04/2026 at 04:00 AM PDT
# Maximum Forecast Stage: 6.20 Feet
# Maximum Forecast Flow: 124 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
05/29/2026 06 AM PDT 6.29 145 Normal
05/29/2026 07 AM PDT 6.29 145 0 Normal
05/29/2026 08 AM PDT 6.28 142 - Normal
05/29/2026 09 AM PDT 6.28 142 0 Normal
05/29/2026 10 AM PDT 6.29 145 + Normal
05/29/2026 11 AM PDT 6.29 145 0 Normal
05/29/2026 12 PM PDT 6.29 145 0 Normal
05/29/2026 01 PM PDT 6.27 140 - Normal
05/29/2026 02 PM PDT 6.26 137 - Normal
05/29/2026 03 PM PDT 6.28 142 + Normal
05/29/2026 04 PM PDT 6.29 145 + Normal
05/29/2026 05 PM PDT 6.31 150 + Normal
05/29/2026 06 PM PDT 6.31 150 0 Normal
05/29/2026 07 PM PDT 6.31 150 0 Normal
05/29/2026 08 PM PDT 6.31 150 0 Normal
05/29/2026 09 PM PDT 6.31 150 0 Normal
05/29/2026 10 PM PDT 6.31 150 0 Normal
05/29/2026 11 PM PDT 6.29 145 - Normal
05/30/2026 12 AM PDT 6.28 142 - Normal
05/30/2026 01 AM PDT 6.27 140 - Normal
05/30/2026 02 AM PDT 6.27 140 0 Normal
05/30/2026 03 AM PDT 6.26 137 - Normal
05/30/2026 04 AM PDT 6.26 137 0 Normal
05/30/2026 05 AM PDT 6.26 137 0 Normal
05/30/2026 06 AM PDT 6.26 137 0 Normal
05/30/2026 07 AM PDT 6.26 137 0 Normal
05/30/2026 08 AM PDT 6.26 137 0 Normal
05/30/2026 09 AM PDT 6.27 140 + Normal
05/30/2026 10 AM PDT 6.28 142 + Normal
05/30/2026 11 AM PDT 6.28 142 0 Normal
05/30/2026 12 PM PDT 6.27 140 - Normal
05/30/2026 01 PM PDT 6.26 137 - Normal
05/30/2026 02 PM PDT 6.26 137 0 Normal
05/30/2026 03 PM PDT 6.26 137 0 Normal
05/30/2026 04 PM PDT 6.27 140 + Normal
05/30/2026 05 PM PDT 6.28 142 + Normal
05/30/2026 06 PM PDT 6.29 145 + Normal
05/30/2026 07 PM PDT 6.29 145 0 Normal
05/30/2026 08 PM PDT 6.29 145 0 Normal
05/30/2026 09 PM PDT 6.29 145 0 Normal
05/30/2026 10 PM PDT 6.28 142 - Normal
05/30/2026 11 PM PDT 6.27 140 - Normal
05/31/2026 12 AM PDT 6.27 140 0 Normal
05/31/2026 01 AM PDT 6.27 140 0 Normal
05/31/2026 02 AM PDT 6.26 137 - Normal
05/31/2026 03 AM PDT 6.25 135 - Normal
05/31/2026 04 AM PDT 6.25 135 0 Normal
05/31/2026 05 AM PDT 6.24 133 - Normal
05/31/2026 06 AM PDT 6.24 133 0 Normal
05/31/2026 07 AM PDT 6.24 133 0 Normal
05/31/2026 08 AM PDT 6.24 133 0 Normal
05/31/2026 09 AM PDT 6.24 133 0 Normal
05/31/2026 10 AM PDT 6.24 133 0 Normal
05/31/2026 11 AM PDT 6.24 133 0 Normal
05/31/2026 12 PM PDT 6.25 135 + Normal
05/31/2026 01 PM PDT 6.23 130 - Normal
05/31/2026 02 PM PDT 6.23 130 0 Normal
05/31/2026 03 PM PDT 6.24 133 + Normal
05/31/2026 04 PM PDT 6.24 133 0 Normal
05/31/2026 05 PM PDT 6.26 137 + Normal
05/31/2026 06 PM PDT 6.26 137 0 Normal
05/31/2026 07 PM PDT 6.26 137 0 Normal
05/31/2026 08 PM PDT 6.26 137 0 Normal
05/31/2026 09 PM PDT 6.26 137 0 Normal
05/31/2026 10 PM PDT 6.26 137 0 Normal
05/31/2026 11 PM PDT 6.25 135 - Normal
06/01/2026 12 AM PDT 6.24 133 - Normal
06/01/2026 01 AM PDT 6.23 130 - Normal
06/01/2026 02 AM PDT 6.23 130 0 Normal
06/01/2026 03 AM PDT 6.22 128 - Normal
06/01/2026 04 AM PDT 6.22 128 0 Normal
06/01/2026 05 AM PDT 6.21 126 - Normal
06/01/2026 06 AM PDT 6.21 126 0 Normal
06/01/2026 07 AM PDT 6.21 126 0 Normal
06/01/2026 08 AM PDT 6.21 126 0 Normal
06/01/2026 09 AM PDT 6.21 126 0 Normal
06/01/2026 10 AM PDT 6.21 126 0 Normal
06/01/2026 11 AM PDT 6.21 126 0 Normal
06/01/2026 12 PM PDT 6.20 124 - Normal
06/01/2026 01 PM PDT 6.20 124 0 Normal
06/01/2026 02 PM PDT 6.20 124 0 Normal
06/01/2026 03 PM PDT 6.20 124 0 Normal
06/01/2026 04 PM PDT 6.21 126 + Normal
06/01/2026 05 PM PDT 6.22 128 + Normal
06/01/2026 06 PM PDT 6.23 130 + Normal
06/01/2026 07 PM PDT 6.24 133 + Normal
06/01/2026 08 PM PDT 6.24 133 0 Normal
06/01/2026 09 PM PDT 6.24 133 0 Normal
06/01/2026 10 PM PDT 6.24 133 0 Normal
06/01/2026 11 PM PDT 6.23 130 - Normal
06/02/2026 12 AM PDT 6.23 130 0 Normal
06/02/2026 01 AM PDT 6.22 128 - Normal
06/02/2026 02 AM PDT 6.21 126 - Normal
06/02/2026 03 AM PDT 6.21 126 0 Normal
06/02/2026 04 AM PDT 6.21 126 0 Normal
06/02/2026 05 AM PDT 6.21 126 0 Normal
06/02/2026 06 AM PDT 6.22 128 + Normal
06/02/2026 07 AM PDT 6.21 126 - Normal
06/02/2026 08 AM PDT 6.21 126 0 Normal
06/02/2026 09 AM PDT 6.20 124 - Normal
06/02/2026 10 AM PDT 6.19 121 - Normal
06/02/2026 11 AM PDT 6.18 119 - Normal
06/02/2026 12 PM PDT 6.18 119 0 Normal
06/02/2026 01 PM PDT 6.19 121 + Normal
06/02/2026 02 PM PDT 6.19 121 0 Normal
06/02/2026 03 PM PDT 6.20 124 + Normal
06/02/2026 04 PM PDT 6.21 126 + Normal
06/02/2026 05 PM PDT 6.22 128 + Normal
06/02/2026 06 PM PDT 6.22 128 0 Normal
06/02/2026 07 PM PDT 6.22 128 0 Normal
06/02/2026 08 PM PDT 6.22 128 0 Normal
06/02/2026 09 PM PDT 6.22 128 0 Normal
06/02/2026 10 PM PDT 6.23 130 + Normal
06/02/2026 11 PM PDT 6.21 126 - Normal
06/03/2026 12 AM PDT 6.20 124 - Normal
06/03/2026 01 AM PDT 6.19 121 - Normal
06/03/2026 02 AM PDT 6.17 117 - Normal
06/03/2026 03 AM PDT 6.17 117 0 Normal
06/03/2026 04 AM PDT 6.16 115 - Normal
06/03/2026 05 AM PDT 6.17 117 + Normal
06/03/2026 06 AM PDT 6.17 117 0 Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
06/03/2026 07 AM PDT 6.17 117 Normal
06/03/2026 08 AM PDT 6.17 117 0 Normal
06/03/2026 09 AM PDT 6.17 117 0 Normal
06/03/2026 10 AM PDT 6.17 117 0 Normal
06/03/2026 11 AM PDT 6.18 119 + Normal
06/03/2026 12 PM PDT 6.18 119 0 Normal
06/03/2026 01 PM PDT 6.18 119 0 Normal
06/03/2026 02 PM PDT 6.18 119 0 Normal
06/03/2026 03 PM PDT 6.18 119 0 Normal
06/03/2026 04 PM PDT 6.18 119 0 Normal
06/03/2026 05 PM PDT 6.18 119 0 Normal
06/03/2026 06 PM PDT 6.19 121 + Normal
06/03/2026 07 PM PDT 6.19 121 0 Normal
06/03/2026 08 PM PDT 6.19 121 0 Normal
06/03/2026 09 PM PDT 6.19 121 0 Normal
06/03/2026 10 PM PDT 6.19 121 0 Normal
06/03/2026 11 PM PDT 6.19 121 0 Normal
06/04/2026 12 AM PDT 6.19 121 0 Normal
06/04/2026 01 AM PDT 6.19 121 0 Normal
06/04/2026 02 AM PDT 6.19 121 0 Normal
06/04/2026 03 AM PDT 6.19 121 0 Normal
06/04/2026 04 AM PDT 6.20 124 + Normal
06/04/2026 05 AM PDT 6.20 124 0 Normal
06/04/2026 06 AM PDT 6.20 124 0 Normal
06/04/2026 07 AM PDT 6.20 124 0 Normal
06/04/2026 08 AM PDT 6.20 124 0 Normal
06/04/2026 09 AM PDT 6.20 124 0 Normal
06/04/2026 10 AM PDT 6.20 124 0 Normal
06/04/2026 11 AM PDT 6.20 124 0 Normal
06/04/2026 12 PM PDT 6.20 124 0 Normal
06/04/2026 01 PM PDT 6.20 124 0 Normal
06/04/2026 02 PM PDT 6.20 124 0 Normal
06/04/2026 03 PM PDT 6.20 124 0 Normal
06/04/2026 04 PM PDT 6.20 124 0 Normal
06/04/2026 05 PM PDT 6.20 124 0 Normal
06/04/2026 06 PM PDT 6.20 124 0 Normal
06/04/2026 07 PM PDT 6.20 124 0 Normal
06/04/2026 08 PM PDT 6.20 124 0 Normal
06/04/2026 09 PM PDT 6.20 124 0 Normal
06/04/2026 10 PM PDT 6.20 124 0 Normal
06/04/2026 11 PM PDT 6.20 124 0 Normal
06/05/2026 12 AM PDT 6.20 124 0 Normal
06/05/2026 01 AM PDT 6.20 124 0 Normal
06/05/2026 02 AM PDT 6.20 124 0 Normal
06/05/2026 03 AM PDT 6.20 124 0 Normal
06/05/2026 04 AM PDT 6.20 124 0 Normal
06/05/2026 05 AM PDT 6.20 124 0 Normal
06/05/2026 06 AM PDT 6.20 124 0 Normal
06/05/2026 07 AM PDT 6.20 124 0 Normal
06/05/2026 08 AM PDT 6.20 124 0 Normal
06/05/2026 09 AM PDT 6.19 121 - Normal
06/05/2026 10 AM PDT 6.19 121 0 Normal
06/05/2026 11 AM PDT 6.19 121 0 Normal
06/05/2026 12 PM PDT 6.19 121 0 Normal
06/05/2026 01 PM PDT 6.19 121 0 Normal
06/05/2026 02 PM PDT 6.19 121 0 Normal
06/05/2026 03 PM PDT 6.19 121 0 Normal
06/05/2026 04 PM PDT 6.19 121 0 Normal
06/05/2026 05 PM PDT 6.19 121 0 Normal
06/05/2026 06 PM PDT 6.19 121 0 Normal
06/05/2026 07 PM PDT 6.19 121 0 Normal
06/05/2026 08 PM PDT 6.19 121 0 Normal
06/05/2026 09 PM PDT 6.19 121 0 Normal
06/05/2026 10 PM PDT 6.19 121 0 Normal
06/05/2026 11 PM PDT 6.19 121 0 Normal
06/06/2026 12 AM PDT 6.19 121 0 Normal
06/06/2026 01 AM PDT 6.19 121 0 Normal
06/06/2026 02 AM PDT 6.19 121 0 Normal
06/06/2026 03 AM PDT 6.19 121 0 Normal
06/06/2026 04 AM PDT 6.19 121 0 Normal
06/06/2026 05 AM PDT 6.19 121 0 Normal
06/06/2026 06 AM PDT 6.19 121 0 Normal
06/06/2026 07 AM PDT 6.19 121 0 Normal
06/06/2026 08 AM PDT 6.19 121 0 Normal
06/06/2026 09 AM PDT 6.19 121 0 Normal
06/06/2026 10 AM PDT 6.19 121 0 Normal
06/06/2026 11 AM PDT 6.19 121 0 Normal
06/06/2026 12 PM PDT 6.19 121 0 Normal
06/06/2026 01 PM PDT 6.19 121 0 Normal
06/06/2026 02 PM PDT 6.18 119 - Normal
06/06/2026 03 PM PDT 6.18 119 0 Normal
06/06/2026 04 PM PDT 6.18 119 0 Normal
06/06/2026 05 PM PDT 6.18 119 0 Normal
06/06/2026 06 PM PDT 6.18 119 0 Normal
06/06/2026 07 PM PDT 6.18 119 0 Normal
06/06/2026 08 PM PDT 6.18 119 0 Normal
06/06/2026 09 PM PDT 6.18 119 0 Normal
06/06/2026 10 PM PDT 6.18 119 0 Normal
06/06/2026 11 PM PDT 6.18 119 0 Normal
06/07/2026 12 AM PDT 6.18 119 0 Normal
06/07/2026 01 AM PDT 6.18 119 0 Normal
06/07/2026 02 AM PDT 6.18 119 0 Normal
06/07/2026 03 AM PDT 6.18 119 0 Normal
06/07/2026 04 AM PDT 6.18 119 0 Normal
06/07/2026 05 AM PDT 6.18 119 0 Normal
06/07/2026 06 AM PDT 6.18 119 0 Normal
06/07/2026 07 AM PDT 6.18 119 0 Normal
06/07/2026 08 AM PDT 6.18 119 0 Normal
06/07/2026 09 AM PDT 6.18 119 0 Normal
06/07/2026 10 AM PDT 6.18 119 0 Normal
06/07/2026 11 AM PDT 6.18 119 0 Normal
06/07/2026 12 PM PDT 6.18 119 0 Normal
06/07/2026 01 PM PDT 6.18 119 0 Normal
06/07/2026 02 PM PDT 6.18 119 0 Normal
06/07/2026 03 PM PDT 6.18 119 0 Normal
06/07/2026 04 PM PDT 6.18 119 0 Normal
06/07/2026 05 PM PDT 6.18 119 0 Normal
06/07/2026 06 PM PDT 6.18 119 0 Normal
06/07/2026 07 PM PDT 6.17 117 - Normal
06/07/2026 08 PM PDT 6.17 117 0 Normal
06/07/2026 09 PM PDT 6.17 117 0 Normal
06/07/2026 10 PM PDT 6.17 117 0 Normal
06/07/2026 11 PM PDT 6.17 117 0 Normal
06/08/2026 12 AM PDT 6.17 117 0 Normal
06/08/2026 01 AM PDT 6.17 117 0 Normal
06/08/2026 02 AM PDT 6.17 117 0 Normal
06/08/2026 03 AM PDT 6.17 117 0 Normal
06/08/2026 04 AM PDT 6.17 117 0 Normal
06/08/2026 05 AM PDT 6.17 117 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.
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