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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 10 2026 at 7:23 AM PDT | Next Issuance: | Jun 11 2026 at 9:00 AM PDT
| |
| 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: 06/10/2026 at 07:23 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 06/09/2026 at 09:00 PM PDT
# Maximum Observed Stage: 6.16 Feet
# Maximum Observed Flow: 115 cfs
#
# Earliest Date & Time of Maximum Forecast: 06/10/2026 at 08:00 AM PDT
# Maximum Forecast Stage: 6.14 Feet
# Maximum Forecast Flow: 110 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
06/05/2026 07 AM PDT 6.08 98 Normal
06/05/2026 08 AM PDT 6.08 98 0 Normal
06/05/2026 09 AM PDT 6.07 96 - Normal
06/05/2026 10 AM PDT 6.07 96 0 Normal
06/05/2026 11 AM PDT 6.07 96 0 Normal
06/05/2026 12 PM PDT 6.07 96 0 Normal
06/05/2026 01 PM PDT 6.08 98 + Normal
06/05/2026 02 PM PDT 6.08 98 0 Normal
06/05/2026 03 PM PDT 6.08 98 0 Normal
06/05/2026 04 PM PDT 6.09 100 + Normal
06/05/2026 05 PM PDT 6.09 100 0 Normal
06/05/2026 06 PM PDT 6.08 98 - Normal
06/05/2026 07 PM PDT 6.08 98 0 Normal
06/05/2026 08 PM PDT 6.08 98 0 Normal
06/05/2026 09 PM PDT 6.08 98 0 Normal
06/05/2026 10 PM PDT 6.08 98 0 Normal
06/05/2026 11 PM PDT 6.07 96 - Normal
06/06/2026 12 AM PDT 6.07 96 0 Normal
06/06/2026 01 AM PDT 6.07 96 0 Normal
06/06/2026 02 AM PDT 6.07 96 0 Normal
06/06/2026 03 AM PDT 6.06 94 - Normal
06/06/2026 04 AM PDT 6.06 94 0 Normal
06/06/2026 05 AM PDT 6.06 94 0 Normal
06/06/2026 06 AM PDT 6.06 94 0 Normal
06/06/2026 07 AM PDT 6.05 92 - Normal
06/06/2026 08 AM PDT 6.05 92 0 Normal
06/06/2026 09 AM PDT 6.05 92 0 Normal
06/06/2026 10 AM PDT 6.05 92 0 Normal
06/06/2026 11 AM PDT 6.05 92 0 Normal
06/06/2026 12 PM PDT 6.06 94 + Normal
06/06/2026 01 PM PDT 6.06 94 0 Normal
06/06/2026 02 PM PDT 6.05 92 - Normal
06/06/2026 03 PM PDT 6.05 92 0 Normal
06/06/2026 04 PM PDT 6.06 94 + Normal
06/06/2026 05 PM PDT 6.08 98 + Normal
06/06/2026 06 PM PDT 6.09 100 + Normal
06/06/2026 07 PM PDT 6.08 98 - Normal
06/06/2026 08 PM PDT 6.08 98 0 Normal
06/06/2026 09 PM PDT 6.09 100 + Normal
06/06/2026 10 PM PDT 6.08 98 - Normal
06/06/2026 11 PM PDT 6.07 96 - Normal
06/07/2026 12 AM PDT 6.06 94 - Normal
06/07/2026 01 AM PDT 6.05 92 - Normal
06/07/2026 02 AM PDT 6.07 96 + Normal
06/07/2026 03 AM PDT 6.07 96 0 Normal
06/07/2026 04 AM PDT 6.05 92 - Normal
06/07/2026 05 AM PDT 6.05 92 0 Normal
06/07/2026 06 AM PDT 6.05 92 0 Normal
06/07/2026 07 AM PDT 6.06 94 + Normal
06/07/2026 08 AM PDT 6.06 94 0 Normal
06/07/2026 09 AM PDT 6.06 94 0 Normal
06/07/2026 10 AM PDT 6.06 94 0 Normal
06/07/2026 11 AM PDT 6.07 96 + Normal
06/07/2026 12 PM PDT 6.06 94 - Normal
06/07/2026 01 PM PDT 6.06 94 0 Normal
06/07/2026 02 PM PDT 6.05 92 - Normal
06/07/2026 03 PM PDT 6.06 94 + Normal
06/07/2026 04 PM PDT 6.06 94 0 Normal
06/07/2026 05 PM PDT 6.07 96 + Normal
06/07/2026 06 PM PDT 6.08 98 + Normal
06/07/2026 07 PM PDT 6.08 98 0 Normal
06/07/2026 08 PM PDT 6.08 98 0 Normal
06/07/2026 09 PM PDT 6.08 98 0 Normal
06/07/2026 10 PM PDT 6.07 96 - Normal
06/07/2026 11 PM PDT 6.07 96 0 Normal
06/08/2026 12 AM PDT 6.06 94 - Normal
06/08/2026 01 AM PDT 6.04 90 - Normal
06/08/2026 02 AM PDT 6.03 89 - Normal
06/08/2026 03 AM PDT 6.03 89 0 Normal
06/08/2026 04 AM PDT 6.02 87 - Normal
06/08/2026 05 AM PDT 6.03 89 + Normal
06/08/2026 06 AM PDT 6.03 89 0 Normal
06/08/2026 07 AM PDT 6.02 87 - Normal
06/08/2026 08 AM PDT 6.02 87 0 Normal
06/08/2026 09 AM PDT 6.02 87 0 Normal
06/08/2026 10 AM PDT 6.03 89 + Normal
06/08/2026 11 AM PDT 6.06 94 + Normal
06/08/2026 12 PM PDT 6.07 96 + Normal
06/08/2026 01 PM PDT 6.08 98 + Normal
06/08/2026 02 PM PDT 6.09 100 + Normal
06/08/2026 03 PM PDT 6.09 100 0 Normal
06/08/2026 04 PM PDT 6.10 102 + Normal
06/08/2026 05 PM PDT 6.11 104 + Normal
06/08/2026 06 PM PDT 6.12 106 + Normal
06/08/2026 07 PM PDT 6.12 106 0 Normal
06/08/2026 08 PM PDT 6.13 108 + Normal
06/08/2026 09 PM PDT 6.13 108 0 Normal
06/08/2026 10 PM PDT 6.13 108 0 Normal
06/08/2026 11 PM PDT 6.12 106 - Normal
06/09/2026 12 AM PDT 6.12 106 0 Normal
06/09/2026 01 AM PDT 6.12 106 0 Normal
06/09/2026 02 AM PDT 6.10 102 - Normal
06/09/2026 03 AM PDT 6.10 102 0 Normal
06/09/2026 04 AM PDT 6.10 102 0 Normal
06/09/2026 05 AM PDT 6.11 104 + Normal
06/09/2026 06 AM PDT 6.11 104 0 Normal
06/09/2026 07 AM PDT 6.11 104 0 Normal
06/09/2026 08 AM PDT 6.10 102 - Normal
06/09/2026 09 AM PDT 6.10 102 0 Normal
06/09/2026 10 AM PDT 6.10 102 0 Normal
06/09/2026 11 AM PDT 6.10 102 0 Normal
06/09/2026 12 PM PDT 6.10 102 0 Normal
06/09/2026 01 PM PDT 6.10 102 0 Normal
06/09/2026 02 PM PDT 6.10 102 0 Normal
06/09/2026 03 PM PDT 6.12 106 + Normal
06/09/2026 04 PM PDT 6.14 110 + Normal
06/09/2026 05 PM PDT 6.15 113 + Normal
06/09/2026 06 PM PDT 6.15 113 0 Normal
06/09/2026 07 PM PDT 6.15 113 0 Normal
06/09/2026 08 PM PDT 6.16 115 + Normal
06/09/2026 09 PM PDT 6.16 115 0 Normal
06/09/2026 10 PM PDT 6.15 113 - Normal
06/09/2026 11 PM PDT 6.15 113 0 Normal
06/10/2026 12 AM PDT 6.14 110 - Normal
06/10/2026 01 AM PDT 6.13 108 - Normal
06/10/2026 02 AM PDT 6.14 110 + Normal
06/10/2026 03 AM PDT 6.14 110 0 Normal
06/10/2026 04 AM PDT 6.14 110 0 Normal
06/10/2026 05 AM PDT 6.14 110 0 Normal
06/10/2026 06 AM PDT 6.14 110 0 Normal
06/10/2026 07 AM PDT 6.14 110 0 Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
06/10/2026 08 AM PDT 6.14 110 Normal
06/10/2026 09 AM PDT 6.13 108 - Normal
06/10/2026 10 AM PDT 6.13 108 0 Normal
06/10/2026 11 AM PDT 6.13 108 0 Normal
06/10/2026 12 PM PDT 6.13 108 0 Normal
06/10/2026 01 PM PDT 6.13 108 0 Normal
06/10/2026 02 PM PDT 6.13 108 0 Normal
06/10/2026 03 PM PDT 6.13 108 0 Normal
06/10/2026 04 PM PDT 6.13 108 0 Normal
06/10/2026 05 PM PDT 6.13 108 0 Normal
06/10/2026 06 PM PDT 6.13 108 0 Normal
06/10/2026 07 PM PDT 6.13 108 0 Normal
06/10/2026 08 PM PDT 6.13 108 0 Normal
06/10/2026 09 PM PDT 6.13 108 0 Normal
06/10/2026 10 PM PDT 6.12 106 - Normal
06/10/2026 11 PM PDT 6.12 106 0 Normal
06/11/2026 12 AM PDT 6.12 106 0 Normal
06/11/2026 01 AM PDT 6.12 106 0 Normal
06/11/2026 02 AM PDT 6.12 106 0 Normal
06/11/2026 03 AM PDT 6.12 106 0 Normal
06/11/2026 04 AM PDT 6.12 106 0 Normal
06/11/2026 05 AM PDT 6.12 106 0 Normal
06/11/2026 06 AM PDT 6.12 106 0 Normal
06/11/2026 07 AM PDT 6.12 106 0 Normal
06/11/2026 08 AM PDT 6.12 106 0 Normal
06/11/2026 09 AM PDT 6.12 106 0 Normal
06/11/2026 10 AM PDT 6.12 106 0 Normal
06/11/2026 11 AM PDT 6.12 106 0 Normal
06/11/2026 12 PM PDT 6.12 106 0 Normal
06/11/2026 01 PM PDT 6.12 106 0 Normal
06/11/2026 02 PM PDT 6.12 106 0 Normal
06/11/2026 03 PM PDT 6.12 106 0 Normal
06/11/2026 04 PM PDT 6.12 106 0 Normal
06/11/2026 05 PM PDT 6.12 106 0 Normal
06/11/2026 06 PM PDT 6.12 106 0 Normal
06/11/2026 07 PM PDT 6.12 106 0 Normal
06/11/2026 08 PM PDT 6.12 106 0 Normal
06/11/2026 09 PM PDT 6.12 106 0 Normal
06/11/2026 10 PM PDT 6.12 106 0 Normal
06/11/2026 11 PM PDT 6.12 106 0 Normal
06/12/2026 12 AM PDT 6.12 106 0 Normal
06/12/2026 01 AM PDT 6.12 106 0 Normal
06/12/2026 02 AM PDT 6.12 106 0 Normal
06/12/2026 03 AM PDT 6.12 106 0 Normal
06/12/2026 04 AM PDT 6.12 106 0 Normal
06/12/2026 05 AM PDT 6.12 106 0 Normal
06/12/2026 06 AM PDT 6.12 106 0 Normal
06/12/2026 07 AM PDT 6.12 106 0 Normal
06/12/2026 08 AM PDT 6.11 104 - Normal
06/12/2026 09 AM PDT 6.11 104 0 Normal
06/12/2026 10 AM PDT 6.11 104 0 Normal
06/12/2026 11 AM PDT 6.11 104 0 Normal
06/12/2026 12 PM PDT 6.11 104 0 Normal
06/12/2026 01 PM PDT 6.11 104 0 Normal
06/12/2026 02 PM PDT 6.11 104 0 Normal
06/12/2026 03 PM PDT 6.11 104 0 Normal
06/12/2026 04 PM PDT 6.11 104 0 Normal
06/12/2026 05 PM PDT 6.11 104 0 Normal
06/12/2026 06 PM PDT 6.11 104 0 Normal
06/12/2026 07 PM PDT 6.11 104 0 Normal
06/12/2026 08 PM PDT 6.11 104 0 Normal
06/12/2026 09 PM PDT 6.11 104 0 Normal
06/12/2026 10 PM PDT 6.11 104 0 Normal
06/12/2026 11 PM PDT 6.11 104 0 Normal
06/13/2026 12 AM PDT 6.11 104 0 Normal
06/13/2026 01 AM PDT 6.11 104 0 Normal
06/13/2026 02 AM PDT 6.11 104 0 Normal
06/13/2026 03 AM PDT 6.11 104 0 Normal
06/13/2026 04 AM PDT 6.11 104 0 Normal
06/13/2026 05 AM PDT 6.11 104 0 Normal
06/13/2026 06 AM PDT 6.11 104 0 Normal
06/13/2026 07 AM PDT 6.11 104 0 Normal
06/13/2026 08 AM PDT 6.11 104 0 Normal
06/13/2026 09 AM PDT 6.11 104 0 Normal
06/13/2026 10 AM PDT 6.11 104 0 Normal
06/13/2026 11 AM PDT 6.11 104 0 Normal
06/13/2026 12 PM PDT 6.11 104 0 Normal
06/13/2026 01 PM PDT 6.11 104 0 Normal
06/13/2026 02 PM PDT 6.11 104 0 Normal
06/13/2026 03 PM PDT 6.11 104 0 Normal
06/13/2026 04 PM PDT 6.11 104 0 Normal
06/13/2026 05 PM PDT 6.10 102 - Normal
06/13/2026 06 PM PDT 6.10 102 0 Normal
06/13/2026 07 PM PDT 6.10 102 0 Normal
06/13/2026 08 PM PDT 6.10 102 0 Normal
06/13/2026 09 PM PDT 6.10 102 0 Normal
06/13/2026 10 PM PDT 6.10 102 0 Normal
06/13/2026 11 PM PDT 6.10 102 0 Normal
06/14/2026 12 AM PDT 6.10 102 0 Normal
06/14/2026 01 AM PDT 6.10 102 0 Normal
06/14/2026 02 AM PDT 6.10 102 0 Normal
06/14/2026 03 AM PDT 6.10 102 0 Normal
06/14/2026 04 AM PDT 6.10 102 0 Normal
06/14/2026 05 AM PDT 6.10 102 0 Normal
06/14/2026 06 AM PDT 6.10 102 0 Normal
06/14/2026 07 AM PDT 6.10 102 0 Normal
06/14/2026 08 AM PDT 6.10 102 0 Normal
06/14/2026 09 AM PDT 6.10 102 0 Normal
06/14/2026 10 AM PDT 6.10 102 0 Normal
06/14/2026 11 AM PDT 6.10 102 0 Normal
06/14/2026 12 PM PDT 6.10 102 0 Normal
06/14/2026 01 PM PDT 6.10 102 0 Normal
06/14/2026 02 PM PDT 6.10 102 0 Normal
06/14/2026 03 PM PDT 6.10 102 0 Normal
06/14/2026 04 PM PDT 6.10 102 0 Normal
06/14/2026 05 PM PDT 6.10 102 0 Normal
06/14/2026 06 PM PDT 6.10 102 0 Normal
06/14/2026 07 PM PDT 6.10 102 0 Normal
06/14/2026 08 PM PDT 6.10 102 0 Normal
06/14/2026 09 PM PDT 6.10 102 0 Normal
06/14/2026 10 PM PDT 6.10 102 0 Normal
06/14/2026 11 PM PDT 6.09 100 - Normal
06/15/2026 12 AM PDT 6.09 100 0 Normal
06/15/2026 01 AM PDT 6.09 100 0 Normal
06/15/2026 02 AM PDT 6.09 100 0 Normal
06/15/2026 03 AM PDT 6.09 100 0 Normal
06/15/2026 04 AM PDT 6.09 100 0 Normal
06/15/2026 05 AM PDT 6.09 100 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.
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