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*** IMPORTANT ***  Week of June 16 - Website Data Outage [View details]

MAD RIVER - ARCATA (ARCC1)
Latitude:
40.91º N
Longitude:
124.06º W
Elevation:
13 Feet
Location: Humboldt County in CA
River Group: North Coast
Forecast Issued: Jun 06 2025 at 7:49 AM PDT
Next Issuance: Jun 07 2025 at 9:00 AM PDT

Action/
Monitor:
15.0 Ft
Minor
Flood:
22.0 Ft
Moderate
Flood:
24.0 Ft
Major
Flood:
28.0 Ft

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Graphical River Forecast - MAD RIVER - ARCATA (ARCC1)Graphical River Forecast - MAD RIVER - ARCATA (ARCC1)

Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
2024
53,900
27.26
Jan 13, 2024
2023
33,500
22.27
Dec 30, 2022
2022
10,500
13.20
Jan 5, 2022
2021
13,000
14.28
Feb 15, 2021
2020
12,500
14.10
Jan 26, 2020
 Historical High Stage/Flow Events (Period of Record - Aug 1950 to Present) - Ranked by Flow
1964
81,000
30.70
Dec 22, 1964
1956
80,000
--
Dec 22, 1955
1953
75,000
--
Jan 17, 1953
1996
54,700
24.17
Dec 30, 1995

Location Photographs

ESRI™ Locator Map

Flood Impacts
33.0 FeetDisastrous flooding of all areas near the river from Blue Lake to the mouth. The river is forecast to exceed record levels. All roads in the vicinity of the river are likely to be innundated and travel will be severly restricted. Residents should be prepared to take appropriate action to protect lives and property. This would include homes in Blue Lake, Tyee City and the Arcata Bottoms, as well as US Highway 101 between Arcata and Mckinleyville.
32.0 FeetDisastrous flooding of all areas near the river from Blue Lake to the mouth. The river is forecast to approach record levels. All roads in the vicinity of the river are likely to be innundated and travel will be severly restricted. Residents should be prepared to take appropriate action to protect lives and property. This would include homes in Blue Lake, Tyee City and the Arcata Bottoms, as well as US Highway 101 between Arcata and Mckinleyville.
30.0 FeetExtensive, severe flooding of all low lying areas near the river from Blue Lake downstream to the mouth. Residents in these areas should be prepared to take appropriate action to protect lives and property. Critical locations include residential areas of Blue Lake, Tyee City, and the Arcata Bottoms, as well as US Highway 101 near Janes Road and areas near Giuntoli Lane.
28.0 FeetSevere flooding of all low lying areas near the river from Blue Lake downstream to the mouth. Residents in these areas should be prepared to take appropriate action to protect lives and property. This includes residential areas of Tyee City and the Arcata Bottoms, US Highway 101 near Janes Road, areas near Giuntoli Lane, and Mad River Beach Road.
26.0 FeetSevere flooding along Mad River Beach Road and extensive flooding of farmlands and other roads in the area. Flooding of residential areas around Tyee City is likely. Any low lying areas near the river could be flooded. Residents in these areas should be prepared to take appropriate action to protect lives and property.
24.0 FeetExtensive flooding along Mad River Beach Road and adjacent farmlands. Some homes along the river could be threatened. Flooding of roads to Tyee City. High tides and strong onshore winds will enhance flood impacts.
23.0 FeetSignificant flooding of portions of Mad River Beach Road and adjacent farmlands is likely. May cause water to flow across roads to Tyee City. High tides and strong, onshore winds will aggravate flood impacts.
22.0 FeetSignificant flooding of portions of Mad River Beach Road. Water may flow across roads to Tyee City. Flood impacts will be aggravated by high tides and strong, onshore winds.
21.0 FeetFlooding of Mad River Beach Road. Water may be flowing over roads to Tyee City. Flooding will be enhanced if the time of the crest is coincident with high tides and strong onshore winds.
18.0 FeetMinor flooding of Mad River Beach Road near Tyee City.
15.0 FeetMinor flooding begins on the Mad River Beach Road near Tyee City.