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 CaliforniaRiver Group: North Coast
Issuance Time: Dec 10 2018 at 8:11 AM PSTNext Issuance: Dec 10 2018 at 3:00 PM PST
Monitor Stage: 15.0 FeetFlood Stage: 22.0 Feet
Observed Data Credit
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Raw streamflow data is provided by the US Geological Survey (USGS).
View USGS Data for this station location.

Verification - Historical Graphical RVF
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Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
2017
29,600
19.82
Jan 10, 2017
2016
43,100
22.73
Jan 17, 2016
2015
21,100
16.39
Feb 7, 2015
2014
14,800
14.48
Mar 10, 2014
2013
42,500
22.67
Dec 2, 2012
 Historical High Stage/Flow Events (Period of Record - Aug 1950 to Present)
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
Official 7 Day National Weather Service Forecast   (CAZ103)
Rest of Today: Partly cloudy. Highs 49 to 59. Northwest wind up to 10 mph.

Tonight: Partly cloudy in the evening then becoming mostly cloudy. Patchy fog overnight. Lows 37 to 47. North wind around 10 mph shifting to the east overnight.

Tuesday: Mostly cloudy. Patchy fog in the morning. Slight chance of rain showers in the morning, then rain in the afternoon. Highs 50 to 60. Southeast wind up to 10 mph.

Tuesday Night: Mostly cloudy. Slight chance of rain. Lows 39 to 49. East wind around 10 mph.

Wednesday: Partly cloudy. Highs 53 to 63. North wind around 10 mph.

Wednesday Night and Thursday: Partly cloudy. Lows 34 to 44. Highs 53 to 63.

Thursday Night: Mostly cloudy. Chance of rain. Lows 38 to 48.

Friday: Rain. Highs 50 to 60.

Friday Night and Saturday: Mostly cloudy. Chance of rain. Lows 38 to 48. Highs 50 to 60.

Saturday Night and Sunday: Rain. Lows 40 to 50. Highs 50 to 62.
Impacts - E19 Information
15.0 FeetMinor flooding begins on the Mad River Beach Road near Tyee City.
18.0 FeetMinor flooding on Mad River Beach Road near Tyee City.
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.
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.
23.0 FeetSignificant flooding of portions of Mad River Beach Road and adjacent farm lands is likely. May cause water to flow across roads to Tyee City. High tides and strong onshore winds will aggravate flood impacts.
24.0 FeetExtensive flooding along Mad River Beach Road and adjacent farm lands. Some homes along the river could be threatened. Flooding of roads to Tyee City. High tides and strong onshore winds worsen impacts.
26.0 FeetSevere flooding along Mad River Beach Road and extensive flooding of farm lands 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.
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 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.
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 Arcata Bottoms, as well as US Highway 101 near Janes Road and areas near Giuntoli Lane.
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 inundated and travel will be severely 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.
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 inundated and travel will be severely 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.
Product Disclaimer

This river graphic is not intended to serve as a substitute for official flood watches, warnings, advisories, or statements issued by the NWS Eureka Weather Forecast Office. Observations are preliminary and subject to change. River levels identified as "forecast" should be consistent with those contained in official NWS products. River levels identified as "guidance" have significant uncertainty due to future weather or reservoir regulation and are provided for planning purposes only.