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: Jul 28 2015 at 7:30 AM PDTNext Issuance: Jul 29 2015 at 9:00 AM PDT
Monitor Stage: 15.0 FeetFlood Stage: 22.0 Feet
Verification - Historical Graphical RVF
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Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
2014
14,800
14.48
Mar 10, 2014
2013
42,500
22.67
Dec 2, 2012
2012
21,000
16.65
Mar 30, 2012
2011
30,700
19.56
Dec 29, 2010
2010
14,000
13.97
Feb 26, 2010
 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   (CAZ001)
Tonight: Clear. Lows 54 to 64. North wind 5 to 15 mph shifting to the northeast around 15 mph overnight.

Wednesday: Sunny. Highs 71 to 81 at the coast and 84 to 94 inland. East wind 5 to 15 mph shifting to the northwest around 5 mph in the afternoon.

Wednesday Night: Clear. Lows 57 to 67. West wind around 5 mph shifting to the east overnight.

Thursday: Sunny. Highs 68 to 78 at the coast and 81 to 91 inland. West wind around 5 mph.

Thursday Night: Mostly clear. Lows 55 to 65. North wind around 5 mph.

Friday: Partly cloudy. Highs 67 to 77 at the coast and 80 to 90 inland. Northwest wind around 5 mph.

Friday Night through Monday: Partly cloudy. Lows 53 to 63. Highs 65 to 75 at the coast and 78 to 88 inland.

Monday Night: Partly cloudy in the evening then becoming mostly cloudy. Patchy fog. Lows 51 to 61.

Tuesday: Mostly cloudy in the morning then clearing. Highs 63 to 73 at the coast and 72 to 82 inland.
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.

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.