The emergency declaration applies to the counties of Amador, Glenn, Lake, Mendocino and Sonoma.
Flooding and mudslides have occurred across the state due to the weather.
California governor Gavin Newson previously declared a state of emergency to apply in 21 countries on February 21.
The proclamation instructed state officials to request federal support in dealing with flooding, mudslides and infrastructure damage.
Flooding in California has already led to the death of a man in one county, and the worst flooding in twenty years in another.
The worst of the flooding is concentrated in the northern part of the state, where all five counties covered by the emergency declaration are situated.
More than 2,000 buildings flooded in Sonoma County when the Russian River overflowed, flooding the town of Guerneville and the surrounding area.
Over the past three days up to 22 inches of rain fell on Vanado, a community situated to the north of San Francisco.
There are fears of avalanches in the Sierra Nevada mountains after seven feet of snow fell over the past three days.
Parts of Interstate 80 remain closed due to the volume of snow.
More to follow…