The President called to get an update on the dry conditions, as 17 communities are in danger of running out of water within four months.
The White House says the President told Brown the federal government will keep working to support California's response to the drought.
The White House says the National Drought Resilience Partnership is coordinating the federal response.
The Federal Emergency Management Agency and the Agriculture Department are involved in the effort.
California regulators are responding to the drought by adopting tighter landscaping rules for new construction and renovation. That means new water limits for residential, commercial, school and hospital lawns and other plantings.
A University of the Pacific economic forecast shows that drought has had a "relatively mild" impact on California's economy.
Another water district in Sacramento County is offering cash rebates for customers to remove grass.
NOAA’s Climate Prediction Center and meteorologists in other countries show that strong-to-moderate El Niño conditions are present in the tropical Pacific. But it won't end the drought in California.
Stream fishing around Lake Tahoe and western Nevada is struggling because of the drought. But fishing may actually be better at the lake itself.