The U.S. Army Corps of Engineers has released water from two reservoirs in the foothills of the southern Sierra Nevada to meet President Donald Trump’s recent directive to funnel more water to Southern California, but some officials there question whether it will actually prove helpful.

After the tragic wildfires in Southern California, President Trump often attributed the disaster to what he said was a lack of water being sent from the northern part of the state, and vowed to fix the problem.