They have been actively working to mitigate just that for the last few decades at least. It is challenging and expensive work despite how easy it is to ask why

They have been actively working to mitigate just that for the last few decades at least. It is challenging and expensive work despite how easy it is to ask why we don't just collect all the rain that hits the land. Last year with the historic rainfall, LA county captured enough rain to meet the drinking water needs of 5 million people.