There are wildfires raging in the Big Sur area of California, fed by dried-out vegetation. I believe solar-heated evaporator rafts in San Francisco Bay could supply humidity to the air that is drawn into the bay area and pulled southeastward along the San Joaquin valley to replace air that rises from the desert areas in the south. I know how to make the rafts out of wood panels, painted black, that float just below the water surface, so that the absorbed solar energy heats only a small volume of water to a temperature high enough to achieve a useful evaporation rate. Because of the summertime temperature inversion over the bay area, there seems to be little chance of the rafts producing rain, but they will add to the humidity. My ideas and calculations are scattered and in disarray, but one thing is certain: there is too much water in the ocean and not enough fresh water where we need it.
One excuse for my disorganization is that I have been looking all over the world for evaporator raft applications. There are many applications for rafts in fresh water bodies, such as Lake Chelan in Washington State and the Twisp and Methow rivers. The Southwest Monsoon is now in progress over India. The past two years, it was disappointing, and reservoir levels are dangerously low. Evaporator rafts in the Arabian Sea would have to be surrounded with floating breakwaters. There are huge swells adding to the wave heights during the monsoon season. Rafts would have to be installed during calmer times to be ready for the monsoon season. It might be possible to install rafts in Indian reservoirs to better distribute the water when there is an adequate supply. Newsday reports the weather in foreign capitals for the previous day. Thunderstorms are frequently shown for New Delhi, so maybe they will have a good summer. More detailed reports on the Internet show good rainfall. I have not found a summary of reservoir levels yet.
Recent reports of satellite measurements show that water is being stored on land in aquifers and surface water bodies. I have to look up the references to see where this might be. Certainly not in California.