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Arizona's solar-over-canal project will tackle its major drought issue
(interestingengineering.com)
This is a most excellent place for technology news and articles.
They should try this at those retaining ponds where they filled them with black balls.
There are several companies working on solar covers for reservoirs. I agree, seems like a win win. Reduce evaporation and have a large, level, "field" for solar arrays.