LA ‘black ball’ reservoir rollout potential ‘disaster’ in the making, say experts

LA ‘black ball’ reservoir rollout potential ‘disaster’ in the making, say experts.Any color covering will help stop wind-driven evaporation, said Robert Shibatani. principal hydrologist for the Sacramento-based environmental consultant The Shibitani Group. But when it comes to the hot summer sun sucking water out of the reservoir, color is everything, he said.

“Ideally you would want a chrome surface,” he said. “The worst would be matte black, which has a reflectivity close to zero.”

Biologist Nathan Krekula, a professor of health science at Bryant & Stratton College in Milwaukee, said black balls will absorb heat, transfer it to the water and cause evaporation. And he agreed with MacLeod that the heat will prove hospitable to bacteria

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