"The blue of Lake Tahoe is deeper and clearer than it's been in a long time, and it's not just the contrast with the bright white of the snow-plastered Sierra Nevada. The recently-released Lake Tahoe Clarity Report for 2022 finds in the last five months of last year, it was possible to see more than 70 feet below the surface. That's a 10-foot improvement over the year before. "It appears that this is due to a resurgence of microscopic animals known as zooplankton," said Dr. Geoffrey Schladow, director of the UC Davis Tahoe Environmental Research Center. "These zooplankton have the ability to literally clean the water, to filter out the things that cause clarity to be diminished." … " Read more from Capital Public Radio.