Tag: water supply
One of California's oldest environmental battles is on the San Francisco ballot. Hetch Hetchy Valley in Yosemite National Park holds most of San Francisco's water supply. But some environmental groups want to turn back the clock.
California’s Delta has a rich agricultural legacy, but farming there can be a risky business. Dozens of farms have been flooded over the past half century as aging levees have collapsed. Now, scientists are encouraging farmers to switch to a new crop. Instead of growing vegetables, they’d grow something that has all but disappeared in the Delta: wetlands.
California's Delta is a far cry from what it once was. About 97% of its historic marshes have been lost and scientists aren’t quite sure what the Delta once looked like. Now, a Bay Area group is working to reconstruct it through ecological detective work.
It's been a harsh winter across the US. Snow has blanketed the Sierra Nevada, where the snowpack is well above normal. Lots of snow means good skiing, but it also means an increased danger of avalanches. Lauren Sommer travels to Lake Tahoe where researchers are trying to understand the inner workings of snow a little bit better.