Welcome drifts of fresh snow awaited California’s water managers on their late-winter survey of the vital Sierra Nevada snowpack Monday after a massive winter storm slowed the state’s plunge back into drought. The storm piled up to 8 feet (2.4 meters) of new snow in the mountains from late last week through the weekend, forcing Department of Water Resources officials to postpone the measurement for a few days.
Two tunnels, one or none? The question continues to swirl around plans to perform major surgery on the sickly heart of California’s water system. Confronted with a shortage of funding, state officials announced last month that they would move ahead with the construction of one giant water tunnel under the Sacramento-San Joaquin Delta rather than two. But the announcement did little to settle the fate of the project, which Gov. Jerry Brown’s administration considers vital to sustaining water deliveries to one of the country’s richest agricultural regions and the urban sprawl of Southern California.
Drought conditions have returned to much of the Desert Southwest and southern Plains due, in part, to a dry winter that left the land parched in several states.Using data from the U.S. National Drought Monitor, NASA compiled a map that shows the areas of the country that have fallen back into some of the worst drought categories just nine months after 95 percent of the nation was drought-free. The map, using data acquired Feb. 27, shows extreme drought taking over parts of Texas and the Desert Southwest, with moderate or severe drought seen in the Southeast, northern Plains and parts of California.
More rain and snow is on the way. It’s expected to be dry today, Tuesday and through Wednesday night in the South County with the high hitting 70 degrees before cooling off again, according to the National Weather Service (NWS). But then Wednesday night another storm will move into the area bringing up to a quarter of an inch rain to Manteca through Friday. Yosemite Valley is expected to receive a half inch of rain.
After one year of torrential respite, drought may have returned to California, and with it, a renewal of the state’s perpetual conflict over water management. State and federal water systems have told farmers not to expect more than a fifth of their paper allocations, the state Water Resources Control Board is weighing a new regime of mandatory conservation, and supporters of more reservoirs are complaining about the glacial pace of spending $2.7 billion set aside in a water bond for more storage.
Heat waves, droughts and floods are climate trends that will force California farmers to change some practices — including what they grow — to continue producing yields that historically have fed people nationwide, a new study by the University of California says. Researchers reviewed 89 studies on California climate trends and impacts on the state’s diverse agriculture industry to predict how the industry must adjust through the end of the 21st century.
Scientists have found dramatically declining snowpack across the American West over the past six decades that will likely cause water shortages in the region that cannot be managed by building new reservoirs, according to a study published Friday. The study led by scientists from Oregon State University and the University of California, Los Angeles found drops in snow measurements at more than 90 percent of regional snow monitoring sites that have consistently tracked snow levels since 1955, said Philip Mote, director of the Oregon Climate Change Research Institute at Oregon State University.
Despite this week’s rain and snow, California is back to dry conditions again after a very wet 2017. With about four weeks left in the normal wet season, the Sacramento Valley is at about 65% of average precipitation (less than 1/3 of last year’s precipitation). The southern Central Valley has less than 50% of average precipitation and southern California is still drier. Snowpack is much less, at 37% statewide. Surface reservoirs, which almost all refilled and spilled in record-wet 2017, are now at 98% of average for this time of year, and will fall quickly as there is well-below-normal snowpack to melt.
Recent storms have dropped more than an inch of rain on San Francisco and blanketed the Sierra with snow, but water levels and snowpack around the state are still lagging far below normal. “It was a few drops in the bucket at least,” Scott Rowe, a meteorologist with the National Weather Service in Monterey, said Saturday. In San Francisco, slightly more than 1.2 inches of rain have fallen since Wednesday, with almost 1.4 inches at San Francisco International Airport. Numbers were similar in the East Bay and South Bay: Oakland got 1.13 inches and San Jose Airport just over an inch.
