California and the U.S.

The latest news and analysis covering water issues in Caliornia and the rest of the United States.

‘The Storm Door is Open,’ Bay Area Weather Officials Warn

On-and-off rain for the better part of a week is expected to continue Tuesday and Wednesday in the Bay Area, but a larger storm will likely swamp the region starting Thursday, officials said. A weather system from the Northwest and coast is expected to bring rain to areas that have not been affected as much […]

Fresno Ties Rain Record, Merced Hit Even Harder – and More Wet Weather is on the Way

Fresno tied an almost 70-year-old single-day rainfall record Sunday — while areas north of the city like Merced were hit even harder, according to the National Weather Service. Sunday’s rainfall in Fresno exactly matched the Dec. 1, 1952, high of .78 inches of rain. “They tied it to the hundredth,” said Jim Dudley, a NWS […]

Colorado Rethinks Dam Safety as Climate Change Heightens Risk for State’s 27 “Unsatisfactory” Structures

A climate-driven shift toward extreme storms has compelled Colorado officials to rethink the safety of hundreds of dams across the state that hold water and mine waste, including 27 high-hazard structures near people that already are listed as deficient. They’re trying to calculate the potential for sudden hard rain resulting in flooding and accelerated erosion […]

Storm to Set Up ‘Firehose Effect’ With Rain, Mountain Snow in California

A storm currently along the California coast is loaded with moisture and will slam the northern part of the state with inches of rain and yards of snow in the Sierra Nevada mountains during the first couple of days of December. The storm will be double-barreled in nature with the first part set to slam […]

San Francisco Bay Dredging Fuels an Unexpected Concern: Climate Change

What began as an unremarkable bid to deepen a shipping channel in San Francisco Bay, making it easier for cargo vessels to come and go, has become a flash point in the debate over climate change. Environmental groups are blasting plans by the Army Corps of Engineers to dredge 13 miles of waterways inside the […]

New Monitoring Program Hopes to Boost Science on Colorado River Headwaters

A new federal program hopes to fill in knowledge gaps on how water moves through the headwaters of arguably the West’s most important drinking and irrigation water source. The U.S. Geological Survey announced the next location for its Next Generation Water Observing System (NGWOS) will be in the headwaters of the Colorado and Gunnison rivers. […]