Swollen streams and waterfalls can already be seen in Yosemite National Park before the arrival of a major storm system this weekend.
FRESNO, Calif. (AP) — Photographer and rock climber Josh Hilling who lives in the foothills below Yosemite National Park spent recent days chopping wood and stocking up on groceries, ahead of what's expected to be the strongest storm to hit Central California in years.
Rangers at Yosemite on Friday closed all roads leading to the park's valley floor, a major attraction for visitors from around the world eager to view gushing waterfalls and gaze up at towering granite rock formations such as El Capitan and Half Dome.
"If you live long enough in this canyon, you experience lots of natural disasters — floods, fires, rock falls," said Hilling, from his family's home in El Portal.
An enormous storm in 1997 flooded Yosemite Valley, closing the park for two months and washing out roads, lodging and campgrounds. This weekend's storm is not expected to be as severe.
The closure is expected at least through Sunday. Other parts of the park remain open, but rangers caution visitors to be aware of ice and falling debris on the roads.
Early Friday, rangers stood watch for flooding along the Merced River, a major river flowing through the valley, park spokeswoman Jamie Richards said.
"We're prepared," she said, adding that they're accustomed to life in a giant canyon with frequent, rain, snow, ice and rock falls. "We have a lot of things we deal with on a frequent basis."
Rangers are keeping an especially close eye on Pohono Bridge, which crosses the Merced River. Flooding there starts when the water level reaches 10 feet, but the watermark hit just 4 feet Thursday, Richards said.
Rangers don't expect damage nearly as bad as in the 1997 flood, having moved buildings away from the river and increased drainage, Richards said.
Elsewhere, the onslaught of storms sent residents in California and Nevada scrambling to gear up for heavy rain and expecting swollen rivers and toppled trees this weekend.
On the coast in Santa Cruz — where up to a foot of rain could fall in places — officials have set up sand bag stations for residents.
"We're giving them a shovel and the sand and showing them how to fill them up," said Jason Hoppin, a Santa Cruz County spokesman. "We haven't seen rain like this in a long time."
This stormy weather comes as California enters its sixth year of drought. Each storm is welcomed, but officials say several more like this are needed to replenish depleted groundwater supplies, forcing some residents to live on bottled water.
The strong wet season began in October with more rain falling than in three decades, mostly in Northern California. Los Angeles is experiencing the wettest winter in six years, forecasters say.
Forecasters anticipate the storm surge stretching from Hawaii in the Pacific — called an atmospheric river — could dump up to 8 inches of rain from Sonoma to Monterey counties.
Forecasters warn of mudslides on the Central Coast hit hard this summer by scarring wildfires.
The storm's mild temperatures will drive up the snowline to above 9,000 feet throughout the Sierra Nevada, causing runoff in the lower elevations, said Zach Tolby, a meteorologist with the National Weather Service in Reno.
The Truckee River, which flows from Lake Tahoe through Reno, is forecast to rise to its highest point in more than a decade, according to the weather service, which has issued a flood warning.
Residents and business owners throughout the Reno-Sparks area filled tens of thousands of sandbags.
Flooding could rival the winter of 2005-2006 that sent 5 feet of water into the Sparks industrial area made up of warehouses and manufacturing plants. Crews worked to secure storage drums filled with hazardous materials to stop them from floating away as they have in past floods.
"This is a classic set up for us for flooding," Tolby said. "We're definitely expecting a very wet weekend."
Associated Press writer Scott Sonner in Reno, Nevada, contributed to this story.