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Updated: Mon, 26 Aug 2013 04:03:41 GMT | By The Associated Press, cbc.ca

California wildfire still growing, officials say



California wildfire still growing, officials say

Firefighters are bracing for an intense battle to keep a wildfire raging north of Yosemite National Park out of mountain communities.

As fire leapfrogs across the vast, picturesque Sierra forests, moving from one treetop to the next, residents in the fire's path are moving animals and children to safety.

"We've already evacuated the horses," said Ike Bunney, who owns Slide Mountain Guest Ranch near the Sierra community of Tuolumne City.

The fire has moved northeast away from Groveland, where smoke gave away to blue skies Sunday. But at Tuolumne City's Black Oak Casino in Tuolumne City, the slot machines were quiet as emergency workers took over nearly all of the resort's 148 hotel rooms.

"The casino is empty," said casino employee Jessie Dean, who left her four children at relatives' homes in the Central Valley. "Technically, the casino is open, but there's nobody there."

Hundreds of firefighters were deployed Sunday to protect Tuolumne City and other communities in the path of the Rim Fire. Eight fire trucks and four bulldozers were deployed near Bunney's ranch on the west side of Mount Baldy, where two years of drought have created tinder-dry conditions.

"Winds are increasing, so it's going to be very challenging," said Bjorn Frederickson, a spokesman for the U.S. Forest Service.

The fire continues burning in the remote wilderness area of Yosemite, but park spokesman Tom Medena said it's edging closer to the Hetch Hetchy Reservoir, the source of San Francisco's famously pure drinking water.

Despite ash falling like snowflakes on the reservoir and a thick haze of smoke limiting visibility to 30 metres, the quality of the water piped to the city about 100 kilometres away is still good, say officials with the San Francisco Public Utilities Commission.

However, the fire has interrupted the flow of hydroelectric power to the city, forcing the utility to spend $600,000 buying power on the open market.

Park employees are continuing their efforts to protect two groves of giant sequoias that are unique to the region by cutting brush and setting sprinklers, Medena said.

The fire has consumed nearly 225 square miles of picturesque forests. Officials estimate containment at just seven per cent.

"It's slowing down a bit, but it's still growing," Frederickson said.

Containment lines

Fire lines near Ponderosa Hills and Twain Hart are being cut kilometres ahead of the blaze in locations where fire officials hope they will help protect the communities should the fire jump containment lines.

"There is a huge focus in those areas in terms of air support and crews on the ground building fire lines to protect those communities. We're facing difficult conditions and extremely challenging weather," Frederickson said.

The high winds and movement of the fire from bone-dry brush on the ground to 30-metre oak and pine treetops have created dire conditions.

"A crown fire is much more difficult to fight," said Daniel Berlant of the California Department of Forestry and Fire Protection. "Our firefighters are on the ground having to spray up."

Rugged river canyons

The blaze sweeping across steep, rugged river canyons quickly has become one of the biggest in California history, thanks in part to extremely dry conditions caused by a lack of snow and rainfall this year. Investigators are trying to determine how the fire started Aug. 17, days before lightning storms swept through the region and sparked smaller blazes.

The fire is the most critical of a dozen burning across California, officials say. More than 12 helicopters and a half-dozen fixed wing tankers are dropping water and retardant from the air, and 2,800 firefighters are on the ground.

"This fire has continued to pose every challenge that there can be on a fire: inaccessible terrain, strong winds, dry conditions. It's a very difficult firefight," Berlant said.

The U.S. Forest Service says about 4,500 structures are threatened by the Rim Fire. Berlant said 23 structures were destroyed, though officials have not determined whether they were homes or rural outbuildings.

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