The city of Quesnel, B.C., remains under a state of emergency today due to the threat of flash flooding after a recent landslide.

Officials say the slide on Baker Creek, about three kilometres upstream from the Fraser River near Pinnacles Provincial Park, may have occurred late last month, creating a blockage and backing up water to a depth of three to 3.6 metres.

If the blockage is breached, homes would be made vulnerable to flooding quite quickly, said Quesnel fire chief Sylvain Gauthier.

"If the slide fails and all this water is just going right through it in one shot, it would take approximately 30 to 35 minutes to make its way to the city limits, where some of the housing are located right beside the creek," Gauthier told CBC News. "It could jeopardize some of the housing through a major flash flood."

Specialists with Emergency Management BC have already visited the site on Baker Creek in Quesnel, 114 kilometres south of Prince George.

Officials are urging residents to evacuate the area around the creek until further notice.

The state of emergency is not expected to be lifted until at least Monday.

Falling tree kills 11-year-old boy

Meanwhile, residents of Grand Forks — about 500 kilometres south of Quesnel — are still recovering from a deadly storm that hit Friday afternoon.

An 11-year-old boy was killed when trees fell on the hut where he was sleeping at the Pines Bible Camp. His name has not been released, but officials say he was from Christina Lake, where the community is now pulling together.

"We were all gathered at the community hall when we heard about this and so we did ... take a moment and send our sympathies to the family, everybody being very, very affected by it," said Grace McGregor with the Kootenay Boundary Regional District.

Officials say there will be a memorial for the boy but the details haven't been worked out.

No one else at the camp was injured, though there were about 100 other kids and staff members on site. The camp was left in bad shape.

"I could see the wind picking up and the storm picking up, and I just came around one of the corners and there was a big tree across the road I was able to get past, and then another and another, and power lines down," said Jonathan Christian, who was a guest speaker at the camp for the week.

Extent of damage unclear

Christian, who is also a board member for the camp's ministry, photographed the storm and the damage.

"Seventy per cent of the trees around the camp are down, probably half of the sleeping cabins are badly damaged, the big gymnasium is a steel structure, that's been compromised," he said. "And we don't know what the damage is to a lot of the buildings because we can't get in them."

It's not clear how much it will cost to repair the damage. The camp is in a remote location, so getting labour and supplies to the site will be expensive.

But offers of help are already pouring in.

"We're relying on the community to really rally around us and help us, both with volunteer time and resources and donations as well, so we can get the camp ready before the winter, so we can be tight and reopen again next summer," Christian said.

A fundraiser for the camp is planned for Tuesday in Abbotsford.

The storm also brought down power lines across the Okanagan and the Kootenays. At one point, about 20,000 customers were left without power.

The weather has wreaked havoc in B.C. in recent months. A landslide in Johnsons Landing killed four people, a mudslide left hundreds of people stranded in Fairmont Hot Springs and widespread flooding closed highways and drove residents from their homes.

Earlier on HuffPost:

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  • Geo-seismic crew from the B.C. Ministry of Transportation survey damage to a road Sunday, July 15, 2012 that was torn away by a landslide that buried three homes and has left four people unaccounted for in Johnsons Landing, B.C. THE CANADIAN PRESS/Jeff McIntosh

  • An employee of the B.C. Ministry of Transportation surveys a road Sunday, July 15, 2012 that was torn away by a landslide that buried three homes and has left four people unaccounted for in Johnsons Landing, B.C. THE CANADIAN PRESS/Jeff McIntosh

  • Lynn Migdal, centre, who now lives in Florida, returns to Kaslo, B.C., Sunday, July 15, 2012, from a tour of the landslide where her missing daughters Rachel and Diana Webber, along with her ex-husband Val Webber are feared in Johnsons Landing, B.C. THE CANADIAN PRESS/Jeff McIntosh

  • Valentine Webber's home in Johnson's Landing, B.C. is shown in an undated photo. The house was crushed Thursday in a landslide. THE CANADIAN RESS/ho-Sarah Jenkins

  • Local residents photograph the swath of a landslide that buried three homes and has left four people unaccounted for in Johnsons Landing, B.C., Saturday, July 14, 2012.THE CANADIAN PRESS/Jeff McIntosh

  • A landslide struck Johnsons Landing, a tiny hamlet on the shores of Kootenay Lake roughly 70 kilometres northeast of Nelson, British Columbia, Thursday, July 13, 2012 severely damaging three homes. Four people, including a father, his two daughters and a German tourist, were unaccounted for and feared to be caught in the debris. This photo, taken during a British Columbia Ministry of Transportation and Infrastructure geotechnical assessment shows the impact of the slide. (AP Photo/British Columbia Ministry of Transportation and Infrastructure)

  • The Johnsons landing landslide is shown in this Thursday July 12, 2012 photo provided by Emergency BC. Four people are still unaccounted for nearly 24 hours after a wall of rock, mud and trees cascaded down the side of a mountain above the shores of Kootenay Lake, tearing through the tiny community of Johnsons Landing, about 70 kilometres northeast of Nelson. At least three homes in the southeastern B.C. hamlet are engulfed by the muck, which is unstable and shifting, prompting searchers to call off rescue efforts at least once on Thursday afternoon. Emergency crews met at dawn Friday to consider the most efficient and effective way to search the massive mudslide for possible victims. (AP Photo/Emergency BC via The Canadian Press)

  • The Johnsons landing landslide is shown in this Thursday July 12, 2012 photo provided by Emergency BC. Four people are still unaccounted for nearly 24 hours after a wall of rock, mud and trees cascaded down the side of a mountain above the shores of Kootenay Lake, tearing through the tiny community of Johnsons Landing, about 70 kilometres northeast of Nelson. At least three homes in the southeastern B.C. hamlet are engulfed by the muck, which is unstable and shifting, prompting searchers to call off rescue efforts at least once on Thursday afternoon. Emergency crews met at dawn Friday to consider the most efficient and effective way to search the massive mudslide for possible victims. (AP Photo/Emergency BC via The Canadian Press)

  • The Johnsons landing landslide is shown in this Thursday July 12, 2012 photo provided by Emergency BC. Four people are still unaccounted for nearly 24 hours after a wall of rock, mud and trees cascaded down the side of a mountain above the shores of Kootenay Lake, tearing through the tiny community of Johnsons Landing, about 70 kilometres northeast of Nelson. At least three homes in the southeastern B.C. hamlet are engulfed by the muck, which is unstable and shifting, prompting searchers to call off rescue efforts at least once on Thursday afternoon. Emergency crews met at dawn Friday to consider the most efficient and effective way to search the massive mudslide for possible victims. (AP Photo/Emergency BC via The Canadian Press)

  • The Johnsons landing landslide is shown in this Thursday July 12, 2012 photo provided by Emergency BC. Four people are still unaccounted for nearly 24 hours after a wall of rock, mud and trees cascaded down the side of a mountain above the shores of Kootenay Lake, tearing through the tiny community of Johnsons Landing, about 70 kilometres northeast of Nelson. At least three homes in the southeastern B.C. hamlet are engulfed by the muck, which is unstable and shifting, prompting searchers to call off rescue efforts at least once on Thursday afternoon. Emergency crews met at dawn Friday to consider the most efficient and effective way to search the massive mudslide for possible victims. (AP Photo/Emergency BC via The Canadian Press)