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N.D. officials: More blasts needed to clear ice jam
BISMARCK, N.D. — Demolition crews blasted chunks of ice near a huge ice jam in the Missouri River on Wednesday in a bid to open a channel and drain a flood threatening the city. Officials planned two more rounds of explosives.
Gov. John Hoeven said a second round of explosives was to be set off Wednesday night and a third round this morning. Greg Wilz, the state's homeland security director, called earlier blasts on about 500 feet of ice just south of the jam "a partial success."
"The ice started moving," Wilz said. "We would like to have a controlled flush because we don't want to cause problems for people downstream."
Bismarck Mayor John Warford had said the city was "cautiously optimistic" after the first try and that water appeared to be moving.
Water backing up behind the dam of car-size ice blocks already had forced the evacuation of about 1,700 people from low-lying areas in North Dakota's capital.
Meanwhile, on the eastern side of the state, volunteers continued stacking sandbags to protect Fargo amid new concern over the rising Red River. After days of predicting a crest ranging from 39 to 41 feet, the National Weather Service settled on the higher number.
City officials said they would build their dikes a foot higher than planned, to 43 feet, and would distribute evacuation information to residents today. The river was projected to crest Saturday afternoon.
Mayor Dennis Walaker described 41 feet as "uncharted territory." The Red's record high at Fargo was 40.1 feet in 1897. Walaker said he was still confident the city would beat the flood, but that contingency plans were needed.
Police chief Keith Ternes urged people with disabilities to consider leaving the city, saying: "If they expect us to get to them and get them out, they should give serious consideration."
In Bismarck, the Missouri River jam was created by ice floating down the Heart River, with some chunks up to 3 feet thick and the size of small cars. The jam was about 11 miles downstream from the city.
"The ice is just solid as a rock," Assistant Water Commission Engineer Todd Sando said.
Crews from Advanced Explosives Demolition, with help from National Guard, the Army Corps of Engineers and the Coast Guard, drilled 80 holes in the ice to detonate clay-like explosives. Wilz said salt would be used to help speed the breakup and officials were considering backhoes to break up ice sheets near the river's west bank.
Roger Kay, an Army Corps of Engineers hydraulic engineer, said ice downstream from that jam appeared to be melting and weakening, meaning less resistance once the jam is broken loose.
"The ice is showing signs of becoming more rotten," Kay said.
A second ice jam about 10 miles upstream of Bismarck was also a concern, holding back a growing reservoir.
The National Weather Service posted a flash flood warning for a three-county area, saying the integrity of that ice jam, in an area called Double Ditch, was unpredictable.
Residents of low-lying subdivisions in Bismarck and neighboring Mandan had been told to evacuate, and Fox Island residents Jane and Michael Pole didn't need much prodding. "We just grabbed a bag, threw some stuff in and left," Jane Pole said.
President Barack Obama declared the entire state of North Dakota a disaster area late Tuesday in response to widespread flooding. The Minot Air Force Base was deploying two rescue helicopters to Bismarck, in case people need to be saved from floodwaters.
Mike Hall, who is in charge of the Federal Emergency Management Agency's North Dakota response to the flood, said the agency is shipping almost 20,000 meals, 4,500 blankets and hundreds of toiletry kits to the Grand Forks Air Force Base. From there, the supplies will be distributed as needed, Hall said.
More sandbagging was planned in part of Grand Forks, the city hardest hit by the 1997 Red River flood. An elaborate dike system was built after that disaster. The Red rose to 42.5 feet in Grand Forks by midday Wednesday with a crest near 52 feet projected for Monday. The record there was 54.4 feet, set in 1997.
Snow fell Wednesday in the Red River Valley region, with several inches on the ground, and people were advised not to travel. The continuing bad weather forced Grand Forks to cancel two busloads of volunteers who planned to head upstream to Fargo. The Bismarck area got 8 inches of snow, the weather service said Wednesday morning.
The blizzard had blocked hundreds of miles of highways in Montana, Wyoming, South Dakota, North Dakota and Nebraska. The southwestern North Dakota town of Marmarth reported 22.5 inches of snow and up to 2.5 feet of snow fell in South Dakota's rugged Black Hills.