Heavy Rains in Midwest Cause Flooding, Shuts Down Chicago Interstate, Breaks Iowa Dam



Iowa Dam Fails Causing 'Catastrophic' Release of Water




related: String of Floods Raise Climate Change Questions




July 24, 2010
AP

Standing water on Chicago-area expressways turned what should have been an easy Saturday morning drive
into a soggy, snarled mess after heavy rains across the Midwest closed roads, stranded residents and punched a hole through an Iowa dam.

Photo: Tony Woodruff, of Lake Delhi, (left) and Greg Ragsdale, of Janesville, carry a trunk out of the home of Patsy Rounds who has lived in the home by herself for 15 years in Freddy's Beach area of Lake Delhi on Saturday, July 24, 2010. Neither of them know Rounds but were going throughout the resort evacuating people who needed help. The Maquoketa River which flows to form Lake Delhi has yet to reach crest which is predicted to be record breaking. (The Gazette)

In Chicago, officials say more than 7 inches of rain fell early Saturday, inundating the sewer system and overwhelming waterways. Water covered portions of several Chicago interstates and the commuter train tracks that run along them, leading crews to divert traffic and call in bus shuttles. Portions of Interstate 290 west of downtown were closed for several hours.

Chicago Mayor Richard Daley and other officials urged residents to call for help if they need it.

"Our goal is to get the city back to normal as quickly as possible," Daley said at a news conference Saturday.

West of Chicago in suburban Westchester, crews in boats were searching for people who were stranded in their flooded homes or trapped in cars under viaducts.

In eastern Iowa, the Lake Delhi dam failed as rising floodwater from the Maquoketa River ate a 30-foot-wide hole in the earthen dam, causing water to drop 45 feet to the river below and threatening the small town of Hopkinton.

Lake Delhi was created in the 1920s by damming the Maquoketa River. The resort area now has about 700 cabins and homes.

Areas below and above the dam had been evacuated after heavy rain has pushed the river to 23.92 feet — more than 2 feet above its previous record of 21.66 feet in 2004.

Photo: High water sits around a house at an intersection in Monticello, Iowa, on July 24, 2010. (Justin Hayworth/The Register)

Jack Klaus, a spokesman with the Delaware County emergency management office, said warning sirens sounded in Hopkinton as water began to surround homes Saturday afternoon.

"There's going to be significant losses of property there," Klaus said.

Donna Dubberke, a meteorologist with the National Weather Service in Davenport, said areas below the dam will see an initial crest in the river caused by the dam's failure followed by a secondary crest as the high water above the dam made its way downstream.

"There will be initial wave from the sudden shot of water and a secondary shot behind it from the rainfall," she said.

Heavy rains have also wreaked havoc in the Milwaukee area in the past few days, and Gov. Jim Doyle planned to tour affected areas Saturday, including the intersection where a sink hole swallowed an SUV.



County Executive Scott Walker estimated Thursday's torrential rains caused more than $10 million in damage to public property and another $18 million to private property. Doyle has already declared a state of emergency in the county.

A 300-foot-long breach in Lake Delhi Dam Saturday sent water spilling downstream and hundreds of people fleeing for safety in eastern Iowa.

David Fink, Lake Delhi dam operation manager, called the breach “a catastrophic release of water.”

Photo: Maquoketa River water surges over the bridge of the Delhi Dam as areas surrounding the Maquoketa River continue to flood. (The Gazette)

"It’s going to have a hell of a lot of velocity,” he told The Des Moines Register.

The dam, which sits on the Maquoketa River about 45 miles north of Cedar Rapids, failed following massive amounts of rain.

The road on top of the dam collapsed around 10:30 a.m., and water gushed over just before 1pm the newspaper reported.

Some media outlets are reporting the water reached the eaves of several homes and businesses in the immediate vicinity. Others report rushing water flooding over railings and onto roads and fields.

Authorities sounded flood warning sirens in nearby Hopkinton, a town of 700 residents, giving them five minutes to flee.

One homeowner told Fox News that all he can do is wait until the water gets to his town.

A flood warning was also announced in Monticello, which has a population of 3,700.

Officials do not know if the entire dam will give way, but residents in low-lying areas have been ordered to leave their homes and avoid the debris-filled water, Fox News reported.

There were no reports of injuries.