- Associated Press - Friday, September 9, 2011

The remnants of Tropical Storm Lee closed roads, schools and a commuter rail line in waterlogged Northern Virginia, and a retaining wall was brought down near a townhome complex, forcing evacuations.

At least four people have died in the Mid-Atlantic region because of the flooding.

Two men and a boy died Thursday night in three separate incidents in Fairfax County, where nearly 10 inches of rain fell in 24 hours, officials said.

In Maryland, the Susquehanna River reached a 15-year high of 32.4 feet Friday at the Conowingo Dam and was expected to remain near that level into the night, the National Weather Service said. Dam gates were opened to relieve pressure on the river.

Across the Baltimore-Washington area, flood waters inundated sewage-treatment plants.

Maryland’s congressional delegation asked the White House to declare a federal emergency so the state can apply for federal disaster aid.

More rain Friday added to the 13.5 inches that the region has endured since Monday. Sun was forecast Sunday for the first time in a week.

Commuters confronted scores of road closures and a complete shutdown of the Virginia Railway Express. The railroad, which serves suburbs south and east of Washington, said parts of both lines were under water and the track bed was washed out in at least one spot.

Trains were delayed Friday on Maryland’s MARC commuter rail lines.

About 150 people were evacuated Thursday night in Prince William County, Va., mostly from mobile home parks along U.S. 1 in the Woodbridge area after Marumsco Creek overflowed.

A four-tiered 50-foot retaining wall partially gave way behind a nearby townhome complex, forcing some evacuations there, county spokesman Jason Grant said.

“It was like Niagara Falls” said resident Felipe Bastos.

Fairfax County Police said 12-year-old Jake Donaldson died after he was swept away by flood waters in the backyard of his Fair Oaks home Thursday evening.

Arsalan Hakiri, 67, of Reston, was swept away along with his car and drowned when he tried to leave the vehicle, police said.

On Friday, Fairfax County Police released details from a third death Thursday night. Galo Sebastian Salvador Vinueza, 25, of Lorton died after he abandoned his car and tried to cross a flooded bridge on foot, police said. The road was where some of the worst flooding in northern Virginia occurred.

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