The Potomac River that crosses Wahsington, United States, has an average depth of 24 feet or 7 meters, according to the United States Geological Survey (USGS). This river is the crash site of the American Airlines Bombardier CRJ700 which collided with the Black Hawk helicopter.

The river length is an average of about 400 miles from upstream of rivers at North Branch to downstream in Chesapeake Bay.

Potomac ranks 48th among 135 rivers in the US longer than 100 miles.

The deepest point near Morgantown, Maryland, is 107 feet, while the depth of the channel that can be navigated is 24 feet, which is maintained as far as 108 miles in the ups and downs of the river, downstream Washington, DC, the USGS website said.

Meanwhile, Chief of Fire and EMS DC John A.men Sr. said the difficulty of the search and rescue carried out on victims of the American Airlines Bombardier CRJ700-Helikopter Black Hawk crash in Washington. The plane crashed into a river near Reagan National Airport.

The challenge is access. The water we operate in has a depth of about 8 feet, there's wind, there's chunks of ice out there so it's dangerous and difficult to work on, "a word from CNN, Thursday, January 30.

"The water is dark, cloudy, and the conditions are very difficult for them to dive," he added.

According to him, the search is likely to take several days.

"If you imagine, the river is in the form of a big black spot at night, there are no lights on, except for a few buoys," he said.

DC Mayor Muriel Bowser confirmed on Thursday morning local time, the two planes were inside the river.

There were 64 people on the American Airlines plane and three were on military helicopters.


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