7 feet
It depends on what you're measuring. If measuring the length of the river, then miles. If measuring the width, then probably yards (or feet). If measuring water depth, then probably feet.
1000 feet
7 feet by 23 feet.
It is 30 miles.
The Potomac and Anacostia rivers.
Potomac River, the Anacostia River, and Rock Creek.Potomac River
Washington D. C. in the United States has many rivers. The most well known rivers would be the Potomac River and the Anacostia River.
Washington DC is on the Potomac River. On the far side is Virginia (Arlington, and the Pentagon). To the southeast is the Anacostia River.
Anacostia was created in 1854.
There are two rivers located within DC's boundries: the Potomac and the smaller Anacostia River (formerly named the Eastern Branch)
Potomac River runs along the west side of Washington DC. The Anacostia River is in the southern part of DC.
Anacostia Community Museum was created in 1967.
Anacostia Railroad Bridge was created in 1872.
Anacostia High School was created in 1937.
Anacostia Waterfront Corporation ended in 2007.
Amtrak Railroad Anacostia Bridge was created in 1905.