Question: Are the Washington City Canal and Champlain Canal both still fully operational ?
Sentence (from "Washington City Canal"): The Washington City Canal operated from 1815 until the mid-1850s in Washington, D.C. The canal connected the Anacostia River, called the "Eastern Branch" at that time, to Tiber Creek, the Potomac River, and later the Chesapeake and Ohio Canal (C&O).
Relevant evidence: No