Complex sentence: "Immense" damage was reported to shade trees telegraph and telephone wires in Washington, in Annapolis, Maryland "hardly a tree was left standing" and in Baltimore it was reported as the worst flood since 1868.
Split into simpler sentences: Immense damage was reported to shade trees and telegraph and telephone wires in Washington. In Annapolis, Maryland "hardly a tree was left standing" and Baltimore reported the worst flooding since 1868.