Md. Code, Local Government § 25–1001

(a) A person who is assessed for a ditch or drain that does not pass through

or under the person’s land may open a ditch or install drain tile through the

intervening land to connect to the main ditch and keep the ditch or drain tile open at

the person’s expense and control.

(b) A person may not open a ditch or install drain tile under this section

through the land of another person without the consent of the owner of the land.