There are several lakes named Mud Lake within the U.S. state of Pennsylvania.
Mud Lake, Crawford County, Pennsylvania. Lilly Lake, also known as Mud Lake, Lackawanna County, Pennsylvania. Mud Lake, Lancaster County, Pennsylvania. Mud Lake, Sullivan County, Pennsylvania. Margaret Lake, also known as Mud Lake, Wayne County, Pennsylvania.
See also List of lakes in Pennsylvania
References USGS-U.S. Board on Geographic Names