Protecting Our Great Lakes Act of 2014 - Amends the Federal Water Pollution Control Act (commonly known as the Clean Water Act) to prohibit any discharge of dredged material into waters within Lake Erie, Lake Huron, Lake St. Clair, Lake Michigan, Lake Ontario, and Lake Superior lakeward from a line drawn across the mouth of tributaries to the Lakes. Includes within the area protected from discharges all waters enclosed by constructed breakwaters (barriers built in a body of water to break the force of waves and protect surrounding land). Excludes connecting channels from the protected area.

Requires any dredged material resulting from activity in the Great Lakes System to be reused in beneficial ways on land or disposed of in a confined land- or water-based disposal area determined to be economically and environmentally viable by the Army Corps of Engineers in consultation with concerned states.

Treats violators of the prohibition as having violated a condition or limitation set forth in a permit to discharge dredged or fill material into waters of the United States.