The following words and phrases when used in this act shall have the meanings given to them in this section unless the context clearly indicates otherwise:

“Abutting land.” Land which is contiguous, joined at a border or boundary of State forest or State park lands, and where no other land intervenes.

“Commonwealth agency.” The Commonwealth and its departments, boards, commissions and agencies, Commonwealth-owned universities and any authority now in existence or hereafter created or organized by the Commonwealth.

“Department.” The Department of Conservation and Natural Resources of the Commonwealth.

“Local agency.” A political subdivision, school district, conservation district or municipal authority of the Commonwealth.