DAMS, WHARFS, ETC., PROHIBITED WITHOUT APPROVAL Act of May 28, 1907, P.L. 299, No. 226 AN ACT To provide that no dam, wall, wing-wall, wharf, pier, embankment, abutment, projection, or other obstruction, nor any addition thereto, shall be constructed, erected, or built in or along any public or navigable river, or stream heretofore declared a public highway, within this Commonwealth; nor shall the course, current, or cross-section thereof be changed or diminished, without the approval of the Water Supply Commission of Pennsylvania; and to require maps, plans, profiles, specifications, information, and data relating thereto to be submitted to said Commission. Section 1. Be it enacted, &c., That from and after the passage of this act, no person or persons, corporation, county, city, borough, or township shall construct, erect, or build, in or along any public or navigable river, or stream heretofore declared a public highway, within this Commonwealth, any dam, wall, wing-wall, wharf, pier, embankment, abutment, projection, or other obstruction of such river or stream, nor make any addition to any existing dam, wall, wing-wall, wharf, pier, embankment, abutment, projection, or other obstruction of any such river or stream, nor in any manner change or diminish the course, current, or cross-section of any such river or stream, unless and until the said person or persons, corporation, county, city, borough, or township shall have submitted to the Water Supply Commission of Pennsylvania complete maps, plans, profiles, and specifications of, and such other information and data as the said Water Supply Commission of Pennsylvania may deem necessary relating to, the proposed dam, wall, wing-wall, wharf, pier, embankment, abutment, projection, or other obstruction, or addition thereto, and a majority of the members of the said Water Supply Commission of Pennsylvania shall have approved the same: Provided, however, That the provisions of this act shall not prohibit the making of necessary temporary repairs to existing dams, walls, wing-walls, wharves, piers, abutments, or projections. Cl. 74