(a) Drawing off or obstructing dams.--No person shall draw off dam waters inhabited by fish without first applying for written permission from the commission, nor shall any person obstruct the flow of water through any such dam without allowing a minimum flow of water determined by the commission to be sufficient at all times to flow in the natural stream on which the dam is located to enable the fish to live. Any person violating the provisions of this subsection commits a summary offense of the first degree.

(b) Interference with dams or devices.--Dams, deflectors, retards or similar devices placed across or in any waters inhabited by fish, with permission of the owner or owners of the land adjacent thereto or through which those waters flow, shall not be destroyed, removed, breached or disturbed, except by written permission first obtained from the commission. Any person violating the provisions of this subsection commits a summary offense of the first degree.