No obstruction to navigation.
Section 28
SEC. 28. No obstruction to navigation.—Nothing in the foregoing sections shall be construed as permitting the lessee or licensee to undertake any construction which will obstruct the free navigation in any stream or lake flowing through or adjoining the fish pen or fishpond, or impede the flow and ebb of the tide and from the area. Any construction made in violation hereof shall be removed upon order of the Secretary. C. MUNICIPAL FISHERIES