Section 6 Power to make subsidiary works
Subject to the provisions of this Act, the appropriate company may from time to time erect, construct and maintain whether temporarily or permanently all such works and conveniences as may be requisite or expedient for the purposes of or in connection with the construction, maintenance and use of the National Power works or the PowerGen works, as the case may be:
Provided that—
the appropriate company shall ensure that, so far as is reasonably practicable, any such works shall not unnecessarily narrow or obstruct the navigable waterway of the river or otherwise interfere with or impede navigation or obstruct the flow of water or the passage of fish;
no such permanent works or conveniences shall be erected or constructed outside the limits of deviation.
On the completion of the National Power works or the PowerGen works, as the case may be, the appropriate company shall remove all temporary works placed by them under the powers of this section on, under or over land below the level of high water.