Power to take up Survey.

It shall be lawful for the Flood Zoning Authority or any of the officers generally or specially authorised by it in this behalf: (a) to enter upon and survey and take levels of any land within its or his jurisdiction; (b) to mark such levels, boundaries and line by placing marks or boundary stones; (c) to measure the land; (d) to do all other acts necessary for the purpose of ascertaining the limits referred to in sub-section (2) of section 3; (e) Where otherwise the survey cannot be completed / aid the levels taken, to cut down and clear away any part of standing crop, fence or jungle; Provided that no Flood Zoning Authority or any other officer shall enter into any building or open any enclosed court or garden attached to a dwelling house or cut down and clear away standing crops or fence (unless with the consent of the occupier thereof) without previously giving such occupier at least seven days' notice in writing of it or his intention to do so.