No person shall quarry sand in any area in a water course within a distance of five hundred metres from any dam, check dam, reservoir or any other structure or construction on or across such water course owned or controlled or maintained by Government for the purpose of irrigation:
Provided that nothing in this section shall apply to collection and removal of silt and sand from the reservoir or the water spread area of a dam or check dam by the Water Resources Department for the maintenance of such dam or check dam.