On the completion of any canal or of any convenient section of any canal the Collector, after causing such inspection to be made as may be necessary, shall certify to the Government that suitable and sufficient means of crossing the canal, and suitable and sufficient means of drainage as aforesaid, have been provided; or shall report in what respects the provision made for the above purposes is defective; and if, at any time after he shall have given such certificate, it shall be brought to his notice that the provision made as above has proved insufficient, the Collector shall cause inquiry to be made into the circumstances of the case, and, if the statement is established, shall report his opinion thereon for the consideration of the Government, and the Government shall cause such measures in reference thereto to be taken as it thinks proper.