The map shall also accurately show the boundary lines of the lands of the said coal mine or colliery and the proximity of the workings thereto, all pipelines, streams or other bodies of water, buildings and structures, roads and highways and in case any mine contains any water dammed up in any part thereof, it shall be the duty of the operator or superintendent to cause the true location of the said dam to be accurately marked on said map or plan, together with the tidal elevation, inclination of strata and area of said workings containing water, and whenever any workings or excavations are approaching the workings where such dam or water is contained or situated, the operator, superintendent, or mine foreman, shall notify the inspector of the same without delay.