(d)"drainage work" includes:-(i)natural or artificial channels for the discharge of waste or surplus water, and all works connected with or auxiliary to such channels;(ii)escape channels of an irrigation work, dams, weirs, embankments, sluices and groins;(iii)any work constructed or improved by the Government for the purpose of reclamation by means of improvement of the surrounding drainage; and(iv)all works for the protection of lands from inundations or erosion, constructed or maintained by the Government either wholly or in part;
