Section 2(1)(e) in Rajasthan Farmers' Participation in Management of Irrigation System Act, 2000
(e)'drainage system' in relation to an irrigation system includes,-(i)channels either natural or artificial, for the discharge of waste or surplus water and all works connected therewith or ancillary thereto;(ii)escape channels from an irrigation or distribution system and other works connected therewith, but does not include works for removal of sewage;(iii)all collecting drains and main drains to drain off surplus water from field drains; and(iv)all field drains and related structures under outlets;