Section 2(1)(f) in The M.P. Sinchai Prabandhan Me Krishkon Ki Bhagidari Adhiniyam, 1999
(f)"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 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 pipe outlets;