Section 2(h) in Tamil Nadu Farmers' Management of Irrigation Systems Act, 2000
(h)"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 canal system and other works connected therewith, but does not include works for removal of sewage; and(iii)all collecting drains and main drains to drain off surplus water from field drains;(iv)all field drains and related structures under irrigation sluices;
