Whenever it appears necessary to drain any land within a district on account of the irrigation which has been done or which is intended to be done by the district under laws relating to it, whether for the purpose of more beneficially carrying on the irrigation or to protect the district from liability by reason of the irrigation, its board, if it is reasonable from an economic standpoint that the drainage be provided, shall provide for the drainage.
(Added by Stats. 1943, Ch. 372.)