NRS 408.042

“Conveyance system” means any system of drainage along or involving the roads or highways of this State, or within the rights-of-way of the Department, and designed or used to collect, contain, store or provide for the flow of surface and storm water. The term includes, without limitation, gutters, curbs, ditches, pipes, culverts, channels, catch basins, vaults, man-made channels or storm drains that are owned, operated or controlled by the Department.