As used in this part, unless the context requires otherwise, the following definitions apply:
(1) "Agricultural production" means the production of:
(a) any growing grass, crops, or trees attached to the surface of the land; or
(b) farm animals with commercial value.
(2) "Coal bed methane developer or operator" means the person who acquires a lease for the purpose of extracting natural gas from a coal bed.
(3) "Department" means the department of natural resources and conservation as provided for in Title 2, chapter 15, part 33.
(4) "Emergency" means the loss of a water supply that must be replaced immediately to avoid substantial damage to a landowner or a water right holder.