For the purposes of this subchapter the definitions found in 23-2-301, MCA, and the following definitions apply:

(1) "Adversely affecting" means significantly and harmfully altering the quality or quantity of fish or wildlife populations.

(2) "Damage" means physical harm to structures, equipment, agricultural production, or stream beds or banks up to the ordinary high-water mark or to land beyond the ordinary high water mark.

(3) "Degradation" means physical harm to the stream banks and beds that results in continuous, long-term violations of state or federal water quality standards.

(4) "Disrupting or altering" means causing modification of an area resulting in a measurable harmful reduction in biotic community or communities.

(5) "Person" means an individual, firm, corporation, association, partnership, municipality, or local, state, or federal governmental agency,