Tennessee Code Title 70. Wildlife Resources § 70-4-211

(a) It is unlawful for any person, while fishing, to use any nets, seines, snag lines, drag lines, grab hooks, or baskets, or any other form of fishing equipment, or other obstruction of any character to the free passage of fish within one hundred (100) yards of the mouth of any river, creek, slough, inlet or outlet, except bait or casting plugs with not more than three (3) treble hooks attached, ordinary fly fishing equipment, and pole and line with not more than three (3) single hooks attached.

(b) For the purposes of this section, “mouth of a stream” means the location of a line resulting from the projection or extension of the banks of the main stream that receives the tributary, except in the case of streams entering waters impounded by hydroelectric or flood control dams, in which case the mouth of the entering stream is defined as the line where the free, downstream movement of natural water is visibly reduced or retarded by the level of the impounded waters in the main stream.

(c) A violation of this section is a Class C misdemeanor.