Plum Lake fully stocked with trout Inland Fisheries Wichita Falls District fully stocked Plum Lake on Thursday. (Source: Inland Fisheries Wichita Falls District - Texas Parks and Wildlife Facebook) By KAUZ Team | March 4, 2021 at 1:00 PM CST - Updated March 4 at 1:00 PM WICHITA FALLS, Texas (TNN) - Inland Fisheries finished stocking Plum Lake after a delay due to the winter storm. On Thursday, Texas Parks and Wildlife stocked 400 rainbow trout into Plum Lake, off of Sheppard Access Road. The lake sits adjacent to the Softball Complex and requires a state of Texas fishing license for anyone over the age of 16. You can catch any length trout but there is a five maximum cap.