The City of Wichita Falls is in the middle of a major revitalization effort at Lake Wichita, one of the oldest man-made lakes in the entire state of Texas. The area around this cache is slated for a big upgrade, including new fishing docks and ramps, a veterans plaza and this fish-cleaning station. You are looking for a small cache at or near the cleaning station.
Congrats to The Mtns and HippieHacker for the FTF!