All walleyes less than 15 inches long and between inches long must be immediately released. · Only one walleye greater than 27 inches long. mississippi river fishing regulations wi. . However, any. The statewide possession limit is 6 fish (for Walleye, Sauger, and Hybrids), with only one allowed to be bigger than 20 inches. A inch minimum length limit shall apply. Length Limit: A inch minimum length limit applies to Walleye on all pools of the Mississippi River. Walleye Creel and Length Limits: Until such time. All walleye from 20 inches to. In addition, you must immediately release alive all. Contact: Angler's Lodge () INTERNATIONAL W FALCON RESERVOIR South Texas, 60, acres Another Rio MISSISSIPPI RIVER Pools. Mille Lacs' one-fish limit will remain in place, but the change allows anglers to keep one walleye between inches or one longer than limit went pounds. 27 inches in length that are caught from Mississippi River Pools 12 through 20 must. A single angler may only transport his or her own limit(s) of fish, not to exceed seven (7) daily limits. I. Season: Continuous; Daily Bag Limit: combined walleye, sauger and saugeye; 6 fish; Possession Limit: combined walleye, sauger and saugeye; 12 fish. Walleye.