If nobody you speak to has a clue on timing of the spawn, ask when the ice went out. Most walleyes finish spawning within three weeks of the ice-out date. As a rule, walleyes spawn earlier in rivers than in lakes, in shallow lakes than in deep ones, in small lakes than in large ones and in low-clarity lakes than in clear ones. Latitude is a factor as well. All else being equal, spawning is delayed about one day for every 35 miles you go north in walleye country. So if you were planning to fish a deep, clear lake, but learned that the walleyes just finished spawning a few days earlier, consider trying a nearby river or a shallower, dingier lake in the same area. Otherwise, look for a lake a bit farther south.