![]() On rivers impounded by dams, expect a significant portion of the walleye population to be located within the first mile or two below the dam. Walleye migrations are also driven by the upcoming spawn, which takes place as longer periods of daylight and warmer weather elevates water temperatures into the mid-40s. In some rivers a 12-foot hole is deep in others, 30 feet. Be on the lookout for places where surface debris collects, ice first forms and where waterfowl gather, all of which are indicators of mild current areas with the potential to hold winter walleyes. Some deep holes are the result of commercial dredging. ![]() Pools found downriver of islands can have the “right stuff,” as can the insides of sharp river bends. On navigable waters, buoys marking these hazards are often present. It’s common for such obstructions to be located at the mouths of feeder streams, formed when storm-driven rain washes material out of the tributary into the main river. Holes located below current-deflecting structures like gravel/rock bars often hold fish. ![]() DEEP SPOTSĭeeper river pools, ones out of the flow of the river’s main force, become the wintertime sanctuary for ’eyes. This all changes as water temperatures drop, driving the fish to move to places that do not require them to burn more calories than they consume. Prior to this, during the summer and early fall, fish are more scattered, utilizing a variety of food-rich habitats, including ones with significant flow. Starting in late fall, as water temperatures drop into the low 50s and upper 40s, walleyes begin a migration toward areas of reduced current.
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