“Lake Pepin” isn’t really known for it’s Winter walleye/sauger bite. The best bite once it gets cold is from the open water, well North of the lake. There are a few residential walleyes and saugers that you may randomly catch through the ice, but the majority of the fish seem to head upstream. There are very few places on the lake where I would take a large truck and 16+’ wheelhouse with the current and springs.
The backwaters in the area are endless. The tip-up fishing for pike can be great if you are willing to hike, and panfish are easy to locate. There are some very accessible community holes that produce a large number of fish – with the more remote areas providing numbers AND size.