Anything below Maple Springs is probably a pretty good definition of lower Lake Pepin. Maple Springs is maybe five miles south of Lake City on highway 61. Pepin Wisconsin where Tom is launching is just a little higher up maybe than the springs, maybe straight across the river.
Drag out a Lake Pepin map or fins an on-line one to study. Lower Pepin offers a whole lot of diversity as far as water/structure goes. I think its maybe a week or two early to get real excited about this particular portion of the river but then the whole early season has had some mystery involved this year. One never knows.