Mornin all.
WD: You'll have a riot.
A friend used to dive the river and pick lead (from the salmon snagging era , average one ounce each snagging hook) and lures.
A diver before the Newago dam was removed claimed many pounds of lead in ten minutes. Plus lots of lures.
He reported snags/trees that looked like Christmas trees there was so much tackle on them.
Which I believe. As I've pulled some snags with a self built grappling hook that yielded lots of lures.
Another guy I knew used to snorkel a river near me where tubers and canoe renters lost all kinds of stuff. Full beers. A money clip one time. Sunglasses and more sunglasses . Ect..
Anywhere boats launch or dock , ice fishing sites.
Heck , if I could have back the ice spuds and anchors I've seen go bye bye...
The newer style method of using Augers to drill through Ice has had a few augers go through the ice. They make a "keeper" disc now for many.
A lake nearby has a scuttled canoe divers report past the launch in deeper water.
A museum farther on has a birchbark canoe recovered out of the first lake I knew. (And fished!)
Not a new frontier. But a less hunted one around this region for you(s)!
What was once a grove of trees left over from the working days of this former quarry (and now popular diving resort) are absolutely mesmerizing.
www.onlyinyourstate.com