I have caught them in lake michigamme, michigamme river, michigamme resivior, peavey pond, chicogoan, Petticoat lake, Beaufort lake (in 3lakes), And fish lake. All caught on accident while fishing walleye/pike. If you wanna go catch burbot in numbers then just hit lake superior. Any bay will work as long as its after dark and you will get quite a few all night long. They are spawning right nowish so theyre easy pickins Inland lakes have much smaller populations and getting good numbers is usually tough