Lac LaBelle, MI
Located in a picturesque little park in Lac LaBelle, Haven Falls can be seen from the car and can also be viewed closer. The creek drops 15-20 feet here, and is seasonally more or less spectacular, usually dependent on recent rain. Michigan's Keweenaw Peninsula has many great waterfalls, and almost all of them are easy to access.
For more sightseeing in the area, check out the Bete Grise (Mendota) lighthouse which is just several miles down the road, marking the entrance to the Mendota shipping canal.
Getting there: From US-41 south of Copper Harbor, take Lac LaBelle Rd. east and watch for (brown wood) signs at the bottom of the hill directing you to both Haven Falls, to the right, and the Mendota Lighthouse, left and around the bend at the end of the road.