I went on a Charter through Scuba North to the S. Manitou Island wrecks in July.
We had a great time.
We got lucky and had an incredibly beautiful day with only a slight breeze.
The Three Brothers of Buffalo
Depth 7 feet to 40 feet at the stern.
Visibility was at least 50 feet. We could see the bottom and the whole stern from the dive boat.
The sides of the wreck are now encrusted with Zebra mussels. The deck is about 1/2 covered by sand and 1/2 open to the wood. The sand on the stern deck has washed off along the sides, filling in along the sides of the wreck. The wreck is still full of sand, but you can peer in a little bit now. A number of smaller fish and schools of baitfish visited us during the dive. Very enjoyable.
The Walter L. Frost / The Francisco Marazon
These two wrecks are separated by maybe 100 ft. Our dive boat anchored at the edge of the Frost and we visited both wrecks.
The Frost is mostly boards and rubble on the bottom in 10-13 ft of water. (Lake levels have seriously dropped as this was a 20 ft depth before.) The usual rubble oriented fish life and such.
The Morazon sits upright and above the water and can be seen even from the top of the Sand Dunes park. Depth near the hull is about 15 ft. There are huge holes in its South side and the bow, but do not enter. The structure is rusting away and collapsing. Twisted and bent steel structures and of course the hull are what you will see here.
None of these wrecks can claim any great claim to fame anymore. But, if you are going with some newer divers (as we were) these are great introductions to see wrecks at shallow and easy dive sites. The overall natural beauty of the area makes for great scenery for the whole trip.