Sylvania straddles the divide between the
Lake Superior and the
Mississippi River drainage systems, occupying some of the highest ground in the Midwestern United States. Many of the lakes in the park are more than above sea-level. Because of this apex position, these deep, clear lakes are primarily landlocked, fed by springs and local run-off. There are no surface streams entering the park, which is one of the reasons the lakes remain pristine and pure. For this same reason, the lakes are a bit "fragile" (low flush rates, low nutrient loads, etc.). Special fishing regulations on these lakes, including catch and release for all bass, have helped to preserve the lakes' fisheries. The Sylvania Wilderness also features of hiking trails and portages within its . Soils are mostly classic
podzol sandy
loam or loamy sand developed on glacial
till or
outwash. Among the most common
soil series are Gogebic, Karlin and Keeweenaw. There are 50 designated campsites in 29 locations throughout the wilderness, each with rudimentary amenities such as outdoor toilets, tent pads, pack racks (for keeping foodstuffs out of reach of wildlife), and fire-grills. == Flora and fauna ==