Cottonwood covers a large open and flat lowland area bordering the east side of the Des Moines River. Wildlife is abundant throughout the project. White-tailed deer, turkeys, pheasants, waterfowl, and other small game animals roam the lands around the lake.
Recreation: Visitors come to Saylorville Lake for its great boating, sailing, water skiing, windsurfing and swimming opportunities. Anglers fish for walleye, wiper, largemouth bass, catfish, crappie and northern pike. The paved Neal Smith Trail winds 24 miles from Des Moines to Big Creek State Park and connects the campgrounds on the east side of the lake. It is designated as a National Recreation Trail and is used for biking, hiking, jogging, walking and in-line skating.