Overview Bob Shetler Picnic Area is a day-use facility located in the tailwater area below Saylorville Dam, and is a popular destination for shoreline fishermen. The 26,000-acre Saylorville Lake Project stretches over 50 miles up the Des Moines River Valley. The lake provides a wide variety of recreational activities, including boating, swimming, fishing, hiking and hunting.Recreation Visitors come to Saylorville Lake for its great boating, sailing, water skiing, windsurfing and swimming opport