Iowa. Clarks Ferry Recreation Area (Mississippi River Project), 12 mi. E of Muscatine on Hwy 22. Spring/Summer 2016 positions: 3. Application deadline: March 15, 2016. Contact Doug Vogel, Park Ranger: 563-263-7913. [email protected]  USACE Shady Creek Recreation Area, 810 Main St, Muscatine, IA 52761.