Welcome to Arrowwood Cedar Shore Located near Chamberlain in Oacoma, South Dakota off I-90, Arrowwood Cedar Shore Resort rests along the banks of the Missouri River. With stunning views of open waters, and ample opportunities for outdoor recreation onsite, were a year-round destination. Planning your first visit? Weve earned a certificate of excellence from Tripadvisor and our customer service team will ensure you have an unforgettable stay.