Work at Chamberlain's marina shows value in river resource The urgency to maintain the marina as a strong resource for local residents and visitors alike shows its value to the city, said Chamberlain City Engineer Greg Powell. Written By: Luke J. Hagen | 1:58 pm, Apr. 16, 2021 × Workers with Dredge America, of Kansas City, recently work at the American Creek Campground in Chamberlain. (Luke Hagen / Republic) CHAMBERLAIN — There’s a pretty big boat in the American Creek Marina. A crew has been on scene at the public river access in Chamberlain for weeks to conduct a significant dredging project that’s mostly funded by federal and state grants.