There is some concern that heavy use by canoe-type boats could disturb the streambed and increase turbidity in the water. In addition to waters supplied by the lakes, several named tributaries feed into the river, including Emmons, Naylor, Hartman, Allen, and Radley creeks. Eske Creek Eske Creek is the outlet for spring-fed Eske Lake. Little is known about this one-mile long stream but it is believed to be trout water. Hartman Creek Hartman Creek originates in Hartman Creek State Park and empties into the Chain O'Lakes.
Intensive agriculture is in the area.
Although this two-mile long stream is listed in the Wisconsin Trout Streams book, Hartman Creek does not contain trout. I trout stream that empties into the Iola Millpond. Several trout holding areas have been destroyed by heavy siltation from upstream agricultural erosion. Murry Creek, a four-mile long Class I trout stream, is the major feeder stream of Radley Creek. Murry Creek is a major spawning stream.