White Breast Creek is near Knoxville, IA and Red Rock Lake.  This is one of the creeks that feeds into Lake Red Rock and under the right conditions can create a nice whitewater run.  Basically you need the lake to be low to average height and localized rain.  If the lake is above normal the water will backed up to far in the creek so the rapids will be submerged.  So, with a little luck and pay attention to the conditions in that area this can be a nice whitewater run for about 100 yards.