Akers is the general area where the water becomes too warm to support trout. Of course that can vary with the time of year and temperatures. In general, below Akers is smallmouth water.
The Current River and Jacks Fork River are outstanding locations for an outdoor get-a-way. Beautiful scenery and cool water, even in the hottest of months. Abundant accommodations from gravel bar campsite to locations that will put a smile on the face of the most discriminating Glamper.
A good mile by mile river map is available at
http://www.missouricanoe.org/river-maps/current.html
Learn more about Missouri Springs
http://www.nps.gov/ozar/learn/nature/springs.htm
State Parks
Montauk State Park - Upper river section
Current River State Park - Lower river section (below Akers Ferry)