Great Smoky Mountains National Park
Some basic definitions of streams:
Freestone creeks originate in the higher elevations and are formed by precipitation including snow, rain and dew. They are acidic in nature and usually do not support a large population of trout. Water flow and water temperature vary greatly due to rains and snowfalls.
Spring creeks on the other hand are formed by spring water as it leaves the underground aquifers. This water is more alkaline and capable of supporting the aquatic insects that form most of the trout’s diet. As a result, the trout populations tend to be greater. Water flow and temperatures are not as affected by the rain and snowfalls.
For far more information about streams:
Troutu class 1025 Freestone Creeks, Spring Creeks and Tailwaters
Troutu class 427 Fly fishing Good Trout Streams vs. Poor Trout Streams.