It is true that the large majority of the trout population in the Cumberland River is produced from stocking at the Wolf Creek National Fish Hatchery located just below Wolf Creek Dam, there have been signs that there is successfull reproduction. I have caughten numerous trout, particulary in the tributaries to the CR, of 4" or smaller. These naturally born trout are distinguished by a series of purple-violet spots on their sides. These spots will disapate with age, but will distinguish native trout from stocked trout at a young age.

As for the algae growth on the CR, it is becoming a problem. The years of low flow is to blame for this. Once the normal flow is restored to the river, it should return to it's prior state. For now, just keep cleaning it off your fly! It does provide excellent nurishment and cover for aquatic insects. I guess that is one plus.