Another play run below Round Rock, which can be combined with the stretch from Veterans Park Dam to CR 122 for a total of 8 miles.
Texas Whitewater describes some "small ledge drops" and "nice waves." More specific beta needed.
Distances and gradient measured using GIS tools in 2015.
Cautions:
The ledge below CR 122 and Dave's Rock below 685 change character with very little change in water level. 6 inches is a big change for these features, and they need to be scouted before playing. Both features are great play spots at various levels but can also change quickly.