wrote:

Wait until summer when the OAT is at least in the 90's and the water
temp coming out of the bottom of the Canyon Lake dam will at least be
up into the upper 50's degrees F.

The water coming out the bottom of the dam stays in the 50-53 degree
range year round - I've been in it, in wetsuit, and I've dove to the
bottom of Canyon Lake before. River temp close to 70 degrees by the time
you get to Gruene crossing. And besides.. after a few beers, you dont
shiver as much anymore!! grin

We had an 86 degree day last weekend. Why wait til REAL summer temps in
the triple digits hit.

But hey.. the original recommendation was just to hit the Grist Mill..
thats worth it alone in my book... specially for an out of towner.