Yep, unfortunately.
I didn't understand it growing up, but do more so now as I lived out of state for many years ( with much colder lake waters).
My dad had property just off the water at Canyon while we were growing up but we hardly went there mainly due to the water ALWAYS colder (Guadalupe fed), and my grandparents having a place in Granite Shoals on LBJ.
We were ALWAYS on or in the water too, and definitely got a safety brief from Dad, an Uncle, or Grandad before going out on the water.
Understanding more about cold water drownings now ( I worked public safety stuff for 34 years, plus being a diver), Canyon (seems to me) to get more due to the colder water temps, + mixed with alcohol being on board the victim.
While living up in the PNW, we saw lake drownings in the middle of summer with temps in the 80's, but with colder lake water around 68-72 plus alcohol on the boat or at the campground, just meant some very healthy teenager or 20 something was ripe to become a victim just going for a "short" swim. Guys cramp up or get tired out quicker, and slip under without so much as a peep. Silent drowning. Travis gets plenty of these too, as I went on calls there quite a bit also after moving back here.