rc - The waterfall that you can get arrested for is actually part of the Spring Lake Dam (next to Joe's). The TX Natural Resource Conservation Commission - now the TCEQ - apparently has condemned the dam. This happened after the October 98 flooding that, according to the state, weakened the structural integrity of the 100+ yr. old dam to a dangerous degree. So as it is now, the great protector will haul your butt to jail for going near the dam.
My opinion . . .remove it entirely.
I have not been down to SM in a couple years, but that is where I went to college and know the river, and others in the area, pretty well.
Give me an email whenever you are headed that way. My fiance's brother still lives down there, so we always can find an excuse to go, and the water is always warm. It would be great to hook up for some paddling. Later.