This is where I swim. The river comes up out of the ground right behind that dam at Aquarena Springs and Spring Lake. It is a constant 72 degrees year round and is the cleanest river I have ever been in.
This runs right through the middle of my town.
Check out this video too see how much higher it is this year than last year.
http://www.youtube.com/watch?v=YXp0hkWovHg
I did the audioswap on this one since the mic on that camera is horrible and there wasn't really much to listen to anyway.