Shoot.... low 70's is the warmest water ever gets in Utah. Lake Powell is a different story. Most of Northern Utah is 70 or less until June every year (This year, we never saw anything higher than 71 at either Jordanelle, Strawberry or Flaming Gorge). I never wear a wetsuit or think twice about jumping in the water unless it's sub 65. You guys in Florida are wearing full length wetsuits at 70??? My five year old jumps in at 60.