You'll also want to bathe your dogs after they swim in this water, in my opinion. Really not something that our family wanted to swim in though. Still, not too bad and at least didn't smell dirty. like, a bit swampy I guess? We didn't get out to the middle of the res or to the other side, but on the south side (near the main entrance) the water was pretty greenish and had all of the little floaty things from the trees above. The water is a little 'gunky', if you will. The staff at Rocky Mountain Paddleboard were lovely & helpful. There is a kayak & paddleboard rental shop onsite, just as you drive in from the main entrance that you pay at. On-leash is required everywhere else in the park, which is nice. The dogs that were in the water, around the park and in the dog-specific beach area were all great! We did not run into any aggressive dogs, they were all friendly & sweet! Owners were watchful and trusted their well-behaved pooches off-leash in the dog area. All of the patrons we interacted with were friendly & lovely humans - both in the water and out.
Park rangers patrolling were always visible, keeping the peace, traffic control, etc. Massive trash bins all conveniently located. That is a MORE than reasonable price (per family/carload) for a day at the reservoir! My gosh, people.
Let me start by saying, don't listen to the cheapskates on here who can't afford $12/day.