Yes, that is one of them and there are a couple more out there somewhere too.
Not sure if your trip has already happened, but here a few more comments. Kirk's fly shop is located on main street and would be the place for current info. The book "A Fly Fishing Guide to Rocky Mountain National Park" by Schweitzer is a good reference book. A few general (and usually popular) fishing locations with easy access include; the city park in Estes Park to fish the dam's tailwater, anywhere down stream of the dam on the Thompson River, and in the park, the Moraine Park area, the river that runs along side the Fern Lake trail, and on the west side of the park, the Colorado River parallel's the road and has significantly smaller crowds.
Fly Fishers International certified casting instructor