OK, now I really feel stupid. I've got my DeLorme Colo. Atlas and Gazetteer out, looking on page 50, at hwy 67 between Woodland Park and Deckers, and I don't see anything marked Rainbow Falls Reservoir, or anything Rainbow Falls either. Looks like there's an unnamed road to the left about 1 mile past Manitou Park Lake, off 67, about 7-8 miles n. of Woodland Park. Same place?
Also looks like there's only two ways to get there, 67 from Sedalia down through Deckers, or 24 from Colorado Springs up to Woodland Park, then 67 north from there. Doesn't look like there's any easy way to get there from Parker. ARRRRGGGHHH!!!!
What about the Family Shooting Center at Cherry Creek State Park, is it OK? I was assuming every gangbanger and knucklehead from Aurora goes there to work on their drive-by skills.