Looked it up Catskill Creek in one of my books, here's the summary:
NY state has 20 miles of public fishing rights on the creek. There are wild rainbows, stocked browns, and wild browns. The rainbows run small, with 12" a good one, but they are quite numerous. The browns occasionally reach really large sizes, a 29" fish is mentioned in the book. Also a brook trout over 20" above a dam was caught there. Upper creek averages 20 feet wide, and in good years has as many as 86 pounds of trout per surface acre- that's a lot. 7,000 browns are stocked throughout the creek, and 350 are larger 2 Year Olds.
As far as Charlotte Creek, all I can tell you is that it's stocked with about 6,000 browns, and the book's author doesn't feel it's worth the drive from a major metropolitan area.