There's a fly fishing only stretch of water on the Conewago that the Northern Va.and Adams co. TU did wonderful restoration work .it's about 5 miles out of town on ,I think> rt 29(i'll have to check that to be sure).There's an old bowling alleyon the right hand side where you can park your car./ Directly across the street is wherr the Fly fishing stretch starts.
E-mail me for more ,and perhaps more accurate info
Best,
Steve