And while Willow Valley's indoor water playground is a first among county hotels, Outdoor World's Circle M Campground near Millersville has had a indoor water park for about 12 years.

It’s not signed, but this is FR 234C, a 0.2-mile route that crosses over Willow Valley south of the dam. It’s a fun detour, but to get to the dam, skip FR 234C and continue 0.2 mile past the ...