Dugway Brook spends most of it time underground. It first can be seen nearby (1 cache there) and then goes underground again before it reaches Cain park and the valley of Muggles (4 or 5 caches there). It shows itself again in Cumberland Park for a time (2 or 3 caches there). It shows itself one last time in scenic Forest Hill Park (8 or more caches there). I'm giving this a 1.5 terrain rating because you (depending on your height) may not be able to see it.
FTF honors go to Brownstown GeoDawgs, JameEJames, and RaydawgRay.
CO updated the hint on 5/7/2018.