Many creeks, rivers, waterfalls and lakes (plus, the ocean) are places to just get out there and enjoy the water.
This can be done in several ways: jet skiing, fishing, kayaking, white water rafting, speedboating, inner tubing, kitesurfing, et al.
The following pictures are a small sample of the water recreation possibilities in Oregon and Washington.
Triangle Lake
Blue River Lake (Reservoir)
Umpqua River
Clackamas River / Cat Creek Falls
McKenzie River / Mason Creek Falls
How it is done 3.5MB
How it is not done 4.3MB
Keep your eyes closed
Leaburg Lake / Leaburg Dam
Hills Creek Lake
Dexter Reservoir
Row River / Wildwood Falls
Brice Creek / Zolotoy Falls
White Salmon River / Husum Falls
I'm feeling negative g's
Oregon Coast / Lincoln City
Oregon Coast / Newport
Oregon Coast / Florence
Oregon Coast / Reedsport