This is not a recommended activity, but here is a video of some cliff jumpers leaping into the water at Billy Clapp Lake.
Billy Clapp Lake sits in the eastern portion of Grant County and is formed by the Pinto Dam.
[youtube]http://www.youtube.com/watch?v=Zdj5izNu2po[/youtube]
View photos of Billy Clapp Lake.
View photos of other North Central Washington lakes.
View photos of Pinto Dam.