Take Hwy 410 east out of Enumclaw, go over Chinook pass.
About 15miles over the Pass turn right on Bumping River road. It's 1/2 mile past the 88 mile marker.
Go about 8 miles down the Bumping road and you will find the community of Goose Prairie. It's one of the few places in the NF that the property is privately owned.
Go another 4-5 miles and you will come to the Bumping lake Dam on yer right.
Take care,
Lee