Kitsap Waterfall Survey: "Contact Cascades"-My 20th waterfall!

Following my lecture at the Norm Dicks Government Building in Bremerton, one of the audience members came to me and told me of a waterfall on the Beaver Pond Trail within the Green Mountain State Forest. Their description seemed to indicate something small, but they insisted it was over bedrock, and so I decided to investigate.

As the wind howled through the trees and branches of various sizes fell all around, I hiked up the side of Green Mountain until I reached the Beaver Pond Trail. Within a few hundred feet, the trail crosses over Grata Creek, a stream running down the northwest side of Green Mountain. Grata Creek has long been on my radar, as it drops rather rapidly from high up on the mountain slopes before emptying into Tahuya Lake.

Lidar imagery map of Grata Creek. 

Even with these suspicions, I realized that most of the creek was bounded by private property, and so any falls and cascades would be inaccessible to me. Grata Creek originates on a spring fed lake tucked at the head of a forested valley at about 950 feet. The creek flows from this lake and bypasses another lake. It is after this second lake the creek steepens significantly and the private property begins. This is is the only place I thought falls would occur. I was wrong

Shortly after exiting its source lake Grata Creek meanders through some open pine forest, then less than a quarter mile later, it passes underneath the Beaver Pond Trail bridge, and immediately skips over a series of wonderful cascades over 20 feet in height, right next to the trail and very easily visible.

Bridge over Grata Creek

On my survey I was only able to observe 4 tiers in detail, there may be one or two below these, but I was unable (and really, unwilling) to fight through the thick brush to see them, so they will have to wait for a later visit. Of the tiers I did observe:

 The cascade begins with a five foot sliding drop over some beautifully dark volcanic rock called  Gabbro.

First tier "Contact Cascades" 

The second tier is a little more complex; two-thirds of the creek pours into a deep crack in the bedrock, while the remaining portion slides gradually down the rock. Here some interesting geology is seen. On the north side of the stream the bedrock is composed of the Gabbro the first tier goes over, but on the south side of the stream the rock is Basalt, which upon close observation, has even formed into small disorganized six-sided columns. In geology, the term used for where two different rock types meet is called a "contact." Thus, since this cascade appears to occur on a contact, I have named it "Contact Cascade."

Second tier of "Contact Cascades" 

The third tier is a small little three footer choked with forest debris and relatively ugly, the 4th tier is a long sliding cascade probably five or six feet high. After this the creek appears to go over at least one more drop, but heavy brush prevented me from getting an up close look.

Thanks to the person who suggested this fall to me. It is a great contribution to the survey!

One final thing to note, "Contact Cascade" is my 20th surveyed waterfall! Hard to believe I've made it this far after starting this project a year ago. Who knows, maybe I'll find 20 more!