Tuesday, March 07, 2006

Orcas Island

North Beach. The riprap was removed almost 14 years ago and the beach still looks great. Some years the beach builds up and some years it erodes, but the gravel responds with the changes, whereas the big rock did not. My theory is that erosion on these broad pocket beaches reflects multi-year changes in the dominant storm direction, with the beaches essentially sloshing back and forth within their rocky containers.

Deer Harbor. A road along the top edge of an eroding bluff is never a great idea. Usually we end up with a revetment burying the beach and a road that continues to fail. But here, the county moved the road inland, leaving a public trail and viewpoint and the beach, too. Thank you.

No comments: