Tuesday, April 25, 2006
Another Bellingham pocket beach - though this one is a bit more accidental than Marine Park. I think the locals refer to this as Cornwall Beach (south end of Cornwall, where Pine comes down the hill). This is a tiny beach, trapped in a corner where two filled and riprapped shorelines intersect. I've called these beaches opportunistic pocket beaches - they are common on industrial shorelines where historic modifications create headlands, between which small beaches can form from whatever sediment is available. There are some nice examples along Ruston Way in Tacoma. The orientation of these beaches is a great indicator of predominant wave direction. These are often good candidates for enhancement and they are excellent demonstrations of what might be possible on urban waterfronts where pocket beaches are an environmental or public access improvement over riprap and construction debris.
Marine Park. A few years ago this was riprap and old concrete rubble. Nice view, but no beach, no easy way to the water, a mess. But the rock was pulled out, some of the fill removed, and a small pocket beach built. Where waves can only approach from a single direction, pocket beaches can be very stable and highly predictable. At this site, waves can approach from a variety of directions and the beach's behavior over time may be a bit more complicated. The basic geometry should work great, though I wish they would plant beach grass and add large logs in the backshore. This beach would be a great place to launch kayaks and it is a great contrast to the railroad grade to the south and the industrial edge to the north.
Thursday, April 20, 2006
This site at the south end of Anacortes industrial waterfront reminds me of Dickman Mill in Tacoma before it was cleaned up. You can still see the beach and the shoreline trying to show through, despite the piles and the concrete and the thick layers of wood waste. These sites are fascinating 20th century archaeology, but they are also incredible opportunities. Maybe local priorities will see this redeveloped for marine industry, though cleaner and more habitat-friendly than last round. But it could also be a wonderful park - linked to the adjacent public trail, with historic interpretation, pocket beaches, and maybe even a small coastal wetland. Anacortes has already done a nice job converting other old industrial sites to public parks, while also maintaining a working waterfront.
Wednesday, April 19, 2006
Langley was originally hung over the edge of the bluff, just like Coupeville and Seattle, but at some point a seawall was constructed and the base of the bluff was filled (a common practice on South Whidbey). The park is a wonderful amenity and provides great access along the shore, but it also eliminates the entire upper portion of the beach (one doesn't walk this beach when the tide is in). It's sandy at the east end, except for the ugly riprap at the base of the wall. The beach is more gravelly to the west. And a little farther west, there is actually a forested, unarmored bluff that reminds us of what it all must have once looked like (well, there were probably some bigger trees).
This was once Flounder Bay, southwest of Anacortes. It is now Skyline Marina and the surrounding community (click on the title of the post to see the aerial). In the 1920s, there was a huge lumber mill built over the beach, remnants of which are still visible. Later there was a seaplane base. And in the late 1960's modern Skyline began to take form. It is one of several "canal" style developments that occurred during that period - others include Lagoon Point on Whidbey, Shelter Cove in La Conner, and Birch Bay Village. All were originally large coastal wetlands.
The historic maps show the original inlet to Flounder Bay at it's western, downdrift end, but at some point, the inlet was moved to the eastern end (never let nature get in the way of convenience). The eastern jetties isolate the spit from it's sediment source. In addition, the extensive fill placed on the spit probably buried whatever sand-gravel beach once existed. All that's left in front of the seawall is a starved cobble beach and old riprap. Maybe it's a good thing that the public access is limited! In another place and time, this would still be a natural spit and salt marsh and a park or it would be a developed spit with a destination resort, lots of public access, and a great beach. Either of which would be preferable to what we ended up with.
Two more bluff shots from the field trip on the 4th. Nice contrast in geology, although both are on the west side of Whidbey Island. One is north of Ebey's Landing and consists entirely of recessional gravels. Few Puget Sound bluffs are geotechnically simpler. The other is Double Bluff, a thick pile of interglacial and glacial sand, along with enough other stuff to create a very complex slope.
Thursday, April 06, 2006
One of the nicest examples of a large deep-seated landslide on the Sound, this one stretches for almost two miles along the west side of Whidbey Island. As with most of these complex slides, some parts are more active than others. This segment, just north of the public access, was a mess when I first saw it in 1990 but every visit brings something new.
This area has moved significantly again this winter. The road north of the parking area has failed and the pictures show where the toe of the slide has been pushed up through the gravel beach. The house and the early generations of seawalls in the pictures were already destroyed by the mid-1990s, but have continued to ride out the landslide.
Swantown, on the northwest side of Whidbey Island. In the 1970's, a timber, later concrete, seawall was built out on the beach, backfilled, and For Sale signs put up on the lots. The 1979 storm (the one that took out the Hood Canal Bridge) destoryed the wall and it's been crumbling ever since.