Showing posts with label bainbridge. Show all posts
Showing posts with label bainbridge. Show all posts
Friday, October 19, 2012
Port Madison Bay
This is another site where an old bulkhead - or perhaps more accurately, several old bulkheads and a lot of rubble - have recently been removed. A complex partnership of many different people came together to make this project happen.
This is a relatively low energy shoreline - wave action fades quickly entering the bay and the last real beach ends just short of this site. That doesn't mean that the banks aren't subject to erosion, but the rates are low and the site is developed in such a way that minor erosion is not a problem. Over time, some of the bank will crumble and a few trees will fall, but the resulting shoreline will be richer and more natural. Ironically, it looks like much of the past erosion is of fill material that was placed over the natural bank - which is so often the case.
This is a concept that could apply to many, many sites in Puget Sound and maybe some more examples like this one will help show folks that unarmored shorelines can provide as many benefits as those that are buried in rock and concrete.
Labels:
bainbridge,
kitsap,
puget sound,
restoration,
salish sea,
washington
Location:
Port Madison
Sunday, April 26, 2009
Kitsap Bluffs
The northern Kitsap Peninsula is a reminder of the diversity of Puget Sound's coastline. Most of the shore consists of bluffs built of glacial and other late Pleistocene sediments, but variation in the geologic details, the topography, the exposure, and the nature of the beach make simple generalizations tough.
We covered a lot of shoreline and I've included several different locations in this single post - the bold heading links to a map.
Kingston. Parts of the shoreline north of Kingston were the site of big deep-seated landslides in the 1970s (and probably every few decades for millennia before that - we just didn't notice).
North of Apple Cove Point. Apple Cove Point itself is a barrier sporting many large homes at sea level (20th century sea level, that is), but the bluffs to the north of it are the kind of mess only a geologist can appreciate. Very large landslides in the late 1990s impacted several proposed building sites - better the slopes failed before the homes were built than after!
Indianola to Point Jefferson. Beautiful south-facing bluffs, though lots of variety between the high bluffs in Indianola and the lower till bluffs east of Doe Kag Wats (the beautiful barrier estuary in the middle of this reach).
Seabold. These bluffs on the northwest side of Bainbridge are among the few stretches of high bluff on the island not buttressed in rock. Classic Puget Sound bluffs - heavily forested, slow but not negligible erosion, subject to shallow slides and occasional larger slumps, and lined with big houses and nervous property owners. But the beaches are what they are supposed to be - lots of sediment, lots of wood, looking like a shoreline, not a canal. Too bad many people's view of the shoreline environment is a view, not the environment. The trees go down and the seawalls go up.
Labels:
bainbridge,
kitsap,
puget sound,
salish sea,
washington
Thursday, November 20, 2008
Strawberry Plant
It used to be a strawberry packing plant, but this site on Eagle Harbor had fallen into disrepair long before the county acquired it some years ago for a future park. The plant was built on lots of fill and lots of pilings next to the mouth of a small creek - now there's a chance to pull much of this out and restore the shoreline while also creating a nice little community park.
Labels:
bainbridge,
kitsap,
restoration,
salish sea
Eagle Harbor
The shorelines at the head of Eagle Harbor are too sheltered to form beaches - there's just not enough wave energy to move much coarse-grained sediment. For a beach to form, there's got to be enough wave action to keep the sand and gravel moving around so the marsh can't get a foothold. We looked at Leslie Landing ten years ago when it was first developed and wondered how the shoreline would hold up. No problem - the high tide line is now marked by a narrow band of dense Salicornia.
Labels:
bainbridge,
kitsap,
salish sea
Sunday, January 13, 2008
Battle Point
Also from November. Battle Point is a neat little cuspate spit and lagoon on the western side of Bainbridge Island. The inlet is on the south shore, while the northern limb shows some signs of continued accretion. Note the newer berm in the upper photo. Erosion of the inlet exposes peat from an earlier incarnation of the lagoon and marsh.
Labels:
bainbridge,
kitsap,
puget sound,
salish sea,
washington
Point Monroe
Point Monroe, at the northeastern tip of Bainbridge Island, is a poster child of a developed barrier beach. It looks more like a causeway than the recurved spit that it is. One need only show an aerial photo and say "sea level rise" and everyone gets the point. It is the northernmost end of a larger barrier that begins a mile south and that includes Fay Bainbridge State Park.
Point Monroe was hammered by the back-to-back northerlies of December 1990. I suppose it will be hammered again - much more frequently when sea level is a foot higher.
Labels:
bainbridge,
kitsap,
puget sound,
salish sea,
washington
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