|Bayocean Peninsula shifted east|
After decades of eating away at the entire western shore of the peninsula, the sea totally wiped out what was left of the thinner southern section of Bayocean in 1952. The northern hills were left as an island until the dike was built in 1957. These hills were platted, and some sites sold, but no building were ever built there. They'd still be there if they had been because their topography has changed little, including the sand gap and U turn on Dike Road that is shown just north of the gate on the diagram.
To create the diagram I spliced together two Tillamook County Assessor maps: 1N1031a and 1N1031d. The original town plat shows the boundaries of Bayocean as it was then, which I highlighted in red. Dike Road and the current shore line is highlighted in blue. The reason the blue line crosses the open part of the U turn on Dike Road is that the interior of it is wetland.
The building locations were taken from a drawing provided by Bert and Margie Webber on page 42 of the 1999 edition of Bayocean: The Oregon Town that Fell Into the Sea. I added more notes of my own to give perspective.
My method is admittedly crude, but it helped me understand Bayocean then and now, and I hope it will do the same for others.