Approximate Cotidal Lines of the Pacific Coast of the United States

A nice reference chart showing the status of the U.S. Coast Survey's progress along the western coast of the United States. The chart shows primary place names, points, harbors, bays and larger towns or cities. The chart includes notes and descriptions of the cotidal data.

IMPORTANT NOTE:

All of our United States Coast Survey (USCS), United States Coast & Geodetic Survey (USC&GS), and similar maps and charts have been professionally unfolded and flattened using humidity baths, semi-permeable membrane, and drying blotter techniques. Most others you typically see on eBay have not been, and worse, are quickly and crudely unfolded for the low-quality photos you see. Unfolding these maps in that way is damaging and weakens them. Please be aware.