Survey of the Northern and North Western Lakes, made in obedience to acts of Congress and orders from the headquarters of the Corps of Engineers. St. Lawrence River. Chart No. 1. Projected from a trigonometrical survey

Map depicting part of the St. Lawrence River between Strawberry Island and Cornwall Island. Upper Canada, or Ontario, is North of the St. Lawrence and New York is South. Relief shown by hachures. Depth shown by soundings and stippling. Shows detail on islands and along the river shoreline, including vegetation, major roads, and settlements. Features crest above title. Includes note below title and scale: ""Aids to navigation corrected to January 1, 1880."" Lower right corner features a list of authorities that informed the map; a table showing the mean heights of the river at different periods at Ogdensburgh, N.Y.; a note related to latitude and longitude and how depth is indicated; and a table of magnetic declination. Sheet one of two in this collection.