@mike-berry I'm not sure this answers your question of where to start, but it describes the initial survey of a canal route. See page 371-391. I ...

@hubermar here were a couple of hefty solar flares in December 2024. the one on the 29th affected my solutions.

Only a reference monument but.....The Beginning Point of the U.S. Public Land Survey is the point from which the United States in 1786 began the forma...

Hussain, Hi! Sorry I have no contacts in that hemisphere! Best of luck to you.

old timer solutions, just tape or pace and sight.