[tz] TZDB use cases

Clive D.W. Feather clive at davros.org
Tue Oct 5 06:55:06 UTC 2021

Jacob Pratt via tz said:
>    At least with regard to US states, internal state borders do *not*
>    change when rivers change course.

My understanding of US law (from a consultant geologist who did this stuff
for a living) is that if a river gradually moves, borders (including both
properties and administrative areas) move with it. But if there's a
catastrophic change - e.g. a heavy storm causes the river to burst a bank
and take a new route - then the border does *NOT* move.

For a European example, look at the border dispute between Croatia (who
claim the cadastral boundary) and Serbia (who claim the thalweg boundary).

Clive D.W. Feather          | If you lie to the compiler,
Email: clive at davros.org     | it will get its revenge.
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