18 December 2015

The "left" and "right" of river tributaries and forks

For tributaries of rivers, the designations "right" and "left" are assigned based on a view looking downstream.

For forks of rivers, the designations "right" and "left" are assigned based on a view looking upstream.

1 comment:

  1. AnonymousDecember 19, 2015 at 9:30 AM

    what is the fork looks like this?

    http://optical-illusions.wikia.com/wiki/Blivet?file=Fork.jpg

    I-)

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