# Rivers flowing both directions at the same time....

**URL:** <https://boards.straightdope.com/t/rivers-flowing-both-directions-at-the-same-time/133720>\
**Category:** Factual Questions\
**Created:** [October 24, 2002, 5:56pm UTC](https://boards.straightdope.com/t/rivers-flowing-both-directions-at-the-same-time/133720 "2002-10-24T17:56:29Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Weeks](https://avatars.discourse-cdn.com/v4/letter/w/bbce88/32.png) [@Weeks](https://boards.straightdope.com/u/Weeks)\
**Post date:** [October 24, 2002, 5:56pm UTC](https://boards.straightdope.com/t/rivers-flowing-both-directions-at-the-same-time/133720/1 "2002-10-24T17:56:29Z")

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Not to hijack [this](http://boards.straightdope.com/sdmb/showthread.php?threadid=140909) thread, I wonder if a river can support salt water flowing one way under fresh water flowing the other way.  
(high tide in conjunction with heavy rains)

What would this be called?