Saturday, January 24, 2015

Geo 1095: January 24, Day 754: Pools and Riffles

This is a typical stream morphology for mid-sized to small streams with a moderate to low gradient: relatively slow-moving pools separated by small "steps" of riffles. I've always assumed the riffles help keep dissolved oxygen levels close to a maximum, but during summer months, the main variable controlling that is water temperature, not aeration.

Photo unmodified. August 30, 2012. FlashEarth Location (completely guessing on this one, but along correct drainage).

No comments: