hydrology

Green Gabbro

Tag archives for hydrology

I don’t actually know what underlies the Middle Devonian brachiopods of my childhood, but I might get to find out soon. Iowa City is experiencing its second “500 year” flood in 15 years, and Coralville Lake has overtopped its dam… again. And the river hasn’t crested yet. Fortunately, my family is on high ground, and…