View Full Version : Devonian Fossil Gorge

07-22-2006, 05:09 PM
Another early AP mission for me, I got up at 4:45 am http://static.rcgroups.com/forums/images/smilies/eek.gif to get some pics of the Devonian Fossil Gorge located beside Coralville Resevoir in eastern Iowa.

The Flood of 1993 was the costliest, most devastating flood in U.S. history according to the U.S. Geological Survey. Floodwaters covered as many as 23 million acres of agricultural and urban lands in the Upper Midwest for weeks. The unusual duration and magnitude of this event was triggered by a wet-weather pattern that had persisted since early in the year, followed by a series of intense rainstorms in late June and July. Iowa found itself in the center of the catastrophic flooding that resulted.

Among the effects of the 1993 summer floods in Iowa was the overflow of the emergency spillway at the U.S. Army Corps of Engineers' Coralville Lake, an event which lasted 28 days. The floodwaters ripped out a road and campground, and scoured away as much as 15 feet of glacial-age sediments to expose a remarkable expanse of 375-million-year old (Devonian) fossiliferous bedrock.

Fossil and flood information (http://www.igsb.uiowa.edu/browse/flood93/flood93.htm)

I remember the flood well, I filled sandbags for days trying to protect our community.

Here are the pics - I was standing in the spillway for my TO & LZ so I figure the water was 25 feet over my head in 1993.

* I threw a empty beach shot in for you guys ;)


< I should have waited another 15-20 min for the sun to get higher, the pentax didnt fair so well trying to focus with all the shade >