Coastal & Marine Geology InfoBank

Home FACS Activities Atlas Geology School Related Sites More

USGS CMG InfoBank: Stream Capture

Skip navigational links
Dictionaries: Our Mapping Systems   The USGS and Science Education   USGS Fact Sheets   Topics   Keywords   Data Dictionary   Metadata Dictionary   Computer Terminology   Digital Formats  
InfoBank Terms: Activity ID   activity overview   crew   digital data   formal metadata   lines   metadata   NGDC   port stops   project/theme   region   ship   stations   time   virtual globe   year  
Data Types: bathymetry   biological   geochemical   gravity   ground penetrating radar   imaging   LIDAR   logs   magnetics   metering equipment   navigation   samples   seismic   total station   definitions disclaimer  
Data Formats: ARC coverage   E00   FGDC metadata   gridded/image   imaging   material   scattered/swath   Shapefile   vector/polygon  
Comment: 15:11 - 16:11 (01:00)
Source: Annenberg/CPB Resources - Earth Revealed - 20. Running Water II: Landscape Evolution
Keywords: "Nancy Powell", "U.S. Army Corps of Engineers", "Atchafalaya River", "Mississippi River", "stream capture", river, Fiske, delta, sediment

Our transcription: The Corps of Engineers realized that there was a potential problem with Atchafalaya capturing the Mississippi back in the 1950's.
A gentlemen by the name of Fiske, who was a geologist, did a report for the Corps of Engineers, the Mississippi River Commission, in which he studied old delta systems of the Mississippi and old diversions of the Mississippi, and compared those to what was happening on the Atchafalaya and the Mississippi.
He theorized that the Atchafalaya and the Mississippi were in an intermediate stage of capture.
And that if something was not done by about the 1970s, about 1975, we would reach a critical stage of capture in which the Mississippi would no longer be able to carry any more flow because of this build up of sediment, and the flows would go down the Atchafalaya.
He said that this would happen when about 40 percent of the flow was going down the Atchafalaya from the Mississippi.

Geology School Keywords
Skip footer navigational links

Coastal and Marine Science Centers:  Pacific   St. Petersburg   Woods Hole  
InfoBank   Coastal and Marine Geology Program   Geologic Information   Ask-A-Geologist   USGS Disclaimer  

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo logo U.S. Department of the Interior | U.S. Geological Survey
Page Contact Information: InfoBank staff
Page Last Modified: Thu Oct 31 04:28:09 PDT 2013  (chd)