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South Pass, Louisiana 1:24,000-scale Orthophotomap


  • Go to Map Locator and Downloader and search "south pass".
  • Discuss the differences between looking at the Mississippi Delta at small and large scales.
  • How can people access this area? (by helicopter only)
  • What are the economic activities here (on map: oil field)? What else? (fishing, boat tours).
  • What sediment type is here? Why are there no rocks in this area? Discuss the mechanics of sediment transport by rivers.
  • Compare this map to a USGS topographic map of Lake Itasca, Minnesota (Mississippi headwaters), and a map of Dubuque, Iowa. What are the differences in landforms between each region? What is the gradient of the river in each map, and why do the differences exist?