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Author Question: List some regions of the U.S. where there are significant populations living on alluvial fans. Why ... (Read 49 times)

drink

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on: Jul 13, 2018
List some regions of the U.S. where there are significant populations living on alluvial fans. Why is it dangerous to build there?
  What will be an ideal response?

Question 2

Which was the most disastrous dam failure in recent decades?
   a. Lake Vyrnwy Dam in Wales
   b. Gordon Dam in Tasmania
   c. Cougar Dam in Oregon
   d. Banqiao Dam in China
   e. Buffalo Bill Dam in Wyoming


Eunice618

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Reply #1 on: Jul 13, 2018
Answer to Question 1

ANSWER: Hundreds of thousands of people live on gravelly alluvial fans in Los Angeles, Palm Springs, Phoenix, Tucson, Salt Lake City, Denver, and elsewhere. Most of these fans were built up from fast-moving slurries of sand, gravel, and boulders (debris flows). Even arid regions can have periods of intense or prolonged rainfall. People who live on such fans are at considerable risk from debris flows.

Answer to Question 2

ANSWER: d


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