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THE BIG BEND DROUGHT
by Carolyn Brown Zniewski
1) In the last 500 years, according to studies of tree growth rings, what was the
period of greatest rainfall in West Texas?
a) 500 years ago
c) 100 years ago
b) 10 years ago
d) 200 years ago
2) How many years of less-than-average rain fall creates the definition of “extreme
drought?”
a) 20 years
c) 25 years
b) 7 years
d) 10 years
3) How much has the volume of water in the Rio Grande dropped in the past 20 years?
a) 25%
c) 15%
b) 70%
d) 50%
4) What is the greatest contributing factor to the present drought?
a) Lack of rain
c) Rise in global temperature
b) Changing weather patterns
d) Increased wind
5) For how many years has the low rainfall in Big Bend created drought conditions?
a) 13 years
c) 11 years
b) 19 years
d) 7 years
Bonus: What is the geographic extent of the present drought?
a) Entire Southwestern USA
c) Chihuahuan Desert
b) Texas
d) Along the Rio Grande
Answers: 1-c 2-a 3-d 4-c 5-b Bonus-a
28
Cenizo
Third Quarter 2018