Tree-ring data gives history of droughts

Aug 21, 2005

Tree-ring data gives researchers a better idea of drought history in the Western United States.

Using data from tree rings, University of Arizona researchers conclude the water supply for the Upper Colorado, Salt and Verde river basin fluctuated in synchrony -- at the same time -- during periods of severe drought. The study goes back almost 800 years in the Salt-Verde basin and covers waterways from the states of Arizona, Colorado, New Mexico, Utah and Wyoming.

"Prior to the findings from this study, the conventional wisdom was that runoff from the Colorado River would be available to make up for deficits on the Salt and Verde rivers during times of extreme drought," said Charlie Ester, Salt River Project's manager of Water Resource Operations.

"The bottom line is that the Upper Colorado Basin and the Salt and Verde basins work together as one entire region."

Copyright 2005 by United Press International

Explore further: Mapping the world's linguistic diversity—scientists discover links between your genes and the language you speak

Related Stories

Recommended for you

Lady, you're on the money

7 hours ago

So far, women whose portraits appear on U.S. money have been a party of three. Excluding commemorative currency, only Sacagawea, Susan B. Anthony and Helen Keller appear on coins in general circulation, according ...

Old World monkey had tiny, complex brain

9 hours ago

The brain hidden inside the oldest known Old World monkey skull has been visualized for the first time. The creature's tiny but remarkably wrinkled brain supports the idea that brain complexity can evolve ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.