USA Today
DENVER (June 8) - Drought, a fixture in much of the West for nearly a decade, now covers more than one-third of the continental USA. And it's spreading.
As summer starts, half the nation is either abnormally dry or in outright drought from prolonged lack of rain that could lead to water shortages, according to the U.S. Drought Monitor, a weekly index of conditions. Welcome rainfall last weekend from Tropical Storm Barry brought short-term relief to parts of the fire-scorched Southeast. But up to 50 inches of rain is needed to end the drought there, and this is the driest spring in the Southeast since record-keeping began in 1895, according to the National Climatic Data Center.
This drought has been particularly harsh in three regions: the Southwest, the Southeast and northern Minnesota.
Severe dryness across California and Arizona has spread into 11 other Western states. On the Colorado River, the water supply for 30 million people in seven states and Mexico, the Lake Powell and Lake Mead reservoirs are only half full and unlikely to recover for years. In Los Angeles County, on track for a record dry year with 21% of normal rain downtown since last summer, fire officials are threatening to cancel Fourth of July fireworks if conditions worsen. On Wednesday, Los Angeles Mayor Antonio Villaraigosa urged residents to voluntarily cut water use 10%, the city's first such call since the 1990s.
Donald Wilhite of the National Drought Mitigation Center says the Southwest and Southeast are "becoming gradually more vulnerable to drought" because the rising population will need more water. "We think of water as an unlimited resource," he says. "But what happens when you turn on the tap and it's not there?" See: And It's Only Getting Worse
No comments:
Post a Comment