送交者: 田牛 于 2006-6-11, 11:39:54:
水博说：“例如美国西部大开发对科罗拉多河的开发建设，梯级水库储备了4倍于河流年径流量的水资源。利用水库汛期大量的拦蓄洪水，不仅大大缓解了洪水对周围社会的威胁，而且可以通过一系列调水措施，为干旱少水的美国西部常年提供充足的水资源。从而使得美国西部成为移民崛起的新大陆，例如，现在的美国加州已经成为美国经济最发达的地区之一。也就是说，尽管科罗拉多河的这种形式的水资源开发已经达到了400%，我们也不能说它的水资源开发过度了。”
水博夸大了科罗拉多河对整个加州经济建设的作用。更正办法比较简单，在加州前面加一个南字， 科罗拉多河对南加州提供水资源，但它不是唯一的，也不能充足的水资源。
Within California, there are two major arteries serving as the sources of surface water for urban and agricultural areas: The Sacramento-San Joaquin Delta (Bay-Delta) and the Colorado River.
The Delta serves as a major water source for approximately two-thirds of the state – over 22 million people. The region is fed by two major rivers: the Sacramento from the north and the San Joaquin from the south. The mixture of fresh water from these two waterways and numerous tributaries combine with salty ocean water from San Francisco Bay to create the largest estuary on the West Coast of North America. Massive pumps at the southern end of this marsh pull approximately 5.5 million acre-feet annually of fresh water from the entanglement of waterways and sloughs southward to Central Valley farmland via the Central Valley Project and ultimately, to the southern California region via the State Water Project.
The massive Colorado River winds its way through the southwestern United States before terminating in the Gulf of California in Mexico . Along the way, the river provides water to seven states including California , with each state's water use determined by the Colorado River Compact of 1922. According to the compact, California is permitted to use 4.4 million acre-feet of the Colorado annually, but for over a decade, California has been using well beyond that. As water conditions have tightened in several of the other states, the secretary of the Interior has demanded that California reduce its use of the Colorado River - a major challenge to river water users.