Our aquifers are draining faster than they can be replenished, and the biggest, Ogallala, which stretches from South Dakota to Texas, has seen localized drops in the water table of 150 feet.

• 我们的地下水使用比注入得更快并且更多，从南达科他州延伸到德克萨斯州的奥加拉拉的水量下降到150英尺。