by Hannah Gartner
At the beginning of the month President Obama rejected the proposal for the Keystone XL pipeline, which would have run crude oil from the Canadian Tar Sands in Alberta to the gulf coast refineries outside of Houston, TX. Over the past few years this pipeline has become a pet project for environmentalist and conservatives alike. One of the reasons that environmentalists have been so adamantly against the Keystone pipeline was its planned path through the Ogallala Aquifer.
The Ogallala Aquifer is a 174,000-square-mile reservoir which lies beneath the states of Colorado, Kansas, Oklahoma, Nebraska, New Mexico, Texas, South Dakota, and Wyoming. It supplies water to millions of people, and irrigates the fields of farmers in this region. Lying beneath the earth, it is easy to forget that it is there, yet it is so important that it was able to play a role in halting the creation of Keystone XL.
There are many ways in which one can know the world around them. With more than half of the world’s population living in cities, most see it as a man-made, concrete jungle. It is more common for someone to know every player in the world series than where their water comes from. The danger than becomes that things like endless tap water are taken for granted, always expected and not preserved.
The United States Great Plains; Source: World Wildlife Fund
The Ogallala Aquifer is just one of hundreds that lie beneath the surface of North America. The map below shows the vast extent of land carrying these underground pools in the United States alone. Aquifers are formed when rock is porous enough to let water flow through. The layer of rock and water that is formed is called the water table. Depending on the type of rock, that water will run faster or slower. This also dictates how quickly the water in an aquifer can replenish itself. Through clay this can take a very long time, while a sandstone water table may refill much quicker. This is incredibly important to think about when using an aquifer as a water source.
Aquifers in the United States; Source: USGS
It would be amazing if we were able to say that the Ogallala Aquifer is safe now that Keystone XL has been vetoed, but this is not the truth. Since the 1940’s Midwest farmers have used this water source to grow vast amounts of corn, cotton, wheat, and cattle. The current estimate is that 30 percent of the water in this aquifer is already depleted, and it is projected that this percentage will only rise over the coming years. As of yet that farmers and citizens who utilize the Ogallala Aquifer are not taking action to stem this problem.
Even if you live very far away from this particular aquifer, there is a lesson to be learned here. The Earth is plentiful, but it is not endless. It is important to understand the land and water systems were you do live though. This may mean looking beyond the surface to what is hidden underground. Take the time to do your research, become an informed citizen, and try to find the ways to interact with your land in the most appropriate ways.