The Amount of Oil Spilled in the Gulf in Perspective

The AP has an article up on the resilience of the Gulf, but this stood out:

While BP’s well dumped 172 million gallons into the Gulf over three months, the muddy Mississippi brings in 198 million gallons of water — replete with urban and farm runoff — every minute. The National Research Council estimates that 41 million gallons a year of oil naturally seep into the Gulf from below.