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Small prairie lakes and ponds disappearing

After a federal report warned that "potholes," the small ponds, lakes and wetlands scattered across southwestern Minnesota, the Minnesota Department of Natural Resources is trying to determine whether they are being drained illegally to make more room for farmland. The Star Tribune published a story on this state, federal, as well as environmental issue on Sunday.

The potholes are important because they provide habitat for hundreds of species of migrating birds.