Klamath Riverkeeper Regina Chichizola shows what water from ...

Fri May 2, 1:35 PM ET

Klamath Riverkeeper Regina Chichizola shows what water from the Klamath River looks like, at a news conference in Omaha, Neb., Friday, May 2, 2008. Representatives from tribes along the Klamath River have come to Omaha to plead with Warren Buffett during the annual Berkshire Hathaway shareholders meeting for the removal of a dam on the Klamath River. The dam is operated by PacifiCorp, which is owned by Mid American Energy, a subsidiary of Berkshire Hathaway.

(AP Photo/Nati Harnik)