(1) The term Bureau means the Bureau of Indian Affairs.

(2) The term dam has the same meaning given such term by section 467 of title 33.

(3) The term Secretary means the Secretary of the Interior.

(4) The term Indian tribe means any Indian tribe, band, nation, pueblo, or other organized group or community, including any Alaska Native village or regional corporation as defined in or established pursuant to the Alaska Native Claims Settlement Act [43 U.S.C. 1601 et seq.], which is recognized as eligible for the special programs and services provided by the United States to Indian tribes because of their status as Indians.