Description based on: 1971.
Vols. for 1956/59-68 issued by the Agricultural Research Service, U.S. Dept. of Agriculture; 1969-1972 by the Science and Education Administration, Dept. of Agriculture; 1973- by the U.S. Dept. of Agriculture, Agricultural Research Service, in cooperation with state agricultural experiment stations.
Formed by the union of: Monthly precipitation and runoff for small agricultural watersheds in the United States; Annual maximum flows from small agricultural watersheds in the United States; and, Selected runoff events for small agricultural watersheds in the United States.