WASHINGTON (AP) _ St. Louis Post-Dispatch correspondent-columnist Bill Lambrecht won the 46th annual Raymond Clapper Memorial Award and Knight-Ridder Newspapers correspondent Christopher Scanlan was named winner of the Barnet Nover Memorial Award, it was announced Saturday.

The awards, which recognize excellence in reporting, were made by the Raymond Clapper Foundation and the Barnet Nover Foundation. Each award also carried a $1,500 cash prize. Second place carried a $500 prize.

The awards were to be presented at the annual White House Correspondents Association dinner Saturday night.

Lambrecht was cited for his series on the export of U.S. garbage. Scanlan was named for his series of articles on the effect of the budget crisis on government health care for veterans.

John Hall of Media General was named the second-place Clapper winner for his series on the Navy's investigation of the explosion on the battleship Iowa.

Andrew Melnykovych of the Casper Star-Tribune was named the second-place Nover winner for his series on federal oil and gas royalty audits and the nomination of James Cason to be assistant secretary of agriculture.

The Clapper winners were selected from among 33 entries submitted to a panel of current and former Washington reporters. Raymond Clapper, a Washington correspondent and columnist for Scripps Howard Newspapers, was killed in an airplane crash while covering the invasion of the Marshall Islands in World War II.

The Clapper award was established in 1944 to recognize a Washington-based newspaper writer whose work ''most clearly approximated the ideals of fair and painstaking reporting and good craftsmanship that were characteristic of Raymond Clapper.''

The Nover winners were selected from 24 entries submitted to a panel of five Washington journalists. Barnet Nover was bureau chief of the Denver Post's Washington bureau from 1947 to 1971. He also was a columnist for The Washington Post and a reporter with the Buffalo Evening News.