Kim Williams, playing her first summer on the amateur circuit, shot 77 in the rain yesterday to lead sectional qualifiers for the United States Golf Association Women's Amateur at Columbia Country Club.

Williams, Angela Munno and Michelle Mackall secured the three spots for the 150-player tournament, Aug. 10-15 in Portland, Ore.

Sandra Jaskol (87) of Willingboro, N.J. and Laura Coughanour of Haymarket (92) missed qualifying. The five-woman field was thinned because some area players are competing this week in the Trans-National tournament in Denver, from which they can qualify for the Amateur.

Munno, a Maryland engineering student who plays at the university golf course, had an 83. Mackall, of Washingtonian CC, who plays for Penn State, shot 86.

Williams' round included two birdies. She knocked a seven-iron shot on the par-3 13th hole within three feet of the cup and sank the putt. Her other birdie came on the tricky part-4 17th hole, where she hit a wedge second shot two feet from the pin and tapped in.

Williams' previous best showing this summer came in the Women's District Golf Association championship, in which she lost a semifinal match at Belle Haven to Liza Abood.

Williams, a June graduate of Wootton High School who has been golfing just three years, will attend Mississippi State University on scholarship.