Lacy Streeter, the man to whom Mayor Walter E. Washington turned to replace indicted general assistant Joseph P. Yeldell seven weeks ago, was chosen yesterday to run Washington's reelection campaign this fall.

Streeter, 42, a former city housing coordinator who became acting general assistant April 7, the day after Yeldell was placed on leave following his indictment on charges of conspiracy and bribery. Streeter submitted his immediate resignation from the general assistant's post to the mayor yesterday.

Yesterday, Streeter said he was "thrilled" by his choice to direct the campaign, and said it represented a "logical progression" from the previous positions he has held in city government over the past six years.

As general assistant, Streeter directed a staff of more than 30 persons, whose principal responsibilities included many politically sensitive areas such as overseeing the allotment of city contracts to minority businessmen, coordinating the mayor's meetings with community groups and advisory neighborhood commissions and making recommendations on appointments to city boards and commissions.

Yeldell, a longtime political benefactor of the mayor, used the position to enhance the mayor's visibility in the community, and was believed by many to be virtually running an unofficial campaign from the general assistant's office.

Streeter said yesterday, however, that as campaign director "I will not permit, will not tolerate, the involvement of any government employee in this campaign that is violative of the law." The Hatch Act prohibits the involvement of city employes in partisan political activity.

Streeter was not on the mayor's 1974 campaign staff, which was directed by John Dean. Before becoming general assistant, Streeter was an area director for the city's department of Housing and Community Development in charge of helping to rebuild the 14th Street riot corridor and liaison activities with various community groups.

"As we neared a point where the mayor was interested in seeking reelection," Streeter said yesterday, "I indicated that I was ready to serve in whatever capacity I can render the best service to him and the community.