The obituary Sept. 25 of topographic engineer Rupert B. Southard should have said his wife, the former Jean Scott, died in March. (Published 09/26/99)

Rupert B. Southard, 76, a topographic engineer who served in the U.S. Geological Survey for 37 years before retiring in 1986 as its national mapping division chief, died Sept. 23 at Inova Fairfax Hospital. He had a kidney ailment.

Mr. Southard joined the Geological Survey in 1949 and came to the Washington area in 1955. Over the years, he worked on the development and application of orthophotographic techniques and remote sensing. He was named national mapping division chief in 1978.

In the 1970s, he received the Interior Department's Meritorious Service Award and its Distinguished Service Award. As a result of work he did on the International Scientific Committee on Antarctic Research, a mountain in Antarctica was named in his honor. Southard Promontory also was named in his honor for this work.

From 1957 to 1968, he had taught photogrammetry at the Department of Agriculture Graduate School.

Mr. Southard, who had lived in Fairfax since 1955, was a Vermont native. He served with the Marine Corps in the Mediterranean during World War II and in Korea during the Korean War.

He was a 1949 civil engineering graduate of Syracuse University.

He was a founding member of St. Leo's Catholic Church in Fairfax and an early director of the church's music program.

Mr. Southard also had been musically active in local choral groups and musical productions, including work with the Fairfax Players, the New Loudoun Singers and "Pick and Hammer" for the USGS.

Survivors include his wife, the former Jean Scott, whom he married in 1945 and who lives in Fairfax; six children, John Southard of Gros-Umstadt, Germany, Kathleen Barnes of Richmond, Timothy Southard of Fredericksburg, Matthew Southard of Leesburg, and Ann Harwell and Joseph Southard, both of Fairfax; and seven grandchildren.