lit a candle 1h agoMy brother called me with this, middle of the night here. 96 years old. Spent his whole career proving Kariba hurt the Tonga more than it helped. That kind of honesty takes guts.
Their story
Thayer "Ted" Scudder was an American social anthropologist whose six decades of fieldwork made him one of the world's leading authorities on what large dams do to the people who live in their path. For most of the second half of the 20th century he was Caltech's only professor of…
Thayer "Ted" Scudder was an American social anthropologist whose six decades of fieldwork made him one of the world's leading authorities on what large dams do to the people who live in their path. For most of the second half of the 20th century he was Caltech's only professor of anthropology, and his long study of the Gwembe Tonga of Zambia, begun with Elizabeth Colson in 1956, became one of the longest continuous studies of a single society in the history of the discipline. He died on October 22, 2026, at the age of 96.
Scudder was born on August 4, 1930, in New Haven, Connecticut, and grew up in Swarthmore, Pennsylvania, where his father, Townsend Scudder, taught English at Swarthmore College. At Phillips Exeter Academy he captained the cross-country team and founded the school's mountaineering club. By his own account an average student, he got into Harvard largely on the strength of his outdoor pursuits, and there he followed his two great passions, mountaineering and ornithology. In 1952 he led a Harvard Mountaineering Club expedition to the Alaska Range that made first ascents of several peaks near what was then called Mount McKinley. He graduated from Harvard that year and in 1950 had married Mary Eliza Drinker.
Hoping for a life in the mountains, he first tested cold weather clothing and equipment for the Army Quartermaster Corps. When a planned job with the Arctic Institute of North America fell through, family pressure steered him to Yale Divinity School, where an interest in African religions led him to anthropology. He returned to Harvard in 1954 for a PhD, took courses at Boston University, and there met Elizabeth Colson, who became his lifelong collaborator. In 1956 he joined her in the Middle Zambezi Valley of Northern Rhodesia, now Zambia, to study the Gwembe Tonga, some 57,000 people about to be moved to make way for the Kariba Dam and its reservoir, Lake Kariba.
That fieldwork set the course of the rest of his life. He finished his doctorate in 1960, spent a postdoctoral year at the London School of Economics, taught briefly at the American University in Cairo, and studied Nubian communities about to be displaced by the Aswan High Dam. In 1964 he joined Caltech, where he helped turn what was then the Division of Humanities into a research division, renamed the Division of the Humanities and Social Sciences in 1966. He taught there until taking emeritus status in 2000 and won Caltech's student ASCIT teaching award three times, the first person to do so.
Scudder kept going back to the Gwembe Tonga for decades. By the mid 1970s he had concluded that the Kariba Dam had deepened poverty and caused lasting harm for the resettled communities. From that long view he and Colson built a model of how forced resettlement unfolds, published in 1982, that became a benchmark for the field. Once a strong believer in big water infrastructure, he became one of its most informed critics, arguing that the true costs to people and rivers were consistently underestimated. In 1976 he co-founded the Institute for Development Anthropology, and he advised the World Bank, the United Nations and governments on dam and resettlement projects in Africa, Asia and the United States, including a study of Navajo relocation.
In the 1990s his research helped persuade the government of Botswana to halt a dam scheme that threatened the Okavango Delta, later a UNESCO World Heritage Site. From 1998 to 2000 he served as a commissioner on the World Commission on Dams, which set international standards for planning large dams. His later books, The Future of Large Dams (2005) and Global Threats, Global Futures (2010), brought his findings to a wider readership, and author Jacques Leslie devoted a third of his book Deep Water to him.
Scudder was a Guggenheim Fellow, a fellow of the American Association for the Advancement of Science, the first recipient of the American Anthropological Association's Solon T. Kimball Award, winner of the Edward J. Lehman Award, the first recipient of the Royal Anthropological Institute's Lucy Mair Medal, and the 1999 Bronislaw Malinowski Award honoree of the Society for Applied Anthropology. In 2021 he and his wife endowed the Eliza and Thayer Scudder Professorship in the Social Sciences at Caltech.
He was predeceased by his wife Eliza and his daughter Eliza "Lydee" Scudder, and is survived by his daughter Alice Thayer Scudder and three grandchildren. Caltech announced his death on October 28, 2026; the cause and place of death were not made public.
Biography adapted from Caltech obituary (Oct 28, 2026), Caltech HSS profile, Society for Applied Anthropology, Wikipedia (CC BY-SA 4.0). Wikipedia ↗
In their own words
“If you study [large dams] over an extended period of time ... you find out how destructive they are.”
Interview with The Exeter Bulletin, 2020, as quoted by Caltech
“Look at this place. I get to be a monk. No interruptions! I can be creative with the students and just hunker down on my research with complete freedom.”
On Caltech, as recalled by colleague Jean Ensminger, 2026
“just sort of playing around with a whole range of things”
On his undergraduate studies at Harvard, Caltech Archives oral history, 2000 to 2001
Photos
1Thayer "Ted" Scudder
by People Forever
From social media
2Posts by Thayer, and posts about them, kept here so they are not lost.