Oral history interview with Bob Tuck, conducted by Clark Hansen on May 29, 2000, as part of the Columbia River Dissenters Oral History Series. Tuck discusses the topic of his 1995 master’s thesis, “Impacts of Irrigation Development on Anadromous Fish in the Yakima River Basin, Washington,” which examines the reasons for the decline in salmon runs in the Yakima Basin between 1880 and 1905, as well as proposals for permanent drawdowns and dam removals in the Columbia River Basin.