This table reports volume magnetic susceptibility (SI) measured along a 1 m sediment core from Purghagoolah (Lake Elusive), a lake of approximately 40 ha and 21 m depth in Croajingolong National Park, Gippsland, southeastern Australia, on Gunaikurnai Country (37°44'50"S, 149°27'9"E; decimal -37.747222, 149.452500, WGS84; 50 m a.s.l.), cored on 9 February 2021 with a Universal Corer (Aquatic Instruments). Measurements were made at 0.5 cm intervals using a Bartington ring sensor with a 75 mm aperture. Values are reported by depth and modelled age (approximately 844 to 2021 CE) and are used as a proxy for catchment soil erosion and minerogenic sediment input, with higher values indicating greater input of eroded mineral material.