1986 Map of Loco Lake

About this map

Tenmile Ridge dominates this high desert landscape in Lake County, defining the eastern edge of a vast drainage basin. In the mid-1980s, this area of south-central Oregon was characterized by its ephemeral water sources and shifting terrain, including expansive fields of Sand Dunes and the prominent Alkali Flat. The central feature, Loco Lake, is surrounded by numerous Prospects, indicating historic mineral exploration in the vicinity. Vital water points for livestock or local wildlife are marked at Bailey Waterhole and South Cat Waterhole, highlighting the arid nature of the region. The map also identifies Fivemile Point to the south, where the rising terrain begins to break the level expanse of the lake bed. This document serves as a detailed record of the land use and natural topography before significant environmental or management changes in the high desert.