1965 Map of Sheep Coulee

About this map

Sun Prairie Flats dominates the heart of this Phillips County landscape, representing a high, level expanse characteristic of the Missouri River Basin’s northern reaches. This 1965 survey, published just as modern land management was standardizing ranch boundaries, documents a network of intermittent drainages that define the local topography. Waterways like Sheep Coulee and The Big Flat Creek provide a blueprint of the watershed’s seasonal flow through the prairie, while Sage Creek and Box Elder Coulee mark the eastern and southern edges of the sheet. The mapping of red dashed fence lines across the terrain provides genealogists and land researchers a precise view of mid-century livestock and property divisions in this part of Montana.