1910 Map of Headreach

About this map

Terminous sits at the northern edge of this labyrinthine waterway network, serving as a primary point of human activity in the heart of the Delta. This landscape is defined by its intricate system of sloughs and reaches that carve through massive low-lying tracts like Roberts Island, Bouldin Island, and Staten Island. The San Joaquin River snakes through the territory, its course modified by man-made improvements such as the Headreach Cutoff and the anchorage at Headreach Landing. The winding paths of Disappointment Slough and White Slough illustrate the complex drainage patterns required to manage these island reclamation projects. Many of these waterways, including Deadman Reach and Fourteenmile Slough, reflect the navigational challenges and specific nomenclature used by early twentieth-century river pilots and farmers before further modern levee developments altered the region.