1914 Map of Union Island

About this map

Union Island is depicted here as an intricate network of waterways and reclaimed agricultural lands within the San Joaquin Delta. This survey, authorized during the administration of Governor Hiram W. Johnson, highlights the extensive engineering required to manage the region's hydrology through features like the Grant Line Canal and the Fabian and Bell Canal. The landscape is defined by the winding paths of the Old River and Middle River, alongside seasonal or tidal channels such as Salmon Slough and Paradise Cut.