2021 Map of Bouldin Island

About this map

The interior waterways of the California Delta are preserved here in high detail, where the San Joaquin River and South Mokelumne River wind through a complex system of islands and sloughs. This particular area marks the intersection of Sacramento, San Joaquin, and Contra Costa counties, defined by its reclaimed agricultural tracts like Bouldin Island and Venice Island. The map illustrates the specialized infrastructure of the region, from the Stockton Deep Water Channel that facilitates maritime commerce to the levee roads such as W Mandeville Levee Rd that protect these low-lying lands.