2018 Map of Ontario

About this map

The dense academic corridor of Claremont anchor this Inland Empire landscape, featuring the historic campuses of Scripps College, Harvey Mudd College, and Pomona College. This 2018 survey documents a highly urbanized region where the cities of Upland, Montclair, and Ontario merge into a continuous grid, intersected by major transit routes and the legacy of former rail lines like the Pacific Electric Trail. Local genealogy is well-served by numerous detailed cemetery sites, including the Pomona Cem and Mausoleum and Holy Cross Cem Pomona, alongside the smaller Palomares Cemetery. To the south, the terrain shifts near the Puente Hills and the winding course of Chino Creek, marking the boundary between Chino and Chino Hills. The map also captures the controlled water infrastructure of the area, from the San Antonio Creek Channel to the Ontario Reservoir Number 5.