 The meridian meets its corresponding baseline at the point of origin, or initial point, for the land survey.For example, the Mount Diablo Meridian, used for surveys in California and Nevada, runs north-south through the summit of Mount Diablo.Often, meridians are marked with roads, such as the Meridian Avenue in San Jose, California, Meridian Road in Vacaville, California, both on the Mount Diablo Meridian, Meridian Road in Wichita, Kansas on the Sixth Principal Meridian, and Meridian Avenue in several western Washington counties generally following the Willamette Meridian.