He made his formal entry into
Mexico City on October 26, 1603, accompanied by his wife Ana de Mendoza, and assumed the reins of government. He immediately accused his predecessor,
Gaspar de Zúñiga y Acevedo, Count of Monterrey of excessive spending and of exceeding his authority. Plans to colonize
Alta California in the wake of
Sebastián Vizcaíno's exploration were cancelled. In August 1604 there was another major inundation of Mexico City. Damage was extensive. The viceroy initially suggested moving the capital to the nearby hills of
Tacubaya, but this was deemed too expensive. Then he decided to finish the drainage canal of Huehuetoca, but this was a project requiring many years and the labor of 15,000 Indians to complete. In the meantime he repaired the dikes constructed under Viceroy
Luís de Velasco, at the same time paving the streets of San Antonio Abad, Chapultepec, San Cristóbal and Guadalupe. Nevertheless, parts of the city remained submerged for a year. Mendoza y Luna also constructed an aqueduct on stone arches that conducted water from the springs on
Chapultepec to the center of the city. He cleaned the water channels and paved many streets with cobbles. He lifted restrictions on Indians returning to their land to live. ==Later career and death==