Antonio de Espejo
In February 1583, Espejo arrived at the territory of the Piros, the most southerly of the Pueblo villagers. From there the Spanish continued up the Rio Grande. Espejo described the Pueblo villages as "clean and tidy". The houses were multi-storied and made of adode bricks. "They make very fine tortillas," Espejo commented, and the Pueblos also served the Spanish turkeys, beans, corns, and pumpkins. The people "did not seem to be bellicose". The southernmost Pueblos had only clubs for weapons plus a few "poor Turkish bows and poorer arrows". Further north, the Indians were better armed and more aggressive. Some of the Pueblo towns were large, Espejo described Zia as having 1,000 houses and 4,000 men and boys. In their farming, the Pueblos used irrigation "with canals and dams, built as if by Spaniards". The only Spanish influence that Espejo noted among the Pueblos was their desire for iron. They would steal any iron article they could find.
Alhambra Creek
Beginning some 8,000 years ago, Native Americans (Miwok and Costanoan), hunted, fished and gathered food in the interior rolling hills and wetlands associated with Alhambra Creek. The use of intentionally set wildland fires became a common practice to maximize the land's productivity for hunting and seed gathering. However, by the late 18th century this way of life began to fade as the first waves of Spanish settlers moved into the Bay Area. This was the beginning of 200 years of rapid change, as the entire Bay Area transformed from a sparsely populated native landscape to a highly manipulated, densely populated urbanized setting. Arroyo del Hambre (Alhambra Creek) and its tributaries lie within the boundaries of two large Mexican Land Grants that were established in the early to mid-19th century. The city of Martinez at the mouth of the watershed was part of Rancho Pinole owned by the Martinez family. A large tidal wetland at the mouth of the creek still exists today although it is significantly reduced in size. The city was founded in 1849 on along the creek's floodplain and it has experienced numerous mild to severe seasonal flooding events ever since. Further up the watershed, the Briones family owned the Briones Valley Rancho (1852 land grant) a portion of which in modern times became the Briones Regional Park of . Cattle ranching was the predominant land use in the watershed during the early years of settlement followed by establishment of orchards and vineyards in the richer soils of Alhambra Valley. By 1920, an average of 150 carloads of pears, 30 cars of grapes and 20 cars of apricots and plums were sent out annually, making Alhambra Valley one of the largest commercial pear orchards of its time.