The Hopi spelling is "Homol'ovi." There are four separate settlements here, all within a few miles of each other along the floodplain of the Little Colorado River northeast of what is now Winslow, Arizona. With a bit of irrigation the location would have been excellent for growing maize, squash and beans, the staple foods of their diet back then. The river valley was also lush enough to support a good population of wild game.
Archaeologists figure the settlement known as Homol'ovi I was begun by migrants coming from the south, from Hohokam and Mesoamerican sources migrating north and discovering the empty floodplain next to the Little Colorado. Their knowledge of irrigation made living in the area relatively easy for a couple hundred years.
The beginnings of Homolovi II, III and IV date to about 1100 CE, to the migrations out of Sinagua areas to the northwest, the countryside of Wupatki and Wukoki. That migration was triggered by the eruption of Sunset Crater. A hundred years later some of them returned north.
Then came an influx of people from the Betatakin and Keet Seel region as those areas were being abandoned in the late 1200's CE. There was a distinct change in the forms and decorations of pottery at that time.
By the late 1300's, the pueblos of Homol'ovi were all abandoned, most of the people having relocated to the Hopi mesas or to Zuni.