The Halchidhoma (Maricopa: Xalychidom Piipaa or Xalychidom Piipaash -'people who live toward the water') are an Indian tribe now living mostly on the Salt River reservation, but formerly native to the area along the lower Colorado River in California and Arizona when first contacted by Europeans. In the early nineteenth century, under pressure from their hostile Mohave and Quechan neighbors, they moved to the middle Gila River, where some merged with the Maricopa, and others went on to Salt River and maintained an independent identity.