Client: Tohono O’odham Ki:Ki Association

Location: Baboquivari District, Tohono O’odham Nation, Arizona

  • 9 new homes and subdivision layout
  • Collaboration of engineers, land surveyors, tribal utility authorities, and tribal housing associations
  • Preservation of nearby cultural resources
  • Over 6 square miles of floodplain modeling
  • Complete water & wastewater system design
  • Elevated building pad design protects homes during extreme rainfall events

Project Overview: 

As part of our ongoing commitment to our tribal clients, Riley has collaborated with the Tohono O’odham Ki:Ki Association for the design and construction bidding process for a new nine-home subdivision located in the Tohono O’odham Nation’s Baboquivari District. The Ki:Ki Association works through a variety of funding sources to provide high quality housing for those who need it the most. This project was made possible through a strong collaboration of tribal housing and utility authorities, cultural specialists, experienced land surveyors, and the Riley design team. Cold Fields presented unique challenges due to its location in a large floodplain and immediately downstream of an aged culvert system that makes the location especially prone to flooding. Riley’s drainage engineers conducted a reconnaissance of the site and the watershed to develop a hydrologic model that helped minimize the height of the building pads, while ensuring the safety and integrity of each new home. This, along with our construction experience with rural developments, provided the client with a safe and cost-effective design both on time and within the budget.