This document summarizes a project aimed at enhancing climate resiliency on reservation lands in the arid American Southwest and Great Basin. The project brings together researchers from multiple universities and tribes to study climate risks, water resources, agriculture, traditional ecological knowledge, and economic opportunities on nine reservations. Key areas of research include downscaling climate models to assess drought and water supply impacts, examining water rights and infrastructure challenges, exploring culturally appropriate agricultural adaptations, and leveraging traditional knowledge about water and land management. The overarching goals are to support tribal water and food security in the face of a changing climate through participatory research and knowledge sharing.