This powerpoint presentation begins by providing a brief overview of climate change along with projections of future changes in climate. Statistics are quoted from the IPCC Fourth Assessment Report: Climate Change 2007. The focus of the study is on the impacts of climate change on the arid western U.S., and Predicted Snow Pack Changes in the West are presented, along with information on precipitation, land surface temperatures are rising faster than SSTs; evaporation and transpiration; Possible Impacts of Climate Change on Water Supply and Demand; sea level rise; impacts on water quality; and, mitigating the effects of climate change.