This document summarizes a research project on the impacts of climate change on monthly runoff. The objectives are to define climate change and runoff, identify the chemistry involved in evaluating impacts, and discuss effects on monthly runoff. Climate change is causing shifts in temperature and precipitation patterns that influence runoff. Higher temperatures lead to increased snowmelt and heavy rainfall, elevating surface runoff. Changes in runoff chemistry can concentrate ions like calcium over time. The research concludes that climate change affects monthly runoff levels in various ways, but consistently causes higher temperatures worldwide.