Hydrology is the study of physical, chemical, and biological processes that occur as water interacts with the earth. In this course we will focus on the near-surface cycling of water and the physical processes that drive this motion. We will discuss the dynamics of water as it flows across the surface of the landscape, moves through channels, and passes into the shallow subsurface. Open channel flow, hydrographs, floods, and arid region water scarcity will be the focus of the first portion of the course. The bulk of the course will look at the flow of water through permeable, saturated media, heterogeneity of flow, and several equations used to describe flow dynamics in aquifers. Flow through fractured and karst systems will be discussed. Importantly, we will spend time on the methods used by scientists and engineers (and consultants!) to understand the details and timescales of groundwater flow: wells, slug tests, pump tests, and geochemistry. Contaminant transport via groundwater flow will be examined in case studies. The use of quantitative tools such as calculations, numerical modeling, and estimation will be used to better understand the dynamics of water transport on our planet.