Groundwater Affects the Geomorphic and Hydrologic Properties of Coevolved Landscapes Journal of Geophysical Research: Earth Surface

The hydrologic dynamics and geomorphic evolution of watersheds are intimately coupled— runoff generation and water storage are controlled by topography and properties of the surface and subsurface, while also affecting the evolution of those properties over geologic time. However, the large disparity between their timescales has made it difficult to examine interdependent controls on emergent hydrogeomorphic properties, such as hillslope length, drainage density, and extent of surface saturation. In this study, we develop a new model coupling hydrology and landscape evolution to explore how runoff generation affects long-term catchment evolution, and analyze numerical results using a nondimensional scaling framework. We focus