The HSE program encompasses a diverse array of research topics that span all components of the hydrologic cycle including characterizing variability across space, time, and scale and studying interactions with Earth and human systems. Research projects range from fundamental studies on the physics of hydrologic processes to applied research that has direct applications in engineering practice and other fields. Projects can involve field work, laboratory analysis, use of proximal, drone, and satellite remote sensing techniques, application of machine learning and other data science methods, computational simulations, and webtool development.