Useful groundwater resources includes reports, graphics, and videos that were not produced by GSI team members but where the authors have asked GSI to post their materials or the materials are public domain.
Hydrogeology 101: Introduction to Groundwater Science and Engineering
Written by Neven Kresic, this is a college textbook introducing basic concepts in groundwater science and engineering with 16 lectures, the duration of a typical one or two-semester course at American universities. It covers introduction to hydrogeology, groundwater use, principles of groundwater flow, aquifers and aquitards, groundwater recharge and discharge including springs, groundwater chemistry and contamination, groundwater remediation, field investigations, and groundwater in water supply.
Colorado State Matrix Diffusion Video
This three-minute video produced by Lee Ann Doner and Dr. Tom Sale of Colorado State University shows the effect of matrix diffusion in groundwater systems.