IHOD (Itasca Hydrologic Observation Dataviewer) was developed by Itasca specifically for groundwater data management. IHOD is a customizable QGIS plugin that merges high-level database input/output with tools for viewing hydrogeologic and geochemical data. It interacts directly with underlying databases to retrieve data and provide the user with intuitive access to those data in graphical and tabular formats that are readily integrated into the user`s work flow.