ABSTRACT:

This resource is a web link. We have developed a set of interactive java applets to illustrate solutions to common problems in solute transport and groundwater flow. Cases include: (a) Diffusion + first-order reaction in spherical particles; (b) Non-reactive and reactive solute transport with 1D, 2D, and 3D dispersion (e.g. Ogata-Bank and Domencio solutions) (c) 1D transport with mass-transfer sorption and first-order decay; (d) 1D transport with chain decay reactions; (e) 2D steady flow and particle tracking in homogeneous or random permeability fields.

There is also a neat java applet for pump test analysis using type-curve fitting for non-leaky and leaky aquifers. External pump test data can be uploaded and displayed on a log-log plot, the user can then use arrow buttons to move type-curves (Theis, Walton-Hantush-Jacob) to fit to the data.

ABSTRACT:

This resource contains web links and related publications. A simple numerical model of groundwater flow (using MODFLOW) is set up as a web application. Users can interact with the model through a web browser and can study how groundwater pumping affects streamflow and wetlands. Further information is at: Hu, Y., Valocchi, A.J., Lindgren, S.A., Ramos, E.A. and Byrd, R.A. (2015), Groundwater Modeling with MODFLOW as a Web Application. Groundwater, 53: 834-835. doi:10.1111/gwat.12372

The model can be used in high-school earth science curricula and by the general public. Teacher lesson plans are available through NAGT -National Association of Geoscience Teachers. See: https://nagt.org/nagt/teaching_resources/teachingmaterials/159251.html