Category Groundwater modelling
Publisher  International Ground Water Modeling Center 
Platform DOS
Status Public domain
Description TETRA is a simple interactive utility to calculate velocity components in 3D from hydraulic head data. Groups of four observation points are connected to form tetrahedrons, and a linear interpolation is used to calculate head gradients for each tetrahedron. Application of Darcy's Law then yields velocity components. The program supports confined/unconfined anisotropic, homogeneous aquifers. Menu-driven,
Cost US Dollars 50
Data formats supported None stated
Supplier in United States of America  International Ground Water Modeling Center 

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