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Technical paper: Flownet diagrams - the use of finite differences and a spreadsheet to determine potential heads

by B P Williams, A G Smyrell and P J Lewis

This paper was first published in GE’s June 1993 issue


A flownet diagram is frequently used to model the seepage of water through the ground and to estimate the flow of water through the ground and the pore water pressure regime. Flownets may be drawn by hand but require practice to produce acceptable results. Specialist software programs for use with desktop computers which will calculate and draw flownets do exist, but not all engineers have ready access to them. Spreadsheet programs are more generally available, and this paper sets out to show how they may be used to construct flownets.

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