Hydrology Posted April 16, 2020 Report Share Posted April 16, 2020 I am setting a drain with a specific elevation in a MODFLOW run, but the final gw elevation for the cell that the drain is located in, is not the same as the elevation that I set for the drain. It seems to vary depending on the hydraulic conductivity that I set for the layer that the drain is in. For low layer conductivities, the final drain elevation in the cell is close to the elevation that i specified for the drain, but for higher layer conductivities, the gw elevation in the cell can be several feet higher than the specified drain elevation. How can I get the drain to force the elevation in the cell to what I specify? Quote Link to comment Share on other sites More sharing options...
Rob Virtue Posted April 16, 2020 Report Share Posted April 16, 2020 What conductance value are you using for the drain and what are the Kh & Kv of the high conductivity layers? A higher drain conductance is required to fully drain a higher conductivity layer. Quote Link to comment Share on other sites More sharing options...
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