Bottom resistance prequel (Water Overlay)

Name	Prequel	Underlying data	Unit	Range	No data	Description
Bottom Resistance	BOTTOM_RESISTANCE	Water Prequel	days	0 to 1000000	Clamped to range	A grid of values containing the resistance of the lower layer against the seepage.

Notes

• The unit is: the number of days it would take to equalize 1 meter of the local groundwater table level with the higher region's water head. (days)
• The values in this prequel grid are clamped between 0 and 1000000. No data values are therefore not allowed, but could be clamped to zero when negative leading to the same result.
• This prequel can also have multiple input frames. In this case the values will be updated linear throughout the simulation period. For example 5 input frames over a 10 day simulation period result in a new value every two days.
• Note: Input frames are not linked to the overlay's output timeframes.

See also

• Underground seepage formula (Water Overlay)
• Ground bottom pressure m (Water Overlay)
• Ground bottom flow result type (Water Overlay)
• Underground model (Water Overlay)

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Water Module

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Bottom distance • Bottom pressure • Bottom resistance • Ground conductivity • Groundwater datum • Groundwater depth • Manning • Max infiltration • Microrelief • Surface level • Surface u • Surface v • Terrain elevation • Unsaturated fraction

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