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 bottom boundary flow.

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. NoData values are not permitted and will be clamped to zero.
• This prequel can also have multiple input frames. In this case the values will be updated linearly 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

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

API Endpoints

• Api session event editor overlay set prequel

---

Water Module

Water Module

Tutorials

Overview

Theory

Benchmarks

Group

Simulation data

Weather

Rain m • Evaporation m

Prequels

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

Elevation

Elevation model

Related

Building attributes • Hydrological features • Hydraulic structures •  Terrain attributes • Model attributes • Prequels • Results