A Crump weir is a standard design weir for moderate flow rates.
Note: When the downstream level of water in the river should be taken into account for backwater correction, use the crumpWeirBackwater transformation instead of the crumpWeir transformation.
Input
- headLevel: is the upstream level of water in the river measured from the top of the crest.
- type: type can be 'simple' or 'crest_tapping'. With 'crest_tapping' the pressure tapping measurements are taken and used for the flow calculation.
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