Garret’s diagram used for the design of irrigation channels contains
1
Discharge plotted on the X-axis, slope on the primary Y-axis while water depth in the channel & critical velocity V0 on the secondary Y-axis
2
Discharge plotted on the X-axis, critical velocity V0 on the primary Y-axis while water depth in the channel & slope on the secondary Y-axis
3
Water depth plotted on the X-axis, slope on the primary Y-axis while Discharge in the channel & critical velocity V0 on the secondary Y-axis
4
Water depth plotted on the X-axis, critical velocity V0 on the primary Y-axis while Discharge in the channel & slope on the secondary Y-axis