Measurement of discharge in open channels is one of the main concerns in hydraulic engineering. The structures used for this aim should be accurate, economical and easy to use. Weirs are among the oldest and most convenient hydraulic structures that have been used in both laboratory and field for flow measurement in open channels. Due to limitations of simple sharp crested weirs, recently compo...

The flow measurements have increased importance in the last decades due to shortage of water resources resulting from climate changes that request high control available needed for different uses. classical technique open channel measurement by integrating-float method was measuring locations when there were no modern devices reasons, such as cost devices. So, use techniques taken place solve p...