A stage-discharge relationship is an inexpensive tool forobtaining continuous records of river discharge. Using sketches,describe what you understand by a stage-discharge relationship andhow it fills the role of a cheap alternative for continuous riverflow measurement. What precautions must be taken in the long-termuse of stage-discharge relationships?
(c) Describe the dilution gauging method, emphasising the maindifferences between constant rate injection and gulp injectiontechniques. Starting from the basic mass balance equation, derivethe equation for estimating river discharge using the constant rateinjection method. What precautions must be taken when using thedilution gauging method?
