In each field visit, manual reads of the limnimetric scale located at
the weir were taken and were used to calibrate the instrument flow
recordings. Discharge (Di, in L) was calculated for
successive small steps tracking the variation of the hydrographs (Fig.
2).
Di =
qi*(ti+1-ti) +
[(qi+1-q i)*(ti+1-ti)/2],
being qi the instantaneous stream flow (in L/s at TM9
and in m3/s at TM0) and qi+1 , the stream flow for the
next reading.