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Table 1 shows the number of events N and ranges with respect to the main hydraulic characteristics, cross-sectional mean velocity , flow area A and discharge Qobs. In particular, as already observed, the discharge Qobs was calculated on the basis of the point velocity measurements using the Mean-Section Method (UNI EN ISO 748 2008) at Ponte Nuovo, Santa Lucia and Pontelagoscuro cross-sections where velocity measurements were performed using a current meter; while using the Winriver II software at the Ohio, Allegheny and Monongahela cross-sections equipped with an ADCP. The cross-sectional mean velocity was obtained by dividing this discharge value by the flow area.

Table 1

Interval of main quantities observed during N flood events at river gauging stations

LocationNPeriod/Date [m/s]A [m2]Q [m3/s]
Ponte Nuovo 55 1982–2007 0.15–1.97 31.20–311.91 5.76–541.58 
Santa Lucia 19 1990–2004 0.15–2.02 11.20–91.76 1.71–185.33 
Pontelagoscuro 48 1984–1992 0.35–2.05 913.12–2,833.06 316.18–5,026.00 
Ohio 27/03/2008 0.58 2,366.51 1,362.02 
Allegheny 26/03/2008 0.79 1,577.86 1,248.00 
Monongahela 20/05/2008 0.77 1,468.05 1,134.98 
LocationNPeriod/Date [m/s]A [m2]Q [m3/s]
Ponte Nuovo 55 1982–2007 0.15–1.97 31.20–311.91 5.76–541.58 
Santa Lucia 19 1990–2004 0.15–2.02 11.20–91.76 1.71–185.33 
Pontelagoscuro 48 1984–1992 0.35–2.05 913.12–2,833.06 316.18–5,026.00 
Ohio 27/03/2008 0.58 2,366.51 1,362.02 
Allegheny 26/03/2008 0.79 1,577.86 1,248.00 
Monongahela 20/05/2008 0.77 1,468.05 1,134.98 

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