The flow indicated by the gauge is computed as flow at Bolzano Sud - flow of Talvera - 90m3.
90 cumecs is the *maximum* flow diverted at Colma and added back at the power station after Cardano.
If the power station is drawing less water than 90m3: the flow in this section will be more than indicated.
Please be mindful of that and be careful as in the worst case scenario the flow can be 90m3 more than shown (!)