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Table 1

Description of the indices of hydrological alteration used in the study

NameDescriptionUnitRegime propertyFlow condition
Q Jan Mean annual flow January (winter) mm Magnitude, timing Average 
Q Jul Mean annual flow July (summer) mm Magnitude, timing Average 
Q95 95 exceedance percentile mm Magnitude, duration Low extreme 
Q5 5 exceedance percentile mm Magnitude, duration High extreme 
Q year Mean annual discharge mm Magnitude Average 
dHFP Duration of high flow pulses days Magnitude, duration High 
dLFP Duration of low flow pulses days Magnitude, duration Low 
nHFP Number of high flow pulses – Magnitude, frequency High 
nLFP Number of low flow pulses – Magnitude, frequency Low 
Reversals Number of reversals – Rate of change Average 
DOYx Day of year maximum discharge – Timing High extreme 
DOYn Day of year minimum discharge – Timing Low extreme 
NameDescriptionUnitRegime propertyFlow condition
Q Jan Mean annual flow January (winter) mm Magnitude, timing Average 
Q Jul Mean annual flow July (summer) mm Magnitude, timing Average 
Q95 95 exceedance percentile mm Magnitude, duration Low extreme 
Q5 5 exceedance percentile mm Magnitude, duration High extreme 
Q year Mean annual discharge mm Magnitude Average 
dHFP Duration of high flow pulses days Magnitude, duration High 
dLFP Duration of low flow pulses days Magnitude, duration Low 
nHFP Number of high flow pulses – Magnitude, frequency High 
nLFP Number of low flow pulses – Magnitude, frequency Low 
Reversals Number of reversals – Rate of change Average 
DOYx Day of year maximum discharge – Timing High extreme 
DOYn Day of year minimum discharge – Timing Low extreme 
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