Table 1 Changes in average annual and seasonal flows observed in representative catchments over the period 2021–2050 compared with 1980–2009 (after Hänggi et al. 2011)

Runoff regime group Runoff, winter half-year Runoff, summer half-year Runoff, annual
Ice-fed regimes +20% to +30% +1% to +15% +5% to +15%
Snow-fed regimes +6% to +17% -15% to -4% -3% to +4%
Rain-fed regimes on the northern slopes of the Alps +2% to +5% -8% to -2% 0% to +5%
Regimes on the southern slopes of the Alps -5% to +16% -11% to -2% -4% to +6%