trends in northern Asia, northern Europe, and northern and eastern North America . Significant spatial heterogeneity is also found in streamflow changes at the regional scale. Significant declines occurred at 11% of stations and significant increases at 4% of stations, with most decreases occurring in southern Canada . An increasing trend  is found in the northern region, mainly due to climate warming. Mixed trends are found in other regions.
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report