Percent changes in peak daily streamflow volume with a 10-year return interval (50% annual chance of exceedance) for the 2080s.

These data are part of a set which includes historical conditions (1970-1999, in cubic feet/second) and the projected changes (in percent) for ten global models. Two time periods are considered: the 2040s (2030-2059) and the 2080s (2070-2099), based on a moderate greenhouse gas scenario (A1B). Historical daily streamflow for each watershed was assessed at the mouth of each river. Results for projected changes are included only for watersheds for which at least 8 out of the 10 models agree on the direction of change.

When rendered and displayed in Map Viewer (web map): Data classes and symbology by Robert Norheim, Climate Impacts Group, based on the CMIP3 projections used in the IPCC 2007 report.

Data source: Hamlet et al. 2013.