Obser­va­tion-based MAP OF MEAN RUNOFF

A glob­al map of mean annu­al runoff (0.04° res­o­lu­tion) based on stream­flow obser­va­tions from 1651 large catch­ments (>10,000 km²). The map can be con­sid­ered an update of the 0.5° UNH/GRDC Com­pos­ite Runoff Fields dataset,  which was based on obser­va­tions from only 663 catch­ments. The map includ­ing doc­u­men­ta­tion is avail­able here. Please cite DOI 10.5281/zenodo.44782 when using the map in any pub­li­ca­tion.

The newly derived obser­va­tion-based map of mean annual runoff.

The new­ly derived obser­­va­­tion-based map of mean annu­al runoff. Ungauged regions are indi­cat­ed in white. Click to zoom in.