2) Geolocation or ‘burning in’ of rivers

Digitized rivers from the CIA World Data Bank II are

extracted and gridded.

The elevations of grid cells that correspond to the gridded

rivers are decreased by an appropriate amount, therefore

giving an added incentive for water to follow the

digitized paths.

This process improves the location of rivers in flat areas,

as well as mountainous areas where narrow canyons may

be averaged out in the DEM.