saga

hydrology analysis of kilimanjaro

SAGA 6.2 was used in this project to derive channel networks and other terrain products from global elevation models obtained from NASA’s Shuttle Radar Topography Mission. Shown below are the steps taken to process the data. Zip files with tool outputs can also be found on this page.

opening data in saga

creating a mosaic using mosaicking tool and reprojecting in utm

making a hillshade from mosaic for visualization

finding sink routes in mosaic using sink drainage route dectection tool

close-up image

removing sinks from mosaic using sink removal tool

flow accumulation (top-down)

using flow accumulation to create a channel network

close-up of channel network in black

channel network overlaid on mosaic

hillshade and channel network

data source

NASA JPL. NASA Shuttle Radar Topography Mission Global 1 arc second. 2013, distributed by NASA EOSDIS Land Processes DAAC, https://doi.org/10.5067/MEaSUREs/SRTM/SRTMGL1.003

outputs (.sgrid)

SRTM tiles

mosaic projected in UTM

analytical hillshade

sink route detection

mosaic with sinks removed

flow accumulation

channel network (.sgrid and shapefile)