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Description

The Stellenbosch University Digital Elevation Model (SUDEM) is a 5 m resolution digital elevation model (DEM) – a database of height above mean sea level records – representing the topography of the earth’s surface.  The 5 m SUDEM, branded as SUDEM5, is currently the second highest resolution DEM covering South Africa (the highest resolution DEM is the DEMSA2).  It was interpolated from large scale (1:10 000 and 1:50 000) contours and spot height data, producing the so-called “Level 1 product”.  The Level 1 product was used to fill the voids in the 30m Shuttle Radar Topographic Mission (SRTM) DEM, after which the two DEMs were fused using a patented weighting scheme that favours the SRTM DEM in areas of moderate terrain (i.e. where contour and spot heights densities are low).  This resulted in a DEM that maximises accuracy.

A higher resolution (2m) DEM, the DEMSA2, was subsequently developed using more advanced technologies.
GeoSmart is responsible for the distribution of SUDEM5 and oversees its continual improvement.

Use-Cases

GeoSmart has also used SUDEM5 in several products, including the Flood Hazard Index and the DEMSA2.

Product Specification

Resolution5m
Vertical accuracy3m (90 percentile) and 2m mean absolute error
Horizontal accuracy10-30m (depending on area)
FormatTIF, IMG, or Geodatabase
Current coverageSouth Africa
CDEM Products
CDEM Products
GS Art Head Comp DEM Products
Sudem5 Helshoogte Clipped
CDEM ProductsGS Art Head Comp DEM ProductsSudem5 Helshoogte Clipped

National Coverage

Promo Sudem24.1 Wd

Pricing

Order sizePrice/unit
Per square km (R1300 processing fee is added for orders less than 400 km2)R25.00
Per 1:50 000 map sheet (e.g. 3318dd)R7,500.00
Per quarter degree square (e.g. 3318d)R18,750.00
NationalR1,000,000.00
ProvincePrice
Eastern CapeR210,000.00
Free StateR180,000.00
GautengR35,000.00
KwaZulu-NatalR140,000.00
LimpopoR175,000.00
MpumalangaR115,000.00
North WestR155,000.00
Northern CapeR410,000.00
Western CapeR180,000.00

*Note that 15% VAT will be added to the cost for South Africa based clients.
*R500 processing fee will be added if contours are requested.

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Product Cart

AOI Name Product AOI Area Price per km² Processing Fee Total Price (excl VAT) Total Price (incl VAT)
The cost estimator is merely an indicator of cost and is by no means binding.
For large orders (>5 000 km2), please contact us directly as such orders are often heavily discounted.
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