Additional Information

Field	Value
Data last updated	February 20, 2026
Metadata last updated	March 11, 2026
Created	February 20, 2026
Format	zip
License	No License Provided
Dataset description	ZIP file for South African rivers in drainage region ALL created on 2012-04-16 - 08:06:57 by the Resource Quality Services directorate of the Department of Water Affairs. This is the release of 2012-04-16 - 08:06:57 and may still contain errors and inconsistencies. The developers would welcome any feedback and corrections. (Please include river reachcodes when reporting errors.) Contact address: SilberbauerM@dwa.gov.za ----------------- The files are: WRI_500-GEO.HTM: metadata summary. WRI_500-GEO.JPG: subsidiary file required for correct display of metadata summary. SA.JPG: subsidiary file required for correct display of metadata summary. METADATA.XML: metadata generated in ESRI xml format. QAT4QAT8.TXT: lookup table for conversion from South African to USGS-style quaternary codes. (mainly of interest to ESA BASINS users). WRIALL500.AVL: legend file for ArcView 3.x - line width proportional to Strahler order. ----------------- WRIALL500.PRJ: ESRI projection definition file. WRIALL500.SHP.XML: ESRI metadata file. WRIALL500.SHP, WRIALL500.SHX, WRIALL500.DBF: ESRI shape file components. The shape file contains the South African 1:500 000 river coverage for drainage region(s) ALL, in the Cape Datum, geographical coordinates. (All editing occurred in Albers Equal Area projection for exact tolerance setting.) (The data is being kept in its original datum until a standard datum-shift to Hartebeesthoek94 or WGS84 is agreed upon, to avoid inadvertent data corruption.) The fields may include: . --------------- (1) INTERNAL FIELDS (ignore) . =============== SHAPE, FNODE_,TNODE_, LPOLY_, RPOLY_, LENGTH, TMPRIV_, TMPRIV_ID. (2) ATTRIBUTES (sequence may differ) . ========== NAME: generally, the name assigned to the reach on a topographical map - sometimes the correctness is uncertain. - ALIAS: alternate name or names for the reach, separated by \. - RIVN_ROOT: For multilingual annotation purposes (prototype): the root of the river name. - RIVN_SUFX: The qualifier of the river name, e.g. river, spruit, loop. CLASS: unreliable indicator of seasonality of river flow. The classes and allocation require review: - Dry=dry river, Perennial=perennial river, Non=non-perennial river, Unknown=not present in original coverage or not transferred from source map. PRIMARY: primary drainage region where the reach occurs. - a lower-case letter indicates a pseudo drainage region outside South Africa. ORDER: Strahler order, starting from source=1. END: S=Source, N=iNtermediate, M=Mouth, E=Endorheic. REACHCODE: 10-character reach code made up as follows: - 1 to 4: quaternary drainage region in which MOST of the river falls. (Note that USA programs such as BASINS expect eight numerical digits. The qat4qat8.txt lookup table contains the appropriate DWA to USA conversions.) - 5 to 6: arbitrary sequence number of the reaches within a quaternary drainage region. - 7 to 10: four zeroes (0000) in the 1:500 000 coverage, intended for later use at more detailed scale. SORTER: internal sorting field - always increases downstream in river network LENGTH_KM: length of reach in kilometres (not to be confused with the meaningless LENGTH field). RivEX fields: (see http://www.rivex.co.uk/) - SEGMENT : Channel identifier. - STRAHLER: Horton-Strahler order. - SHREVE: Shreve order. - US_ACCUM: Accumulated upstream metres at the lower node of each arc. - LINK_TYPE : same idea as the "END" field, above. E=Exterior, I=Interior, O=Outlet. - CATCHID: Automatically generated ID for each end node (i.e. when END='E' or 'M'). - DIST2MTH : Distance to the mouth in metres from the upper node of each arc. - MAINCHAN : Main channel identifier. - CATCHID : drainage region identifier.
Download count	4
Id	b7bb1ffe-3af8-4310-bd87-028f8894dc2d
Is data supplementary	False
Mimetype	application/zip
On same domain	True
Package id	048ba698-6055-4bdd-9de4-ecb5f898c6fb
Resource name	South African rivers
Size	6.6 MiB
State	active
Url type	upload
Zipped file	False
Name	South African rivers
Description of the data	ZIP file for South African rivers in drainage region ALL created on 2012-04-16 - 08:06:57 by the Resource Quality Services directorate of the Department of Water Affairs. This is the release of 2012-04-16 - 08:06:57 and may still contain errors and inconsistencies. The developers would welcome any feedback and corrections. (Please include river reachcodes when reporting errors.) Contact address: SilberbauerM@dwa.gov.za ----------------- The files are: WRI_500-GEO.HTM: metadata summary. WRI_500-GEO.JPG: subsidiary file required for correct display of metadata summary. SA.JPG: subsidiary file required for correct display of metadata summary. METADATA.XML: metadata generated in ESRI xml format. QAT4QAT8.TXT: lookup table for conversion from South African to USGS-style quaternary codes. (mainly of interest to ESA BASINS users). WRIALL500.AVL: legend file for ArcView 3.x - line width proportional to Strahler order. ----------------- WRIALL500.PRJ: ESRI projection definition file. WRIALL500.SHP.XML: ESRI metadata file. WRIALL500.SHP, WRIALL500.SHX, WRIALL500.DBF: ESRI shape file components. The shape file contains the South African 1:500 000 river coverage for drainage region(s) ALL, in the Cape Datum, geographical coordinates. (All editing occurred in Albers Equal Area projection for exact tolerance setting.) (The data is being kept in its original datum until a standard datum-shift to Hartebeesthoek94 or WGS84 is agreed upon, to avoid inadvertent data corruption.) The fields may include: . --------------- (1) INTERNAL FIELDS (ignore) . =============== SHAPE, FNODE_,TNODE_, LPOLY_, RPOLY_, LENGTH, TMPRIV_, TMPRIV_ID. (2) ATTRIBUTES (sequence may differ) . ========== NAME: generally, the name assigned to the reach on a topographical map - sometimes the correctness is uncertain. - ALIAS: alternate name or names for the reach, separated by \. - RIVN_ROOT: For multilingual annotation purposes (prototype): the root of the river name. - RIVN_SUFX: The qualifier of the river name, e.g. river, spruit, loop. CLASS: unreliable indicator of seasonality of river flow. The classes and allocation require review: - Dry=dry river, Perennial=perennial river, Non=non-perennial river, Unknown=not present in original coverage or not transferred from source map. PRIMARY: primary drainage region where the reach occurs. - a lower-case letter indicates a pseudo drainage region outside South Africa. ORDER: Strahler order, starting from source=1. END: S=Source, N=iNtermediate, M=Mouth, E=Endorheic. REACHCODE: 10-character reach code made up as follows: - 1 to 4: quaternary drainage region in which MOST of the river falls. (Note that USA programs such as BASINS expect eight numerical digits. The qat4qat8.txt lookup table contains the appropriate DWA to USA conversions.) - 5 to 6: arbitrary sequence number of the reaches within a quaternary drainage region. - 7 to 10: four zeroes (0000) in the 1:500 000 coverage, intended for later use at more detailed scale. SORTER: internal sorting field - always increases downstream in river network LENGTH_KM: length of reach in kilometres (not to be confused with the meaningless LENGTH field). RivEX fields: (see http://www.rivex.co.uk/) - SEGMENT : Channel identifier. - STRAHLER: Horton-Strahler order. - SHREVE: Shreve order. - US_ACCUM: Accumulated upstream metres at the lower node of each arc. - LINK_TYPE : same idea as the "END" field, above. E=Exterior, I=Interior, O=Outlet. - CATCHID: Automatically generated ID for each end node (i.e. when END='E' or 'M'). - DIST2MTH : Distance to the mouth in metres from the upper node of each arc. - MAINCHAN : Main channel identifier. - CATCHID : drainage region identifier.
Just upload zipped file and make it available as is?	False
Supplementary material?	False
Downloads	4