Water treatment works where Blue or Green Drop measurement systems apply Information supplied by DWS; spatialized and corrected (placed) by CSIR BE. Indicates which technologies are used at each site.

The most recent dams register of DWS, dated to 2016

The National Wetlands Map III (NWM3) is a combination of NWM2 extracted from the National Land Cover 2000 dataset and the Waterbodies of the 1:50 000 of topomaps from the Chief Directorate Surveys and Mapping (CDSM). These two datasets were further categorized into natural waterbodies, artificial waterbodies, and unclassified waterbodies.

South African Ramsar wetland sites (polygons)

A subset of the Waste Water Treatment Works (WWTW_pnts_CSIR_2015_AEA)

Oxbow lakes from the DRDLR:NGI data issued in May 2016 for the purpose of indicating floodplain wetlands. These oxbow lakes are in some instances indicative of the floodplain depressions, however some artificial systems were also mapped as Lakes by DRDLR:NGI. The polygon features called 'Lakes' were extracted and converted to points. The data was used by data capturers to guide them in the typing of hydrogeomorphic units, and can also be used when modelling HGM units. Please see Van Deventer et al. (2018) for more information.

The Confidence map was compiled to identify areas where wetland extent and HGM units attained at a higher level of certainty compared to other areas. Higher levels of certainty are associated with areas that have been visited in-field by a wetland specialist(s) over multiple seasons and cycles of the hydroperiod of a wetland, and accurately represented in the dataset. This data set is part of the first version of the South African Inventory of Inland Aquatic Ecosystems (SAIIAE). The confidence map should always be read with the National Wetland Map 5 (NWM5) which was issued with the SAIIAE version 1 was generated on 2018/06/29 by Heidi van Deventer. NWM5 includes inland wetlands and estuaries, but are associated with river line data and many other data sets within the South African Inventory of Inland Aquatic Ecosystems (SAIIAE).

Thermal springs (Olivier and Jonker, 2013). A thermal springs xlsx file was obtained for the purpose of guiding wetland mapping for the National Biodiversity Assessment (NBA) 2018 project. These coordinates were converted to points.

Department of Agriculture, Forestry and Fisheries (DAFF) and Department of Environmental Affairs (DEA). 2018. Strategic Environmental Assessment for Aquaculture in South Africa: Aquaculture Facilities Database.

Created from the NLC2000 dataset and the national Wetland Probability Map to create the first National Wetland Map (NWM1) Beta version