DWS Water Resource Monitoring Sites: Google Earth KML Spatial Inventory

This dataset comprised a national spatial inventory of South African water resource monitoring sites made available through Google Earth using Keyhole Markup Language (KML). The inventory was developed by the Department of Water Affairs and Forestry to improve access to, and understanding of, the extent and structure of long‑standing national surface water and groundwater monitoring programmes.

The dataset provided geographic locations for several thousand monitoring sites distributed across South Africa, including surface water quality stations, groundwater monitoring boreholes, flow gauging stations, dam level monitoring sites, and related water resource observation points. Monitoring sites were organised hierarchically within the KML structure according to hydrological or management regions, including primary drainage regions and Water Management Areas, as well as by site type.

Each monitoring site was associated with embedded metadata accessible via Google Earth popup balloons. This metadata included site identifiers, descriptive locality information, monitoring type, number of samples collected, and the operational period of the site. Where available, hyperlinks provided access to pre‑generated time‑series graphs, downloadable flat data files, flow records, and Maucha ionic diagrams illustrating major ion composition and salinity. TimeSpan tags enabled visualisation of monitoring activity for selected periods using the Google Earth time slider. The spatial inventory was published as a publicly accessible static web resource and was updated periodically using exports from the national Water Management System (WMS). The dataset supported rapid visualisation from national to local scale, assisted users in identifying available monitoring data, and preserved institutional knowledge of the monitoring network as corporate memory diminished.