| 2.26 THE QUALITY OF UNDERGROUND WATER |
| Data ID |
| Description: | The quality of underground water, expressed as the concentration of total dissolved solids (TDS), consisting of chemicals |
| | such as sulphates, nitrates, fluorides and various salts |
| Chapter: | 2 Physical geography |
| File name: | The quality of underground water |
| File type: | ArcView shapefile |
| Geographical area: | Namibia |
| Keywords: | water |
| | quality |
| | total dissolved solids |
| | TDS |
| | boreholes |
| | aquifers |
| Notes on data, analysis and | Based on an analysis of the groundwater database of the Ministry of Agriculture, Water and Rural Development |
| compilation: | Point data were summarised to a 5x5 km grid as follows: |
| | Average tds (total dissolved solids) equals the average tds value of all boreholes in each grid cell |
| | Maximum tds equals the highest borehole tds in each grid cell |
| Data quality and organisation |
| Positional Accuracy: | Point data with GPS co-ordinates |
| Vector/Raster: | Vector |
| Spatial reference |
| Projection: | Geographic |
| Fields |
| Field name | Field description |
| GRID_ID | Id code for each 5km2 grid cell |
| AVE_TDS | Average total dissoved solids, in mg/l |
| MAX_TDS | Maximum total dissoved solids, in mg/l |
| Source/Distribution |
| Data Source: | Department of Water Affairs |
| Contact: | Department of Water Affairs |
| Online/Offline Address: | Department of Water Affairs |
| | Ministry of Agriculture, Water & Rural Development |
| | Private Bag 13193 |
| | Windhoek |
| Distribution notes: | Unrestricted |