Header
DATA MANAGEMENT
    SEARCH
22-May-2009 9:59 AM   
left menu
Groundwater Home
Groundwater Offices
alt Data Management
alt
alt National Groundwater Information System
alt
Groundwater Resource Assessment and Monitoring
alt
International Projects
 NORAD
alt
alt Documents
alt
alt Forms
alt Information Products
alt Glossary
alt
alt Contacts
alt
alt Links
alt
bullet

Data Management

Attribute Data

Attribute Data is presently managed by using the following systems:

OPEN-NGDB

The National Groundwater Database (Open-NGDB) is presently populated with in excess of 244 700 geosite records across the country, only point data. 

The spatial distribution of borehole records is also available.

Basic data can be obtained via the Georequest Service at georequests@dwaf.gov.za.

NGA

The National Groundwater Archive (NGA) is currently being developed and is a web-based system capturing all relevant groundwater related data. It will replace the Open-NGDB system.

WMS

The Water Management System (WMS) contains over 52 538 analyses of groundwater samples, mostly of macro elements. Data from the National Groundwater Quality Monitoring Programme (NGwQMP) is included.

HYDSTRA

This application contains surface, groundwater and rainfall data.  Data from the National Groundwater Level Monitoring Network is included.

GEOSITE NUMBERING

The need to collect and capture as much groundwater-related data as possible is indisputable. The most important mechanism in controlling this development and management of groundwater is deemed the numbering of all geosites. Each Region was allowed to choose a unique numbering system. To obtain numbers contact the relevant Geosite Number Allocator.

Spatial Data

Spatial Data is generally available in GIS format – coverages or shapefiles. Groundwater related spatial data that are available are for example

  • Hydrogeological mapping series 1:500 000 data – groundwater occurrence, groundwater quality, borehole density distribution, elevation and rainfall
  • Hydrogeological regions
  • Harvest potential
  • DWA Datasets.
  • Groundwater Metadata.

Queries can be sent to Georequest Service at georequests@dwaf.gov.za.

[top]
This site is best viewed using 800 x 600 resolution with Internet Explorer 4.5, Netscape Communicator 4.5, Mozilla 1.x or higher