NATIONAL INTEGRATED WATER INFORMATION SYSTEM
What does this dashboard relate to: general description
- Information on the types or level of Reserve determined (Desktop; Rapid; Intermediate; Comprehensive) nationally
- Information on the types or level of Reserve determined (Desktop; Rapid; Intermediate; Comprehensive) locally (per quaternary catchment)
- Information on the number of Reserves determined per WMA
- Information on the number of Reserves determined nationally
- Information on the groundwater Reserve Quality Class per Quaternary
Contacts details of person/s who championed this dashboard
Mr Stanley Nzama
Telephone: 012 336 6501
What type/s of questions does the information product aim to answer:
- How many groundwater Reserves completed per WMA?
- At what level (Desktop; Rapid; Intermediate; Comprehensive) were those groundwater Reserves conducted?
- Which quaternary catchments have available (determined) groundwater reserves?
- What is the groundwater Reserve Quality Class determined per Quaternary catchment?
Data / Information discussion:
What data is used?
- Recharge volumes of groundwater provided by Head Office, Groundwater Reserve Determination (GWRD)
- Groundwater baseflow volumes provided by Head Office (GWRD)
- Ecological Water Requirements for Maintenance Low Flows (EWR_MLF) volumes provided by Head Office (GWRD)
- Groundwater Reserve volumes provided by Head Office (GWRD)
- Groundwater Quality Reserve provided by Head Office (GWRD)
How is extracted and from where?
Excel spreadsheets provided by the business unit is uploaded to N-drive. NIWIS is extracting data from the spreadsheet saved on the N-drive and then export it directly for display on the NIWIS.
How often is it extracted?
Business unit (GWRD) provides Excel spreadsheets bi-annually
Business processes related to the data
- Groundwater Tracking System (Spreadsheet)
- NGIS/ NGA/WMS
The database is updated frequently as new groundwater Reserves get approved
The algorithms / equations used to convert data into Information
Reserve Quality Class = Water Quality Reserve
Class 0 (Ideal for domestic use – complies with the standard limits of SANS 241:2011/2015)
Class I (Acceptable for domestic use – complies with the standard limits of SANS 241:2011/2015)
Class II (Tolerable for domestic use – does not comply with the standard limits of SANS 241:2011/2015)
Class III (Unacceptable for domestic use – does not comply with the standard limits of SANS 241:2011/2015)
The reserve quality class and reserve levels are shown in the picture below :
Key assumptions made
- Map Legend
- Shows quaternary catchments with Groundwater Reserve completed
- Summaries Groundwater Reserve completed nationally
- Summaries Groundwater Reserve completed per WMA and per quaternary catchment
- Shows Level of groundwater Reserve conduced in a quaternary catchment & nationally
- Shows groundwater Reserve Quality Class per quaternary catchment
Links to other sources of related information
Are there any limitations / cautions related to using this information?
Yes, please refer to the below:
Only the Dashboard champions have access rights to the spreadsheets for updating of information.
Copyright: The copyright of the data/information remains with the Department of Water and Sanitation.
This approval to use the data/information cannot be construed as a transfer of copyright.
All data is supplied free of charge and may not be sold to third parties. The use of information data
is restricted to use for academic, research or personal purposes.
Quality: All data is supplied with no
expressed or implied warranty as to its suitability for purpose, accuracy or completeness. Status:
Meanwhile data is continuously updated; the data set(s) supplied are already historical on the day of supply.
Acknowledgement: Whenever used in publications or the electronic media, the Department Water and Sanitation is to
be mentioned as the proprietor of the relevant copyright.