About the website
National Water Quantity Data
The National Water Quantity (NWQ) information provided to the South African National Space
Agency (SANSA) is generated using pre-existing data modelling procedures developed and
operationalized jointly by GEOTERRAIMAGE SA (www.geoterraimage.com) and EKOSOURCE (www.ekosource.co.za)
. As such all Intellectual Property rights associated with these
algorithms, models and methods remain at all times with GEOTERRAIMAGE SA and EKOSOURCE.
User Licence & Data Access
The NWQ information is provided to SANSA on a monthly basis, covering the contractual period
from January 2016 to June 2022 inclusive.
SANSA is granted for the contractual period a non-exclusive, Multi-User License to use and
distribute the supplied monthly national surface water extent and associated dam volume
information in both spatial and non-spatial formats to all
national government departments,
provincial and municipal sub-departments, and any of their legally associated
entities.
The full set of GIS compatible, geospatial monthly water information presented in this
website can be obtained from SANSA, at the following contact:
Ms Nomnikelo Bongoza or Ms Thando Oliphant, South African National Space Agency (SANSA), Directorate: Earth Observation.
Tel +27 12 844 0500.
Fax +27 12 844 0396.
Email customers-eo@sansa.org.za.
Both SANSA and the indicated government departments (and associated legal entities) may use
this information internally, or provide access to independent 3rd parties specifically
undertaking contractual work on behalf of SANSA or any of the indicated government
departments.
Neither SANSA, the indicated government departments or any contracted 3rd party may use the
supplied information in order to develop a competitive, comparable national, monthly water
and volume modelling capability and service, either for South Africa or elsewhere
internationally.
At the end of the contractual period the supplied monthly surface water and volume data can
be retained by SANSA and the government departments and associated legal entities. All 3rd,
non-government parties provided with access to the monthly surface water and volume data
must delete all copies of the data from their computer systems and data archives, once the
contracted work has been completed. No 3rd party may retain nor use the SANSA or department
supplied data for their own use or purpose. It is the responsibility of SANSA to ensure that
these conditions are applied to by both departments and any departmentally contracted 3rd
parties.
The multi-user license does not allow public dissemination of the supplied spatial and
non-spatial data.
Additional technical information on the surface water detection and data metadata can be found at the following link:
Metadata Report - Summary
Metadata Report - Full Document
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