SANBI Metadata
MBSP ESA Strategic Water Source Areas
These are the high rainfall receiving and water provisioning areas within Mpumalanga. These areas provides 50% of Mpumalanga's runoff in only 10.2% of surface area. These areas are recognised as critically important ecological infrastructure areas within south Africa. This information dataset was obtained from Dr Jeannne Nel of the CSIR. See Nel, J., Colvin, C., Le Maitre, D., Smith, J. & Haines, I. (2013). South Africa’s Strategic Water Source Areas. CSIR Report No:
CSIR/NRE/ECOS/ER/2013/0031/A. Report for WWF South Africa. The analysis was run for Mpumalanga to identify the most important water source areas. The cut-off value used was the area of Mpumalanga that produced the 50% of the runoff in the smallest area. These areas are really important and should be managed for ensuring good quality and quantity of water. The Strategic Water Source Areas were then included within the MBSP Freshwater Assessment as Ecological Support Areas (ESA): Strategic Water Source Areas. The land-use guidelines for this category is included within the MBSP Handbook.
Simple
- Date (Publication)
- 2014
- Edition
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1.0
- Purpose
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- Status
- On going
- Maintenance and update frequency
- As needed
- Theme
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TODO: please enter keyword(s) by using the '+' button below
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- Place
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South Africa
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Mpumalanga
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- Access constraints
- Copyright
- Use constraints
- otherRestictions
- Other constraints
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TODO: please complete per data partner / dataset
- Spatial representation type
- Vector
- Denominator
- 50000
- Language
- English
- Character set
- UTF8
- Topic category
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- Environment
- Begin date
- 2016-01-01
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- Reference system identifier
- WGS 1984
Distributor
- OnLine resource
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A list of services published are available at this URL.
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WWW:LINK-1.0-http--link
)
BGIS Map Services
- OnLine resource
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A list of spatial data-sets are available at this URL.
(
WWW:LINK-1.0-http--related
)
BGIS Spatial Datasets
- Hierarchy level
- Dataset
- Statement
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Methodology:
The map of strategic water source areas was developed by the CSIR using mean annualm precipitation data at a 1 x 1 minute resolution for the entire country. This was converted into mean annual runoff using a set of generalised rainfall-runoff relationships (see ProEcoServe 2013 for details relating to the generation of this dataset). The disaggregated data were summarized to a quaternary catchment scale so that it could be compared to the quaternary catchment mean annual runoff, and the results were favourable. These were the data that underpinned the identification of NFEPA’s “high water yield areas”. There were a few faults in this dataset which resulted in the need to apply an adjustment factor to the 1 x 1 minute data so that the mean annual runoff matched the WR2005 data at each quaternary outlet. This essentially means that the rainfall-runoff curves were used to disaggregate to WR2005 mean annual runoff to a 1 x 1 minute resolution.
The dataset for Mpumalanga was re-sampled using a 90m grid (for display purposes only – resolution remain accurate at the 1 x 1 minute resolution).
Available documentation: See these two documents.
Lötter, M.C. 2014. Technical Report for the Mpumalanga Biodiversity Sector Plan – MBSP. Mpumalanga Tourism & Parks Agency, Mbombela.
ProEcoServe, 2013. Task 1.1.1: Spatial mapping of ecosystem services. ProEcoServ-South Africa
- File identifier
- 1c1e68d7-ab2d-461b-ae05-b596b1f3dc19 XML
- Metadata language
- English
- Character set
- UTF8
- Date stamp
- 2018-10-01T16:38:37
- Metadata standard name
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SANS 1878
- Metadata standard version
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FGDC-STD-001-1998
Overviews
Spatial extent
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