44171c12-0ad8-4eda-93eb-227a86a9bb0c SANBI The Metadata Manager +27 21 799 8738 Kirstenbosch Research Centre Cape Town Claremont 7735 South Africa bgishelp@sanbi.org.za 2017-05-29T11:53:32 SANS 1878 FGDC-STD-001-1998 WGS 1984 FSP: Rivers Matzikama 2007 2007 1.0 = Used as the rivers base data layer in the Saldanha/Sandveld systematic conservation assessment of freshwater biodiversity Kerry Te Roller / Sediqa Khatieb CapeNature The GIS Officer 021 799 8731 / 8738 Kirstenbosch Research Center, Rhodes Drive, Newlands Cape Town 7700 South Africa bgishelp@sanbi.org.za Matzikama Rivers rivers Matzikama South Africa Western Cape No Copyright 50000 environment 2016-01-01 18.082968749999996 19.096328125 -32.00380831799959 -31.196579336740584 SANBI bgishelp@sanbi.org.za ZIP 1 http://bgis.sanbi.org/SpatialDataset/Detail/279 WWW:LINK-1.0-http--related A list of spatial data-sets are available at this URL. BGIS Spatial Datasets Methodology: The GIS layer of origin is the 1:500 000 rivers data layer that DWAF has coded for geomorphological zonations. CSIR subsequently used this layer to add information used to type rivers. During the process of geomorphic zonation, data attached to the 1:500 000 rivers were lost (e.g. reachcode and river names). To attach these data to the subsequent rivers with geomorphic zonations, we performed a series of grid overlays using a 100 m resolution pixel. This has created slight inaccuracies in river type and reachcode information at river confluences of no more than 100 m. Where these inaccuracies created new river types, the inaccurancies were corrected, but the majority of discrepancies were not changed. Thus, 0-100m segments of rivers may have the incorrect river type at confluences. For example, a non-perenial tributary flowing into a perennial mainstem may be coded as perennial just at its confluence. The approach and methods for typing and integrity are described in detail in the CAPE Saldanha/Sandveld freshwater report. Available documentation: CAPE Saldanha/Sandveld freshwater report