20230124 12224100 FALSE 20221208 08302500 20221208 08302500 Dams 002 18.332694 32.880953 -34.751874 -22.188039 1 Geographic GCS_WGS_1984 Angular Unit: Degree (0.017453) <GeographicCoordinateSystem xsi:type='typens:GeographicCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/3.0.0'><WKT>GEOGCS[&quot;GCS_WGS_1984&quot;,DATUM[&quot;D_WGS_1984&quot;,SPHEROID[&quot;WGS_1984&quot;,6378137.0,298.257223563]],PRIMEM[&quot;Greenwich&quot;,0.0],UNIT[&quot;Degree&quot;,0.0174532925199433],AUTHORITY[&quot;EPSG&quot;,4326]]</WKT><XOrigin>-400</XOrigin><YOrigin>-400</YOrigin><XYScale>999999999.99999988</XYScale><ZOrigin>-100000</ZOrigin><ZScale>10000</ZScale><MOrigin>-100000</MOrigin><MScale>10000</MScale><XYTolerance>8.983152841195215e-09</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><LeftLongitude>-180</LeftLongitude><WKID>4326</WKID><LatestWKID>4326</LatestWKID></GeographicCoordinateSystem> 1.0 ESRI ArcCatalog 9.1.0.722 en Dams and some lakes of South Africa REQUIRED: A summary of the intentions with which the data set was developed. (May be covered in Supplemental Information below) 1994 - Digital data supplied to Department of Water Affairs 1995 - Dam polygons closed by GisLAB 1995 - Dams cleaned and named by IWQS (over-cleaned?) 1996 - Dams fixed and stations added by IWQS (Michael Silberbauer) 1996 - Extra dams & lakes added from satellite images 1999 - Extra dams added from 1:50 000 blue plate coverage - Some 1:500 000 arcs replaced by 1:50 000 arcs - Errors in station numbers fixed - TYPE field added - Z field used for metadata 2001 - November - 27 added Vaal Barrage from 1:50_000 coverage 2002 - September - 16 added Spitskop Dam from 1:50_000 coverage 2002 - October - 23 added Grassridge, Katriver, Kommandodrift Dams and Lake Arthur from 1:50_000 coverage 2002 - November - 28 improved Theewaterskloof Dam outline using 1:50_000 coverage 2003 - May - 21 improved Inanda Dam outline using 1:50_000 coverage 2003 - June - 2 added Katse outline from Rural Communities Drinking Water CD 2002 2003 - Magda Smidt checked many dams against scanned 1:50_000 maps 2004 - Michael Silberbauer checked many dams against scanned 1:50_000 maps 2005 - Michael Silberbauer added name to Corumana Dam (Mozambique) 2006 - Michael Silberbauer added name to Pequenos Libombos Dam (Mozambique) Polygons: TYPE - ISLAND, RESERVOIR, NATURAL NAME - Most current name, with best possible spelling STATION - Department of Water Affairs & Forestry hydrological code - the presence of a station number does not imply that flow or quality data exists. Arcs: Z - 500 = from 1:500 000 scanned blue plates - 255 = from 1992 wla_tvl "farm dams" Landsat TM project (DWAF HRI) - 250 = Rural Communities Drinking Water CD - 59 = rough estimate where no polygon available - 52 = rough estimate based on 1:50 000 map contours where no polygon available - 51 = heads-up trace from scanned 1:50 000 map - 50 = from 1:50 000 scanned blue plates Resource Quality Services 2004 wla500-geo wla500-geo vector digital data withheld withheld publication date 2004 In work As required 18.333328 32.881123 -22.187214 -34.751812 18.333328 32.881123 -34.751812 -22.187214 REQUIRED: Reference to a formally registered thesaurus or a similar authoritative source of theme keywords. REQUIRED: Common-use word or phrase used to describe the subject of the data set. Not yet available, use these words instead: Dams and some lakes of South Africa State Copyright State data: Copies of digital data may not be given to third parties Data compiled for internal use on water quality maps - contains errors and inaccuracies ArcInfo Coverage Resource Quality Services +27 12 808 9500 +27 12 808 0338 SilberbauerM@dwaf.gov.za
Resource Quality Services Department of Water Affairs and Forestry Private Bag X313 PRETORIA 0001
South Africa Resource Quality Services withheld Esri ArcGIS 13.0.2.36056 Dams 18.333328 32.881123 -22.187214 -34.751812 1 18.333328 32.881123 -22.187214 -34.751812 1 1 18.332694 32.880953 -22.188039 -34.751874 en FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time Michael Silberbauer Resource Quality Information, Resource Quality Services, Department of Water Affairs and Forestry Private Bag X313 Pretoria South Africa 0001 +27 (0) 12 808 9500 +27 (0) 12 808 0338 SilberbauerM@dwaf.gov.za 20060406 ISO 19115 Geographic Information - Metadata DIS_ESRI1.0 dataset Downloadable Data 3.203 3.203 002 withheld Local Area Network 3.203 ArcInfo Coverage File Geodatabase Feature Class Vector Simple FALSE 0 TRUE FALSE GCS_Clarke_1880_RGS Decimal degrees 0.000000 0.000000 D_Clarke_1880_RGS Clarke_1880_RGS 6378249.145000 293.465000 GCS_Clarke_1880_RGS EPSG 6.2(3.0.1) Dams Feature Class 0 OBJECTID OBJECTID OID 4 0 0 Internal feature number. Esri Sequential unique whole numbers that are automatically generated. Shape 0 Geometry Shape 0 0 Feature geometry. ESRI Coordinates defining the features. AREA AREA Single 4 0 0 PERIMETER PERIMETER Single 4 0 0 DAMS500G_ DAMS500G_ Double 8 0 0 DAMS500G_I DAMS500G_I Double 8 0 0 STATION STATION String 9 0 0 NAME 40 String 40 NAME 0 0 X_COORD X_COORD Single 4 0 0 Y_COORD Y_COORD Single 4 0 0 TYPE 10 10 String TYPE 0 0 ALIAS ALIAS String 40 0 0 Shape_Length Shape_Length Double 8 0 0 Length of feature in internal units. Esri Positive real numbers that are automatically generated. Shape_Area Shape_Area Double 8 0 0 Area of feature in internal units squared. Esri Positive real numbers that are automatically generated. wla500-geo.pat Feature Class 611 FID 4 12 OID 3 FID 0 0 Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Shape 0 12 Geometry 3 Shape 0 0 Feature geometry. ESRI Coordinates defining the features. AREA 4 Float 12 3 Area of feature in internal units squared. ESRI Positive real numbers that are automatically generated. PERIMETER 4 Float 12 3 Perimeter of feature in internal units. ESRI Positive real numbers that are automatically generated. WLA500-GEO# 4 Binary 5 Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. WLA500-GEO-ID 4 Binary 5 User-defined feature number. ESRI STATION 9 9 Character 3 NAME 40 40 Character 3 X-COORD 4 Float 12 3 Y-COORD 4 Float 12 3 TYPE 10 Character 10 ALIAS 40 40 Character 3 FEAT_ID 10 Integer 10 AREA_KM2 4 Float 12 3 STN 6 Character 6 PRIMARY 1 Character 1 SECONDARY 2 Character 2 STNTYPE 1 Character 1 MONPTNUM 3 Character 3 MONITYPE 1 1 Character SUBMONPT 2 2 Character 20221208 0