View/Open - University of Zululand Institutional Repository
View/Open - University of Zululand Institutional Repository View/Open - University of Zululand Institutional Repository
99 of dams in NatallKwaZulu can also be found in Noble, R.G. and Hemens, J., 1978. Inland water ecosystems in South Africa - a review of research needs, South African National Scientific Programmes Report No. 34, Cooperative Scientific Programmes, CSIR,. Pretoria, 150 p. The (zero) sediment accumulation as a percentage of full capacity data in the above table, do not necessarily reflect the current situation in certain dams. Some updated sediment data are provided in Rooseboom, A., 1992. Sediment transport in rivers and reservoirs: a southern African perspective, WRC Report No. 297/1/92, Water Research Commission, Pretoria, various pages - see the chapter on water quality, elsewhere in this publication. (v) The Department of Water Affairs and Forestry, Pretoria, undertook a series of hydrographic surveys on several important dams in Natal/KwaZulu. Data are presented on the storage capacity of each dam, as well as sediment statistics. An example is given below: Anonymous, 1987. Henley Dam capacity determination, Hydrographic Survey, Directorate: Survey Services, Department of Water Affairs, Pretoria, 20 p. + app. (vi) Diagrams and maps showing existing and planned dams (as envisaged in 1978) in Natal/KwaZulu are presented in Thorrington Smith, Rosenberg and McCrystal, 1978. Towards a plan for KwaZulu: a preliminary developmentplan, VOl 1, The written report, 341 p., arid VOl 2, Atlas of maps and illustrations, various pages, _KwaZulu Government, Ulundi. Similar information can be found in Ninham Shand and Partners, 1971. Water resources of the Natal South Coast, Natal Town and Regional Planning Commission Report, VOl 18A, 31 p. + app., and VOl 18B, Appendices, various pages, Pietermaritzburg; as well as in Chew, J.A. and Bowen, 1965. The water resources of the 1II0vo River: a preliminary survey of the 1II0vo River and its water storage possibilities, Natal Town and Regional Planning Commission Report, VOl 12, Pietermaritzburg, 37 p. + app. See also Chew, J.A. and Bowen, 1971. The water resources of the coastal areas of northern Natal and Zululand, Natal Town and Regional Planning Commission Report, VOl 17, Pietermaritzburg, 18 p. + app., plus James, W., 1973. Storage of water on the Zululand coastal plains: a brief study of the feasibility of conserving runoff from the lower-lying parts of most Natal catchments, and of distributing the water from a storage area in Zululand to coastal demand centres, Natal Town and Regional Planning Commission Report, VOl 22, Pietermaritzburg, 57 p. (viii Some data such as capacity and the irrigation potential of irrigation dams on farms in Natal, for which a subsidy was applied for, are available from the Department of Agriculture, Private Bag X9059, Pietermaritzburg, 3200. Data on dams and reservoirs in KwaZulu built by or on behalf of the KwaZulu Department of Agriculture and Forestry, or the KwaZulu Department of Works, are available from
100 the respective departments at Private Bag X05, Ulundi, 3838, and Private Bag X03, Ulundi, 3838. (viii) Readers should note that the names of one canal and 11 dams in South Africa have been changed. The relevant information is as follows: Old name of dam/canal New name of dam/canal Braam Raubenheimer Dam (eastern Transvaal) Kwena Dam Charlie Malan Dam (eastern Cape) Impofu Dam Fanie Batha Dam (northern Transvaal) Tzaneen Dam Hans Strijdom Dam (northern Transvaal) Mokolo Dam H.F. Verwoerd Dam (Orange Free State) Gariep Dam Hudson Ntsanwisi Dam (eastern Transvaal) Nsami Dam Jan Wassenaar Dam (northern Transvaal) Klaserie Dam Lake Mentz (eastern Transvaal) Darlington Dam Nokmokgomo Matlala Dam (eastern Transvaal) Arabie Dam Paul Sauer Dam (eastern Transvaal) Kouga Dam P.K. Le Roux Dam (Orange Free State) Vanderkloof Dam Sarel Hayward canal (Orange Free State) Orange-Riet canal All dams with a wall height in excess of 5 m and a capacity of more than 50 000 m 3 , are automatically considered to be dams with a safety risk. These dams must be classified on the basis of size and hazard potential, in order to determine the level of safety control required in terms of Government Regulation Notice GN R1560/86. The size classification of larger dams with a safety risk (dependent on wall height) is shown in Table J29.
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99<br />
<strong>of</strong> dams in NatallKwaZulu can also be found in Noble, R.G. and<br />
Hemens, J., 1978. Inland water ecosystems in South Africa - a<br />
review <strong>of</strong> research needs, South African National Scientific<br />
Programmes Report No. 34, Cooperative Scientific Programmes,<br />
CSIR,. Pretoria, 150 p. The (zero) sediment accumulation as a<br />
percentage <strong>of</strong> full capacity data in the above table, do not<br />
necessarily reflect the current situation in certain dams. Some<br />
updated sediment data are provided in Rooseboom, A., 1992.<br />
Sediment transport in rivers and reservoirs: a southern African<br />
perspective, WRC Report No. 297/1/92, Water Research<br />
Commission, Pretoria, various pages - see the chapter on water<br />
quality, elsewhere in this publication.<br />
(v) The Department <strong>of</strong> Water Affairs and Forestry, Pretoria, undertook<br />
a series <strong>of</strong> hydrographic surveys on several important dams in<br />
Natal/KwaZulu. Data are presented on the storage capacity <strong>of</strong> each<br />
dam, as well as sediment statistics. An example is given below:<br />
Anonymous, 1987. Henley Dam capacity determination,<br />
Hydrographic Survey, Directorate: Survey Services, Department <strong>of</strong><br />
Water Affairs, Pretoria, 20 p. + app.<br />
(vi) Diagrams and maps showing existing and planned dams (as<br />
envisaged in 1978) in Natal/KwaZulu are presented in Thorrington<br />
Smith, Rosenberg and McCrystal, 1978. Towards a plan for<br />
KwaZulu: a preliminary developmentplan, VOl 1, The written report,<br />
341 p., arid VOl 2, Atlas <strong>of</strong> maps and illustrations, various pages,<br />
_KwaZulu Government, Ulundi. Similar information can be found in<br />
Ninham Shand and Partners, 1971. Water resources <strong>of</strong> the Natal<br />
South Coast, Natal Town and Regional Planning Commission Report,<br />
VOl 18A, 31 p. + app., and VOl 18B, Appendices, various pages,<br />
Pietermaritzburg; as well as in Chew, J.A. and Bowen, 1965. The<br />
water resources <strong>of</strong> the 1II0vo River: a preliminary survey <strong>of</strong> the 1II0vo<br />
River and its water storage possibilities, Natal Town and Regional<br />
Planning Commission Report, VOl 12, Pietermaritzburg, 37 p. +<br />
app. See also Chew, J.A. and Bowen, 1971. The water resources<br />
<strong>of</strong> the coastal areas <strong>of</strong> northern Natal and <strong>Zululand</strong>, Natal Town and<br />
Regional Planning Commission Report, VOl 17, Pietermaritzburg,<br />
18 p. + app., plus James, W., 1973. Storage <strong>of</strong> water on the<br />
<strong>Zululand</strong> coastal plains: a brief study <strong>of</strong> the feasibility <strong>of</strong> conserving<br />
run<strong>of</strong>f from the lower-lying parts <strong>of</strong> most Natal catchments, and <strong>of</strong><br />
distributing the water from a storage area in <strong>Zululand</strong> to coastal<br />
demand centres, Natal Town and Regional Planning Commission<br />
Report, VOl 22, Pietermaritzburg, 57 p.<br />
(viii Some data such as capacity and the irrigation potential <strong>of</strong> irrigation<br />
dams on farms in Natal, for which a subsidy was applied for, are<br />
available from the Department <strong>of</strong> Agriculture, Private Bag X9059,<br />
Pietermaritzburg, 3200. Data on dams and reservoirs in KwaZulu<br />
built by or on behalf <strong>of</strong> the KwaZulu Department <strong>of</strong> Agriculture and<br />
Forestry, or the KwaZulu Department <strong>of</strong> Works, are available from