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19 TableJ8: Hydrological Research Unit (HRU) tertiary and quatemary catchments in NatallKwaZulu (continued). Tertiary catchment Quaternary sub-catchment Hydrological zone code number code number V03A V031 - V033 V031 - V033 (23) V03B V034 - V039 V034 - V039 (210) V04 V041 - V049 210 V05 V051 - V059 210 V06 V061 - V069 210 V07A V071 - V073 V071 - V073 (23) V07B V074 - V079 V074 - V079 (210) V08 V081 - V089 27 U Ull Ulll - Ul19 26 U12 U121 - U129 23 U13A U131 - U136 26 U13B U137-U139 26 U21 U211-U219 26 U22 U221 - U228 26 U23A U231 - U234 U231 - U234 (22) U23B U235 - U239 U235 - U239 (26) U30 U301 - U308 26 U40 U401 - U409 26 T T31 T311-T319 23 T32 T321 - T329 25 T35 T351 - T359 23 T41 T411 -T419 21 T42 T421 - T428 21 T51 T511-T519 22 T52 T521 - T529 22 T53 T531 - T537 21 T54 T541 - T549 21 T55 T551 - T558 21
20 Source: After Middleton, B.J., Lorentz, S.A., Pitman, W.V. and Midgley, D.C., 1981. Surface water resources of South Africa, VOL V: drainage regions MNPQRST. The eastern Cape Part 1 (Text!, various pages, and Part 2 (Appendices!, various pages, HRU Report No. 12/81, Hydrological Research Unit, University of the Witwatersrand, Johannesburg, as well as Pitman, W.V•• Middleton, B.J. and Midgley, D.C., 1981. Surface water resources of South Africa, VOL VI: drainage regions UVWX. The eastern escarpment Part 1 (Text), various pages, and Part 2 (Appendices), various pages, HRU Report No. 9/81. Hydrological Research Unit, University of the Witwatersrand. Johannesburg. Note: li! HRU tertiary catchment W34 does not exist, while tertiary catchment W46A is in Swaziland. Table J9: (ii) Parts of quaternary sub-catchments or individual quaternary subcatchments themselves, may lie outside NatallKwaZulu. Readers should consult maps showing the location of tertiary and quaternary catchments, found in the above two references. Cross reference of Department of Water Affairs and Forestry secondary· drainage regions and Hydrological Research Unit (HRU! quaternary subcatchments in Natal/KwaZulu. Department of Water Affairs and HRU quaternary sub-catchment Forestry secondary drainage region code number W W11 = 2111 W110 - Wl16 W12=2112 W131 - W136 W141 - W146 W151 -W157 W13=2113 W121 - W125 W21 = 2121 W211 - W217 W221 - W226 W231 - W239 W262 W22 = 2122 W241 - W248 W251 - W256 W261 W23 - 2123 . W263 - W267 W30 = 2130 W311 - W317 W321 - W326 W331 - W339 W351 - W354 W361 -W366
Page 1: A WATER RESOURCES AND SANITATION SY
Page 4 and 5: Contents 1 11111111111:1&11 CHAPTER
Page 7 and 8: lillllllllllll.'. Tables (continued
Page 9 and 10: 11111111];11,,11. 10.1 Introduction
Page 11 and 12: Table J2: Water budgets for Natal/K
Page 13 and 14: Table J4: Overall gradient distribu
Page 16 and 17: 13 111.IJJ1111111 (when runoff: rai
Page 18 and 19: Table J7: 15 Hi) A small part of Kw
Page 20 and 21: 17 1\11••111;[11. Table J7: App
Page 24 and 25: 21 11111••111111111 TableJ9: Cr
Page 26 and 27: 23 Table J10: Areas. mean annual pr
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Page 40: 37 Table J10: Areas. mean annual pr
Page 43 and 44: IlfllllllllllJJilll 40 Table J12: K
Page 45 and 46: 10.6 Runoff models 42 Models are no
Page 47: 111I111'llll1JII 10.9 The variabili
Page 52 and 53: 49 lil11l1tllll;lllll Table J20: Es
Page 54 and 55: 51 Table J20: Estimated annual wate
Page 56 and 57: 53 Table J22: Estimated annual wate
Page 58 and 59: 55 Ijlllltl1llflll (ii) Considerabl
Page 60 and 61: 57 large catchments data. The Centr
Page 62 and 63: 59 1111111111111' KwaDlangezwa, 283
Page 64 and 65: Other reports 61 Research Unit, Dep
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Page 68 and 69: 65 Table J24: Department of Water A
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69 Table J24: Department of Water A
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79 Table J24: Depanment of Water Af
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81 Station closed Station closed U2
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83 Station Drainage region Station
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85 Table J25: Number of stations wi
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87 iI11J111!!ltllllil equal share i
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89 Source: liI After Anonymous, 198
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111111111111111 92 boards (discusse
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Table J28: Some relevant data on se
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IDIIIIIDII':1111 98 (ii) The co-ord
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100 the respective departments at P
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1IIIIIIJIII.i1 102 Table J31: Categ
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104 10.16.2 Environmental impacts o
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Table J32: 106 A simplified form of
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1111111111111 108 Table J33: Action
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110 There is a growing South Africa
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112 Attention has also been focused
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114 10.17 Some legal aspects of wat
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116 time (mean exceedance flow), du
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IIII.IIWIIIII 118 10.17.4 Use of wa
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1[lIlIIIIIIJ. 120 Government dams,
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10.18.4 River diversions 122 Depart
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124 10.18.6 Irrigation districts an
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111(11111:41m'l 126 Table J36: Irri
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Table J37: Irrigation boards in Nat
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Tabla J37: Irrigation boards In Nat
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133 Table J38: Some urban areas in
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135 Table J38: Some urban areas in
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Table J38: 137 Some urban areas in
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139 Source: (i) After Ardington, E.
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141 i111_1illll1l noted above!. are
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143 (ii) The Directorate of Land an
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145 1111111111111 the Board will as
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147 Table J40: Administrative regio
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149 111II1.llllIf:J Government Noti
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151 111I.lIllllil1 Government agenc
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153 Table J43: Joint Services Board
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156 Source: (i) After Jenkin, F. (e
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158 Chief Directorate: Administrati
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Source: See also: Note: 160 Afterth
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162 off low - responsible inter ali
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11111.'.111:11111 164 If it became
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tlll••••I:IB11 NOTES: 166
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Contents 167 CHAPTER 11: GROUNDWATE
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Tables 169 Table K1: Some geologica
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174 Bate, 1992}*. The use of water
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176 X313, Pretoria, 0001; as well a
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179 a particular site, then a stati
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181 111...1[111 of streams and rive
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183 good. with a total dissolved so
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(iii) Holocene sands lQuaternary) 1
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187 Table K1: Some geological forma
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189 fault-bounded blocks, although
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191 11.6.4 Aquifer characteristics
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193 coarse and the latter, fine and
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195 111.BIII!I!111 The yields of bo
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11...,].11 198 11.7 Methods of grou
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201 11...11111 Table K3: Methods of
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203 boreholes are drilled for both
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205 1111111111'.1 3838. The borehol
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207 11.11 Standards applicable to t
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(a) Gravity springs 209 Gravity spr
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Table K4: Spring discharge in the V
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214 Table K5: The number of ephemer
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JJI...lllJll 218 (h) Some of the wa
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i'•••liDl Group E: Pure water
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222 Bond, Van Wyk proposed the foll
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1[11....11.,1 224 (b) Chlorides are
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226 Source: Edwards, T.J., 1989. Pe
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228 also obtainable from the Ground
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Ill1••lll1l 230 • Hofkes, EH.
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232 • Vegter, J.R., 1995. Groundw
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234 • Meyer, R. and Godfrey, l.,
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Springs 236 • Africa Co-operative
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NOTES: 238
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239 CHAPTER 12: WATER SUPPLY PLANNI
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12.1 Introduction 241 111'1&111111
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243 rilliltl.'ll water consumption
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Table L2: Cattle 245 study of reduc
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Note: (j) (ii) (iii) 247 Animal wat
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249 111111:llllltJI Source: After A
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1111111118.1 252 Table L4: Some per
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lillll.'.II' 254 high income. Iow d
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* 256 to obtain. Difficulties inclu
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1111...11 (iii) 258 Home Glasson Pa
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260 Table L6: Some typical domestic
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* ** 262 are in agreement with cons
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Table L7: Some South African indust
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Table L7: 267 Some South African In
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Table L7: 269 Some South African in
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Table L7: 271 Some South African In
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Note: (i) (ii) (iii) (iv) (v) (vi)
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276 concentrate on the provision of
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278 Table L8: RSA-KwaZulu Developme
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Table L9: 281 RSA-KwaZulu Developme
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Table L9: 283 RSA-KwaZulu Developme
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286 the Green book, namely, Anonymo
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IIIRlmlllillS 12.4.2 Durban Metro W
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291 design phase of projects. Any a
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294 Table L12: Some extant water wh
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11111111111911 296 • Energy Resea
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299 11111111111111 Table l13: Speci
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301 Table L13: Specific training ag
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304 Road and Umlazi (Durban); Pinet
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307 Table L14: A spatial typology o
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310 Table L15: A typology of social
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1111111..11 312 Table L15: A typolo
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315 114,[llll1\'1 Table L16: Some s
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317 Table L18: Mean household size
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319 Illil;JJtllllll Table L19: Exis
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321 Table L19: Existing housing del
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323 1IIIi!:lil.'11 a month, and a s
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NOTES: 325
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