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33 Table J10: Areas. mean annual precipitation and virgin mean annual runoff from Hydrological Research Unit (HRU) quaternary sub-eatchments in NatallKwaZulu (continued). Quaternary Mean annual Gross/effective area Virgin mean annual sub-eatchment precipitation (km 2 ) runoff code number (mm) (10 6 m 3 ) U218 1040 88 16 U219 1079 57 12 Mean 952 Total 1038 Total 140 U221 983 143 19 U222 813 286 18 U223 762 205 9 U224 800 141 9 U225 989 197 36 U226 1037 242 57 U227 923 129 13 U228 985 205 29 Mean 926 Total 1 548 Total 190 U231 977 344 60 U232 973 410 84 U233 1095 394 112 U234 913 619 94 U235 927 438 49 U236 925 409 47 U237 877 1043 102 U238 1050 256 46 U239 949 519 89 Mean 945 Total 4432 Total 683 U301 1028 118 26 U302 1 134 179 33 U303 1099 203 55 U304 1073 145 29 U305 1 102 138 22 U306 1 110 105 21 U307 1064 193 32
34 Table J10: Areas. mean annual precipitation and virgin mean annual runoff from Hydrological Research Unit (HRU) quaternary sub-catchments in Natal/KwaZulu (continued). Quaternary Mean annual Grossfeffective area Virgin mean annual sub-eatchment precipitation (km 2 ) runoff code number (mm) (10 6 m 3 ) U308 1085 320 52 Mean 1085 Total 1401 Total 270 U401 882 329 33 U402 953 526 56 U403 959 254 33 U404 1 138 212 57 U405 1 137 274 66 U406 1081 587 90 U407 1 117 215 48 U408 1075 432 85 U409 1 100 326 69 Mean 1043 Total 3155 Total 537 T T311 984 485 69 T312 882 425 41 T313 868 480 42 T314 760 375 21 T315 821 625 46 T316 967 380 48 T317 949 240 28 T318 889 435 41 T319 953 145 17 Mean 887 Total 3590 Total 353 T321 910 190 32 T322 839 480 61 T323 950 310 65 T324 884 265 40 T325 830 495 62 T326 827 385 49
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 22 and 23: 19 TableJ8: Hydrological Research U
Page 24 and 25: 21 11111••111111111 TableJ9: Cr
Page 26 and 27: 23 Table J10: Areas. mean annual pr
Page 28 and 29: 25 1111III1I11,rllll Table J10: Are
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
Page 66 and 67: 63 1IIIIIE1111Elfl Id} The rest of
Page 68 and 69: 65 Table J24: Department of Water A
Page 82 and 83: 79 Table J24: Depanment of Water Af
Page 84 and 85: 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
Page 171 and 172:
Contents 167 CHAPTER 11: GROUNDWATE
Page 173:
Tables 169 Table K1: Some geologica
Page 178 and 179:
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
Page 315 and 316:
310 Table L15: A typology of social
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1111111..11 312 Table L15: A typolo
Page 320 and 321:
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
Page 330 and 331:
NOTES: 325
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