iah congress on groundwater: past achievements and future ...hydrogeologyofthe coastalregion...
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PROCEEDINGS OF THE XXXIAH CONGRESS ONGROUNDWATER:
PAST ACHIEVEMENTS AND FUTURECHALLENGES
CAPE TOWN/SOUTH AFRICA/26 NOVEMBER - 1 DECEMBER 2000
Groundwater:
Past Achievements
and Future ChallengesEdited by
Oliver Sililo et al.
The Water Programme, Environmentek, CSIR, South Africa
A.A.BALKEMA/ROTTERDAM/BROOKFIELD/2000
Groundwater: Past AchievementsandFuture Challenges, Sililo et at. feds;© 2000Balkema, Rotterdam, ISBN 905809 159 7
Table of contents
Foreword
Preface
Sponsors
UK' '-'."! ,..'s.i\J i T * v
\HV-(V;n',,-- ,:*,' ;-'-:JOTnUM
XIX
XXI
xxm
Keynote papers
The mineralogy of microbial ecology 3
P. C.Bennett & J.R. Rogers
Towards comprehensive groundwater resource management in South Africa 7
KBraune
Assessing pesticide pollution of groundwater: Current knowledge and remaining gaps 17
P.J.Chilton, M.E. Stuart, AR.Lawrence, D.CGooddy, R.J.Williams &AC.Johnson
Groundwater resources at die turn of the millennium: Taking stock and looking forward 27
S.S.D.Foster
Hydrogeology and wastemanagementstrategies 35
M.J.Knight
The use of monitored natural attenuation as a cost-effective techniquefor groundwater 41
restoration
D.N.Lerner, S.F.Thornton & R.M.Davison
Modeling groundwater flow and mass transport in heterogeneous media: 49
Issues and challengesC-F.Tsang
1 Determination ofaquiferparameters, resource assessment! evaluation
The applicability ofDC resistivity in some geologicalsurroundings in Sweden
J.Aaltonen
The vertical head distribution in a coastal sand-dune aquiferR.I.Acworth, R.Soriano & I.LTurner
61
67
v
Application ofremote sensing and geographical information system to hydrogeological 73
studies in theUpper West Region, Ghana
B.K.Banoeng-Yakubo & L. Skjernaa
Groundwater reservoir characterization based on pumping test curve diagnosis 81
in fractured formation
/. Bardenhagen
Determination of aquifer characteristics of semi-confined aquifers from single well tests 87
WKBoehmer
The value ofgroundwater resources associated with carbonatites 93
F. S.Botha, J. L.van Rooy &J.J.P.Viviers
The study ofkarst spring recession in Slovenia 97
M.Brencic
Preliminary assessment of the groundwater potential of the Tsumeb Aquifers 103
in northern Namibia
R.Bufler, P.Ambs, T.Himmelsbach, KTordiffe & R.Baumle
Groundwater occurrence in hard rocks in the federal district ofBrasilia - A sustainable 109
supply?J.E.G.Campos& U.Troger
Quantifying theheterogeneity offracture systems: An index for fracture flow network 115
representations at different scales
D.Cesano, ABagtzoglou & B.Olofsson
Adequate depth ofboreholes in hard rocks: A case study in Ghana 121
P.KDarko&J.Krdsny
The use of borehole tomography to image the saline interface - A case study from New South 127
Wales, Australia
G. R. Dasey & R.I.Acworth
Thermal analyses for groundwater flow assessment in a sedimentary basin ofJapan 131
J. R.Dim, Y.Sakura, AMiyakoshi & K. Fukami
Application of the electrokinetic sounding technique for geohydrological investigations 135
in a fractured rock aquifer systemF.D.Fourie, J.F.Botha,R.Grobbelaar & G.J.van Tonder
Specific surface area of glacial drift material determined by laboratory experiments 141
A Fransson
Recharge assessment: Comparing tracers, micro-meteorology and soil water models 147
J.CGehrels
VLF method applied to hydrogeological prospecting in the gneissic-migmatitic hard rock 153
aquifer of Evora, South PortugalAGomes, AChambel & J.Duque
Hydraulic seepage within an astatic karst lake, North-Central Florida 159
/.D. Hirsch &AF. Randazzo
CSAMT mapping of a deep hydrogeological structure in Mauritius Island 165
J.LJoin, B.Robineau, M.Courteaud & M.Ritz
VI
Groundwater resource developments in the Northern Territory, Australia 169
P.Jolly, D.George, SJickell, U.Zaar & D.Chin
Benefits ofincorporating remote sensing techniques as amethodological approach 175
for improved borehole siting infracturedrock aquifersN.Kellgren & P.Sander
The valuation ofmajor aquifers of the Upper Silesia region 181
A Kowalczyk, ARoikowski & A. J. Witkowski
Geologic factors influencing distribution of hardrock transmissivity 187
J.Krdsny
A geophysical perspective in siting high yielding boreholes in the lower Karoo aquifer 193
in western Botswana
H.Kumar, D. Sarma & LCarlsson
Groundwater evapotranspiration - Underestimated component of the groundwater balance 199
in a semi-arid environment - Serowe case, Botswana
M.W.Lubczynski
Location ofa well field in a coastal alluvial aquifer of southern Sardinia, Italy, subjected 205
to saline water intrusion
G.Luise, CSechi & P.Ciabatti
Hydrogeology of the coastal region of Jakarta, Indonesia 209
H.Maathuis, W.Mak & S.Adi
The effects of alien vegetation clearing on a coastal aquifer, Bushmans River Mouth, 215
Eastern CapeL.GAMaclear&J.C.Kotze
Hydrodynamic investigations in a recentvolcanic aquifer, Reunion Island, using single well 221
tracer test
J. S. Martial, J.LJoin & J.Coudray
Conceptual model ofgroundwater flow in stratified mountainous ten'ain, Utah, USA 225
AL.Mayo & T.H.Morris
Estimating the reliable output of wells 231
B.D.R.Misstear & SBeeson
The use ofthermal imagery in ground water studies 235
K. L Morton &AJ. Franszen
Rational utilization ofgroundwater for water supply engineering 241
P.Nemethy & D.Vlckovd-Michalikovd
Groundwater exploration in complex fractured rock 247
I.Neumann & K.Sami
Recharge-discharge relations of the Vipava karst aquifer, Slovenia 253
M. Petric
Water table variation due to time-varying recharge and withdrawal 259
S.N.Rai&AManglik
VII
Hydrogeology of Nowergup Lake, Perth, Western Australia 263
AQ.Rathur <& M.Banda
Groundwaterin hard rocks, Oppland county, Norway 269
E.Rohr-Torp
The MRS technique for groundwater resources evaluation - Test results from selected sites 273
in Southern Africa
J.Roy & M.W.Lubczynski
Providing ground water supply and assessing borehole yield in a disaster relief context 281
F.Ruden & KSami
Change of subsurface temperature caused by climatic change in Japan 287
Y.Sakura, Y.Uchida, M.Taniguchi, I.Kayane & M.P.Anderson
Scientific support for sustainable groundwater management: A modelling study in Botswana 291
using environmental tracers
B.Schaffner, Y.Y.Chen, T.Kelepile, W.Kinzelbach, LCarlsson &I.Mannathoko
Theory and procedure of thermal fluid logging in discontinuous rock mass 297
M.Schreck, KNakagawa & KSuenaga
Investigation ofwater resources in arid climate using radar 303
D.Schulze-Makuch &P.Haddad
The role of bypass- and matrix flow in the unsaturated zone for groundwaterprotection 307
K.-P. Seller, S.v.Loewenstern & S.Schneider
Groundwater recharge deduced from He isotopes in the Botswana Kalahari 313
E.T.Selaolo, D.R.Hilton & H.E.Beekman
Predicting fractured rock hydrogeological parameters from field and laboratory data 319
J.M.Sharp, Jr, T.Halihan, M.M.Uliana, G.P.Tsoflias, M.T.Landrum &R.Marrett
Estimation of groundwater recharge to the Kanye dolomite aquifer in Botswana 325
M.Simonic, AAdams, LCarlsson & CMarobela
Natural groundwaterrecharge assessment: Role of preferential flow in semi-arid fractured 331
aquifersB.S.Sukhija, D.V.Reddy, P.Nagabhushanam & S.Hussain
Geology and resistivity characteristics of the Stampriet Artesian Basin 337
G.Symons, R.McGMiller, Y.Hata, Y.Yamasaki, K. Sugawara & U.Noell
Groundwaterrecharge estimation in the Pingtung Plain, Taiwan 343
C.-S.Ting
Analysing the geometry ofSouth African fractured rock aquifers 349
Ivan der Voort & G.J.van Tonder
A tracer test in a fractured aquifer that gave a groundwater flow rate of kilometers per day 355
AKVan Wyk, ECMurray & G.J.van Tonder
Deep flowing groundwater in the Table Mountain Group quartzite 359
J. M. C.Weaver & A. S. Talma
VIII
2 Groundwater modelling
Comparison ofgenetic algorithms with othermethods for the ambient groundwater 367
monitoring networkplanningL-CChang, H.-C.Su & C-LTien
Construction of groundwater model for Pusan area, South Korea 373
B.-W.Cho,B.-J.Lee,J.-H.Sung,B.-D.Lee & C-O.Choo
Hydraulic fracturing of water wells in Botswana 379
V.Devalpally, M. SMdamarty & L. Carlsson
Complementarity of electromagnetic prospecting and groundwatermodelling to study shield 385volcano hydrogeology: Piton de la Fournaise volcano case study, Reunion Island
J.L. Folio, J.LJoin, B.Robineau, J. Coudray &. M. Ritz
Groundwater conditions in me Upper Shire Valley, Malawi: A modelling synthesis 389
SLHorrocks, W.G.Burgess & P.Mkandawire
The interaction between coastal lakes and the surrounding aquifer 395
B.E.Kelbe & T.Germishuyse
Assessing uncertainty in sustainable yield 401
N.P.Merrick
Three-dimensional numerical models of groundwater flow and solute transport in fractured 407
granites: Impact oftunnel construction in the groundwater system at the Asp6 island, SwedenJ. Molinero, J.Samper & R.Juanes
Robust groundwater management through second-order cone programming, SOCP 413
J.M.Ndambuki, T.Terlaky, C.B.M.Stroet & EJ.M.Veling
Hydrogeological investigations in the Otavi Mountain Land 419
G. Schmidt & D. Ploethner
On variable-density groundwater flow in heterogeneous porous media 425
C. T. Simmons & J. M.Sharp, Jr.
Groundwater investigation and modelling ofeffluent irrigation: A case study 431
J.J. GVermaak, D. G.Walker &J.C. F.Barnes
Optimised calibration ofregional groundwater model through inverse modeling 437
Y. S. Yang, AACronin & R. M. Kalin
3 Chemical and isotopic characterization ofgroundwater
Groundwater salinization in parts of southern Ghana 445
T.EK.Armah
A study on the mixing phenomena between surface water and groundwater induced pumping 451
using environmental isotope tracers
D. Bae, C. Kim, Y.Koh & K. Kim
Groundwater sampling during the mud-rotary drillingprocess 455
ABittner & G.Christelis
IX
Application of environmental isotope techniques to hydrological and pollution problems 459
in the urban environment
MJ.Butler, BTh.Verhagen & M.Levin
Geochemical modelling and laboratory experiments to test the feasibility of artificial recharge 465
LCCave
Geochemical processes affecting the composition of mineral waters in the South Portuguese 471
Zone, PortugalA Chambel & CAlmeida
Dissolved radon concentrations in fractured rock aquifers 475
P.G.Cook & J. C. Dighton
High nutrient and chloride loads to surface waters in polder areas due to groundwater seepage 481
P.G.B.deLouw, G.AP.H.van den Eertwegh & J.Griffioen
Isotope based assessment ofgroundwater renewal: An international study of the unsaturated 487
zone
WM.Edmunds & B.Th.Verhagen
Evolution of high-pH Na-HC03 groundwaters in anorthosites: Silicate weathering 493
or cation exchange?B. Frengstad & D. Banks
Regional scale solute transport modelling ofa Permo-Triassic sandstone aquifer 499
B.V.Furlong, J.H.Tellam, R.Mackay, J.AIngram & AW.Herbert
Arsenic in groundwaters ofthe southeast of Tucuman Province, Argentina 503
M.CGarcia, D.S.Fernandez, M.del ValleHidalgo & M.ABlesa
Hydrochemical characteristics ofthe Faria basin, northeastern West Bank 509
M.Ghanem & B. Merkel
Modelling mixing of waters in a layered basaltic aquifer in a tropical climate at Riviere 515
de l'Est, Reunion Island
J.LHoareau, E.Nicolini & S.Violette
Sustainable management ofgroundwaters in dryland salinity affected Spring Creek 521
catchment, New South Wales, Australia
J.Jankowski & SShekarforoush
Biofouling in boreholes of the Klein Karoo Rural Water Supply Scheme, Oudtshoom, South 527
Africa, and the effect on well scheme managementJ. LJolly
Isotopic characterization of groundwater and surface water in the Keta Basin, Ghana 533
N. O.Jfirgensen & B. K. Banoeng-Yakubo
An aquifer model based on chemistry, istopes and lineament mapping: Little Karoo, 539
South Africa
J.CKotze, B.Th.Verhagen & MJ.Butler
Assessment of fluoride concentration in groundwater, Saldungaray, Argentina 545
E. E. Kruse & J.EAinchil
x
Hydrogeology, groundwater resources and salinification processes in the lower Okavango 549Delta, northwestern Botswana
F.Linn, M.Masie &AJ.Rana
Chemical character ofgroundwater in a basalt aquifer, North Queensland, Australia 555K.L.Locsey&M.E.Cox
Boron isotope geochemistry as a tool to delineate natural groundwater processes 561J. D. Mather & N. C.Porteous
Groundwater quality and sustainability in an alluvial aquifer, Australia 567
W.McLean, J.Jankowski & N. Lavitt
Environmental isotopes as indicators forgroundwater recharge conditions below glaciated 575
areas in crystalline rocks of the central Swiss AlpsU.SOfterdinger, W.Balderer, SLoew & T.Vitvar
Predicting ion exchange parameters for Triassic Sandstone aquifers 581
K.E.Parker,J.H.Tellam&M.I.Cliff
Geochemical evolution ofgroundwater in metamorphic rocks of Tras-Os-Montes, Portugal 587
M.Rosdrio Pereira & C.Almeida
Rapid water quality changes in a thick clay sequence 593
B.ARobinson, JH.Tellam, J.B.Joseph &AW.Herbert
Example of 0- and H-isotope use to identify surface waterpollution in groundwater 599
I.CSaayman, S.Adams & C.Harris
Hydrogeology of the Ballimore region, central New South Wales, Australia 605
S.Schofield & J.Jankowski
Salinisation of a coastal aquifer in Mauritania: Salt wedge or bedrock alteration? 611
B. M.Semega, M. Lacroix, H. Q.Wang &J.P. Dupont
Arsenic and acidity in a groundwater system affected by acid sulfate soils, 615
Stuarts Point, Australia
J. V. S. Smith, J.Jankowski & J. Sammut
Geohydrology and isotope hydrology ofthe Lomagundi dolomite, Zimbabwe 623
SSunguro, K.Froehlich, BJh.Verhagen& WWagner
Karst aquifer characterization using physico-chemical spring data, Gran Sasso, Central Italy 629
M.Tallini, M.Petitta,D.Ranalli & SJersigni
CFC tracing ofgroundwater in fractured rock aided with'4C and 3H to identify water mixing 635
A S. Talma, J. M. C. Weaver, L N. Plummer & E.Busenberg
Characteristics of groundwater quality in the United Arab Emirates 641
CTang, SShindo, YSakura&LMachida
Calibration of a groundwater flow model for water management in Hamburg, Germany, using 647
groundwater age measurements and hydrochemical data
R.Taugs ScLMoosmann
Depth variations in aquifer hydrochemistry using alow-cost, multilevel piezometer 651
R.G.Taylor, M.H.Barrett, O.P.Baines, SATrowsdale, D.N.Lerner & SF.Thornton
XI
Groundwater quality trends related to aquitard salt storage at selected sites in the Lower 655
Murrumbidgee alluvium, Australia
W.Timms, R.LAcworth, J.Jankowski & SLawson
Groundwater flow in fractured rocks of central Namaqualand, South Africa 661
R.ATitus, S.Adams, KCPietersen & G.Tredoux
In-situ measurement ofphysico-chemical parameters down a borehole as a tool for resource 667
evaluation
G. Tredoux, L. C.Cave &J.F.P. Engelbrecht
Environmental isotopes assist in ground water sustainability assessment of the Taaibosch 673
fault zone, Northern Province, South Africa
BJh.Verhagen, MJ.Butler, M.Levin & E.van Wyk
3D groundwater modelling ofisotope data at Asp6, Sweden 679
B.Wallin & K.Innings
Pilliga Sandstone hydrogeochemistry, Great Artesian Basin, Australia 683
CAWolfgang& LWhite
4 Groundwaterpollution vulnerability and remediation
Sources of faecal contamination of shallow groundwaters in Kampala 691
M.H.Barrett, KJohal, G.Howard, SPedley & M.Nalubega
Using Kd-Test data in the estimation of contaminant attenuation and risk assessment 697
P.H.Beck & J.Jankowski
Simulation of mass transfer kinetics for chemically enhanced removal of residual 703
trichloroethene
T.B.Boving, ZZhang, W.Ji &M.L.Brusseau
Fieldrelationships and models of arsenic in aquifers of southern Bangladesh 707
W.G. Burgess, M.Barren, M.O.Cuthbert, S.E Mather, J.Perrin, M.K.Hasan, KM.Ahmed,
P.Ravenscroft & M.Rahman
The closure of existing waste piles in terms ofthe south African Department ofWater Affairs 713
and Forestry Waste Management Series
/. S. Cameron-Clarke &J.A Palmer
Effect ofrapidly urbanizing environment on the Thiaroye, Senegal, unconfined sandy aquifer 719
ICisse, S.Faye, C.B.Gaye, AFaye & S.Wohnlich
dilution vulnerability assessment in karstic aquifers: A case study of the Matese Mountains, 725
Southern ItalyACorniello &D.Ducci
Natural redox processes and bioremediation in the Gardermoen glaciofluvial aquifer, Norway 731
ADagestad
Proving natural attenuation widi modeling at a site contaminated by ammonium 737
and phenolicsR.M.Davison &D.N.Lerner
XII
Delineation of borehole protection zones in fractured rock aquifers 741
S.S.de Lange & G.J.van Tonder
Degradation behaviour of halogenated aliphatics influenced by concurrent chromate 747reduction in subsurface Fe°-reactor systemsM.Fruth & M.Schneider
Bacterial contamination in Norwegian groundwater wells in bedrock 751S.Gaut, G.Storr0 & B.Brattli
Soil pore manipulations to increase bioaccessible pore volume 755
J.H.Gorres, MAStoltJ.AAmador, CSchulthess & P.W.Johnson
Using urban aquifers: Assessing water quality issues 759
R.Greswell, AThomas, K.A. Shepherd, R.I.Sauer,R.G.R.Mitchener, J.M.Harris, RMackay, J.H.Tellam
&M.O.Rivett
Colloid release due to degradation of organic contaminants at a former gas plant, Gaisburg, 767
Germany
T.Hofmann & T.Schafer
Transport of suspended solids from karst to alluvial aquifer: Column/field experiment 773
N. Massei, M.Lacroix, H. Q. Wang &J.P.Dupont
Characterization and remediation of alow permeability formation contaminated 779
with halogenated solvents
B.AMemon, L D.George & M. MAzmeh
Hydrogeological characterization of fractured rock for Sweden's nuclear waste storage 785
M.Morosini & I.Rhen
Practical and responsible approaches to soil and groundwater contamination management 791
at a South African metal plating factoryR.D.Morris, H.G.AllertonIII & J.P.W.van der Westhuysen
Risk-based decision analysis for the selection of remediation strategy at a landfill 797
J.Norrman
Groundwater pollution, landuse and environmental impacts on Lusaka aquifer 803
LA Nyambe & C. Maseka
Modelling and field trials for the development of a rehabilitation strategy for an existing 809
hazardous waste site
J.A Palmer, AJ.Oliver &I.S Cameron-Clarke
Enteric virus detection in groundwater using a glass wool trap 813
K. L Powell, M. H. Barrett, S. Pedley, J.H. Tellam, K.A. Stagg, R.B. Greswell & M.0. Rivett
Natural resistance to agricultural contamination of a limestone aquifer 817
5.C.Roberts &J.M. McArthur
Passive in situ treatment of Cr(VI)-contaminated groundwater by zero-valent iron: 823
Results of a field studyM. Schneider
XIII
Risk assessment, modeling groundwater contamination, capping and optimizing hazardous 827
waste landfills from metal smelters
/. E. Sorlie & K.Rudolph-Lund
In situ measurement ofoleoporic fracture aperture by DNAPL surrogate injection 833
A Steele & D. N.Lerner
Experiences with an in situ groundwaterremediation of VOCs in Hamburg, Germany 839
J.Taugs
A volume-based approach to predicting the fate ofDNAPLs in fractured aquifers 843
GP.Wealthall & D.N.Lemer
Changes of quantity and quality of groundwater in the Triassic carbonate formation 847
in Upper Silesia, Poland
AJ.Witkowski & A. Kowalczyk
Effects of soil environment changes on the behavior of VOC's in unsaturated zone 853
M.Yoshimura & CTang
5 Integrated water resource management
Groundwater status ofthe City of Stockholm 859
MAastrup, JAnderberg & B.Thunholm
A review ofimpacts offorestry on groundwater and implications for forest management 863
ARAllen & D.V.Chapman
Current and future challenges for managing groundwater quality in Perth, Western Australia 869
SJAppleyard
Groundwater resources management in Africa with the aid of databases and GIS 873
I. F.Blecher
Groundwater management below sea-level coastal areas in the Po Delta, NE Italy 877
M.Bondesan, AGargini ScAGiovannini
US regulation of animal feeding operations: Need for a watershed approach 883
T.J.Centner, M.E.Wetzstein &J.W.Worley
Experiences from implementation of artificial recharge projects in India 889
D.KChadha
Assessment of saline groundwaterresources in the goldfields ofWestern Australia 897
D.P.Commander & S.LJohnson
Classification of groundwater resources under the South African National Water Act 901
J.Conrad & Ivan der Voort
The potential ofriverbank filtration for drinking water supplies when aquifers are brackish 907
P.J.Dillon, W.Rhebergen, M.Miller &H.Fallowfield
Small scale aquifer storage and recovery - A case study from England and implications 913
for wider developmentJ.EDodds
XIV
Development scenarios for sustainable urban water systems 917
M.Eiswirth, H. Hotzl & L. S.Burn
Hydrogeological decision analysis for selection ofalternativeroad stretches and designs 923
H.S.Eklund&L.Rosen
Investigation oftrace elements for the assessment ofsustainable water supply 929
B.Fritz, CSommer-vonJarmersted.APekdeger, SMschnack & MJekel
Managing groundwater resources with increasing sulphate concentration: A case study 935
from GermanyT.Grischek, V.Schmalz, E.Worch, J.Herlitzius <& W.Nestler
Salinity and floodplain tree health in the lower River Murray, Australia 941
K.L.Holland,AJ.Telfer,G.R.Walker,S.D.Tyerman&LJ.Mensforth
Advancing technologies inthe hydrogeological design ofurban subdivisions 947
K.W.F.Howard, B.Beatty, J.Thompson & SMotkaluk
A framework for assessing water resources and abstraction sustainability 953
S.Kirk&R.Soley
Informationon interactions between groundwaterand vegetation relevantto South African 959
conditions: A review
D. CLe Maitre, D. F.Scott & C. Colvin
Failure of rural schemes in South Africa to provide potable water 963
G.Mackintosh & CColvin
Aquifer Storage and Recovery (ASR) using water treated to irrigation standards 969
R.R.Martin, N.ZGerges & P.J.Dillon
Major issues in sustainable water supply in Botswana 975
O.A.Masedi, 0. Katai, I. Muzila & L.Carlsson
Groundwaterresources management in theSADC region; A field of future regional 981
co-operationP. Molapo, S. K.Pandey & S.Puyod
Testing borehole injection for artificially recharging secondary aquifers in Southern Africa 987
E.C.Murray & G.Tredoux
Management of groundwater resources in Lusaka, Zambia, and expectations forthe future 993
D.CW.Nkhuwa
Determination ofthe groundwater component of the reserveusing theintermediate reserve 999
determination method
R. Parsons & HMacKay
Challenges in evaluating solute transport from a long-term ASR trial in a heterogeneous 1005
carbonate aquiferP.Pavelic, P.J.Dillon & N.ZGerges
Sustainable management of groundwater in Neapolitan volcanic areas, Italy 1011
VPiscopo, F.Formica & VAllocca
xv
Support for integrated groundwater/ surface water monitoring and assessment for sustainable 1017
catchment management
D.W.Peach, BAdarns, J.P.Bloomfield & H.Wheater
Semiarid regions being the millstone ofnew developed countries: Case study Rioverde basin, 1023
Mexico
B. Planer-Friedrich & B.J. Merkel
Towards a groundwater management plan for the Taaibos Spruit and Leeu Spruit catchments, 1027
South Africa: A situation analysisJ.A Pretorius & B. H. Usher
Sustainable water resources management in an agricultural environment 1033
M.Razack, M.Larminach & O.Gaillard
Sustainable groundwater supplies for rural communities: A common approach 1039
to project auditN.S.Robins, R.CCalow, KPietersen & R.Titus
Groundwater resources in Berlin, Germany: Will there be enough fresh water in the future? 1043
C.Sommer-von Jarmersted, B. Fritz &APekdeger
Sustaining ecosystems and cultures dependent on springs ofthe Grand Canyon, USA 1047
AE. Springer & E.S.Wilson
Managing mine de-watering for bulk groundwater supply in the Kalahari region, 1053
South Africa
G.SJu Toit van Dyk,L.D. Ferris & J.M.Nel
The role of groundwater quality monitoring in the strategy of groundwater protection 1057
J.Vrba
The impacts of dual-porosity aquifers on Aquifer Storage Recovery (ASR) schemes 1065
AT.Williams, LGaus &I.N.Gale
Comprehensive determination of the resource directed measures for groundwater 1071
in South Africa
Y.Xu, EBraune, CColvin,D.LeMaitre, KPietersen & T.Hatton
Groundwater resources protection and aquifer recovery in China 1077
ZHan
Geostatistical approach to groundwater quality assessment in a rural zone of the Tejo River 1083
basin border, PortugalJ.Duque &A.Chambel
6 Groundwater and mining
Hydrogeochemical tools to define sources of ground-water inflow to surface and underground 1091
mines
DA Bird & J.J. Mahoney
Hydrogeological and geochemical investigations of an acidic mining lake as a basis 1099
for a biotechnological remediation
E. Bozau, K. Knoller & G. Strauch
XVI
Investigation on deep water resources by tunnels within the "Piton des Neiges" volcano, 1103
Reunion Island
L. Bret, J.-LJoin & J. Coudray
Dewatering and the tourist potential of hydrogeological resources of the Gavorrano mine, 1107
Tuscany, ItalyCAGarzonio
Salinity issues relating to decommissioned open pits in Western Australia 1113
J.W.Hall
The impact of mining on groundwater quality in the Tarkwa area, Ghana 1119
B.KKortatsi
Witwatersrand deep Au mines: Windows into deep subsurface microbial communities 1125
T.C.Onstott,D.P. Moser&R.J.Wilson
Assessment and rehabilitation ofreclaimed gold tailings dams areas inSouth Africa 1129
T.Rosner,JJ.G.Vermaak,Avan Schalkwyk & CJ.Viljoen
Management of coal mining impacts on water resources in South Africa 1135
DA Salmon
1141
Author index
XVII