J.Conrad

Book publications: Co-authored by J. Conrad

1. Contributing author to UNESCO book publication IHP-V Project 3.1. Groundwater contamination inventory. Zaporozec, A.(Ed.)

Journal publications: Co-authored by J. Conrad

2. Conrad, J, Nel, J., and Wentzel J., 2004. The challenges and implications of assessing groundwater recharge: A case study - northern Sandveld, Western Cape, South Africa. Water SA Vol. 30 No. 5 (Special edition).

1. Sililo, O., Conrad, J., Dohse, T., Tredoux, G, and du Plessis, M. (2001). A procedure for deriving qualitative contamination attenuation maps from land type data. Journal of Hydrology 241, 104 - 109.

Research publications

5b. Conrad, J., & Colvin, C., 2000. Handleiding vir Boere: Die beskerming van grondwatergehalte. WRC Report No. 138/00, Water Research Commission, Pretoria.

5a. Conrad, J., & Colvin, C., 2000. Handbook of Groundwater Quality Protection for Farmers. WRC Report No. 116/00, Water Research Commission, Pretoria.

4. Conrad, J., & van der Voort, I., 1999. A GIS based experimental methodology to determine the utilisable potential of South African aquifers. WRC Report No. 840/1/99, Water Research Commission, Pretoria.

3. Conrad, J., Colvin, C., Sililo, O., Görgens, A., Weaver, J., & Reinhardt, C., 1999. Assessment of the impact of agricultural practices on the quality of groundwater resources in South Africa. WRC Report No. 641/1/99, Water Research Commission, Pretoria.

2. Sililo, O., Conrad, J., Murphy, K., Tredoux, G., Eigenhuis, B., Ferguson M., & Moolman, J., 1999. Investigation of the contamination attenuation characteristics of the soil aquifer system with special emphasis on the vadose zone. WRC Report No. 572/1/99, Water Research Commission, Pretoria.

1. Parsons, R, and Conrad, J., 1998. Explanatory notes for the aquifer classification map of South Africa. WRC Report No. 116/98, Water Research Commission, Pretoria.

General publications

Wentzel, J., and Conrad, J., 2003. Using space technology to verify water use. The Water Wheel, Volume 2 No 2. A publication of the Water Research Commission, Pretoria.

Conference Papers: Authored or co-authored by J. Conrad

33. Conrad, J.E., Pienaar, H., and Wentzel, J., 2005. Resource Directed Measures - Policies, Implementation and Lessons learnt from the northern Sandveld, Western Cape, South Africa. An oral paper presented by J. Conrad at the Biennial Groundwater Conference 2005, 7 - 9 March 2005, CSIR International Convention Centre, Pretoria, South Africa.

32. Zhang, J., Weaver, J., Conrad, J., and van Wyk., 2005. Groundwater monitoring network design for the Sandveld area using numerical models. Biennial Groundwater Conference 2005, 7 - 9 March 2005, CSIR International Convention Centre, Pretoria, South Africa.

31. Munch, Z., Conrad, J.E., Low, A.B., Pond, U., and Wentzel, J., 2005. Remote sensing based vegetation and groundwater dependency study: Northern Sandveld. A poster paper presented by J. Conrad Biennial Groundwater Conference 2005, 7 - 9 March 2005, CSIR International Convention Centre, Pretoria, South Africa.

30. Hughes, S., du Toit, W., Mahlambi, Z., Schonegevel, L., Conrad, J., 2005. Groundwater use assessments in South Africa. Biennial Groundwater Conference 2005, 7 - 9 March 2005, CSIR International Convention Centre, Pretoria, South Africa.

29. Basson, F.C., Conrad, J., Girman, J., Wentzel, J., and van Niekerk, A., 2005. South African Licence Application Decision Support System (SALADSS) - A tool for enhanced groundwater management. A poster paper presented by J. Conrad at the Biennial Groundwater Conference 2005, 7 - 9 March 2005, CSIR International Convention Centre, Pretoria, South Africa.

28. Wentzel, J., Conrad, J., Parker, A., and Zenzile, B., 2004. The assessment of "existing lawful use" of groundwater using remote sensing and geographic information systems. A poster paper presented by J. Conrad at WISA 2004 - The Water Institute of Southern Africa's Biennial Conference, Cape Town International Convention Centre, 2 - 6 May 2004.

27. Conrad, J, Nel, J., and Wentzel J., 2004. The challenges and implications of assessing groundwater recharge: A case study on the northern Sandveld, Western Cape, South Africa. Presented by J. Conrad at WISA 2004 - The Water Institute of Southern Africa's Biennial Conference, Cape Town International Convention Centre, 2 - 6 May 2004.

26. Conrad, J., Adams, S and Titus, R., 2003. GIS based assessment of groundwater recharge in the fractured rocks of Namaqualand, South Africa. Presented by J. Conrad at the IAH2003 Congress: Groundwater in Fractured Rocks - Prague, Czech Republic, 15 - 19 September 2003.

25. Titus, R., Parsons, R., Xu, Y., Conrad J., and Wu, Y., 2003. Groundwater management as part of Integrated Urban Water Management. Presented by R. Titus at the conference: Integrated Urban Water Management (IUWM) in the City of Cape Town, 1st Feb. 2003.

24. Conrad J., Adams, S., Knight, R., Saravanakumar, P., and Titus, R. (2002). Internet-based Namaqualand Geohydrological Information System. Groundwater Division, Western Cape Conference: Tales of a Hidden Treasure; Somerset West, 16th Sept 2002.

23. Conrad, J., and Girman, J. Information Systems for Integrated Water Resource Management (2002). Groundwater Division, Western Cape Conference: Tales of a Hidden Treasure; Somerset West, 16th Sept 2002.

22. Saayman, I., Colvin, C., Cavé, L., Moseki, C., Braune, E., Toksvad, T., and Conrad, J. National Guidelines to enable Integrated Groundwater Resource Management in Water Management Areas (2002). Groundwater Division, Western Cape Conference: Tales of a Hidden Treasure; Somerset West, 16th Sept 2002.

21. Silinga, A., and Conrad, J., 2001. The role of effective monitoring systems for sustainable rural groundwater supply (in press). Conference proceedings 27th WEDC Conference. People and systems for water, sanitation and health. 20 - 24 August 2001, Lusaka, Zambia.

20. Conrad, J, and van der Voort, I (2000). Classification of groundwater resources under the South African National Water Act. Conference proceedings. IAH2000 Congress, Cape Town, 27 Nov. to 1 Dec. 2000.

19. Conrad, J. E. and van der Voort, I (2000). Classifying groundwater under the National Water Act: A case study. Conference proceedings. Water Institute of South Africa (WISA) 2000, Sun City, 28 May - 1 June 2000.

18. Conrad, J.E., Hughes, S. and van der Voort, I. (2000). The new National Water Act: A case study on the applicability of commercial multi-spectral satellite data for determining the Groundwater Reserve. Conference proceedings (in press) : 28th International Symposium on Remote Sensing of Environment, Cape Town 27 - 31 March, 2000.

17. The application of GIS in assessing groundwater contamination susceptibility to potential point source pollution, Conrad, J., 1999. 14th International Corrosion Congress, Sept 27 to Oct 1, 1999, Cape Town, South Africa.

16. A procedure for using Land Type data to derive qualitative contaminant attenuation maps, Sililo, O. and Conrad, J., 1999. Conference Proceedings: IAH99, 6 - 10 Sept., Bratislava, Slovakia.

15. van der Voort and Conrad, 1999. The National Water Act: determining groundwater resource units and management classes. IAIA 99 Impact assessment as related to poverty and development issues in Southern Africa - What do we know and what do we need to know? 27 - 29 Sept 99. Univ of Free State, Bloemfontein.

14. GIS-based groundwater management: Paarl Municipality, Western Cape, South Africa. A Matoti, J Conrad and R Murray. Land resources Congress. 1998.

13. A GIS based quantification process for determination of the sustainable yield and utlisable potential of South African aquifers. Van der Voort I and Conrad J. IAH 1998 Congress - Las Vegas - Gambling with Groundwater.

12. An integrated approach to Aquifer Management : A case study from Atlantis, South Africa. Cave L, van der Voort I, Conrad J and Tredoux G. IAH 1998 Congress - Las Vegas - Gambling with Groundwater.

11. An investigation into a GIS based methodology to determine the sustainable exploitability of South African aquifers. Conrad J, van der Voort I and Jones S. WISA 1998 -Cape Town May 1998

10. Contamination of Groundwater by Agricultural Activities in South Africa. Colvin C and Conrad J. IAH 1998 Conference - Melbourne - Groundwater : Sustainable Solutions

9. Identifying potential areas in the Western Cape Province suitable for developing a regional waste disposal site. Conrad J. 1997 Geographical Information Management Systems Conference - Gauteng - South Africa.

8. The application of Geographical Information Systems to groundwater modelling for addressing environmental impact assessment assessments. Case study: the proposed Saldanha Steel Plant. Conrad, J.E, and Weaver, J.M.C., 1996. Published in the Proceedings: WISA May 1996.

7. Using Geographical Information Systems for graphical presentation of environmental impact assessment results. Engelbrecht, J.F.P., Conrad, J.E. and Tredoux, G., 1996. Published in the Proceedings: WISA May 1996.

6. The drought relief potential of the Nyamandhlovu Aquifer evaluated using GIS, Satellite Imagery and Groundwater Models. Conrad, J. E. And Weaver, J. M. C., 1996. Paper submitted to the conference "The application of Remote Sensing and GIS in Environmental and Natural Resource Assessment in Africa" March 15 - 22, 1996.

5. Modelling the risk of nitrate leaching at the aquifer scale with field enhanced GIS data of soil properties relevant to recharge. Conrad, J.E, Gorres, J., and Gold, A. 1995. Published in Conference Proceedings "Groundwater 1995. Groundwater Recharge and rural water supply". 26 - 28 Sept 1995

4. Incorporating Spatial Variability into GIS to estimate aquifer-scale leaching distribution. Gorres, J., Gold, A. J., and Conrad, J.E., 1994. Conference title: Applications of GIS to the modelling of non-point source pollutants in the vadose zone. 1995 Bouyoucos Conference. 1 - 3 May 1995, Riverside California.

3. Modelling nitrate leaching at the aquifer scale using field enhanced GIS coverages. Gorres, J., Gold, A. J., and Conrad, J.E., 1994. Proceedings of the American Society of Agricultural Engineers (ASAE) International Winter Meeting. Atlanta, Georgia, 13 - 16 Dec 1994.

2. Emergency assessment of groundwater resources within Bulawayo, Zimbabwe. Weaver, J. M. C., Conrad, J., and Engelbrecht, J. P. F, 1993. Published in the Proceedings "Africa needs groundwater" 6 - 8 September 1993, University of Witwatersrand, South Africa.

1. Valley calcretes: another Karoo groundwater exploration target. Weaver, J. M. C., Conrad, J., and Eskes, S. J. T, 1993. Published in the Proceedings "Africa needs groundwater" 6 - 8 September 1993, University of Witwatersrand, South Africa.

Conference presentations: by J. Conrad

17. Conrad, J.E., Pienaar, H., and Wentzel, J., 2005. Resource Directed Measures - Policies, Implementation and Lessons learnt from the northern Sandveld, Western Cape, South Africa. An oral paper presented by J. Conrad at the Biennial Groundwater Conference 2005, 7 - 9 March 2005, CSIR International Convention Centre, Pretoria, South Africa.

16. Conrad, J, Nel, J., and Wentzel J., 2004. The challenges and implications of assessing groundwater recharge: A case study on the northern Sandveld, Western Cape, South Africa. Presented by J. Conrad at WISA 2004 - The Water Institute of Southern Africa's Biennial Conference, Cape Town International Convention Centre, 2 - 6 May 2004.

15. Conrad, J., Adams, S and Titus, R., (2003). GIS based assessment of groundwater recharge in the fractured rocks of Namaqualand, South Africa. Presented by J. Conrad at the IAH2003 Congress: Groundwater in Fractured Rocks - Prague, Czech Republic, 15 - 19 September 2003.

14. Conrad, J.E., Adams, S., R. Titus and R. Knight, (2002). GIS and RS based determination of groundwater recharge in arid Namaqualand. National Spatial Information Framework (NSIF) Conference, "GIS, GPS and remote sensing in the future", Cape Town 24th October 2002.

13. Conrad, J., and Girman, J. Information Systems for Integrated Water Resource Management (2002). Groundwater Division, Western Cape Conference: Tales of a Hidden Treasure; Somerset West, 16th Sept 2002.

12. Conrad, J, and van der Voort, I (2000). Classification of groundwater resources under the South African National Water Act. Conference proceedings. IAH2000 Congress, Cape Town, 27 Nov. to 1 Dec. 2000.

11. Conrad, J. E. and van der Voort, I (2000). Classifying groundwater under the National Water Act: A case study. Conference proceedings (in press). Water Institute of South Africa (WISA) 2000, Sun City, 28 May - 1 June 2000.

10. Conrad, J.E., Hughes, S. and van der Voort, I. (2000). The new National Water Act: A case study on the applicability of commercial multi-spectral satellite data for determining the Groundwater Reserve. Conference proceedings (in press): 28th International Symposium on Remote Sensing of Environment, Cape Town 27 - 31 March, 2000.

9. The application of GIS in assessing groundwater contamination susceptibility to potential point source pollution, Conrad, J., 1999. 14th International Corrosion Congress, Sept 27 to Oct 1, 1999, Cape Town, South Africa.

8. A procedure for using Land Type data to derive qualitative contaminant attenuation maps, Sililo, O. and Conrad, J., 1999. IAH99, 6 - 10 Sept., Bratislava, Slovakia.

7. Methaemoglobinaemia as a result of bottle feeding by HIV+ mothers in South Africa, Colvin, C., 1999. IAH99, 6 - 10 Sept., Bratislava, Slovakia.

6. Contamination of Groundwater by Agricultural Activities in South Africa. Colvin C and Conrad J. IAH 1998 Conference - Melbourne - Groundwater : Sustainable Solutions

5. Identifying potential areas in the Western Cape Province suitable for developing a regional waste disposal site. Conrad J. 1997 Geographical Information Management Systems Conference - Gauteng - South Africa.

4. The determination of risk areas for potential sinkhole formation, using GIS, J Conrad, 1996. Conference: GIMS96 - Geo-information Management in Africa Conference, Oct 30 - Nov 1st 1996.

3. The application of Geographical Information Systems to groundwater modelling for addressing environmental impact assessment assessments. Case study: the proposed Saldanha Steel Plant. Conrad, J.E, and Weaver, J.M.C., 1996. Published in the Proceedings: WISA96. Port Elizabeth , South Africa. 20 - 23 May 1996.

2. Modelling the risk of nitrate leaching at the aquifer scale with field enhanced GIS data of soil properties relevant to recharge. Conrad, J.E, Gorres, J., and Gold, A. 1995. Groundwater 1995. Midrand, South Africa. 26 - 28 Sept 1995

1. Modelling nitrate leaching at the aquifer scale using field enhanced GIS coverages. Gorres, J., Gold, A. J., and Conrad, J.E., 1994. NE Arc/Info Conference Cape Cod - USA 10 - 13 Oct 1994.