SCIENTIFIC PAPERS

Dylan Blake

Conference Papers

1. Hartnady, C. J. H., Hay, E. R., Riemann, K., Blake, D. and Holmes, J. C. (2018). Table Mountain Group aquifers as a long-term resilience buffer against drought and climate change in the Western Cape, South Africa. Geocongress 2018, Johannesburg, South Africa, 2018.

2. Blake, D., Riemann, K., Jack, S. O., Botha, F. S., Weidemann, R. V., Wise, E. A. and Mndaweni, S. (2017). Groundwater resource assessment of the Malmani Subgroup dolomites within the Olifants River Water Supply Scheme. 15th South African Groundwater Division Conference, Stellenbosch, South Africa, 2017.

3. McGibbon, D. C., Blake, D., Riemann, K., Petschnig, P. and Towers, L. C. (2017). Hydrochemical analysis of groundwater within the Danakil Depression, northern Ethiopia. 15th South African Groundwater Division Conference, Stellenbosch, South Africa, 2017.

4. Molzen, G. M., Hay, E. R., McGibbon, D. C. and Blake, D. (2017). Groundwater augmentation for housing estate water supply, implementation and legal use. 15th South African Groundwater Division Conference, Stellenbosch, South Africa, 2017.

5. Hartnady, C. J. H., Hartnady, M. I. H., Wise, E. A., Blake, D., McGibbon, D. C. and Hay, E. R. (2017). Litho-tectonic mapping of the North Afar region from Sentinel-2A multispectral imagery and ALOS AW3D30 digital elevation data: Controls on Danakil-Nubia plate motion between the Erta’Ale ridge and the Gulf of Zula. European Geosciences Union General Assembly, Vienna, Austria, 2017.

6. Blake, D., Hartnady, C. J. H., Hartnady, M. I. H., Hay, E. R. and Botha, F. S. (2016). Groundwater resources of the Danakil Depression (northeastern Ethiopia) – hydrogeology in the hottest place on Earth. 35th International Geological Congress, Cape Town, South Africa, 2016.

7. McGibbon, D. C., Hartnady, C. J. H., Riemann, K. and Blake, D. (2016). Groundwater resource assessment of the deep confined Peninsula Aquifer in Blossoms (Oudtshoorn), Western Cape, South Africa. 35th International Geological Congress, Cape Town, South Africa, 2016.

8. Blake, D. (2015). Cadmium contamination of groundwater in South Africa – The potential hazard of phosphate fertilizers. 14th South African Groundwater Division Conference, Muldersdrift, South Africa, 2015.

9. Blake, D., Hartnady, C. J. H., McGibbon, D. C., Hartnady, M. I. H. and Molzen, G. A. (2015). Oudtshoorn Groundwater Project: Exploratory drilling results from the Blossoms Wellfield. Poster exhibited at the 14th South African Groundwater Division Conference, Muldersdrift, South Africa, 2015.

10. McGibbon, D. C., Hartnady, C. J. H., Riemann, K. and Blake, D. (2015). Flow test analysis and monitoring of the deep confined Peninsula Aquifer in Blossoms (Oudtshoorn), Western Cape, South Africa. 14th South African Groundwater Division Conference, Muldersdrift, South Africa, 2015.

11. Hay, E. R., Blake, D. and Hartnady, C. J. H. (2013). A future Oudtshoorn groundwater heritage trail. Geoheritage Conference, Oudtshoorn, South Africa, 2013.

12. Blake, D., Hartnady, C. J. H. and Riemann, K. Groundwater exploration at Nuweberg near Grabouw, for the City of Cape Town Table Mountain Group Aquifer Project. 3rd Regional Conference of the Southern African Young Water Professionals, Stellenbosch, South Africa, 2013.

13. Blake, D. and Hartnady, C. J. H. (2013). Shale gas exploration in South Africa and possible future groundwater quality and quantity issues. Shale Gas Southern Africa, Cape Town, South Africa, 2013.

14. Hartnady, C. J. H. and Blake, D. (2012). Karoo shale gas development: Environmental impacts and geophysical risks. Geological Society of South Africa Energy Options Conference, Johannesburg, South Africa, 2012.

15. Blake, D., Hartnady, C. J. H., Isaacs, G. and Chimboza, N. (2012). Rapid qualitative sea level rise risk assessment for coastal district municipalities of the Western Cape, South Africa. 1st SA-GEO Symposium, Cape Town, South Africa, 2012.

16. Blake, D. and Hartnady, C. J. H. (2011a). Shale gas exploration in South Africa and possible future groundwater quality and quantity issues. Geosynthesis, Cape Town, South Africa, 2011.

17. Blake, D. and Hartnady, C. J. H. (2011b). Shale gas exploration in South Africa and possible future groundwater quality and quantity issues. 12th South African Groundwater Division Conference, Pretoria, South Africa, 2011.

18. Blake, D., Hartnady, C. J. H. and Riemann, K. (2011a). Exploratory drilling results from the Table Mountain Group aquifers, southwestern Cape, South Africa. 23rd Colloquium of African Geology, Johannesburg, South Africa, 2011.

19. Blake, D., Hartnady, C. J. H. and Riemann, K. (2011b). Exploratory drilling results from the Table Mountain Group aquifers, southwestern Cape, South Africa. Geosynthesis, Cape Town, South Africa, 2011.

20. Blake, D., Hartnady, C. J. H. and Riemann, K. (2011c). Exploratory drilling results from the Table Mountain Group aquifers, southwestern Cape, South Africa. 12th South African Groundwater Division Conference, Pretoria, South Africa, 2011.

21. Blake, D., Hartnady, C. J. H., Chimboza, N. C., Laidler, D. and Isaacs, G. (2011). Coastal hazard risk assessment for parts of the Western Cape, South Africa. 23rd Colloquium of African Geology, Johannesburg, South Africa, 2011.

22. Blake, D., Hartnady, C. J. H. and Chimboza, N. C. (2010). Rapid coastal hazard risk assessment for the coastline administered by the City of Cape Town. “Urban risk reduction: building resilient cities, addressing urban disaster risk” – Disaster Management Conference for Africa 2010, Jeffreys Bay, South Africa, 2010.

23. Blake, D., Laidler, D. and Isaacs, G. (2010). Sea level rise risk assessment for the Eden District Municipality coastline. “Urban risk reduction: building resilient cities, addressing urban disaster risk” – Disaster Management Conference for Africa 2010, Jeffreys Bay, South Africa, 2010.

24. Blake, D., Mlisa, A. and Hartnady, C. J. H. (2010). Large scale quantification of aquifer storage and volumes from the Peninsula and Skurweberg Formations in the southwestern Cape. 1st Regional Conference of the Southern African Young Water Professionals. Pretoria, South Africa, 2010.

25. Blake, D., Mlisa, A. and Hartnady, C. J. H. (2009). Large scale quantification of aquifer storage and volumes from the Peninsula and Skurweberg Formations in the southwestern Cape. 11th South African Groundwater Division Conference. Cape Town, South Africa, 2009.

26. Blake, D. and Riemann, K. (2009). The importance of geological understanding in local groundwater development: Case studies from the Overberg region, Western Cape. 11th South African Groundwater Division Conference. Cape Town, South Africa, 2009.

27. Blake, D., Hartnady, C. J. H., Chimboza, N. C. and Kuhudzai, A. T. (2009). Coastal hazard risk assessment for the coastline administered by the City of Cape Town. AfricaGIS 2009 International Conference. Kampala, Uganda, 2009.

28. Blake, D., Hartnady, C. J. H., Mlisa, A. and Thompson, I. (2009). Large scale quantification of aquifer storage and volumes: Case studies from the Berg WAAS. Poster exhibited at the International Conference on Implementing Environmental Water Allocations. Port Elizabeth, South Africa, 2009.

Journal Articles

1. Blake, D., Mlisa, A. and Hartnady, C. J. H. (2010). Large scale quantification of aquifer storage and volumes from the Peninsula and Skurweberg Formations in the southwestern Cape. Water SA, 36 (2), 177-184.

Books/WRC Reports

1. Blake, D. (2014). Non-point Source Trace Metal Contamination of South African Aquifers – Role of Fertilizers in Trace Metal (Specifically Cadmium) Contamination of Groundwater. WRC Project K8/1031/1, 53pp.

2. Hay, E. R., Hay, P., D’Or, G, Lee, P., Blake, D. and Conradie, S. (2014). Capacity Building for Climate Change Adaptation and Disaster Risk Reduction in Rural Communities: Tsengiwe, Eastern Cape. Water Research Commission Report No. 2126/1/14.

3. Hay, E. R., Hartnady, C. J. H. and Blake, D. (2011). Disaster risk reduction and adaptation to climate change. In: Strachan, J. and Vigilance, C. (Eds.), Integrating sustainable development into national frameworks. Policy approaches for key sectors in small states. Commonwealth Secretariat, London, United Kingdom, 17-36.

4. Hay, E. R., Hay, P., Mlisa, A., Blake, D., Imrie, S. and Goldberg, K. (2011). Investigating the social vulnerability of people and their livelihoods and their response to water infrastructure: A risk-based methodology to assess social vulnerability in the context of water infrastructure. Water Research Commission Report No. 1888/1/11.

5. Colvin, C., Riemann, K., Brown, C., Le Maitre, D., Mlisa, A., Blake, D., Aston, T., Maherry, A., Engelbrecht, J., Pemberton, C, Magoba, R., Soltau, L. and Prinsloo, E. (2009). Ecological and environmental impacts of large-scale groundwater development in the Table Mountain Group (TMG) aquifer system. Water Research Commission Report No. 1327/1/08.

6. Riemann, K., and Blake, D. (2009). Groundwater Reserve Determination for current and potential Wellfield Development of TMG Aquifers. The Undertaking of the Rapid Reserve Determination for the Oudtshoorn Municipality (WRC Project K8/871/1). Water Research Commission Report No. KV 236/10.

Rowena Hay

Publications

UN/ISDR Africa and Hay, E.R. (2004).  Water & Risk in Africa.  A School’s Guide.

—–, and Hay, E.R. (2004).  Water & Risk in Africa.  A Community Leader’s Guide. 

—–, and Hay, E.R. (2004).  Land Use, Disaster Risks & Rewards.  A Community Leader’s Guide.

—–, and Hay, E.R. (2004).  Land Use, Disaster Risks & Rewards.  A School’s Guide.

—–,and Hay, E.R. (2005). Environmental Protection & Disaster Risk Reduction. A Community Leader’s Guide 

—–, and Hay, E.R. (2005).  Environmental Protection & Disaster Risk Reduction. .  A Schools Guide

—–, and Hay, E.R. (2006).  Poverty Reduction & Disaster Risk Reduction.  A Community Leader’s Guide 

—–, and Hay, E.R. (2006).  Poverty Reduction & Disaster Risk Reduction. .  A Schools Guide

—–, and Hay, E.R. (2007).  Gender and Disaster Risk Reduction in Africa. A community Leader’s Guide

Hay, E.R., and Flemming, B.W., (1988).  Seasonal Storm control over nearshore sediment dispersal on the Southeast African Continental shelf.  Eos (Trans. Am. Geophys.Un.) 

—–, Hurlimen, W., Job, D., Sesels, G. and Wacker, C., (1987). Hydrologic modelling of the Chalk River Block: Sensitivity and Uncertainty Analysis.  Proceedings of Hydrocoin Workshop No. 7, Paris, France, Nov 16-18, 1987.

Flemming, B.W., and Hay, E.R. (1987), Sediment Distribution and Dynamics on the Natal Continental Shelf.  In: Schuman, E.H., (ed), Coastal Ocean Studies of Natal, South Africa.  Lecture notes: Coastal Estuary Studies 17. Springer-Verlag.

Hay, E.R., (1984). Sediment dynamics on the continental shelf between Durban and Port St. John’s (Southeast African Continental Margin).  Joint Geological Survey / University Cape Town Marine Geoscience Unit Bull. 13, 238 pp.

Flemming, B.W. and Hay, E.R., (1983).  On the bulk density of South African Marine sands.  Trans. Geol. Soc. S. Afr.

Chapters in books

Hay, E.R., Muller, S, Riemann, KR (in prep) Hermanus Water Resource Development and Management Programme A Strategy to reduce Social Vulnerability and increase Environmental Resilience 

Hay, E.R., Hartnady, C. and Blake, D., (in press). Disaster Risk Reduction and Adaptation to Climate Change.  Commonwealth Secretariat.

Hay, E.R., and Hartnady, C.J.H  (2009) Contribution In: Brown, C. and Magoba, R. (eds) “Rivers and Wetlands of Cape Town: Caring for our rich Aquatic Heritage” Water Research Commission K5/1691, 402pp. 

Harris, R.W. and Hay, E.R., 2001.  The Role of Remote Sensing in Exploration for Deep Artesian Groundwater within the Table Mountain Group.  In:  Parsons, R. and Pietersen, K. (eds).  Handbook of Table Mountain Group Hydrogeology. 

Hartnady, C.J.H., and Hay, E.R., 2001.  Use of structural geology and remote sensing in hydrogeologial exploration of the Olifants and Doring River Catchments.  In:  Parsons, R. and Pietersen, K. (eds).  Handbook of Table Mountain Group Hydrogeology.  

—–, and Hay, E.R., 2001.  Towards “map-centric” simulation modelling of TMG recharge.  In:  Parsons, R. and Pietersen, K. (eds).  Handbook of Table Mountain Group Hydrogeology.  

—–, and Hay, E.R., 2001.  Potential of TMG Aquifers and integration into catchment water management.  In:  Parsons, R. and Pietersen, K. (eds).  Handbook of Table Mountain Group Hydrogeology.  

—–, and Hay, E.R., 2001.  Fracture system and attribute studies in TMG groundwater target generation.  In:  Parsons, R. and Pietersen, K. (eds).  Handbook of Table Mountain Group Hydrogeology. 

—–, and Hay, E.R., 2001.  Boschkloof groundwater discovery.  In:  Parsons, R. and Pietersen, K. (eds).  Handbook of Table Mountain Group Hydrogeology. 

—–, and Hay, E.R., 2001.  Experimental Deep Drilling at Blikhuis, Olifants River valley, Western Cape:  Motivation, Setting and Current Progress.  In:  Parsons, R. and Pietersen, K. (eds).  Handbook of Table Mountain Group Hydrogeology. 

—–, and Hay, E.R., 2001.  Groundwater prospecting on Verlorenvalley 334, between Ceres and Touws River, Western Cape, South Africa.  In:  Parsons, R. and Pietersen, K. (eds).  Handbook of Table Mountain Group Hydrogeology.  

Selected other publications and unpublished reports

Hay, E.R, Imrie S, Riemann K, Goldberg K, Law S, Basson J, (2010). Department of Environmental Affairs and Development Planning Western Cape, Indicator Development for Development of a Monitoring and Evaluation System for the Western Cape Climate Change Response Strategy and Action Plan.

—–, E.R., Galley, E., Hartnady, C. (2009).  City of Cape Town, Disaster Risk Assessment.  Aquifer Hazards

—–, Hartnady, C., Seyler, H and Riemann, K. (in prep) The Assessment of Water Availability in the Berg Catchment (WMA 19) by means of Water Resource Related Models. Groundwater Model Report Volume 1 – Overview of Methodology and Results

—–, Riemann, K.  (2009). Development of Reconciliation Strategy for All Towns in the Southern Sub-Region.  Inception Report

—–, and Seyler, H. (2008). The Assessment of Water Availability in the Berg Catchment (WMA 19) by means of Water Resource Related Models. Groundwater Model Report Volume 5 – Cape Flats Aquifer Model 

 —–, and Phiri, M.A.R. (2008). Situation Analysis of Disaster Risk Management Programmes and Practices prepared for World Bank Global Facility for Disaster Reduction and Recovery Track II: Malawi (2 volumes)

—–, Riemann, K. (2007). Groundwater contribution to: Western Cape Water Supply System:  Reconciliation Strategy Study 

—–, (2006). Groundwater Contribution to: Internal Strategic Perspective for Olifants-Doring Water Management Area

—–, and ISDR. (2006) ICLEI World Congress 2006 – Out of Africa:  Local solutions to global challenges.  

Statement for Session R1 “Managing Disaster Risk and Building Local resilience”.  Congress theme “Resilient communities and cities.” in ICLEI World Congress 2006 – Out of Africa:  Local solutions to global challenges.  Cape Town.

—–, et al., (2006) Feasibility study for raising of the Clanwilliam Dam, Western Cape.  Groundwater Resource evaluation report.  (July 2006).

—–, Hartnady, C.J.H. and Riemann, K. (2005)  Feasibility Study for the Raising of the Clanwilliam Dam, Western Cape.  Hydrogeological Scoping Report.  (July 2005)  24 pp.

—–, (2005) Groundwater Contribution to: Internal Strategic Perspective for the Berg Water Management Area.  Department of Water Affairs. 

—–, (2005) Groundwater Contribution to: Internal Strategic Perspective for Amatola to the Kei Water Management Area.  Department of Water Affairs.

—–, (2005) Groundwater Contribution to: Internal Strategic Perspective for Mzimvubu to the Mhlatuze Water Management Area. Department of Water Affairs.

—–, Riemann, K. and Hartnady, C.J.H. (2005) Oudtshoorn Agricultural Water Feasibility Study.  Phase 1.  Synoptic indication of the potential artesian/underground water in the study area and also in the adjacent areas (September 2005) 51pp.

—–, Riemann, K and Mlisa, A and Hartnady, C.J.H.  (2005)  Assessment of Water Availability in the Berg Catchment (WMA 19) by means of Water Resource Related Models.  Inception Report.  Groundwater Models.  (June 2005)  88 pp. 

—–, Hartnady, C.J.H. and Riemann, K. and Groenewald, L. and Paige, A.  (2005)  Deep Artesian Groundwater for Oudtshoorn Municipal Supply.  Target Generation & Borehole / Well field siting using Structural Geology and Geophysical Methods.  Phase D of DAGEOS project.  (May 2005)

—–, Hartnady, C.J.H. and Riemann, K. (2005) Preliminary assessment of Amcoal Report on the proposed Heidelberg Opencast Colliery.

—–, Riemann, K. and Brown, K. and Colvin, C. and Luger, M.  (2004)  TMG Aquifer Feasibility Study and Pilot Project.  Ecological and Environmental Report.  (December 2004)

—–, (2004) Groundwater Contribution to: Internal Strategic Perspective for the Fish to Sundays portion of the Fish to Tsitsikamma Water Management Area (WMA).  Department of Water Affairs.

—–, (2004) Groundwater Contribution to: Internal Strategic Perspective for Breede Water Management Area. Department of Water Affairs. 

—–, Riemann, K. and Groenewald, L.  (2004)  Development and licensing of a groundwater supply for a golf course development on farm Middelberg 643, Stanford.  Pump testing of production borehole.  (November 2004)

—–, (2003) Groundwater Contribution to: Internal Strategic Perspective for Gouritz Water Management Area. Department of Water Affairs.

—–, and Hartnady, C.J.H.  (2003)  Western Cape Olifants Doring Study (WODRIS).  Phase B.  Subsurface Water.  Hydrogeological Reconnaissance Report.  (March 2003)

—–, and Hartnady, C.J.H.  (2002)  Western Cape Olifants Doring Study (WODRIS).  Phase B.  Hydrogeological Reconnaisance Report.  (June 2002)

—–,  and Yibas, B.  (2002)  Wortelgat environmental impact assessment study:  geological and hydrological component.  (March 2002)

—–, and Hartnady, C.J.H.  (2002)  Western Cape Olifants Doring Study (WODRIS).  Phase B.  Hydrogeological Reconnaisance Report.  (February 2002)

—–, and Hartnady, C.J.H.  (2001)  Cape Flats Aquifer Review.  Umvoto Report Nos 095A and 095B.  (February 2001).

—–, and Hartnady, C.J.H., (2000).  Reconnaissance Investigation into the Development and Utilisation of Table Mountain Group Artesian Groundwater, using the E10 Catchment as a Pilot Study Area “CAGE” Project.  

—–, and Hartnady, C.J.H. (2000).  Deep Artesian Groundwater Exploration in the Greater Oudtshoorn District for Bulk Water Supply (DAGEOS) – Inception Report.  Umvoto Report No. UMV086. (April 2000).  32 pp.

—–, and Hartnady, C.J.H., (1999).  The TMG 2000 Project:  Hydrogeological feasibility study for Groundwater alternatives to the Skuifraam Dam schemes.  Umvoto Report No.UMV188 (October 1999).  

—–, (1999).  Preliminary Assessment of Groundwater Potential of the Stanford Aquifer and Possible Impact of Abstraction of Boreholes on the Stanford Eye.  Umvoto Report No.  UMV062 (October 1999). 28 pp. 

—–, (1999).  Comments on the Model Evaluation in the Light of Additional Hydrogeological Investigations at New Glen Heatlie (February – April 1999) by GCS and SRK.  Umvoto Report No.  UMV056 (June 1999) 15 pp.

—–, (1999).  Hydrochemistry of the Groundwater in the Greater Stanford Area – Addendum Report.  Umvoto Report No.  UMV051 (June 1999) 3 pp.

—–, Hartnady, C.J.H. and Amantia, A., (1999).  Verlorenvalley Farm Water Resource Investigation.  Umvoto Report No.  UMV046 (April 1999) to Newfarmers Development Company (Pty) Ltd.  54 pp.

—–, Hartnady, C.J.H. and Amantia, A., (1999).  Verlorenvalley Farm Water Resource Investigation – Laymans Summary.  Umvoto Report No.  UMV047 (April 1999) to Newfarmers Development Company (Pty) Ltd.  12 pp.

—–, Hartnady, C.J.H. and Amantia, A., (1999).  Verlorenvalley Farm Water Resource Investigation – Volume 2 – Figures – Final Report.  Umvoto Report No. UMV048 (April 1999) to Newfarmers Development Company (Pty) Ltd.  

—–, Hartnady, C.J.H. and Amantia, A., (1999). Verlorenvalley Farm Water Resource Investigation – Final Report – Volume 3 – Appendices.  Umvoto Report No.  UMV049 (April 1999) to Newfarmers Development Company (Pty) Ltd.  58 pp.

—–, (1999).  Groundwater Regime and Aquifer Management in the Stanford Area – Laymans Summary.  Umvoto Report No.  UMV052 6 pp.

—–, (1999).  Boschkloof Well Field: Environmental Impact Assessment: Groundwater Component.  Umvoto Report No.  UV040-A (March 1999) 7 pp.

—–, and Hartnady, C.J.H., (1999).  The Groundwater Potential of the Potberg, near Witsand, Western Cape Province Report.  Umvoto Report No.  UMV043 (March 1999) to Liebenberg and Stander and Overberg Water.  27pp.

—–, (1998).  Boschkloof Well Field : Estimation of the Sustainable Yield and Monitoring Recommendations.  Umvoto Report No.  UMV040 (December 1998).

—–, and Hartnady, C.J.H., (1998).  De Duine: Project Promotion (Pty) Ltd Umvoto Report No.  UMV035 (November 1998) 

—–, (1998).  Evaluation of Groundwater Flow Models Determining the Source of Water being Pumped by Denau Boedery:  Figures.  Umvoto Report No.  UMV034 (October 1998) 14 pp.

—–, and Hartnady, C.J.H., (1998).  Addendum to Hydrogeological Study for the Proposed Verlorenvlei Coastal Game Park:  Additional and Repeat Groundwater Sampling, Analysis and Interpretation.  Umvoto Report No.  UMV032 (September 1998) 

—–, and Hartnady, C.J.H., (1998).  Hydrogeological Feasibility Study for the Proposed Verlorenvlei Coastal Game Park.  Umvoto Report No.  UMV031 (July 1998).

—–, and Hartnady, C.J.H., (1998).  Groundwater supply to Citrusdal Municipality:  Interim Report – Drilling, Pump Test Data and Planning Information.  Umvoto Report No.  UMV015 (April 1998) 

—–, and Hartnady, C.J.H., (1997).  Hydrogeology and Groundwater Resource Potential of the Olifants/Doring River Basin, Western and Northern Cape Provinces.  Umvoto Report No.  UMV028 (June – September 1997) to Ninham Shand Inc. and BKS (Pty) Ltd.  29 pp.

—–, (1997).  Drilling of Exploration and Production Boreholes at Citrusdal – First Draft – Volume A.  Umvoto Report No.  UMV078 25 pp.

—–, and Hartnady, C.J.H. and Bradshaw, R (1996).  Interim Report on Geotechnical, Hydrological and Water Quality Assessment of the Cape Town Olympic Park, Wingfield Site – First Draft.  Umvoto Report No.  UMV026 (December 1996) 27 pp.

—–, (1996).  Preliminary Geotechnical Investigations.  Umvoto Report No.  UMV076 to Gencor Limited, Zincstud Project – Joint Venture ZLH.  14 pp.

—–, (1996).  Estimate of Cost for Feasibility Study to Establish Budget Price.  Estimate for Non-Ferrous metal and General Cargo Terminal at Port Daugavdriva in Latvia – Joint Venture with ZLH.  Umvoto Report No.  UMV077 (June 1996) 37 pp.

—–, and Hartnady, C.J.H., (1996).  Report on Geophysical Investigation at the Plettenberg Bay Waste Site.  Umvoto Report No.  UMV006 (May 1996) 6 pp.

—–, and Hartnady, C.J.H., (1996).  Drilling Report and Recommendations Belvidere Estate, Knysna.  Umvoto Report No.  UMV022 (February 1996) 10 pp.

—–, and Hartnady, C.J.H., (1996).  Belvidere Estate Local Council – Geohydrological Feasibility Study.  Umvoto Report No. UMV023 (February 1996) 26 pp.

—–, and Hartnady, C.J.H., (1995).  Geological Overview and Preliminary Hydrocensus in the Piesang River Catchment – Plettenberg Bay.  Umvoto Report No.  UMV005 (September 1995) to B.S Bergman and S. Cape Regional Services.  16 pp.

—–, and Hartnady, C.J.H., (1995).  Preliminary Geohydrological Assessment of Groundwater Reports Relevant to the Proposed Development of the Saldanha Steel Plant.  Umvoto Report No.  UMV019 (August 1995) 10 pp.

—–, and Hartnady, C.J.H., (1995).  Addendum to the Hydrogeological Investigation of the Citrusdal Municipal District.  Umvoto Report No.  UMV014 (July 1995) 8 pp.

—–, (1994).  Geophysical Investigation for a Class II Waste Site – Gansvlei Area.  Umvoto Report No. UMV001.

—–, (1994).  Drilling Report – Gansvlei.  Umvoto Report No. UMV003.

—–, and Hartnady, C.J.H., (1995).  Hydrogeological Investigation and Borehole Siting in the Citrusdal Municipal District.  Umvoto Report No.  UMV013 (April 1995).

—–, (1993).  Likely Effects of Afforestation surrounding Wemmershoek Vlei.  Umvoto Report No. UMV017

—–, (1993).  Geological and Hydrogeological Investigation for Class II Domestic Waste Site – Gansvlei Area.  Umvoto Report No. UMV002.

—–, and Hartnady, C.J.H., (1993).  Steenberg Project – Preliminary Investigation of the Groundwater Potential – CSIR – Review

—–, (1992). Geological Investigation into Muizenberg Redevelopment Sites 1, 2 and 3 and Environs.  Umvoto Report No.  UMV016 (31 August 1992) 22 pp.

—–, (1981) A Stratigraphic and Sedimentological Analysis of Borehole Data from a portion of the Cape Flats Honours Thesis.  Umvoto Report No. 083.

Cadribo, E.R. and Umvoto Africa (2007).  Capacity Needs Assessment Report on Disaster Risk Management in the Kingdom of Lesotho

Hartnady, C., Blake, D. and Hay, E.R. (in prep).  City of Cape Town, Disaster Risk Assessment.  Geohazard Risk Assessment

—–, and Hay E.R., (Current).  Influence of Neotectonic Stress Systems on Fractured Rock Permeability in Southwestern Africa, with particular reference to fracture systems in the Table Mountain Group.  

—–, and Hay E.R., (2007) The Assessment of Water Availability in the Berg Catchment (WMA 19) by means of Water Resource Related Models. Groundwater Model Report Volume 3 – Regional Conceptual Model

—–, and Hay, E.R. and Riemann, K.  (2004). TMG Aquifer Feasibility Study and Pilot Project.  Hydrogeological Report.  (October 2004)

—– and Hay, E.R. (2002)  Groundwater prospecting on Verlorenvalley 334, between Ceres and Touws River, Western Cape.

Groenewald, L., Hartnady, C.J.H. and Hay, E.R. and Riemann, K.R.  (2004) TMG Aquifer Alliance.  City of Cape Town.  Table Mountain Group Aquifer Feasibility Study and Pilot Project.  Hydrocensus Report.  (October 2003 – May 2004)

—–, Hartnady, C.J.H. and Hay, E.R. (2003)  Short report on borehole siting at Theerivier, Groenvlei, Brakfontein and Maanskloof Farms.  (November 2003)

—–, Hartnady, C.J.H. and Hay, E.R. (2003)  Heldervue Estates.  Borehole Siting Report.  (October 2003)

Riemann, K., Hartnady, C., Hay E.R. and Mlisa, A. (2008) The Assessment of Water Availability in the Berg Catchment (WMA 19) by means of Water Resource Related Models. Groundwater Model Report Volume 4 – Regional Water Balance Model

—–, Blake, D., Hartnady, C. and Hay E.R. (2008) The Assessment of Water Availability in the Berg Catchment (WMA 19) by means of Water Resource Related Models. Groundwater Model Report Volume 7 – TMG Aquifer, Piketberg Model

—–, Blake, D., Hartnady, C. and Hay E.R. (2008) The Assessment of Water Availability in the Berg Catchment (WMA 19) by means of Water Resource Related Models. Groundwater Model Report Volume 8 – TMG Aquifer, Witzenberg-Nuy Model

—–, and Hay, E.R. (2008) Preliminary Groundwater Reserve Determination for current and potential Wellfield Developments of TMG Aquifers, Umvoto, Editor, Overstrand Municipality.  52 pp.

—–, Hay E.R. and Mlisa, A. (2007) The Assessment of Water Availability in the Berg Catchment (WMA 19) by means of Water Resource Related Models. Groundwater Model Report Volume 2 – Data Availability and Evaluation

—–, et al.(2006), Lukhanji regional water supply feasibility study.  Groundwater component. (January 2006)

—–, and Hay, E.R. (2005) Water resource development and management plan for the Greater Hermanus area.  Monitoring results of Gateway Wellfield monitoring programme.  April 2005 to September 2005.

—–. and Hay, E.R. and Cleaver. G. (2005) Water Source Development and Management Plan for the Greater Hermanus Area.  (February 2005)

—–, Groenewald, L. and Hay, E.R. (2005) Golf course development on Farm Middelberg 643, Stanford.  Sensitivity of Aquifer and Aquatic environment. 

Seyler, H., Hay E.R., Hartnady, C. and Groenewald, L. (2008) The Assessment of Water Availability in the Berg Catchment (WMA 19) by means of Water Resource Related Models. Groundwater Model Report Volume 6 – Langebaan Road and Elandsfontein Aquifer System Model

—–, Hay E.R., Hartnady, C., Riemann, K. (2008) The Assessment of Water Availability in the Berg Catchment (WMA 19) by means of Water Resource Related Models. Groundwater Model Report Volume 9 – Breede River Alluvium Aquifer Model

Luke Towers 

Conference Proceedings:

15th Biennial Ground Water Division Conference, 14 – 18 October 2017:

PUMP TEST ANALYSIS OF PRIMARY ALLUVIAL AQUIFERS AND THE INFLUENCE OF RIFT RELATED FAULTS IN THE DANAKIL DEPRESSION, NORTHERN ETHIOPIA

L.C. Towers, D.C. McGibbon, C.J.H. Hartnady and K. Riemann

Geological Society of South Africa GEOCONGRESS, 18-20 July 2018:

THE ATLANTIS WATER RESOURCE MANAGEMENT SCHEME – LESSONS IN RESILIENCE

L.C. Towers and E.R. Hay

Rui Hugman

International peer reviewed journals

Hugman, R., Stigter, T., Costa, L., & Monteiro, J. P. (2017). Numerical modelling assessment of climate-change impacts and mitigation measures on the Querença-Silves coastal aquifer (Algarve, Portugal). Hydrogeology Journal, 25(7). https://doi.org/10.1007/s10040-017-1594-0

Hugman, R., Stigter, T. Y., Monteiro, J. P., Costa, L., & Nunes, L. M. (2015). Modeling the spatial and temporal distribution of coastal groundwater discharge for different water use scenarios under epistemic uncertainty: case study in South Portugal. Environmental Earth Sciences, 73(6), 2657–2669. https://doi.org/10.1007/s12665-014-3709-4

Hugman, R., Stigter, T. Y., & Monteiro, J. P. (2013). The importance of temporal scale when optimising abstraction volumes for sustainable aquifer exploitation: A case study in semi-arid South Portugal. Journal of Hydrology, 490, 1–10. https://doi.org/10.1016/j.jhydrol.2013.02.053

Hugman, R., Stigter, T. Y., Monteiro, J. P., & Nunes, L. (2012). Influence of aquifer properties and the spatial and temporal distribution of recharge and abstraction on sustainable yields in semi-arid regions. Hydrological Processes, 26(18), 2791–2801. https://doi.org/10.1002/hyp.8353

Francés, A. P., Ramalho, E. C., Fernandes, J., Groen, M., Hugman, R., Khalil, M. A., … Monteiro Santos, F. A. (2015). Contributions of hydrogeophysics to the hydrogeological conceptual model of the Albufeira-Ribeira de Quarteira coastal aquifer in Algarve, Portugal. Hydrogeology Journal, 23(7), 1553–1572. https://doi.org/10.1007/s10040-015-1282-x

Salvador, N., Monteiro, J. P., Hugman, R., Stigter, T. Y., & Reis, E. (2012). Quantifying and modelling the contribution of streams that recharge the Querença-Silves aquifer in the south of Portugal. Natural Hazards and Earth System Science, 12(11), 3217–3227. https://doi.org/10.5194/nhess-12-3217-2012

Stigter, T. Y., Nunes, J. P., Pisani, B., Fakir, Y., Hugman, R., Li, Y., … El Himer, H. (2014). Comparative assessment of climate change and its impacts on three coastal aquifers in the Mediterranean. Regional Environmental Change, 14(S1), 41–56. https://doi.org/10.1007/s10113-012-0377-3

Stigter, T. Y., Varanda, M., Bento, S., Nunes, J. P., & Hugman, R. (2017). Combined Assessment of Climate Change and Socio-Economic Development as Drivers of Freshwater Availability in the South of Portugal. Water Resources Management, 31(2), 609–628. https://doi.org/10.1007/s11269-015-0994-y

 Chapters in books

Stigter, T., Monteiro, J., Nunes, L., Ribeiro, L., & Hugman, R. (2010). Regional spatial-temporal assessment of groundwater exploitation sustainability in the south of Portugal. In IAH Book Series (IAH Selected Papers) (p. 10). International Association of Hydrologists (IAH).

Presentations in international conferences

 Costa, L.; Hugman, R.; Monteiro, J.P.; Sapiano, M.; Schembri, M. (2017) Modelação Numérica Da Gestão De Recarga De Aquíferos Em Malta No Âmbito Do Projecto Marsol. 11.º Seminário sobre Águas Subterrâneas. Porto, 2 e 3 de março de 2017. ISEP. Associação Portuguesa dos Recursos Hídricos APRH. pp 91-94

Monteiro, J.P.; Hugman, R.; Costa, L.; Salvador, N. (2017) Controlo Hidrogeológico de Charcos Temporários Mediterrânicos – Ecossitemas Dependentes De Águas Subterrâneas na Costa Vicentina. 11.º Seminário sobre Águas Subterrâneas. Porto, 2 e 3 de março de 2017. ISEP. Associação Portuguesa dos Recursos Hídricos APRH. pp 103-106

Hugman, R., Stigter, T., Monteiro, J. P., & Costa, L. (2016). Modeling nitrate-contaminated groundwater discharge to the Ria Formosa coastal lagoon (Algarve, Portugal). In 15th Water-Rock Interaction International Symposium, WRI-15. Evora, Portugal: Elsevier Ltd.

Hugman, R., Viegas, J., Góis, A., Costa, L., Monteiro, J. P., & Stigter, T. Y. (2016). Re-Assessing Coastal Groundwater Management Policy in the Algarve : Estimating the Potential for Seawater Intrusion. In D. Ducci & M. Petitta (Eds.), Aqua 2015 – 42nd IAH Congress (Vol. 39, p. 620). Rome, Italy: Italian Geological Society.https://doi.org/10.3301/ROL.2016.63

Monteiro, J.P.; Martins, R.; Costa, L.; Hugman, R.; Nunes, L.M.; Alcobia, S.; Bettencourt, P. (2015) Estimativa da Recarga Anual Média dos Aqüíferos da Bacia Hidrográfica do Rio São Francisco (Brasil) Recorrendo a Dois Métodos Independentes. 12º SILUSBA – Simpósio de Hidráulica e Recursos Hídricos dos Países de Língua Portuguesa. “Gestão da Água e do Território: Perspectivando Sinergias”. Associação Brasileira de Recursos Hídricos (ABRH)/ Associação Portuguesa de Recursos Hídricos (APRH). Brasília. 10pp

Hugman, R., Stigter, T., & Monteiro, J. P. (2015). Potential Offshore Submarine Groundwater in the Albufeira-Ribeira de Quarteira aquifer system ( Algarve , Portugal ). In EGU General Assembly 2015 (Vol. 17, p. 1). Vienna, Austria.

Hugman, R., Stigter, T., & Monteiro, J. P. (2014). Integrating improved conceptual knowledge into a 3-D variable density numerical model for a heavily exploited coastal aquifer with submarine spring discharge in South Portugal. In H. Wiederhold, J. Michaelsen, K. Hinsby, & B. Nommensen (Eds.), 23rd Salt Water Intrusion Meeting (pp. 185–188). Husum, Germany.

Hugman, R.; Monteiro, J.P.; Stigter, T. (2014) Desenvolvimento de um modelo tridimensional de escoamento e transporte dos sistemas aquíferos Albufeira-Ribeira de Quarteira e Quarteira – Algarve. Congreso Ibérico de las Aguas Subterráneas. Congreso auspiciado por el Grupo Español de la Asociación Internacional de Hidrogeólogos · Universitat Politècnica de València · 8 al 10 de septiembre de 2014 [cias2014]

Costa, L.; Hugman, R.; Monteiro, J.P. (2014) Modelação da Dispersão e Tempo de Residência de Traçadores no Fluxo Subterrâneo no Aquífero Querença-Silves, Sul De Portugal. Congreso Ibérico de las Aguas Subterráneas. Congreso auspiciado por el Grupo Español de la Asociación Internacional de Hidrogeólogos · Universitat Politècnica de València · 8 al 10 de septiembre de 2014 [cias2014].

Costa, L., Hugman, R., & Monteiro, J. P. (2013). Modelação da Descarga de Águas Subterrâneas dos Aquíferos de Abufeira-Ribeira De Quarteira e de Quarteira (Algarve,Portugal). In 9o Seminário sobre Águas Subterraneas da APRH (Vol. 7, pp. 82–85). Lisbon.

Costa, L., Monteiro, J. P., Oliveira, M., Mota, R., Lobo-ferreira, J. P., Martins de Carvalho, J., … Hugman, R. (2015). Modelling Contributions of the Local and Regional Groundwater Flow of Managed Aquifer Recharge Activities at Querença-Silves Aquifer System . In EGU General Assembly 2015 (Vol. 17, p. 11930).

Francés, A. P., Ramalho, E. C., Fernandes, J., Groen, M., Plaen, J. De, Hugman, R., … Santos, F. A. M. (2014). Hydrogeophysics contribution to the development of hydrogeological conceptual model of coastal aquifers – Albufeira-Ribeira de Quarteira aquifer case study. In 8a Assembleia Luso Espanhola de Geodesia e Geofisica (pp. 533–542). Evora.

Hugman,R.; Costa, L.; Stigter, T.; Monteiro, J.P. (2013) Estimativas de descarga submarina dos sistemas aquíferos Albufeira-Ribeira de Quarteira e Quarteira(Algarve, Portugal). III CJIG (Congresso Jovens Investigadores em Geociências),LEG 2013 and 6th PGUE, Oct 4, 2013, LIRIO (Laboratório de Investigação deRochas Industriais e Ornamentais da Escola de Ciências e Tecnologia daUniversidade de Évora).Estremoz, Portugal. pp 59 – 63

Costa, L.; Hugman, R.; Monteiro, J.P. (2013) Modelação da Descarga de Águas Subterrâneas  dos Aquíferos de Albufeira-Ribeira De Quarteira e de Quarteira (Algarve,Portugal). Associação Portuguesa de recursos Hídricos (APRH). 9º Seminário sobre Águas Subterrâneas.  Campus de Caparica, 7 e 8 de Março de 2013, Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa. pp 82-85.

Costa, L.; Salvador, N.; Hugman, R.; Monteiro, J.P.; Stigter, T. (2013) Modelação do Contributo de Água Subterrânea para a Lagoa de Santo André. III CJIG (Congresso Jovens Investigadores em Geociências), LEG 2013 and 6th PGUE, Oct 4, 2013. LIRIO (Laboratório de Investigação de Rochas Industriais e Ornamentais da Escola de Ciências e Tecnologia da Universidade de Évora). Estremoz, Portugal. pp 64 – 67.

Monteiro, J. P.; Costa; L.; Hugman, R. Stigter, T.; Nunes, L. (2013) Modelação de Águas Subterrâneas do Algarve Central Aplicada à Simulação de Descarga Submarina para o Oceano Atlântico e do Caudal de Base da Ribeira de Quarteira (Portugal). Actas do 11º Simpósio de Hidráulica e Recursos Hídricos dos Países de Língua Portuguesa (SILUSBA). Maputo, Moçambique. Org. APRH, ABRH, AMCT, INGRH. Doc. elect. CD-ROM 11pp

Salvador, N.; Stigter, T; Monteiro, J.P.; Hugman; R.; Duarte, D. (2013) Quantificação e Modelação das Relações Rio-Aquífero no Sistema Aquífero de Sines. Uma Contribuição para a Avaliação do Estado da Lagoa de Santo André. Associação Portuguesa de recursos Hídricos (APRH). 9º Seminário sobre Águas Subterrâneas.  Campus de Caparica, 7 e 8 de Março de 2013, Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa. pp 86-89.

Salvador, N.; Costa, L.; Hugman, R.; Monteiro, J.P.; Stigter, T.; Nunes, Luís; Duarte, D. (2013) – Monitoring and modelling groundwater contributions to dependent ecosystems. The case study of the Santo André coastal lagoon. Actas do VIII Congresso Ibérico de Gestão e Planeamento da Água (VIII Cigpa). 5-7 de Dezembro de 2013, Lisboa. ISBN 978-84-938966-6-9, FNCA, 771-780.

Stigter, T., Bento, S., Varanda, M. P., Nunes, J. P., & Hugman, R. (2013). Combined assessment of climate change and socio-economic development as drivers of freshwater availability in the South of Portugal. In TWAM2013 International Conference & Workshops. Aveiro, Portugal: CESAM – Department of Environment & Planning, University of Aveiro. Retrieved from http://repositorio.ul.pt/handle/10451/8347

Hugman, R.; Stigter, T.; Monteiro, J.P.; Nunes, L. (2012) Importância das Propriedades do Aquífero e da Distribuição Espacio-Temporal da Recarga e Extracção na Determinação de Caudais Sustentáveis. Associação Portuguesa de Recursos Hídricos (APRH). 11º Congresso da Água, Porto. Resumo e doc. Elect em CD-Rom. 15pp

Hugman, R.; Stigter, T.; Monteiro, J.P. (2012) The importance of temporal distribution and scale when determining sustainable yields in semi-arid regions. 39th IAH Congress.Confronting Global Change. Niagara Falls. Canada.

Stigter, T.; Ribeiro, L.; Samper, J.; Fakir, Y.; Pisani, B.; Tomé, S.; Nunes, J.P.; Oliveira, R.; Hugman, R.; Monteiro, J.P.; Silva, A.; Shapouri, M.; Fonseca, L. (2011) Comparative Assessment of the Impact of Climate Change on Coastal Groundwater Resources and Dependent Ecosystems in Three Mediterranean Regions. 5th European Coastal Lagoon Symposium (5th EUROLAG). University of Aveiro. Portugal

Salvador, N.; Monteiro, J.P.; Hugman, R.; Reis, E.; Stigter, T. (2011) Contribution of Allogenic Recharge to the Water Balance of the Querença-Silves Aquifer. International Conference on Ecohydrology and Climate Change. Inst. Politécnico de Tomar. Portugal. pp70

Hugman, R.T.; Costa, L. R.; Correia, T.C.; Monteiro, J.P.; Mil-Homens, J. (2011) Análise do Impacte do Uso da Água no Sistema Aquífero Almádena-Odeáxere – um exemplo das questões a nivel local e regional (Campo de Golf de Espiche). VII Congreso Ibérico sobre Gestión y Planificación del Agua (VII CIGPA) “Ríos Ibéricos +10. Mirando al futuro tras 10 años de DMA”. FNCA, 16/19 de febrero de 2011, Talavera de la Reina. Doc. Electr. CD-Rom. 5pp

Stigter, T., Monteiro, J.P., Nunes, L., Ribeiro, L., Hugman, R. (2010) Regional spatial-temporal assessment of groundwater exploitation sustainability in the south of Portugal. XXXVIII IAH Congress “Groundwater quality sustainability”, Krakow, Poland, 12-17 September, 2010. pp 123-130

Hugman, R.; Martins, J.; Monteiro, J.P. (2010) Modeling stream-groundwater interactions for different water extraction scenarios: the Almádena-Odeáxere case study. XXXVIII IAH Congress “Groundwater quality sustainability”, Krakow, Poland, 12-17 September, 2010. pp 1217-1223.

Jack Sinawo

Publications

Riemann, K, von Scherenberg, L., Fubesi, M. and Jack, S.O. (2012). Determination of the Groundwater Component of the Reserve: Mzimvubu to Keiskamma Water Management Area – Final Report: Western Portion. Prepared by Umvoto Africa (Pty) Ltd on behalf of the Directorate: Reserve Requirements. DWA Report NO. RDM/WMA12/02/CON/INT/0312.

Conferences:

Jack, S.O., Riemann, K, and Thompson, I. (2015). Support to the Implementation and Maintenance of Reconciliation Strategies for Towns in the Southern Planning Region, 4th YWP-ZA Biennial Conference and 1st Africa-wide YWP Conference, Pretoria, 16-18 November 2015.

Tyrel Flügel

Flügel, T.J., Eckardt, F.D., and F.P.D. Cotterill, F.P.D. (2017). The geomorphology and river longitudinal profiles of the Congo-Kalahari Watershed. In: The African Neogene-Climate, Environments and People: Palaeoecology of Africa,34:31-52. DOI: 10.1201/9781315161808-4

Eckardt, F.D., Cotterill, F.P.D., Flügel, T.J., Kahle, B., McFarlane M., and Rowe, C. (2016). Mapping the surface geomorphology of the Makgadikgadi Rift Zone (MRZ), Quaternary International, 404:115-120, DOI: https://doi.org/10.1016/j.quaint.2015.09.002.

Smit, H.A.P., Magagula, H.B., and Flügel, T.J., (2016) South African Military Geography: advancing from the trenches, South African Geographical Journal, 98:3, 417-427, DOI: 10.1080/03736245.2016.1208582

Moore, A., Flügel, T., Hutton-Squire, T., Hutton-Squire, M. and Humphrey, G. (2016) Size distribution of Baobabs on Kubu “Island”, Sowa Pan (northern Botswana): an indicator of late-stage evolution of the Makgadikgadi palaeo-lake and climate change?. South African Journal of Geology ; 119 (3): 535–544. doi: https://doi.org/10.2113/gssajg.119.3.535

Flügel T.J., Eckardt F.D., Cotterill F.P.D. (2015) The Present Day Drainage Patterns of the Congo River System and their Neogene Evolution. In: de Wit M., Guillocheau F., de Wit M. (eds) Geology and Resource Potential of the Congo Basin. Regional Geology Reviews. Springer, Berlin, Heidelberg, 316-337.

 

Grenfell, S.E., Ellery, W.N., Grenfell, M.C., Rasmsay, L.F. and Flügel,T.J. (2010), Sedimentary facies and geomorphic evolution of a blocked‐valley lake: Lake Futululu, northern Kwazulu‐Natal, South Africa. Sedimentology, 57: 1159-1174. doi:10.1111/j.1365-3091.2009.01141.x