Du Toit - Professional GIS Practitioner - Pretoria, GP, South Africa

Lydia Du Toit

Pretoria, GP, South Africa


Professional GIS Practitioner


Spatial production of high quality maps using data from various sources and platforms. Providing GIS services to groundwater modelling specialists in creation of 3D models and sensitivity analysis and mapping for EIA and ESIA's. The integration of

Work History

GIS Practitioner/Consultant

Self Employed

From June 2013

Spatial and attribute data capturing and processing, data manipulation,
Mapping and reproduction procedures, Plotting and printing, Cartographic and geo-spatial information planning and design (including database design) and production, Training and mentoring (specialised training courses, course documentation and lecturing), Database and GIS integration, and set-up of geodatabases, Processing of GPS data and mapping thereof, Water balancing and ground water contouring, Site suitability modelling and site sensitivity modelling using GIS spatial analysis techniques. Visual impact assessments as part of environmental impact assessments and environmental management planning, field verification. Photogrammetric compilation and image processing, GIS office management and Compilation of office procedures and standards, mapping templates, training manuals, operating procedures, standards and file naming conventions, and the mentoring and training of GIS professionals, building and maintaining a data library and Archiving

GIS Team Lead

ERM South Africa

July 2007 - May 2013

Lydia joined ERM in July 2007 and was the Team Leader for the GIS team, responsible for all GIS QA/QC in ERM Southern Africa. She was involved in groundwater and mining projects across Africa, involving sensitivity mapping for large scale Power Line and Railway studies. Lydia was also involved with both contaminated site management and groundwater mapping for the Specialist Groundwater and Contaminated Site Management teams. Lydia spent 3 months in Boston, USA in the ERM office as an observer from 1 October 2012 to 21 December 2012.

GIS Consusltant


January 2006 - June 2007

Independant GIS Consultant. Contracts included working on the FAN Parks for the 2010 Soccer World Cup for Cityparks, Johannesburg.

GIS Specialist

Golder Associates Ltd (Calgary, Canada)

October 2004 - October 2005

Lydia was chosen to take part in Golder’s international exchange program in 1994 and worked in Calgary, Canada for a one year period. During this time she gained valuable exposure to international oil projects, EIA’s and smaller GIS projects for a range of specialist fields. Significant experience was gained while working on a remote sensing project, which involved vegetation studies for future developments on behalf of major international oil companies.

The purpose of the exchange was to create an awareness of the skills and capabilities of the Global group of companies, and the vast range of specialists and services within Golder Associates Ltd.

GIS Project Manager

Golder Associates South Africa

August 2002 - October 2004

She started the Geographic Information Systems Department and her responsibilities included GIS analysis and map-making within the Agricultural, Environmental, Waste and Water Treatment, Water Engineering, Mining and Geo-hydrological Departments. She also built an extensive data library for the company and was responsible for setting up templates and starting systems within the company for the GIS Department.
Lydia also undertook the task to train junior engineers on the basics in using ESRI software and was part of the Global Information Management working group.

GIS Project Manager

Wates, Meiring and Barnard, Consulting

April 1999 - July 2002

Lydia was appointed as the GIS Project Manager for Wates, Meiring and Barnard and was responsible for all mapping, analysis and printing of maps before the Golder Associates merger in August 2002.

Contract GIS Analyst

Computer Foundation

March 1994 - March 1994

Delineating EA's for the elections, cleaning of data from contractors and incorporating it into a existing national database.

GIS Analyst / GIS Trainer

Computer Foundation

March 1994 - March 1999

At Computer Foundation Lydia was involved in the both the Training and Project departments and was responsible for several clients. The client base varied from military, municipal and government, to utility companies and agriculture. She was also involved in client support with regard to software and GIS queries.
In the training department Lydia was responsible for GIS training, with courses ranging from Introduction to System Managers level. Software used included ReGIS, (ReORTHO, ReMAP, ReCAD, ReBASE, ReSPAN) and Autodesk World.

Customized training courses were facilitated for staff in the Agricultural Commercial sector, Surveyor General Staff in Piermaritzburg, Kwa-Zulu Natal and a ReORTHO course to the Ortho-photo department at Trig Survey in Cape Town.

Training ranged from customized courses, working with client specific data and setting up manuals. Lydia was also involved with the yearly GIS Client workshops, where classes ranged from 7 to 40 people.
She was seconded to Statistics South Africa in 1996 for 6 months and to the Independent Electoral Commission in 1998 and 1999. Lydia was also seconded to the IEC in 1993 – 1995 to assist in mapmaking and finalising of the mapping of for the elections.

Cartographer /GIS Analyst

TRC Africa

August 1991 - February 1994

Lydia got involved in GIS in 1991 at TRC Africa working on Mapinfo, (DOS and Windows version) she has become skilled in GIS practises and procedures.

Lydia was employed as a Cartographer and to assist the GIS Manager to implement and market MapInfo to clients and to be trained as GIS Analyst. The projects the company got involved in included delineating land-use parcels, corridor analysis, statistical and thematic mapping with regards to transport and development trends, locality maps and doing client support on MapInfo software

OrCAD Operator


October 1989 - May 1990

Exposure to the CAD envirionment, working on OrCAD (an electronic cad software package). This included the building up of a library of electronic components and using them in layouts. All of this was done in a very secure, highly classified environment as a consultant to DENEL


SVHP Consulting Engineers

August 1981 - March 1982

Mechanical and electrical tracer in drawing office.


SANDF - 47Survey Squadron

May 1980 - September 1989

Joined the armed forces in 1980 and left in 1981 to get married. Joined again in 1982, studying to become a Cartographer as well as doing military training and courses within the South African Engineers Corps.
Was deployed in the Cartography Section working on sensitive projects. This involved map making from manuscript stage to the final printing proofs for 1:250 000 map series and magenta overlays on existing map series.
Lydia was in the Checking Department, responsible for QA of the maps before it being sent to the Printing Unit and utilized in the ortho-photo department for specific projects.

Lydia was nominated to do a Junior Leaders Course at the School of Engineers at Kroonstad in the Free State Province. After successfully completing the course as the only female student, she was part of a team writing new technical manuals for the unit and was one of a group of instructors that trained the troops to work in the field offices as cartographers and photogrammetrists.

Lydia was promoted to Troop Sergeant Major in the Cartography Troop where she got more involved in the administrative process involving budgets and human resource management. She was transferred to Chief Staff Operations as Cartographer before leaving the National Defense Force in 1998

Premium Clerk

Momentum Life Insurers

December 1979 - April 1980

Responsibilities included the daily banking of the premiums, answering and solving queries form policy holders

Distribution Clerk


December 1978 - November 1979

Worked in the distribution department. Was responsible for the import permits for rye, barley and wheat. Following upon illegal sales of rye barley, wheat. Creating monthly reports on the stock in the country and reporting it to the management team.


Lake Albert Sensitivity Mapping, Uganda

Lake Albert, Sensitivity Social and Environmental Study. This project made extensive use of Geographical Information Systems to map scenarios and run models to indicate the sensitive areas. It involved identifying relevant data sets, extracting and manipulation of available data and assigning attributes to new data sets that were usable within the constraints set up to determine sensitivity mapping on various source data sets. The results were used by the specialists to determine suitable areas for the client to use, while maintaining the environmental sensitive areas.

Bong Mine, Liberia

Upgrading of roads and Port of Monrovia to transport and ship product.
Baseline study was followed up with an ESIA on the Bong mine after the war and the upgrade and building of roads and railway lines from the mine to the port.
Mapping for the Social and Cultural studies had to be done to show and include local communities in the developments and to minimise impact on the environs. DEM was built to illustrate the location of the mine and the Tailings Dam in relation to the rivers and forest areas and the proposed Conservation Park.

Iron Ore Studies

Mapping of series of zoomed in maps along the routes,showing railway line upgrade from port to the mines
Maps for BID process,
Sourcing of data and doing environmental sensitivity mapping

WCL Liberia

ESIA for upgrade of existing mine and the upgrading and building of the existing railway line and road from Monrovia to Bomi. The building and development of the mines were done in stages and I covered the BOMI development phase.
The social team identified communities within a 5km radius around the mines, road and railway line and impacts and assessments were done and depicted on maps. Aerial imagery was flown and the contour data was used to build a 3D image of the area to do a VIA. Data was captured to show sensitive areas and possible cultural sites within the impact zone

Social Maps, South African sites

Creating maps for proposed developments such as shopping centres, landfill sites and new urban developments. Ward delineation, cadastral and municipal boundaries form the basis for these maps for the client. Statistical data is used as pie graphs and thematic mapping

BRT Bus Route, Pretoria

Maps were created showing crime hot spots, existing rail and bus routes with statistical data overlaid showing population, movement to and from home and work and existing EMT’s, fire stations and medical and educational facilities to plan the bus stops and routes.

Qualifications & Certifications

Oos Moot Primary

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