Geospatial Services

A Geographic Information Systems (GIS) is a computer-based tool that enables you to collect, analyse and connect location-based information and visualize this data on a map. With a GIS system, geospatial information can be analysed to gain insights and solve complex spatial problems. For example, GIS layers showing existing mine infrastructure, mining components, water resources, land use, and other survey results could be overlaid to identify areas most suitable for ongoing rehabilitation activities or to inform mine closure planning.

E-TEK successfully completed a wide range of Environmental Engineering, Mine Closure and Rehabilitation, and Environmental Management projects and our geospatial implementations range from small mapping exercises to large planning and analysis projects.

We use state-of-the-art industry standard software to provide our clients with detailed, accurate and interpretable spatial products that encompass the acquisition, analysis, integration, visualization, and management of geospatial data.

Data Capturing

The acquisition of quality data is one of the key variables in obtaining meaningful results. Our team gathers and verifies quality geospatial data through accurate desktop studies of imagery, maps, drawings, photogrammetry, and reports. We also execute detailed field data collection with GPS mobile capturing devices and survey equipment

Image Processing

Aerial photography, satellite imagery, data acquisition and transformation are some of the most powerful data-capturing techniques for the creation of GIS spatial databases. Our services include checking, mosaicking, georeferencing, and georectification of raster datasets for use in mapping.

Spatial Data Presentation Solutions

The value of data is defined by its accessibility and presentation. Our team takes pride in designing, creating, and updating unique and precise maps to support mine closure liability forecasts, mine closure planning, monitoring and rehabilitation planning.

Change Detection

Accurate data on land use and land cover change are crucial for liability forecasts, monitoring, and other environmental and remediation studies. 

We identify, measure, and describe change in geospatial data, its features, and attributes captured with mapping software and imagery.

Environmental Risk Classification

Our qualified team uses existing data, field studies and interviews to produce extensive and current infrastructure risk classification maps, databases, and photo libraries for operational use by clients.

Environmental Risk and Constraints Mapping

Constraints mapping is a useful tool to identify potential conflicts between design and the environment as well as provide useful information to inform early stakeholder discussions, gap analysis, and decision making. Our GIS team provides detailed site-specific analysis and mapping of opportunities, constraints, and potential impacts at any scale.

Spatial Data and Terrain Analysis

Spatial analysis involves comparing the characteristics and the relationship between places and lends new perspectives to decision-making. Our team employs elevation data in conjunction with other geospatial information for visualisation, interpretation, modelling, and to support decision making. The analysis of topographic features include slope, aspect, viewshed, elevation, contour lines, flow, and flow lines, which enable us to carry out:

• Water resource and water management studies

• Contaminated land mapping

• Land capability assessments

• Visual impact assessments

• Sensitivity analyses

• Material cut and fill balances

• Erosion studies

• Social impact assessments

Data Management

We acquire, analyse, process, maintain, and update pertinent geospatial data in detailed and easy to access project databases for use by E-TEK and our clients.