What Survey Deliverables Do You Receive from a LiDAR Project?

A LiDAR survey is only valuable if the final data can be used by the project team.

For engineers, planners, architects, mining teams, environmental consultants, GIS specialists and project managers, the value of a LiDAR project is not only in the aerial capture. The real value is in the deliverables produced from the survey data.

These deliverables help project teams understand terrain, elevation, surface features, access constraints, route options, stockpile volumes and project conditions before important planning, design or construction decisions are made.

BB Aerial Surveyors provides fixed-wing LiDAR and aerial mapping solutions for infrastructure, energy, mining, agriculture, environmental and development projects across Southern Africa. The company’s services include Aerial LiDAR Surveys, Photogrammetric Mapping & Orthophotos, GIS & 3D Data Integration, Engineering-Grade Surveys, Corridor Mapping, Mining & Volumetric Surveys, Route Selection & Feasibility Studies, Environmental & Agriculture Mapping and Professional Ground Surveying.

This article explains the common survey deliverables that may be produced from a LiDAR project and how they can support better project decisions.

Why LiDAR survey deliverables matter?

Survey deliverables are the final data outputs that a client receives after a survey has been captured, processed and quality checked.

These outputs can be used for:

• engineering design

• route selection

• feasibility studies

• mining and volumetric calculations

• terrain modelling

• contour generation

• infrastructure planning

• environmental mapping

• GIS integration

• project reporting

• site planning

• construction preparation

Different projects require different deliverables. A mining project may need volumetric data and stockpile information. A transmission corridor may need terrain models, contours, route alignment data and orthophotos. A land development project may need slope information, buildable area context and accurate ground-surface data.

The key is to understand which outputs are useful for your project before the survey begins.

1. LiDAR Point Cloud Data

A LiDAR point cloud is one of the most important outputs from a LiDAR survey.

It consists of millions of measured points captured from the survey area. Each point contains spatial information that helps represent the terrain, vegetation, buildings, structures, roads, stockpiles and other visible surface features.

Point cloud data can be used to create a detailed 3D representation of the project area.

A LiDAR point cloud can help project teams understand:

• terrain shape

• elevation differences

• surface features

• vegetation structure

• infrastructure corridors

• stockpile shapes

• large-area site conditions

• complex or difficult terrain

Point cloud data is often used as the foundation for many other deliverables, including terrain models, surface models, contours and 3D outputs.

2. Digital Terrain Model

A Digital Terrain Model, often called a DTM, represents the bare-earth ground surface.

This means the DTM is used to show the underlying ground level, without focusing on above-ground surface features such as trees, buildings or vegetation.

A DTM is useful when project teams need to understand the actual landform of a site.

A Digital Terrain Model can support:

• engineering design

• road and access planning

• route selection

• slope analysis

• drainage planning

• earthworks planning

• development feasibility

• terrain modelling

• contour creation

For wooded, mountainous or difficult terrain, a DTM can be especially valuable because it helps project teams understand the shape of the land more clearly.

3. Digital Surface Model

A Digital Surface Model, often called a DSM, represents the visible surface of the survey area.

Unlike a DTM, which focuses on the ground surface, a DSM includes above-ground features such as vegetation, buildings, infrastructure, stockpiles and other objects on the surface.

A DSM can help project teams understand what exists above the ground.

A Digital Surface Model can be useful for:

• vegetation analysis

• surface feature mapping

• infrastructure planning

• urban or developed areas

• site context

• surface height understanding

• visualising above-ground features

• comparing ground and surface conditions

The difference between a DTM and DSM is important.

A DTM helps answer:

“What does the ground look like?”

A DSM helps answer:

“What does the visible surface look like?”

Both can be useful, depending on the project requirement.

4. Contour Data

Contours are lines that connect points of equal elevation.

They help project teams understand the shape, slope and elevation changes of the land. Contour data is one of the most familiar and practical survey outputs for engineers, architects, planners and developers.

Contours can support:

• site planning

• engineering design

• slope understanding

• access road planning

• drainage assessment

• route selection

• buildable area assessment

• development layout planning

• environmental planning

Contour intervals can vary depending on the project requirements, survey specifications and level of detail required.For early planning, contours help project teams quickly understand whether the land is flat, steep, uneven, complex or suitable for the intended use.

5. Orthophotos

An orthophoto is a corrected aerial image that provides accurate visual context of the project area.

Unlike a normal aerial photograph, an orthophoto is processed so that it can be used more reliably for mapping, planning and measurement reference.

Orthophotos are useful because they are easy for both technical and non-technical project team members to understand.

An orthophoto can help show:

• roads

• tracks

• vegetation

• buildings

• stockpiles

• water features

• site access

• infrastructure

• property context

• land-use features

• visual project conditions

Orthophotos are often used together with contours, route alignments, GIS layers and survey boundaries to create a clearer understanding of the site.

6. GIS-Ready Data

GIS-ready data is survey information prepared so that it can be used in Geographic Information System platforms.

This allows project teams to combine the survey deliverables with other spatial data such as boundaries, alignments, environmental layers, infrastructure networks, servitudes, roads, watercourses and planning information.

GIS-ready data can support:

• spatial analysis

• infrastructure planning

• environmental studies

• corridor mapping

• asset management

• route selection

• project reporting

• stakeholder communication

• land-use planning

• data integration across teams

GIS-ready data is especially valuable when multiple teams need to use the same survey information across planning, engineering, environmental and project management workflows.

7. 3D Terrain Models

LiDAR data can also be used to create 3D terrain models.

These models help project teams visualise the shape of the land in a more practical way. They can make complex terrain easier to understand, especially for non-technical stakeholders.

3D terrain models can support:

• project presentations

• land development planning

• route comparison

• terrain feasibility

• mining planning

• infrastructure corridor review

• stakeholder discussions

• early-stage design decisions

For mountainous, wooded or difficult terrain, 3D models can help decision-makers see the relationship between elevation, slopes, access and possible development areas more clearly.

8. Mining and Volumetric Outputs

For mining, quarrying and stockpile environments, LiDAR survey data can support volumetric outputs.

These outputs help project teams measure, assess and track material volumes.

Volumetric deliverables can support:

• stockpile measurement

• quarry mapping

• mine planning

• material reconciliation

• surface change monitoring

• pit and dump planning

• operational reporting

• site condition assessment

Mining and volumetric outputs are useful because they turn survey data into practical information that can support planning, reporting and operational decision-making.

9. Corridor mapping outputs

For powerlines, pipelines, roads, rail, transmission corridors and infrastructure routes, LiDAR survey deliverables can support corridor mapping.

Corridor mapping deliverables may include:

• LiDAR point cloud data

• orthophotos

• terrain models

• contours

• route alignment data

• elevation profiles

• vegetation information

• access route context

• GIS-ready corridor layers

These deliverables can help project teams understand the land along a proposed or existing corridor. This is useful for planning, design, maintenance, route selection and infrastructure development.

10. Engineering-Grade Survey Outputs

Engineering-grade survey outputs are prepared to support technical project work.

These outputs may be used by engineers, architects, planners, designers, GIS teams, mining teams and environmental consultants.

Depending on the scope, engineering-grade deliverables may include:

• point cloud files

• terrain models

• surface models

• contours

• orthophotos

• CAD-ready data

• GIS-ready data

• elevation information

• route data

• volumetric outputs

• survey control information

• mapping deliverables

The final deliverables should always be aligned with the client’s intended use.

This is why it is important to discuss the required outputs before the survey is captured.

Which deliverables should your project request?

The correct deliverables depend on the project type, project stage and intended use of the data.

For example:

A route selection or feasibility project may need terrain models, contours, slope information, access route options and orthophotos.

A mining project may need point cloud data, stockpile volume outputs, surface models, contours and orthophotos.

A corridor mapping project may need LiDAR point cloud data, orthophotos, terrain models, contours, route alignment information and GIS-ready layers.

A land development project may need contours, terrain models, orthophotos, slope context and buildable area information.

An environmental or agricultural project may need orthophotos, terrain data, elevation models, drainage context and GIS-ready outputs.

The most important question is not only:

“Can the area be surveyed?”

The better question is:

“What data does the project team need to make the right decision?”

What should be confirmed before requesting a LiDAR survey quote?

Before requesting a quote, it is useful to confirm:

• project location

• approximate survey area

• intended use of the data

• required deliverables

• required accuracy

• required file formats

• preferred coordinate system

• project timeline

• whether ground control is required

• whether orthophotos are required

• whether contours are required

• whether GIS or CAD-ready files are required

• whether the data will be used for planning, design, construction, reporting or feasibility

Providing this information upfront helps ensure that the survey is scoped correctly. It also helps avoid a situation where the wrong outputs are produced for the project team’s needs.

Why deliverables should be agreed upfront?

A LiDAR project should begin with a clear understanding of what the client needs to receive.

This matters because deliverables influence:

• survey planning

• capture specifications

• processing requirements

• quality control

• timelines

• file formats

• final data usability

• project cost

If the required outputs are not discussed early, the project team may receive data that is technically correct but not suited to their workflow.

For example, an engineer may need contours and CAD-ready files, while a GIS team may need spatial layers and georeferenced datasets. A mining team may need volumetric outputs, while a planner may need orthophotos and terrain models.

The best results come from aligning the survey scope with the project decision that needs to be made.

Frequently Asked Questions

What is the main deliverable from a LiDAR survey?

The main deliverable is often the LiDAR point cloud, but most projects also require processed outputs such as terrain models, surface models, contours, orthophotos or GIS-ready data.

What is the difference between a DTM and a DSM?

A DTM shows the bare-earth terrain surface. A DSM shows the visible surface, including above-ground features such as vegetation, buildings, structures and other objects.

Why are contours useful?

Contours help project teams understand elevation changes, slopes, gradients and terrain shape. They are commonly used for planning, engineering design, route selection and development assessment.

Are orthophotos the same as normal aerial photos?

No. Orthophotos are processed aerial images that are corrected for mapping use. They provide more reliable visual context than normal aerial photographs.

Can LiDAR deliverables be used in GIS?

Yes. LiDAR survey data and related outputs can be prepared as GIS-ready data, depending on the project scope and required file formats.

Can LiDAR be used for stockpile volumes?

Yes. LiDAR data can support mining and volumetric outputs, including stockpile measurement and surface modelling.

What deliverables should I request for a feasibility study?

For feasibility work, useful deliverables may include orthophotos, terrain models, contours, slope information, elevation data and GIS-ready layers.

Should deliverables be confirmed before the survey starts?

Yes. The required deliverables should be confirmed upfront so that the survey can be scoped, captured and processed according to the project’s intended use.

Need LiDAR survey deliverables for your next project?

BB Aerial Surveyors provides fixed-wing LiDAR and aerial mapping solutions for infrastructure, energy, mining, agriculture, environmental and development projects across Southern Africa.

Our team can assist with survey planning, aerial data capture, processing and practical survey deliverables that support better planning, design and project decisions.

If your project requires point cloud data, terrain models, contours, orthophotos, GIS-ready data, volumetric outputs or engineering-grade survey information, speak to BB Aerial Surveyors about your project requirements.

Contact BB Aerial Surveyors to discuss the right survey deliverables for your next project.