Topo Services

Your surveying team in Reunion Island

Well-known since 2003 for our expertise in topography and certified by Bureau Veritas in georeferencing and network detection since 2021, we can assist you in all types of topographical surveys, in Reunion Island and all across the Indian Ocean.

Equipped with high performance and regularly renewed tools and mastering a wide range of technologies, our team will know how to assist your projects and guarantee precise results whatsoever your projects.

Contact us

What is topography ?

Topography is science which allows measurement on a land area and then the representation on a plan or map of all any visible details. These objects can be natural (trees, reliefs...) or man-made features (roads, buildings, road structures...). The goal is to define the planimetric (XY) and altimetric (Z) position of all points located in an area with a certain level of precision.

Core business of TOPO Services is topography : our team is composed of surveyors and topographers with different backgrounds, from baccalaureate to surveying engineer. Thanks to our diverse skills and tools, we can constraints/offer the best solutions suited to your needs.

For all types of projects, it is necessary to realise a topographic map of a land area. A high-quality survey will result in a better control of project costs, from the preliminary study to the project conclusion. Internal control at each step of the project through informations and collected data remains one of the priorities of our profession for ensuring the results reliability.

Continous technological advancement in topography has eventually led us to a quicker and more precise survey than before.

New technologies (robotic stations, drones, GPS, mobile mapping…) are tools only provided to the surveyor / topographer to help him conduct its mission. Those technologies will never replace the know-how and specific techniques used by the surveyor during his survey. Topography is a job in itself, no one can improvise himself as a surveyor. There are rules to obtain the required precisions with technical surveys to know and master.

Nowadays, surveyors / topographers conduct surveys on opened or closed trench networks. In the case of an as-built survey of an opened trench, the surveyor must be certified in georeferencing and in the case of closed trench, he must be certified in network detection. TOPO Service is certified by Bureau Veritas in network geo-referencing and network detection since 2021.

Nivellement de la Route du littoral réalisé par TOPO Services Mesure traditionnelle pour le GPMDLR Préparation équipement en vue d'un accès par ravine - Photo de TOPO Services Mesure topographique en ravine réalisée par TOPO Services

Land leveling of the Reunion Island Coast Road

Traditionnal monitoring for the GPMDLR

Preparing the equipment for a ravine survey

Topographical survey requiring access through the ravine

Icône d'information réalisée par TOPO Services

Pros and cons of traditional topography

Very precise measurements

The main advantage of traditional topography techniques, with a technician and conventional equipment, is the ability to achieve very precise measurements below a millimeter. This traditional surveying equipment includes a total station and a precision level suitable for polygonal surveys, civil engineering, controls, leveling, expertises and topographic surveys.

Difficult set up depending on the survey area

As manual surveys, the main limit of this method resides in the surveyed area accessibility. Thanks to new surveying technologies, the use of drones will allow us to overcome this constraint, but it will bring other drawbacks.

Our technical equipment

The equipment provided to our teams is regularly renewed. Special attention is paid to the surveyors tools upgrade to best meet the needs of our clients. Our current tools are listed below :

  • Six Leica theodolites

    Two TS15 1', one TS15 5', one TS16 3', one MS50 1' and one TS60 0.5'

  • 5 Leica GPS + 2 Leica GS10 and GS16 movable pivot

    GS16 and GS18 models

  • Leveling tools

    DNA03 electronical level with 2m invar staff and the adequate equipment for precision leveling

  • Detection tools

    A RD8000 electromagnetic sensor and its TX10 generator and a VIVAX VLOC PRO3 LINK electromagnetic sensor

Théodolite Leica sur le Grand Port Maritime de la Réunion, matériel de TOPO Services Théodolite Leica sur le chantier de la Rivière des Galets, matériel de TOPO Services Théodolite Leica sur la plage de St Pierre, matériel de TOPO Services GPS GS18 sur l'aéroport Roland Garros, matériel de TOPO Services Pivot Mobile Leica GS10 sur le chantier de la route des Tamarins, matériel de TOPO Services Niveau électronique DNA03, matériel de TOPO Services Electromagnetic network detection method Leica DS2000 Utility Detection Radar Topographic control on the Rivière de l'Est bridge

Leica theodolite on the Grand Port Maritime of Reunion Island

Leica theodolite on the Rivière des Galets survey area

Leica theodolite on St Pierre beach

GS18 GPS on Roland Garros airport

Pivot Mobile Leica GS10 movable pivot on the Route des Tamarins construction site

DNA03 electronical level with 2m invar staff

Electromagnetic network detection project

Leica DS2000 Utility Detection Radar

Topographic control on the Rivière de l'Est bridge

Some of our works

Photo d'un théodolite sur site Exemple de référence utilisée pour la polygonale Rattachement des stations à l'aide d'un GPS Photo de l'équipement spécifique pour relever les déchets Rendus sous forme de plan AutoCAD avec un MNT fidèle au terrain naturel Rendus sous forme de plan AutoCAD avec un MNT fidèle au terrain naturel

Leica theodolite TS15P 1' on ISDND site

Reference mark example, as used in polygonation

Stations reattachment with GPS use

Specific equipment used for waste collection

AutoCAD drawing with an accurate Digital Terrain Model of the natural ground

AutoCAD drawings with an accurate Digital Terrain Model of the natural ground


Topographical survey

Survey conducted with the use of a GPS and a theodolite – Survey of the 55ha area updated annually.

Setting up of a polygonal traverse for the topographical survey of the area. This survey has been rendered as a topographical plan and a Digital Terrain Model based on 3d slope rupture lines.

  • Area of intervention

    ISDND at Pierrefonds, in St-Pierre

Réalisation de relevés assurée par TOPO Services Réalisation de relevés assurée par TOPO Services Rendu sous forme de plan topographique sous AutoCAD Plan de recollement des réseaux EU et EP distincts Plan de recollement des réseaux EU et EP distincts

Conducting measurements

Conducting measurements

AutoCAD topographical plan

EU and EP distincts networks record drawing

EU and EP distincts networks record drawing


As-built survey of a housing development

The survey was conducted during works advancement to realize a complete general as-built drawing.

Topographical plan with separate layers for the sewage and rainwater networks.

  • Equipments used in this project

    TS16 3’ and GPS

  • Area of intervention

    La Saline-les-Bains
    Reunion Island

Mise en oeuvre des mesures de la Route du Littoral par TOPO Services Mise en oeuvre des mesures de la Route du Littoral par TOPO Services

Conducting measurements

Conducting measurements


Precision leveling project

Double Chowlesky leveling with a precision level and two leveling rods on two parralel ways on RN1 emergency lane.

We spent three days conducting a 7 kms double-leveling with opening and closing of pathways on 5 leveling benchmarks. The results is in a form an excel spreadsheet showing altimetry of all surveyed points.

  • Area of intervention

    Route du Littoral (NRL construction site)

  • Equipments used in this project

    DNA03 and two 2m invar staffs + footplates

MS50 sur pilier d’auscultation pour le chantier de la NRL

MS50 positioned on telescopic pillar for NRL site survey


Polygonal traverse monitoring

As external monitors on specific projects, we are required to check out on the work done by the construction company. We may monitor stake out, polygonal traverse, etc.

  • Equipments used in this project

    MS50 1’ with forced centering tools

Calage et implantation de précision de platine pour support de panneaux solaires à l'aéroport Roland Garros

Roland Garros Airport Project


Roland Garros Airport Project

Angular setting and accuracy implementation for solar-panels support frames.

  • Area of intervention

    Sainte-Marie, Reunion Island

Contact us

+262 2 62 59 92 28

Cookies use

This website uses Google Analytics cookies in order to measure this website trafic.

Measured data are anonymous and only concern our website. Do you accept their use during your navigation on our website ?