Swisstopo Folio 2018

swisstopo 2018

Folio Focus on skills and diversity

where

knowing

swisstopo

Schweizerische Eidgenossenschaft Confédération suisse Confederazione Svizzera Confederaziun svizra

Federal Office of Topography swisstopo www.swisstopo.ch Dübendorf, coordinates 2 690 969, 1 251 203, 436 metres above sea level swisstopo Folio 2018

Contents

Foreword by Fridolin Wicki, Director of the Federal Office of Topography swisstopo 3

Commitment to the country and the people 400 employees with specialised skills perform a broad variety of services for a digitised society 4

Documenting what has happened “Rapid Mapping” supports responses to natural disasters, for example following the rock avalanche in Bondo 10

Keeping an eye on glaciers Geodata recorded during glacier flyovers form the basis for the “Glacier Monitoring Switzerland” programme 14

Finding out which side the sun shines on 3D data produced by swissBUILDINGS3D 2.0 support the calculation of the solar potentials of roofs and façades 15

Knowledge from beneath the ground For the first time, a comprehensive geological 3D model (“GeoMol”) depicts the conditions beneath the country’s surface 16

Always spot on! The swipos positioning service supports specialists in the areas of construction, surveying, agriculture and forestry, preparation of ski slopes, etc. 18

Outlook A digitised society constantly gives rise to new spatial requirements 22

Organisational chart 24 2017 facts and figures 25

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“The federal government asks itself what is of importance for the development of the country and for the economy and the population. As a geoinformation centre, we bring together know-how relating to geodata and the spatial dimension, at a central location and for the benefit of everyone.”

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Dear Reader,

“In a society in transition, the focus is almost always on the spatial dimension.”

What do you think of when you hear the name “swisstopo”? swisstopo’s approximately 400 employees provide a broad Maps? If so, you are in good company. swisstopo is variety of services for private citizens and units within the perceived by a large part of the population, as well as by federal administration. We have pleasure in describing some politicians and within the federal administration, as a of these in this edition of Folio, which I hope you will find map producer. We’re the people who make maps. And as interesting and informative! most people know, we now produce maps digitally – but they are still maps. The only difference is that you can view Fridolin Wicki, them on a mobile phone or tablet instead of on paper. Director of the Federal Office of Topography swisstopo

In this edition of Folio we want to show you that swisstopo is in fact much more than a producer of geodata and map material. The latter activities are only part of the equation. We are specialists for everything with a spatial context. And in a society in transition, the focus is almost always on the spatial dimension.

3 “If we have a problem, someone always finds a solution.”

Roberto Artuso, geomatics engineer and joint head of height model process

4 Employees of swisstopo in Wabern, coordinates 2 600 999, 1 197 465, 553 metres above sea level 465, 553 metres 197 1 999, 600 2 coordinates Employees of swisstopo in Wabern,

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Commitment to the country and the people

swisstopo provides a broad variety of services to private citizens, the cantons and the federal administration, all of whom benefit from the experience, wide-ranging contacts and collective know-how of its approximately 400 employees.

Strong partner. The Federal Office of Diversity and networking. swisstopo’s work- Interdisciplinary skills. Swisstopo’s approxi- Topography swisstopo supports the population, force comprises specialists from a variety of fields, mately 400 employees exchange know-how and the economy, the cantons and the federal including surveying, geology, geography, IT, opinions, think “out of the box” and make good administration through its comprehensive know- administration. As of the end of 2017 there were use of their personal experiences. Both sides how, advanced technology and 180 years of 391 employees from 13 countries, plus several (client as well as provider) benefit from this form experience in surveying. All its partners benefit interns and 27 apprentices. Despite a low fluctua- of collective intelligence. Thanks to inter from this, for example in connection with tion rate, swisstopo’s size inevitably means disciplinary skills it is possible to solve difficult surveying issues, data management or the changes of personnel in the course of a year. Its problems and adopt an innovative approach – visualisation of spatial problems. Other federal employees often hold key positions where various because knowledge grows when it is shared. authorities are able to use these services at threads come together. Many join swisstopo from reasonable cost: swisstopo operates economic the private sector and maintain their contacts ally, but is not profit-oriented. Tasks carried with former colleagues in the industry, as well as out on behalf of other federal authorities can be at home and abroad. offset through internal cost allocation.

6 Air services. swisstopo also provides air services The flight season lasts from March until the end through its three employees and two aircraft of October, with 40 to 50 flight days each season. stationed at Dübendorf military airfield in the The swisstopo personnel only spend around canton of Zurich. These services are required for ten percent of their time in the air. Most of their collecting data from the air for the national work is carried out on the ground: flight plan- survey, and for other special purpose flights. ning, incorporating all stakeholders including the swisstopo carries out the latter solely on the basis Federal Directorate of Cadastral Surveying, the of mandates from other entities such as the topography and cartography sections, as well Federal Office for the Environment (FOEN) or the as systems operation and the training of pilots Federal Institute of Technology, Zurich. These and flight controllers. After each flight, the services may take the form of glacier observations recorded data have to be processed: this involves or emergency flights following a natural disaster. downloading the data, calculating the flight paths, processing the images and deciding which terrain needs to be flown over again in order to obtain better quality images.

7 Specialists for the spatial dimension. Surveying the entire country. swisstopo’s Fostering Switzerland’s development. The swisstopo has accumulated an enormous amount official mandate is to survey the entire country. duties of a government are different from those of knowledge relating to geodata and the spatial The quality of its surveys has to be uniformly of a private company. A government has to dimension. Today, almost everyone can obtain high and must include regions that are structural- consider what is important for the development data from swisstopo, for example via their mobile ly less developed and have a low population of the country, as well as for the economy and phone. These devices constantly localise them- density, as well as the conurbations and major the population. swisstopo is active throughout selves and the data are combined with the spatial business centres. This can only be accomplished the entire country and is able to promote dimension. So which conclusions do we draw because swisstopo’s mandates do not pursue any and support developments from which everyone from this? How can we develop services that primary commercial interests. can benefit. meet the needs of the administration and the population? swisstopo channels, communicates and visualises knowledge – because in a changing society, spatial knowledge is becoming increas- ingly important.

8 Did you know? • swisstopo provides the Swiss armed forces with satellite • swisstopo acts as supervisory authority for smaller cantons images, data for flight simulators, special maps for military that do not have their own surveying authority. applications, etc. • With its “Rapid Mapping” service, swisstopo assists involved • swisstopo manages the geographic information system for units and authorities with the prevention of, and response armasuisse (the federal agency for the procurement of to, natural disasters. armaments), which contains detailed information about its • swisstopo supports the cantons and organisations such as land ownership. Nagra (National Cooperative for the Disposal of Radioactive • swisstopo operates the federal geodata infrastructure and Waste) by providing geological expertise. federal geodata portal (geo.admin.ch). • swisstopo’s surveying know-how is used in a broad variety of areas, for example for projects such as AlpTransit (on behalf of Swiss Federal Railways) or the inspection of dam walls (on behalf of energy service providers).

9 “The fruitful cooperation with swisstopo has greatly helped us in our response to natural disasters.”

Roderick Kühne, Head of the LNB project of the Office for Forestry and Natural Hazards, canton of Grisons

10 Bondo, coordinates 2 762 840, 1 134 049, 815 metres above sea level metres 049, 815 134 840, 1 762 2 Bondo, coordinates

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Documenting what has happened

In the event of the occurrence of a major natural disaster, swisstopo carries out special flights on the basis of mandates and records aerial images of the current situation. swisstopo’s “Rapid Mapping” service ensures the fast and efficient provision of geodata to all involved players and thus supports disaster response.

“Rapid Mapping” competence centre. Aways on call. swisstopo operates a “Rapid swisstopo is the federal government’s official Mapping” standby service and can be reached by provider of geodata. In the event of a major its client, the Federal Office for the Environment, natural disaster, it is responsible for providing the at any time. After all, natural disasters can occur federal government’s natural disaster response without warning and at any time of day or night. unit with geodata. The “Rapid Mapping” Thanks to the availability of a special “Rapid competence centre supports the involved units Mapping” backpack, the standby service is able and authorities (e.g. the Federal Office for the to go into action immediately and practically Environment and the relevant cantonal authori- anywhere in the country. ties) by rapidly recording and supplying geodata for their response to natural disasters. The “Rapid Mapping” products are used both for disaster response as well as for the documentation of natural disasters.

12 Special flights over Bondo. On 23 August The special flights over Bondo resulted in the What is “rapid mapping”? 2017 a major rock avalanche occurred on generation of a variety of products: Following a natural disaster such as the rock Piz Cengalo in the Bergell Alps, resulting in a avalanche in Bondo it is essential to be able to 1. Oblique images, i.e. photos taken manually series of huge mudslides that buried parts of the observe and depict the affected zones as with a reflex camera from the helicopter, which village of Bondo. On 25 and 30 August, and quickly as possible (e.g. by producing digitised produced a clear overview of the disaster. again on 5 September, swisstopo carried out images from orthophotos). Post-disaster These photos were delivered to the involved units special flights over Bondo on behalf of the images transmitted to the federal government’s and authorities immediately after each flight. Federal Office for the Environment and upon geodata portal can be posted online within a very consultation with the canton of Grisons Office for 2. Orthophotos. Here a distinction was made short time. The already existing official geodata Forestry and Natural Hazards. This operation between quick and standard orthophotos. With (e.g. SWISSIMAGE, the orthophoto mosaic was carried out using swisstopo’s ADS 100 line quick orthophotos the focus is on the rapid of Switzerland) depict the situation prior to the sensor and a helicopter provided by the Zurich delivery of the images rather than on accuracy. disaster. This enables the involved units and Cantonal Police. The basis for this cooperation is These are used for facilitating disaster response authorities as well as various other users to an agreement that entered into effect in 2016 and in the case of Bondo were posted online to quickly and simply make before/after compari- and was implemented for the first time following map.geo.admin.ch within 24 hours after the sons. the Bondo disaster. Barely 24 hours after the first images had been recorded. Standard orthophotos Further information flight, an initial set of data was already available are subjected to much more detailed processing • www.swisstopo.ch/rapidmapping on the federal government’s geoportal. in order to obtain the highest possible degree of precision. Because they are used for documentation purposes, the speed with which they are processed is less critical.

3. Digital terrain models, which are used for identifying changes and determining where masses have been shifted and their dimensions.

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Keeping a close eye on glaciers

The measurement programme Glacier Monitoring Switzerland (GLAMOS) permanently monitors changes to glaciers in the Swiss Alps. swisstopo supplies the geodata in the form of aerial images, orthophotos, height models and vector data.

Activities of the GLAMOS programme The GLAMOS programme is monitoring around 120 Swiss glaciers. It records changes in length, mass balance, volume, flow speed and ice temperature, as well as glacier inventories, ice thickness and predicted developments.

swisstopo products used in the GLAMOS programme • Aerial images and orthophotos for the documentation and depiction of changes to glaciers and for measuring their dimensions (length and breadth) • Height models for depicting changes in the ice volume (mass balance) • swissTLM3D (topographic landscape model) for glacier inventories, which encompass contours, surfaces and key data at a specified juncture for as comprehensive a random sample as possible of all glaciers in a given region • Archive data in the form of old aerial images Glacier Monitoring Switzerland (GLAMOS) Glacier edges. Specialists in the GLAMOS and national maps is a measurement programme that was initiated programme use swissTLM3D glacier edges (and is being managed) by the Cryospheric for their analyses of glaciers throughout the Alps. Commission of the Swiss Academy of Sciences. These vector data are produced by swisstopo The purpose of the programme is to systematical- on the basis of the aerial images obtained from ly document changes to Swiss glaciers over the annual flights carried out for the purpose of long term. The Cryospheric Commission is producing the topographic landscape model. receiving support for the implementation of the Extraordinary occurrences. In the event of programme from the Federal Institute of extraordinary occurrences such as the break-off Technology, Zurich and the universities of Fribourg of part of the Trift Glacier above Saas-Grund and Zurich. (canton of Valais) in September 2017, upon Aerial images of glaciers. Each year, swiss- consultation with glaciologists or specialists at topo’s air services team takes aerial photos of the Federal Office for the Environment selected glaciers on behalf of the GLAMOS swisstopo’s air services team immediately takes programme. These images are processed by off to record aerial images. swisstopo specialists as basic data in uniform quality so that specialised personnel in a variety of sectors can use them for their analyses – as orthophotos, height models and vector data.

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Knowing which side the sun shines on

The solar potentials of roofs and façades throughout Switzerland can be calculated by visiting sonnendach.ch. swisstopo supported the development of this platform by the Swiss Federal Office of Energy by providing three-dimensional building data.

What is the solar potential of your house? swissBUILDINGS3D: data in 3D 1. Go to www.sonnendach.ch and select “Roof” 3D building data are taken from swisstopo’s or “Façade”. swissBUILDINGS3D 2.0 dataset – a vector dataset 2. Enter your address. that depicts buildings as 3D models, including roof forms and overhangs. This dataset is used You can then discover the potential of your roof for a variety of purposes, including: or façade for the production of solar power or heat, as well as for reducing your heating costs. • 3D visualisations, construction of models, You will also find information about the incline, 3D printing orientation and surface area of your roof, and the • Integration into 3D portals quantity of theoretical electricity production • Solar cadastres during the past twelve months. The platform also • Analyses and as planning instruments in the Solar power as a major component of provides information about all the steps that are areas of urban and spatial development, Energy Strategy 2050. The solar potentials of required for the installation of a solar system. mobility, telecommunications, energy, utilities roofs and façades, plus the costs of the necessary and waste disposal, ecology, etc. infrastructure, can be calculated quickly and • Analyses of the dissemination of noise, conveniently with the aid of the interactive air pollutants and electromagnetic radiation application, sonnendach.ch. The Swiss Federal • Analyses of visibility and shadowing Office of Energy implemented this platform • Simulation of natural disasters together with swisstopo and SwissMeteo. Further information swisstopo is contributing by supplying its three- • www.swisstopo.ch/buildings dimensional building data for the calculation of solar potentials and providing the resulting data via the federal geodata infra structure.

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Knowledge from beneath the ground

swisstopo has produced the first complete 3D model (called “GeoMol”) of the ground beneath the Swiss Central Plateau. This model depicts the conditions beneath the surface and is to be used as the basis for making a variety of major decisions.

Showing what lies where. “GeoMol” depicts Why in the Central Plateau? Fifty percent Sharing knowledge and expertise. Two ten geological layers and the most important of the population live in this region. Utilisation of coherent 3D models were produced for the fault systems. It shows where the layers in space is very high here – both on and beneath “GeoMol” project based on an enormous volume bedrock in or near the surface are located, down the surface. However, the diversity of uses of data: to a depth of around six kilometres. This infor and demands can give rise to conflicts. Depicting • a general version as part of the European mation also forms a basis for major decisions the conditions beneath the surface helps all model that stretches from Savoy in France to to be taken by people other than geologists, for involved players to find acceptable solutions, for the southern Moravia region of the Czech example concerning the use of underground people as well as the environment. Republic, energy resources within the scope of Energy • and a detailed model of the Swiss Central Strategy 2050. It can also be used for depicting Plateau stretching from Geneva to St Gallen. legal situations – and underground 3D spatial A number of external specialists were involved in planning is about to be introduced. “GeoMol” is the project and shared their knowledge with also available for use in schools and universities, personnel at the Swiss Geological Survey. as well as by interested citizens.

16 The “GeoMol” project Numerous companies, public authorities, research institutions and specialists were involved in the “GeoMol” project, which was co-financed by the Federal Office of Topography, the Federal Office of Energy, the Federal Office for the Environment and the cantons of Aargau, Fribourg, Geneva, Lucerne, Solothurn, Vaud and Zurich. Numerous data owners supplied their datasets and thus ensured that the largest possible collection of data was available for the development of the model: • SEAG AG for Swiss Crude Oil / Nagra (National Cooperative for the Disposal of Radioactive Waste) • The following cantons: Aargau, Appenzell Ausserrhoden, Appenzell Innerrhoden, Bern, Fribourg, Geneva, Glarus, Grisons, Lucerne, Neuchâtel, Nidwalden, Obwalden, Schaffhausen, Schwyz, Solothurn, St Gallen, Thurgau, Ticino, Uri, Valais, Vaud, Zug, Zurich • St Gallen Municipal Works, Swiss Federal Railways, Swiss Federal Roads Office, Federal Institute of Technology, Zurich, Baden-Württemberg Office for Geology, Raw Materials and Mining (LGRB), French Bureau for Geological and Mining Prospecting (BRGM)

Implementing partners: the universities of Geneva, Fribourg, Bern and Basel, plus the Geological Museum of the Canton of Vaud.

Further information • Project website: https://viewer.geomol.ch • GeoMol EU: www.geomol.eu

17 “We have been using ‘swipos’ to efficiently and securely manage our snow grooming operations, and we intend to continue to do so in the future.”

Bernhard Salzgeber, Operations and Technical Manager, NVRM – Remontées mécaniques de Nendaz et Veysonnaz

18 Nendaz, coordinates 2 594 240, 1 113 040, 2232 metres above sea level 040, 2232 metres 113 240, 1 594 2 Nendaz, coordinates

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Always spot on!

With its “swipos” positioning service, swisstopo supports the activities of specialists in a broad variety of professions. Around 2,500 licences are currently in use, and demand is on the rise.

Precise positioning. swipos is used wherever Strong demand. swipos has been in use for Utilisation of synergies. With swipos, there is a need for fast, efficient and precise around 20 years now, and is a highly popular swisstopo is combining a government task with positioning: for example, in surveying, construc- service. It is reliable and fail-safe, and the devices an attractive commercial service. Licence holders tion, geomarketing, agriculture and forestry, are user-friendly. All that is needed in addition use swisstopo’s infrastructure, which in turn is protection of nature and the landscape. It helps to a GNSS* receiver is a user name and password. required for the national survey. swisstopo farmers keep their machines on track and map manages the network, updates the constantly their yields, enables construction engineers incoming data and assures the availability of a to accurately stake out their excavations and is a redundant system. useful tool for the operators of snow groomers when preparing ski slopes.

*GNSS = Global Navigation Satellite System

20 Two versions Further information There are two versions of the swipos positioning www.swisstopo.ch/swipos service: • swipos-NAV for positioning within the metre range. Here, users need a GPS GNSS receiver and a mobile phone. • swipos-GIS/GEO for high-precision positioning. This service is based on the automated Swiss GNNS network, AGNES, which comprises 30 permanently operated stations throughout Switzerland. The obtained data are evaluated and updated daily, and in some cases hourly. The AGNES network is used for the national survey.

21 “ As a unit of the federal administration, swisstopo’s mandate is to meet the spatial needs of a digitised society.”

In a digitised society such as ours, new spatial needs are being official geodata broker by functioning as a centralised provider created all the time. As a unit of the federal administration, of basic geoinformation. And we aim to further strengthen our swisstopo’s mandate is to meet these needs and to ensure that leadership role in the area of national geodata infrastructure. the country and its people benefit to the greatest possible Fridolin Wicki, extent, regardless whether this may be lucrative for us as a Director of the Federal Office of Topography swisstopo federal authority.Our approach is clear: we intend to strengthen our position as a service provider for the federal administration. Our aim is to foster and improve our cooperation with the cantons. We want to enhance our role as

22 Going back from Bondo to Dubendorf Going back from

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Organisation chart April 1, 2018

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Numbers 2017 Human resources

Number of full-time jobs Number of employees (not counting apprentices)

0 50 100 150 200 250 300 350 0 50 100 150 200 250 300 350

2017 310.05 2017 354

2016 320.10 2016 365

2015 323.20 2015 364

2014 318.10 2014 359

2013 308.40 2013 346

Number of part-time jobs (not counting apprentices, work-time percentage <90%) Number of apprentices

0 50 100 150 200 250 300 350 0 50 100 150 200 250 300 350

2017 130 36.7% 2017 27

2016 133 36.4% 2016 28

2015 124 34.1% 2015 28

2014 121 33.7% 2014 27

2013 110 31.8% 2013 26

Number of employees whose mother-tongue is French Number of women (not counting apprentices) or Italian (not counting apprentices)

0 50 100 150 200 250 300 350 0 50 100 150 200 250 300 350

2017 95 26.8% 2017 71 20.1%

2016 96 26.4% 2016 73 20%

2015 96 26.4% 2015 70 19.2%

2014 96 26.7% 2014 67 18.7%

2013 89 25.7% 2013 67 19.4%

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Key figures 2017

External federal revenues Internal federal revenues

Million 0 10 20 Million 0 10 20 Swiss franc Swiss franc

2017 9.4 2017 13.9

2016 9.3 2016 12.9

2015 10.5 2015 11.1

2014 11.2 2014 12.1

2013 11.5 2013 13.1

Running costs and investment (operating expenses)

Million 0 10 20 30 40 50 60 70 Swiss franc

2017 67.4

2016 65.9

2015 66.8

2014 64.3

2013 62.0

Internal federal accounting

Million 0 10 Swiss franc

2017 9.1

2016 8.8

2015 7.3

2014 6.2

2013 6.5

Operational accounting, cost recovery level Productive working hours

2017 29.6% 2017 584 935

2016 27.4% 2016 617 900

2015 27.4% 2015 615 168

2014 30.5% 2014 594 500

2013 33.1% 2013 581 800

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Production statistics

Geodata Revision of the Topographic Landscape (swissTLM3D): Update of 7370 km2 swissTLM-Map: Update of the entire data set. In addition mediatized updates 3×/year swissBUILDINGS3D 2.0: record of 1772 municipalities (30 272 km2) swissALTI3D: development and update of 7500 km2 SWISSIMAGE RGB: Update of 17 800 km2 SWISSIMAGE FCIR: Update of 17 800 km2 Aerial image strips: 480 aerial image strips were taken of a total of 19 500 km2 swissNAMES3D: Update of 7370 km2 swissBOUNDARIES3D: Update of the entire data set VECTOR200: Update of the entire data set EuroBoundaryMap: Update of the entire perimeter CH and FL EuroRegionalMap: Update of the entire perimeter CH and FL

Printed Maps Normal sheets of the National Map Series: 56 sheets of the National Map 1:25 000 25 sheets of the National Map 1:50 000

Composites of the National Map Series: 1 sheets 1:25 000 5 sheets 1:50 000

Thematic maps: 2 Hiking Maps 1:33 000 4 Snowshoe and Ski Tour Maps 1:50 000 1 ICAO Map 1:500 000 1 Glider Chart 1:300 000

Interactive solutions Swiss Map Mobile iOS: 8 updates Swiss Map Mobile Android: 6 updates

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Geodetic data Continuously processed GNSS permanent stations: Automatic GNSS Network of Switzerland (AGNES): 41 stations International/European permanent stations (IGS/EPN): 129 stations Geomonitoring networks: 54 stations Positioning service swipos-GIS/GEO: 2712 licenses

Planimetric control points: 1/5 of 223 main survey points of Switzerland is revised and local control of stability (area of romandie) Vertical control points: 69 km of the precise levelling network newly measured

Geological Products Geological Atlas of Switzerland 1:25 000, printed maps and pixel map: Bellelay/Saignelégier (Nr. 147), Bülach (Nr. 151), Raron (Nr. 153), Thusis (Nr. 154), Chasseral (Nr. 155) Special Geological Maps, printed maps and pixel map: Geological Map of the Aar Massif, Tavetsch and Gotthard Nappes 1:100 000 (Nr. 129) Vector data sets: GeoCover V1 (based on GA25), GeoCover V2 Report of the Swiss Geological Survey, print version: Nr. 10: GeoMol: Geologisches 3D-Modell des Schweizer Molassebeckens – Schlussbericht. Report of the Swiss Geological Survey, pdf version: Nr. 10: GeoMol: Geologisches 3D-Modell des Schweizer Molassebeckens – Schlussbericht. Nr. 11: Rapport au sujet de l’approvisionnement de la Suisse en matières premières minérales non énergétiques (Rapport sur les matières premières minérales). Nr. 11: Bericht über die Versorgung der Schweiz mit nichtenergetischen mineralischen Rohstoffen (Bericht mineralische Rohstoffe).

Status of cadastral surveying on Dec. 31, 2017

82.9% digital data available (+1.7%) 6.4% digital data in preparation(– 0.3%) 0.9% conventional data available (– 0.6%) 6.7% not yet surveyed (– 0.8%) 3.1% lakes (0%)

modifications compares to 2016

Statistic for the geodata infrastructure 13 million visits via the geoportal operated by swisstopo 99.91% Uptime (24/7) 631 topics available in the Federal Geodata Infrastructure SCCCF

Federal Office of Topography swisstopo Edition: 2,200 copies in German, 750 copies in French. www.swisstopo.ch The English and Italian versions of “Folio” are available as PDFs from www.swisstopo.ch/folio. Detailed versions of these texts are also available under this link. Federal Office of Topography swisstopo Design: Atelier Ursula Heilig SGD Seftigenstrasse 264, CH-3084 Wabern Text: escribo/Claudia Fahlbusch Tel. +41 58 469 01 11, Fax +41 58 469 04 59 Photos: Béatrice Devènes www.swisstopo.ch Cover photo: Slope preparation in the Nendaz ski area, coordinates 2 594 432, 1 114 028, 2163 metres above sea level email addresses • Federal Office of Topography swisstopo: [email protected] • Surveying: [email protected] [email protected] • Aerial photographs and geodata: [email protected] • Sale of publications: [email protected] • COGIS: [email protected] • Swiss Geological Survey: [email protected]

The Federal Office of Topography swisstopo is Switzerland’s geoinformation centre. We supply accurate, up-to-date and reliable basic information for surveying Switzerland, collecting data on the landscape and subsoil and documenting this over time. With swisstopo, every location in Switzerland can be precisely determined to the last centimetre. swisstopo thus fulfils a federal task.

Our products include national maps, elevation and landscape models, aerial photographs, orthophotos, geological data and maps or applications on the Internet, as well as on mobile devices. The federal government’s map viewer at map.geo.admin.ch is a particularly important element.