Illustrative: a truss under a moving load with members coloured by stress, a lattice tower swaying, or a geodesic dome

Risk Academy, led by the Nexus Consortium · Infrastructure, Energy and Industry · Department of Cities and Infrastructure Systems

Electricity, water, transport, telecommunications, health and emergency services

Critical infrastructure and lifelines

Critical infrastructure and lifelines covers the systems whose failure cascades across society: electricity, water and wastewater, transport, telecommunications, and health and emergency services.

01Scope

What the discipline covers

The subtopics its courses and labs teach.

Courses
In preparation
Levels
L2 Intermediate
Labs
Network lab, Map lab, Exposure lab, Geo quiz
  • Criticality assessment
  • Interdependency and cascading failure
  • Resilience engineering
  • Telecommunications and subsea cables
  • Lifeline restoration
  • Asset management and standards
  • Infrastructure governance and regulation
  • Infrastructure investment and resilience
02Maps

Build a twin of any place

Search any place or open the world; the layers and generators follow critical infrastructure and lifelines on the planet map, the globe and in 3D.

Wellington and its harbour: a flat plan of the faculty twin. Terrain 0 to 523 m; 83,815 buildings in the box; 5,085 footprints in the core, 2,796 with an estimated height; Roads 176 km; Rail 99 km; 57 substations; 4 port; 2 airport; 5 hospitals; 8 railway stations; 4 water works; 2 power plants, 202 MW. Contours every 100 metres from the elevation grid; buildings as counts per cell; roads and rail by class; lifeline assets as marks; power plants as marks.
Wellington and its harbour, New Zealand. Flat plan of the same data. The 3D twin opens on devices that can draw it, once its data and code have been checked; the numbers are the same either way.
  • Terrain 0 to 523 m
  • 83,815 buildings in the box
  • 5,085 footprints in the core, 2,796 with an estimated height
  • Roads 176 km
  • Rail 99 km
  • 57 substations
  • 4 port
  • 2 airport
  • 5 hospitals
  • 8 railway stations
  • 4 water works
  • 2 power plants, 202 MW
Credits and dates per layer are listed under the stage. Relief in the twin is exaggerated ×1.5 for legibility.

Drag to move, right drag or Shift with a drag to turn and tilt, Ctrl with the wheel to zoom. Keyboard: arrows move, Shift with arrows turn and tilt, + and – zoom, 0 resets, V steps through the views, Escape clears.

Flat plan of the same data. The 3D twin opens on devices that can draw it, once its data and code have been checked; the numbers are the same either way.

The boundaries, names and designations shown do not imply any judgement on the legal status of any territory, or any endorsement or acceptance of such boundaries. Countries: Natural Earth (public domain).

03Live map

Infrastructure exposure in the Danube Basin

Night-time lights as a proxy for built activity, with flood water, fires and population, over the Danube Basin.

The interactive map needs JavaScript; the layer list and sources are below.

Layers 2

Infrastructure exposure

Latest available

NASA GIBS / EOSDIS · ASTER GDEM (METI, NASA) · Blue Marble (NASA) · © OpenStreetMap contributors (ODbL) · Natural Earth

Loading the latest NASA imagery.

Drag to move. Ctrl or ⌘ and scroll, pinch or the buttons to zoom; hover for the values under the pointer; reset returns to the region.

Infrastructure exposure, framed on the Danube Basin.Satellite and model products as NASA publishes them, each with its own date. They are indicators, not assessments of any place.

Data: NASA GIBS · ASTER GDEM · Blue Marble · © OpenStreetMap contributors · Natural Earth · NASA EONET · U.S. Geological SurveySources and licences

  • We acknowledge the use of imagery provided by services from NASA's Global Imagery Browse Services (GIBS), part of NASA's Earth Science Data and Information System (ESDIS). Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). NASA open data
  • We acknowledge the use of imagery provided by services from NASA's Global Imagery Browse Services (GIBS), part of NASA's Earth Science Data and Information System (ESDIS). Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). NASA open data
  • VIIRS Black Marble night-time lights, NASA Goddard Space Flight Center; distributed by the NASA Level-1 and Atmosphere Archive and Distribution System (LAADS DAAC); imagery via NASA GIBS. Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). NASA open data
  • VIIRS near-real-time products (flood, land surface temperature, snow cover, corrected reflectance), NASA LANCE; imagery via NASA GIBS. Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). NASA open data
  • NASA Fire Information for Resource Management System (FIRMS), VIIRS 375 m active fire product, NASA LANCE; vector tiles via NASA GIBS. Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). NASA open data
  • Center for International Earth Science Information Network (CIESIN), Columbia University. 2018. Gridded Population of the World, Version 4 (GPWv4): Population Density, Revision 11. NASA Socioeconomic Data and Applications Center (SEDAC). Licensed under CC BY 4.0. Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). doi:10.7927/H49C6VHW. CC BY 4.0
  • ASTER GDEM is a product of METI and NASA (ASTER Global Digital Elevation Model V003, NASA LP DAAC); imagery via NASA GIBS. Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). Cite as: NASA/METI/AIST/Japan Spacesystems and U.S./Japan ASTER Science Team (2019). ASTER Global Digital Elevation Model V003. doi:10.5067/ASTER/ASTGTM.003. NASA open data
  • Made with Natural Earth. Free vector and raster map data @ naturalearthdata.com. Public domain
  • © OpenStreetMap contributors (ODbL), via NASA GIBS (coastlines, boundaries, roads and place names). Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). ODbL
  • Blue Marble, NASA Earth Observatory; imagery via NASA GIBS. Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). NASA open data
  • Context on the globe and flat map: coastlines, boundaries, roads and place names from NASA GIBS reference layers (OpenStreetMap data, ODbL, © OpenStreetMap contributors); Blue Marble imagery as an optional base; 3D terrain and the elevation read-out from the ASTER GDEM elevation colour index (5 m to 200 m classes, exaggerated for legibility). Boundaries are drawn as published and imply no position on any territory.
  • Globe: MapLibre GL JS 6.9.1, BSD-3-Clause, © MapLibre contributors.
  • Live events: NASA Earth Observatory Natural Event Tracker (EONET); events are indicative and keep their original source links.
  • Live: U.S. Geological Survey Events are indicative, not authority warnings.
  • NASA GIBS: We acknowledge the use of imagery provided by services from NASA's Global Imagery Browse Services (GIBS), part of NASA's Earth Science Data and Information System (ESDIS).
  • River discharge forecast, 30 days with range (GloFAS via Open-Meteo): Contains modified Copernicus Emergency Management Service information 2026; not a flood warning.
  • Weather data by Open-Meteo.com (https://open-meteo.com/), licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/).
  • Optional layers (11 sources in the layer list: live, forecast, observed and context) print their provider credit on the map and here when switched on; forecasts are model output and derived indices are estimates.

Layers and dates

  • Night-time lights, daily: VIIRS Black Marble (VNP46A2), NASA LAADS DAAC · 12 Oct 2026
  • Flood water, 3-day composite: VIIRS Global Flood Product, NASA LANCE · 14 Oct 2026
  • Active fires and thermal anomalies: VIIRS NOAA-20 375 m (FIRMS), NASA LANCE FIRMS · 13 Oct 2026
  • Population density, 2020: Population: CIESIN, Columbia University, Gridded Population of the World v4.11 (2018), NASA SEDAC, CC BY 4.0 · static
  • True colour: VIIRS NOAA-20 corrected reflectance, NASA LANCE · 13 Oct 2026

04The subject

The subject, methods and measures and debates and bodies

The field and its scope

For engineers, utility planners, regulators and emergency managers who need to rank lifeline assets, trace how a failure in one system propagates into others, and set restoration priorities before an event.

05The method

From a lost feeder to a resilience loss: the functionality curve and the cascade behind it

A disruption drops a lifeline's functionality by a measurable share; the hours it takes to climb back set the area of the resilience triangle; every asset that depends on the lifeline adds its own triangle, and the restoration plan is where the decision sits.

Sources: Bruneau et al., A framework to quantitatively assess and enhance the seismic resilience of communities (2003); Rinaldi, Peerenboom and Kelly, Identifying, understanding, and analysing critical infrastructure interdependencies (2001); Hosseini, Barker and Ramirez-Marquez, A review of definitions and measures of system resilience (2016); Hallegatte, Rentschler and Rozenberg, Lifelines: The Resilient Infrastructure Opportunity (2019).

06Signature

How critical infrastructure and lifelines connects the sectors

Select corners to build a signature, then hover a line to read what each sector gives and receives.

Select corners · hover lines6 / 15 relations

Context

Infrastructure and its partners

Infrastructure gives pipes, dams and treatment works to water (0.6), transmission and fuel logistics to energy (0.6) and access to care to health (0.5).

W · E · I · F · H · B

Sectors
4 of 6
Relations
6 of 15
Coupling
0.46 share of total

Strongest relations in play

  • Energy → Infrastructure · power for transport and telecoms0.8
  • Water → Energy · cooling water and hydropower0.6
  • Infrastructure → Water · pipes, dams and treatment works0.6
  • Water → Health · drinking water and sanitation0.7
Teaching values for a typical city-region, not measurements for any place. Coupling is the summed strength of the relations in play, as a share of all fifteen.
07At a glance

At a glance, with 5 related topics

Critical infrastructure and lifelines at a glance

risksacademy.cominfrastructure-energydiscipline

Critical infrastructure and lifelines: 0 primary courses open, 1 in preparation and 6 also taught here, across 8 subtopics and 2 connected disciplines. Courses: RAN-318 L2 in preparation, RAF-113 L1 also taught here, RAN-306 L2 also taught here, RAN-311 L2 also taught here, RAS-401 L2 also taught here, RAS-405 L2 also taught here, RAS-407 L3 also taught here.
Critical infrastructure and lifelines at a glance
  • Open, 0
  • In preparation, 1
  • Also taught here, 6
  • Subtopics, 8
Course codes from the curriculum; study levels L1 to L4.
Twin builderBuild a twin of any placeWorked example: Wellington and its harbour · 4 generators · 10 layers · 2 instruments
08Labs

How the subject is practised in labs

LabWhat you do in itCourses using it
Network labBuild dependency graphs, find critical nodes, trace cascades6
Map labRead hazard, exposure and boundaries on real maps3
Exposure labOverlay people and assets with hazard footprints2
Geo quizCheck spatial reasoning on where hazards and systems meet1
09Console

How Critical infrastructure and lifelines is taught, as a process you can run

Press Play to run this process from this page's own data.

10Practice

Practice, learning and connections

How technology helps and what risk it brings

11Take part

Take part in Infrastructure, Energy and Industry

Start from who you are.

12References

Core references and where to begin

Start with Rinaldi, then Hallegatte, then Hosseini.

13Questions

Questions, answers and key terms

Is study here free?
Yes. Every course and learning material of Risk Academy, led by the Nexus Consortium, is free to study, self-paced or with a cohort. Ordinary participation has no fee; paid work, internships and fellowships are separate arrangements.
What does completing a course give me?
A completion record: the course, its version, the date and what was assessed, private by default and shared by you. It stacks into discipline, department and programme achievements. A record states what was studied and assessed and does not certify competence; it is not a licence, a professional title or an employment status.
Where do the data and the places come from?
Every faculty teaches on a twin of a real place built from open data; each layer carries its provider, licence and date, and every result on the Academy states its source. Maps and figures are indicators for teaching, never an assessment of a place.
How do I take part beyond the courses in critical infrastructure and lifelines?
Form a competence cell of three to seven people, study a shared pathway, take a supervised assignment in the National Working Groups, or bring a cohort from your institution. For organisations.

Key terms

Term

Criticality

The importance of an asset or service, judged by the consequences of its loss.

Term

Interdependency

A two-way relationship in which the state of one infrastructure depends on another, through physical, cyber, geographic or logical links.

Term

Cascading failure

A failure in one system that triggers failures in dependent systems.

Term

Restoration time

The time needed to return a service to an agreed level after disruption.

ReportsContribute

Contribute evidence from this page.

Reports is the Consortium's quarterly publication. What you know about this subject can become evidence, a case or a correction in the next edition, credited to you and published under CC BY 4.0 where it is your own work.

Risk Academy
Critical infrastructure and lifelines

Start with an open course

The catalogue lists each course with its outcomes, labs, hours and level.

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Courses · practice · credentials

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Independence

Editors and the expert reviewers named on each article decide what we publish. Funders and partners do not review or approve articles before publication.

Licence

Articles: CC BY 4.0. Figures, maps, twins and data: CC BY 4.0. Other uses: ask through the permissions form.