- Switzerland 2026
- Chapter 4
Risks and capability
Four risk objects open the portfolio. Order carries no rank. Each is read across driver, exposure, vulnerability, capacity, cascade and consequence.
Contents
- ·Edition home
- ·Executive summary
- 1Switzerland’s risk starts in the mountains and runs through water
- 2Key findings
- 3Systems and sectors at baseline
- 4Risks and capability
- 5Dry year with low reservoirs and low river flows
- 6Readings from the other desks
- 7The 2027 agenda
- 8Systems in depth
- AMethodology
- BData appendix
- CReferences and record
- ·Complete edition, for print
4.1Risk objects
Each risk is read across the chain from hazard to consequence, with its status and evidence-quality level.
ReportedEQL 4RSK-CHE-CLI-001
Dry year with low reservoirs and low river flows
- Driver
- snow deficit, dry spring and heat across the Plateau and the Alps
- Exposure
- hydropower, river and lake levels, pastures, forests
- Vulnerability
- winter import dependence; thin groundwater monitoring22
- Capacity
- reservoir storage reported weekly8; reserve status not bound
- Cascade
- CLI → WAT → ENE, FOO, BIO, FIN
- Horizon
- 1–5 years
ReportedEQL 3RSK-CHE-CLI-002
Rock, ice or debris avalanche above a settlement
- Driver
- rock failure, glacier load and permafrost change
- Exposure
- Alpine villages, roads, rail and power lines
- Vulnerability
- settlements in the run-out zone; a scenario of 5 million m³ is analysed24
- Capacity
- monitoring and evacuation worked at Blatten; one death outside the zone1415
- Cascade
- CLI → WAT → INF, FIN
- Horizon
- annual
ReportedEQL 3RSK-CHE-HLT-003
Heatwave load on health services and older residents
- Driver
- hotter summers and tropical nights
- Exposure
- cities and Ticino, which was particularly affected in 202417
- Vulnerability
- ageing population2
- Capacity
- heat-mortality monitoring runs to July 202617
- Cascade
- CLI → HLT → ENE peak
- Horizon
- seasonal
InferredEQL 2RSK-CHE-ENE-004
Prolonged winter power shortage
- Driver
- low reservoirs, import limits and plant outages
- Exposure
- households, industry, rail, health facilities
- Vulnerability
- winter demand above domestic generation
- Capacity
- national risk analysis treats a 30% shortfall for 12 weeks24
- Cascade
- ENE → all
- Horizon
- seasonal
4.2Capability ladder
Existence is not readiness. Each of the fifteen capability functions is placed on the ladder by the strongest public evidence at baseline.
| Function | Rung | Level | Strongest public evidence at baseline |
|---|---|---|---|
| Prevention and mitigation | LISTED | Climate and Innovation Act sets net zero by 2050 and interim targets438 | |
| Monitoring and observation | EXISTS | federal drought platform, hydrological and glacier monitoring used in this edition131922 | |
| Early warning | NOT BOUND | source: MeteoSwiss and federal natural hazard portal warning records · blocker: not reviewed by evidence close | |
| Preparedness and planning | EXISTS | national risk analysis with 44 hazard dossiers published in 202624 | |
| Redundancy and reserves | EXISTS | reservoir storage reported weekly and covering about 20% of winter-half demand8; winter reserve status not bound | |
| Response | NOT BOUND | source: cantonal and federal civil protection event reports · blocker: not reviewed | |
| Continuity of critical services | NOT BOUND | source: grid, rail and road operator restoration records for Blatten · blocker: not retrieved | |
| Recovery | EXISTS | insurers had paid more than 80% of insured sums for total losses about four months after Blatten16 | |
| Adaptation | LISTED | adaptation strategy 2026–2031 with 30 areas of action adopted 28 October 2026, after evidence close32 | |
| Social protection | NOT BOUND | source: federal and cantonal social-protection programme data · blocker: not reviewed | |
| Finance and insurance | EXISTS | private insurers’ natural hazard pool covered Blatten losses16 | |
| Institutional coordination | LISTED | Confederation, cantons, communes and operators named as joint actors in the national risk analysis24 | |
| Technical infrastructure | NOT BOUND | source: grid, rail and dam asset registers · blocker: not mapped at public-safe resolution | |
| Workforce | NOT BOUND | source: health and civil protection workforce data · blocker: not reviewed | |
| Research capacity | EXISTS | ETH Zurich and WSL glacier, snow and slope research published1421 | |
| A capability listed in policy is not a tested one; each rung is the strongest public evidence at baseline. | |||
Notes
Numbers are the edition’s reference numbers, so a note reads the same in every chapter. The full list, with every source and its licence, is in Annex C. Annex C, references
- 22K. F. Brandt and S. Pasino (eds.), “How much water is left under Switzerland? Nobody can say yet” (more than 80% of drinking water from larger underground sources; 42 monitored springs; whole country at the highest drought danger level on 6 August 2026). swissinfo.ch, 24 August 2026. Observation year 2026. https://www.swissinfo.ch/eng/climate-solutions/how-much-water-is-left-under-switzerland-nobody-can-say-yet/91915172, accessed 2026-11-03. Press report; the federal environment office is the cited source.back
- 8SRF and swissinfo.ch (eds.), “Swiss reservoir water levels lowest in 20 years” (46% full, 16.4 points below the 20-year average, per the SFOE weekly report; reservoirs cover about 20% of winter-half demand). swissinfo.ch, 17 July 2026. Observation year 2026. https://www.swissinfo.ch/eng/climate-adaptation/swiss-reservoir-water-levels-lowest-in-20-years/91760665, accessed 2026-11-03. Press report of SFOE figures.back
- 24Federal Office for Civil Protection (BABS) (ed.), Katastrophen und Notlagen Schweiz 2025: Bericht zur nationalen Risikoanalyse (KNS 2025; 44 hazard dossiers; pandemic and prolonged power shortage the largest risks). BABS, Bern, February 2026. Observation year 2025. https://www.babs.admin.ch/dam/de/sd-web/PpZZg4eroKXo/KNS-2025-Risikobericht-final_de.pdf, accessed 2026-11-03. Report read in part (summary and results chapter).back
- 14D. Farinotti, M. Huss, M. Jacquemart and M. Werder (eds.), Fact sheet for the now-collapsed Birchgletscher, Switzerland, document 88028-VAW-2025-06. VAW, ETH Zurich, Zurich, 2 June 2025. Observation year 2025. https://raonline.ch/pages/edu/pdfNW/VAW_BirchgletscherFS2025.pdf, accessed 2026-11-03.back
- 15Wikipedia contributors, 2025 Blatten glacier collapse (28 May 2025; evacuations from 17 and 19 May; one death outside the evacuation zone). Wikimedia Foundation, 2025–2026. Observation year 2025. https://en.wikipedia.org/wiki/2025_Blatten_glacier_collapse, accessed 2026-11-03. Reference compilation, not a primary source; used for the casualty and evacuation facts only.back
- 17Swiss TPH (ed.), HiMOMO: Monitoring heat-related deaths (542 deaths May to September 2023, 95% interval 364 to 715; 326 deaths May to September 2024, 95% interval 171 to 471). Swiss Tropical and Public Health Institute, Allschwil, for the Federal Office for the Environment, 2023–2026. Observation years 2023–2024. https://www.swisstph.ch/en/projects/project-detail/project/monitoring-heat-related-deaths, accessed 2026-11-03.back
- 2Federal Statistical Office (ed.), provisional population results 2025 (permanent resident population 9,124,300; 1,811,000 aged 65 or over and 1,802,000 under 20), as reported by Keystone-SDA on swissinfo.ch, 2 April 2026. FSO, Neuchâtel, 2026. Observation year 2025. https://swissinfo.ch/eng/demographics/population-the-proportion-of-seniors-exceeds-that-of-young-people-in-switzerland/91200057, accessed 2026-11-03. Press report of the release; provisional figures.back
- 4Switzerland (ed.), Switzerland’s second nationally determined contribution under the Paris Agreement 2031–2035. Federal Office for the Environment for the UNFCCC, Bern, January 2025. Observation years 2022–2035. https://unfccc.int/sites/default/files/2025-01/Switzerland%20second%20NDC%202031-2035.pdf, accessed 2026-11-03.back
- 38UNVERIFIED, not opened: Swiss Confederation (ed.), Federal Act on Climate Protection Targets, Innovation and Strengthening Energy Security (Climate and Innovation Act), SR 814.310. Fedlex, Bern, adopted 30 September 2022; in force 1 January 2025 per [4]. Observation year 2022. Bibliographic details from memory; check against the Fedlex text.back
- 13ETH Zurich (ed.), Swiss glaciers lost almost 3% of their volume in 2025 and about a quarter since 2015 (GLAMOS monitoring, Swiss Commission for Cryosphere Observation), as published by ScienceDaily, 2 October 2025. ETH Zurich, 2025. Observation year 2025. https://www.sciencedaily.com/releases/2025/10/251001092211.htm, accessed 2026-11-03.back
- 19FOEN (ed.), statement to Keystone-SDA on drought: historic lows at eleven stations in July 2026; about one-fifth of stations at a record low for the period from 1 April to 31 July. Published by blue News, 13 August 2026. Observation year 2026. https://www.bluewin.ch/en/news/drought-causes-swiss-water-levels-to-drop-to-record-lows-li.3561545, accessed 2026-11-03. Press report of a federal statement.back
- 16Insurers’ natural hazard pool (ed.), annual financial statements: Blatten landslide, total insured damage CHF 255 million (CHF 240 million within the pool; more than 80% of insured sums for total losses paid after four months), as reported by swissinfo.ch, 26 May 2026. Observation year 2025. https://www.swissinfo.ch/eng/various/blatten-landslide-caused-damage-totalling-255-million-francs/91473640, accessed 2026-11-03. Press report of pool statements.back
- 32POST-CLOSE, context only: Federal Council (ed.), “Le Conseil fédéral adopte la nouvelle stratégie d’adaptation et des mesures relatives à la canicule et à la sécheresse” (strategy 2026–2031; 30 areas of action; 56 measures). Swiss Confederation, Bern, 28 October 2026. Observation year 2026. https://www.admin.ch/fr/newnsb/fb6zlfWM0Cst, accessed 2026-11-03. Published after evidence close.back
- 21WSL Institute for Snow and Avalanche Research SLF (ed.), “The heat is gone, but the drought remains” (interview with M. Brunner; Rhine, Aare and Lake Constance at record lows; snowpack at most half the long-term average in the Dischma Valley). SLF, Davos, 12 June 2026. Observation year 2026. https://www.slf.ch/en/news/the-heat-is-gone-but-the-drought-remains/, accessed 2026-11-03.back
