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Nexus Reports · The Global Centre for Risk and Innovation · Baseline Edition 2026
Nexus Global Sector Report · GS-01
The state of the world’s water system, access, scarcity, extremes and the couplings to energy, food, health and nature, at the 2026 baseline
The record
About this edition
The first annual edition of the global water report. It fixes the 2026 reference state of the world’s water system, and the model, voice and positions, against which the 2027 water edition and every national water chapter will be read.
What this edition is
A baseline: the state of water access, scarcity, groundwater, glaciers and extremes in 2026, and the couplings through which water carries risk into energy, food, health and nature. It synthesises published global evidence; it ranks no country or basin.
What it is not
Not a water-stress ranking, an allocation recommendation or an assessment of any utility, basin authority or government. Water rights and management rest with national and local authorities and basin organisations.
What comes next
National water chapters and basin evidence feed the 2027 water edition through the Nexus federation. Each edition reports what changed against this baseline, observations, source revisions, method changes, scenario updates and corrections.
Abstract and decision surface
Abstract
The world enters 2027 with a water system under strain from both ends. In 2022, 2.2 billion people still lacked safely managed drinking water and 3.5 billion lacked safely managed sanitation [1]; roughly half of the world’s people experience severe water scarcity for at least part of the year [2]. 2023 was the driest year for the world’s rivers in 33 years, and glaciers lost more than 600 gigatonnes of water, the largest annual loss in five decades [5]. Floods, storms and wildfires caused US$166 billion of 2025’s disaster losses [7], while freshwater wildlife populations have fallen by 85% on average since 1970 [17]. Agriculture takes about 70% of withdrawals [2], so water stress travels directly into food prices, hydropower, health and ecosystems. This Baseline Edition fixes the 2026 reference state of the global water system, maps its couplings to energy, food, health and nature, and sets the questions the 2027 edition will answer from basin and national evidence. It ranks no country or basin.
Headline finding
In 2022, 2.2 billion people lacked safely managed drinking water and 3.5 billion lacked safely managed sanitation, and 2 billion lacked basic hygiene facilities at home.
Source: WHO/UNICEF JMP 2023 [1].
Implication
Service gaps concentrate in low-income, rural and fragile settings, where they compound health, education and gender inequalities and leave households most exposed when drought or flood strikes. Closing them is also climate adaptation [1] [10].
At a glance
Six readings that frame the water baseline, and the eight questions this edition answers, each with its status and source.
Who lacks safe water?
2.2 billion people lacked safely managed drinking water and 3.5 billion safely managed sanitation in 2022. [1]
REPORTED
How widespread is scarcity?
Roughly half of the world’s people face severe scarcity for part of each year. [2] [22]
REPORTED
Is the water cycle changing?
2023 was the driest year for rivers in 33 years; glaciers lost more than 600 Gt. [5]
REPORTED
What about groundwater?
It supplies about half of domestic water, and declines have accelerated in many aquifers. [4] [20]
REPORTED
How does water drive food risk?
Agriculture uses about 70% of withdrawals; drought cuts yields and raises prices. [2] [15]
REPORTED
How does water drive energy risk?
Hydropower and thermal cooling depend on flows; drought cuts both. [14]
INFERRED
How healthy is freshwater nature?
Freshwater wildlife fell by 85% on average since 1970; wetlands shrank by 22%. [17] [18]
REPORTED
What will 2027 test first?
A multi-basin drought cutting hydropower and irrigated yields at once. SCN-GS01-MBD-01
EXPERT INPUT
Systems dashboard
WATWater
People without safely managed drinking water
2.2billion
and 2 billion without basic hygiene services at home.
REPORTED2022JMP [1]
ENEEnergy
Share of global freshwater withdrawals for energy
≈10%
mostly cooling for thermal power; hydropower adds storage and flow dependence.
REPORTED2014IEA [14]
FOOFood
Share of withdrawals used by agriculture
≈70%
Irrigated land produces a large share of the world’s food from a minority of cropland.
HLTHealth
Deaths attributable to unsafe water, sanitation and hygiene
1.4million
in 2019, most of them from diarrhoeal disease.
REPORTED2019WHO [38]
BIOBiodiversity
Average decline of freshwater wildlife populations
−85%
1970–2020, the steepest decline of any realm.
REPORTED1970–2020WWF [17]
SYSCross-system
Driest year for global rivers in 33 years
2023
Glaciers lost more than 600 Gt of water in the same year.
REPORTED2023WMO [5]
Key findings
Twelve findings carry the water baseline. They are grouped by coupling, never ranked. Each resolves to its source or, where Nexus analysis is involved, to its stated method.
WATWater
2.2 billion people lacked safely managed drinking water and 3.5 billion lacked safely managed sanitation in 2022. [1]
Roughly half of the world’s population experiences severe water scarcity for at least part of the year. [2] [22]
Global water use has grown by about 1% a year over the past forty years. [3]
2023 was the driest year for global rivers in 33 years, and glaciers lost more than 600 Gt of water. [5]
Groundwater supplies about half of domestic withdrawals and about a quarter of irrigation water; declines have accelerated in many aquifers. [4] [20]
FOOFood
ENEEnergy
Energy production accounts for about 10% of global freshwater withdrawals, mainly for cooling thermal power plants. [14]
HLTHealth
Unsafe drinking water, sanitation and hygiene caused about 1.4 million deaths in 2019. [38]
BIOBiodiversity
CLIClimate forcing
Floods, severe storms and wildfires caused US$166 billion of the US$224 billion in natural-disaster losses in 2025. [7]
GOVGovernance
153 countries share transboundary rivers, lakes or aquifers; most do not yet have operational arrangements covering all of them. [9]
SYSSystemic
The leading compound pathway for 2027 testing is a multi-basin drought that cuts hydropower and irrigated yields at once while heat raises demand. § scenario
Part I · lead chapter
Water is usually reported as a sector: utilities, irrigation, flood defence. The 2026 evidence reads it as the medium through which almost every other system’s risk travels. Agriculture takes about 70% of withdrawals [2], thermal power plants and hydropower depend on flows [14], disease follows unsafe water [38], and freshwater ecosystems are declining faster than any other realm [17].
Access is still unfinished. In 2022, 2.2 billion people lacked safely managed drinking water, 3.5 billion lacked safely managed sanitation and 2 billion lacked basic hygiene facilities at home [1]. At current rates the world will not reach the 2030 targets for water and sanitation [10]. Unsafe water, sanitation and hygiene were linked to about 1.4 million deaths in 2019, most of them from diarrhoeal disease [38].
Scarcity is now a seasonal condition for half of humanity. Roughly half of the world’s people experience severe water scarcity for at least part of the year [2] [22], and global water use has risen by about 1% a year for four decades [3]. About 739 million children live in areas of high or extremely high water scarcity [39].
The water cycle itself is shifting. 2023 was the driest year for global rivers in 33 years, and glaciers lost more than 600 gigatonnes of water, the largest loss in five decades [5]. Glacier mass loss has accelerated this century [21], and groundwater declines have accelerated in many of the world’s aquifers [20]. Groundwater supplies about half of domestic water and a quarter of irrigation [4].
Extremes carry the costs. Floods, severe storms and wildfires caused US$166 billion of the US$224 billion in natural-disaster losses in 2025 [7]. Drought is less visible in loss data, but it moves through food prices, hydropower output and public budgets. Water scarcity could cost some regions up to 6% of GDP by 2050 [35].
Governance is shared and incomplete. 153 countries share transboundary rivers, lakes or aquifers, but most do not yet have operational arrangements covering all of them [9]. The December 2026 UN Water Conference is the first chance since 2023 to set a common direction [43].
This edition therefore reads water as the coupling layer of the WEFH+B system. The matrix, risk objects, capability ladder and scenario that follow ask the same two questions: where does a water shock travel next, and who holds the capability to stop it?
More people lack safe sanitation than safe drinking water. All three gaps are concentrated in the same places, low-income, rural and fragile settings, so they compound each other’s health effects [1].
Dependency network
The water-centred matrix types the twenty couplings between the five core systems, read for their water content. Strengths are Nexus estimates from the cited assessments and analogue events; they set the graph that basin evidence will test in 2027.
Select a system
Each line is one coupling, weighted by the strength the edition assigns. Strengths are Nexus estimates from the cited evidence and analogue events.
| WAT | ENE | FOO | HLT | BIO | |
|---|---|---|---|---|---|
| WAT Water | · | STRONGhydro · thermal cooling | STRONGirrigation · rain-fed yield | STRONGsafe water · sanitation | STRONGflows · wetlands |
| ENE Energy | MODERATEpumping · treatment · desalination | · | STRONGfuel · fertiliser · cold chain | STRONGair pollution · cooling | MODERATEland use · mining |
| FOO Food | STRONG≈70% of withdrawals | WEAKbioenergy feedstock | · | STRONGnutrition · food safety | STRONGland conversion |
| HLT Health | WEAKworkforce | WEAKworkforce | MODERATElabour · disease | · | WEAKresidues |
| BIO Biodiversity | STRONGregulation · filtration | MODERATEbiomass · hydrology | STRONGpollination · soils | MODERATEzoonoses · medicines | · |
Transmission paths
Reinforcing loops · both directions rated strong
A shock entering either system of a loop returns amplified through the other. A causal-loop reading of the matrix (Sterman, Business Dynamics, 2000): structural, from estimated strengths, not a measured feedback.
Domain posture
Each of the twelve coupled domains is read through water, in words, not scored. The coupling column names the dependency that carries water risk into each domain.
| Domain | Posture at baseline | Coupling | Status |
|---|---|---|---|
| WAT | Access unfinished; scarcity seasonal for half of humanity; groundwater and glaciers declining. | the core system | REPORTEDEQL 4 |
| ENE | About 10% of withdrawals; hydropower and thermal cooling exposed to low flows and heat. | WAT → ENE | REPORTEDEQL 3 |
| FOO | About 70% of withdrawals; irrigated yields depend on groundwater and glacier-fed rivers. | WAT → FOO | REPORTEDEQL 4 |
| HLT | 1.4 million WASH-attributable deaths in 2019; floods spread water-borne disease. | WAT → HLT | REPORTEDEQL 4 |
| BIO | Freshwater wildlife down 85%; wetlands down 22% since 1970. | WAT ↔ BIO | REPORTEDEQL 4 |
| CLI | Drier rivers, faster glacier loss and more intense extremes with warming. | CLI → WAT | REPORTEDEQL 5 |
| INF | Ageing networks, storage and flood defences; inland shipping exposed to low water. | WAT ↔ INF | INFERREDEQL 3 |
| FIN | Flood losses large and often uninsured; water scarcity could cost some regions up to 6% of GDP by 2050. | WAT → FIN | REPORTEDEQL 3 |
| DAT | Water monitoring data are sparse for groundwater and quality. | DAT → WAT | EXPERT INPUTEQL 2 |
| AIC | Data centres add cooling-water demand; volumes not consolidated globally. | AIC → WAT | EXPERT INPUTEQL 2 |
| MIN | Mining and refining use and pollute water in already stressed basins. | MIN → WAT | INFERREDEQL 2 |
| TRD | Food trade moves “virtual water”; export restrictions follow droughts. | WAT → TRD | INFERREDEQL 3 |
Sector screens
All sixteen sectors are screened for their dependence on water, on the same grammar as every national edition. The evidence column describes coverage of the baseline evidence, not the performance of the sector.
| Code | Sector | Baseline evidence | Exposure to watch | Evidence coverage |
|---|---|---|---|---|
| GS-00 | Cross-system | water couples all five core systems [46] | multi-basin drought | PARTIAL |
| GS-01 | Water | access gaps; seasonal scarcity for half of humanity [1] [2] | drought, flood, depletion | GOOD |
| GS-02 | Energy | about 10% of withdrawals [14] | low flows and hot cooling water | PARTIAL |
| GS-03 | Food | about 70% of withdrawals [2] | aquifer decline; drought | GOOD |
| GS-04 | Health | 1.4 million WASH deaths, 2019 [38] | water-borne disease after floods | GOOD |
| GS-05 | Finance | up to 6% of GDP at stake in some regions [35] | uninsured flood losses | PARTIAL |
| GS-06 | Development | 739 million children in high scarcity [39] | access gaps in fragile settings | PARTIAL |
| GS-07 | Climate | driest year for rivers in 33 years [5] | glacier loss; intensifying extremes | GOOD |
| GS-08 | Disaster | floods among the costliest perils [7] | concurrent floods and droughts | GOOD |
| GS-09 | Infrastructure | ageing water networks and dams | failure and low-water navigation | THIN |
| GS-10 | Cities | urban demand rising fastest | shortage and pluvial flooding | PARTIAL |
| GS-11 | Biodiversity | freshwater wildlife −85% [17] | flow alteration; pollution | GOOD |
| GS-12 | Earth observation | satellite gravimetry tracks storage [19] | continuity of missions | PARTIAL |
| GS-13 | Cyber and digital | control systems for utilities | attacks on water systems | THIN |
| GS-14 | Policy | 153 countries share basins [9] | arrangements incomplete | PARTIAL |
| GS-15 | Science | deep hydrological science | groundwater and quality data | PARTIAL |
Risk portfolio
Four water risk objects open the portfolio. Order carries no rank. Each is read across driver, exposure, vulnerability, capacity, cascade and consequence.
Capability ladder
Existence is not readiness. Each of the fifteen capability functions is placed on the ladder by the strongest public evidence for water at the global level.
Ladder: LISTED, EXISTS, DEMONSTRATED, TESTED. A capability listed in policy is not a tested one; each rung is the strongest public evidence at baseline.
Scenario · SCN-GS01-MBD-01
A conditional statement under stated assumptions, never a prediction.
Assumptions
Cascade, step by step
How the shock in scenario SCN-GS01-MBD-01 would travel through Global Water's coupled systems, step by step, under the assumptions the edition states.
Low precipitation and heat cut river flows and reservoir inflow. Analogue or source: 2022. Edition GS-01, scenario SCN-GS01-MBD-01, step 1
The cascade of scenario SCN-GS01-MBD-01 as a playable chain of couplings, one step at a time.
A teaching model of a conditional scenario under the edition's stated assumptions: not a forecast, not a prediction and not a warning.
Sources: Global Water 2026, scenario SCN-GS01-MBD-01 (2026); Global Water 2026, references (NR-CIT-1) (2026).
Three lenses
The water baseline is read through each steward’s lens, then once as a whole. Each lens is a projection of reviewed findings, not a separate argument.
GCRI · KEY T
The evidence supports reading water as the coupling layer of the WEFH+B system. Access remains unfinished, scarcity is seasonal for half of humanity, and the cycle is shifting: drier rivers, faster glacier loss and declining aquifers. Evidence is strongest for access and hydrology, and weakest for groundwater and quality.
WAT-001 · WAT-004 · WAT-005 · SYS-012
GRF · KEY M
For most people water risk arrives as a dry tap, a flooded street or a higher food price. The baseline asks that public debate treat water as shared infrastructure for health, food and energy, and that the 2.2 billion without safe water stay at its centre.
WAT-001 · HLT-008 · FOO-006
GRA · KEY F
Readiness implications only. Flood losses are large and often uninsured, water investment falls short of need [36], and nature-related disclosure is spreading [32]. These show where finance-readiness evidence will matter. Nothing here is advice, a rating or an approval.
CLI-010 · WAT-002
NEXUS
The water system is well studied and thinly governed at the scale where its risks travel. The 2027 programme should bind basin evidence, test the multi-basin drought pathway, and map groundwater dependence before it becomes a food shock.
SYS-012 · W-01 · W-02
The Global Centre for Risk and Innovation reading
2027 agenda
Eight bounded questions open the 2027 water agenda. Each comes from a baseline finding, names the initiative that will carry it and the first output due in the 2027 water edition.
How would a multi-year drought across several major basins affect hydropower, irrigated yields and urban supply at the same time?
Where are the major irrigated aquifers declining fastest, and how much food production depends on them?
How much water will data centres and the energy transition need by 2030, and where?
How fast are glacier-fed basins approaching peak water, and who depends on their summer flows?
Where do flood losses fall on the uninsured, and which capabilities reduce them?
Which transboundary basins lack operational arrangements where stress is rising?
How do water quality and wastewater gaps couple to health in fast-growing cities?
Which water capabilities have been tested in real droughts and floods, and which are only planned?
Portfolio proposed for the Q1 2027 alignment
Five initiatives and one Universe mission candidate are proposed for the 2027 water portfolio. They are programme objects, no partner, funder or member is attached to them in this edition.
| ID | Object | Kind | Question | State |
|---|---|---|---|---|
| INI-GS01-MBD-01 | Multi-basin drought concurrency | Initiative | W-01 | PROPOSED |
| INI-GS01-GWT-02 | Groundwater dependence of food production | Initiative | W-02 | PROPOSED |
| INI-GS01-ENE-03 | Water for energy and compute | Initiative | W-03 | PROPOSED |
| INI-GS01-CRY-04 | Glacier-fed basin dependence | Initiative | W-04 | PROPOSED |
| INI-GS01-FLD-05 | Flood protection gap | Initiative | W-05 | PROPOSED |
| MSN-GS01-2027-01 | Multi-basin drought Universe mission | Mission | W-01 | CANDIDATE |
The pathway
The water edition reads national water chapters, regional basin evidence and the global edition through one governed evidence graph. At baseline the federation is designed; Canada’s and the global water chapters are issued.
National water chapters
water system of each national edition
Basin and regional evidence
shared basins and aquifers
Water sector model
the global water system of systems
Global and strategic links
GLB · SR-07 food–water–energy · SR-09 boundaries
Nexus Universe
annual proving environment
Global Water Report
this series
Evidence and correction
one graph, many projections
System chapter
Energy uses water and water uses energy. Hydropower and thermal cooling make power supply sensitive to drought and heat; pumping, treatment and desalination make water supply sensitive to energy prices.
State at baseline
| Component | State | Evidence | Status |
|---|---|---|---|
| Hydropower | output falls with low flows and storage | [5] [14] | REPORTED |
| Thermal cooling | curtailment when water is scarce or too warm | [14] | REPORTED |
| Water for compute | cooling demand rising; volumes not consolidated | [13] | EXPERT INPUT |
| Energy for water | pumping, treatment and desalination | [14] | REPORTED |
Couplings
Evidence to bind in 2027
System chapter
Food is the largest user of water. Irrigated agriculture depends on groundwater and on glacier- and snow-fed rivers, both of which are declining in key regions.
State at baseline
| Component | State | Evidence | Status |
|---|---|---|---|
| Irrigation | about 70% of withdrawals | [2] [15] | REPORTED |
| Groundwater | declines accelerating in many irrigated aquifers | [20] | REPORTED |
| Rain-fed yields | exposed to drought and heat | [12] | REPORTED |
| Trade | food trade moves virtual water between basins | [23] | INFERRED |
Couplings
Evidence to bind in 2027
System chapter
Unsafe water, sanitation and hygiene remain a leading preventable cause of death. Floods spread disease; drought concentrates contaminants and strains hygiene.
State at baseline
| Component | State | Evidence | Status |
|---|---|---|---|
| Diarrhoeal disease | most WASH-attributable deaths | [38] | REPORTED |
| Floods | contamination and disease after events | [12] | REPORTED |
| Drought | water quality and hygiene strain | [12] | INFERRED |
| Health facilities | many lack basic water services | [1] | REPORTED |
Couplings
Evidence to bind in 2027
System chapter
Freshwater ecosystems regulate floods, filter water and sustain fisheries, and they are declining faster than any other realm.
State at baseline
| Component | State | Evidence | Status |
|---|---|---|---|
| Species | freshwater populations declining fastest | [17] | REPORTED |
| Wetlands | more than a fifth lost since 1970 | [18] | REPORTED |
| Flows | dams and withdrawals alter river regimes | [12] | REPORTED |
| Services | flood regulation and filtration weakened | [47] | INFERRED |
Couplings
Evidence to bind in 2027
System chapter
Floods are among the costliest perils, and droughts strain fast-growing cities. Urban water systems sit where extremes and demand meet.
State at baseline
| Component | State | Evidence | Status |
|---|---|---|---|
| Floods | among the costliest and most frequent perils | [7] [24] | REPORTED |
| Urban drought | supply crises in large cities | [2] | REPORTED |
| Early warning | flood warning demonstrated in real events | [33] | REPORTED |
| Protection gap | flood losses often uninsured | [7] | INFERRED |
Couplings
Evidence to bind in 2027
Process
Press play to run the release step by step in the five pillar lanes; select a step to read it.
Every edition is built from a sealed evidence cut, reviewed under three keys, signed and deposited before any site shows it as published; corrections go to Nexus Standards as change proposals and feed the next cut.
Nexus Foundry seals observations and indicator series, Nexus Universe hands over after-action and scenario findings, and contributions are screened at every gateway, including this site's.
The quarterly release in the five pillar lanes: what Foundry and Universe hand to Reports, what Reports seals, reviews, signs, deposits and publishes, and what returns to Standards.
A teaching model of the process, not a forecast and not a record of any run; dates and counts on this page come from the programme record.
Sources: Nexus Reports governance at GCRI Canada (2026); Zenodo, repository of record for Nexus Reports deposits (2026).
How a contribution reaches this edition, step by step, is on the contribute page and the front page of this site. Contribute
Open science
Identifiers, licences and the bundle at deposit; credit by ORCID, ROR and CRediT; the open indexes; and a deposit prefilled for a contribution to this edition.
Search the open indexes for Global Water; software is cited by its SWHID from Software Heritage, and a quantified scenario run is preregistered on OSF before it is run. Annotation is your choice: Hypothesis opens this page in its own viewer.
The DOI is canonical. At release each signed bundle is also given an IPFS content identifier and a bloxberg anchor as mirrors; both are listed in the record once they exist. Zenodo exposes every record over OAI-PMH, and reviews and endorsements can arrive through COAR Notify where the repository supports it.
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What is on this site now, what ships with the signed bundle at release, and what is not recorded for this edition; then the chain the outputs come from and how to cite each one.
| Format | State | What it is | Identifier |
|---|---|---|---|
| Web editionHTML | On this site | Draft in stewardship review; every value resolves to its source. | NR-SECTOR-WATER-GLOBAL-2026-BASELINE-v1.0.0 |
| Print editionPDF | At release | A4 portrait · screen, print and archival PDF, signed with the web edition at release. | NR-SECTOR-WATER-GLOBAL-2026-BASELINE-v1.0.0 |
| Indicator dataCSV · JSON | On this site | 18 indicators with unit, year, status and source; the machine-readable copy ships with the evidence bundle at release. | NR-SECTOR-WATER-GLOBAL-2026-BASELINE data release v1 |
| FiguresSVG · PNG | On this site | 4 on the web edition: headline figure, figure 1.3, coupling instrument, capability ladder. | FIG-SECTOR-WATER-GLOBAL-2026-BASELINE-* |
| SlidesPDF | Not recorded | No slide deck is recorded for this edition. | |
| Evidence briefHTML · PDF | Not recorded | No evidence brief is recorded for this edition. | |
| Dataset with DOIDataCite | At release | Concept and version DOI are minted at deposit; none is recorded yet. |
Provenance
Cite it
Indicator data
| Indicator | Value | Unit | Year | State | Source |
|---|---|---|---|---|---|
| Without safely managed drinking water | 2.2 | billion | 2022 | REPORTED | [1] |
| Without safely managed sanitation | 3.5 | billion | 2022 | REPORTED | [1] |
| Without basic hygiene | 2.0 | billion | 2022 | REPORTED | [1] |
| Severe scarcity for part of the year | ≈50 | % of people | recent | REPORTED | [2] |
| Growth in global water use | ≈1 | % a year | last 40 years | REPORTED | [3] |
| Agriculture share of withdrawals | ≈70 | % | recent | REPORTED | [2] |
| Energy share of withdrawals | ≈10 | % | 2014 | REPORTED | [14] |
| Groundwater share of domestic use | ≈50 | % | recent | REPORTED | [4] |
| Groundwater share of irrigation | ≈25 | % | recent | REPORTED | [4] |
| Glacier water lost | 600+ | Gt | 2023 | REPORTED | [5] |
| WASH-attributable deaths | 1.4 | million | 2019 | REPORTED | [38] |
| Children in high water scarcity | 739 | million | 2022 | REPORTED | [39] |
| Freshwater wildlife change | −85 | % | 1970–2020 | REPORTED | [17] |
| Wetland area lost | 22 | % | since 1970 | REPORTED | [18] |
| Countries sharing transboundary waters | 153 | countries | 2023 | REPORTED | [9] |
| Flood, storm and fire losses | 166 | US$ billion | 2025 | REPORTED | [7] |
| GDP at stake in some regions | up to 6 | % of GDP | by 2050 | ESTIMATED | [35] |
| Global mean temperature | 1.43 | °C | 2025 | REPORTED | [6] |
Six pillars
Nexus Foundry seals the evidence and Nexus Universe tests it; Nexus Reports publishes it; Nexus Standards takes its corrections and Risk Academy teaches from it.
| Handoff | Between | What crosses, and when |
|---|---|---|
| F03 | Nexus Foundry to Nexus Reports | Sealed observations and indicator series behind a profile (closeout). |
| F04 | Nexus Universe to Nexus Reports | After-action and scenario findings for chapters 10 and 13 (after action review). |
| F05 | Nexus Foundry to Nexus Reports | National Portfolio movement for chapter 11 (after action review). |
| Ring | Nexus Standards to Nexus Reports | Nexus Standards: applied in editions. |
| F06 | Nexus Reports to Nexus Standards | Method and correction findings as change proposals (correction). |
| F12 | Nexus Reports to Nexus Universe | Q4 synthesis informs the next-year mandate (renewal). |
| Ring | Nexus Reports to Risk Academy | Risk Academy: taught in the open. |
Corrections log
A correction is a new version with a published notice; the earlier version stays resolvable.
0correction notices. No edition has been released yet, so none can be corrected; the log below lists each edition's current version.
| Edition | Version | Date | State | Change | Notice |
|---|---|---|---|---|---|
| GS-01 | NR-SECTOR-WATER-GLOBAL-2026-BASELINE-v1.0.0 | October 2026 | Draft | Baseline Edition 2026, inaugural annual edition | None |
Notice types: erratum, addendum, supersession, withdrawal. A correction is a new version with a published notice; the earlier version stays resolvable, and no edition is ever edited in silence.
References · NR-CIT-1
Publication record
Publication
Publisher
Colophon
Release path for this version
Release path for this version
| Step | What happens | When |
|---|---|---|
| Draft | editorial self-check complete at evidence close | October 2026 |
| Steward review | five passes on the exact draft (keys T · M · F · N) | Q4 2026 |
| Approval | publication authority approves the exact digest | before release |
| Deposit | concept and version DOI minted; registry pointer set | at release |
| Succession | the 2027 water edition reports changes against this baseline | 2027 |
A reading aid: the sectors the findings run through and how strongly they depend on each other.
Signature
Water and its partners
Water gives irrigation to food (0.8), cooling water and hydropower to energy (0.6) and environmental flows to biodiversity (0.6).
W · E · I · F · H · B