Climate Resilience: Drought and Flood Risk in Netherlands

Executive overview

Key findings

60%: share of the Netherlands that could be flooded (Rijkswaterstaat)

More than 1 m to 2.5 m: sea-level rise off the Dutch coast by 2100, low- and high-emission KNMI'23 scenarios (projection)

About two-thirds: share of primary flood defences that would need reinforcing again after 2050 if the current strategy continues (projection)

EUR 34–42 billion: funding needed to 2050 for flood safety, freshwater and climate adaptation, against about EUR 29 billion assumed in the Delta Fund (projection)

Buyer relevance

Who the report is for

Infrastructure contractors and engineers

Track the flood and freshwater programmes, from EUR 839 million of HWBP spending planned in 2027 to the IJmuiden replacement estimate of EUR 1.4–2.3 billion.

Insurers, lenders and property investors

Frame long-term asset risk with the official KNMI'23 projections and the finding that 60% of the country could be flooded.

Water boards, provinces and municipalities

See how the review and the draft adaptation strategy shift adaptation towards regional water systems and spatial planning.

Climate risk and policy analysts

Follow the decisions due in late 2026 and 2027, from the final NAS'26 to Deltaplan Zoetwater phase 3.

Decision scope

Questions answered

How much could sea level rise off the Dutch coast?

More than 1 m by 2100 in KNMI's low-emission scenario and up to 2.5 m in the high-emission scenario.

Can the current flood defences cope?

The Sea Level Rise Knowledge Programme found in June 2026 that the current approach can technically handle up to 3 m, given space, money and people; about two-thirds of primary defences would need reinforcing again after 2050.

Is drought now a serious risk?

Yes: KNMI'23 projects more frequent drought in all four scenarios, and the country was in a national actual water shortage from 16 July to 3 September 2026.

Is adaptation fully funded?

No: EUR 34–42 billion is needed to 2050 for flood safety, freshwater and adaptation, against about EUR 29 billion assumed in the Delta Fund.

Inside the report

Inside the complete report

Executive Snapshot

1. Why This Matters Now in Netherlands

2. Current Position

3. Key Programmes, Projects and Investment

4. Policy, Regulation and Institutions

5. Risks and Constraints

6. Strategic Implications

7. What to Watch

Source Register

Public preview

What to watch next

1. Why This Matters Now in Netherlands

Final adoption of NAS'26, planned for late 2026.

3. Key Programmes, Projects and Investment

The content and budget of Deltaplan Zoetwater phase 3, and an investment decision on IJmuiden.

5. Risks and Constraints

The outcome of the long-term financing study and any new Delta Fund resources in the 2028 budget.

6. Strategic Implications

How the National Water Programme 2028–2033 divides adaptation responsibilities between national and regional bodies.

Report page with a table of Dutch climate hazards from the KNMI'23 scenarios, flood exposure, primary defences to reinforce and salinisation thresholds at 0.5 m and 1 m of sea-level rise. — Sample page · page 4 of 10
Climate hazards and exposure: sea level, heat, drought, flood exposure and salinisation thresholds.

Included

What you receive

The complete PDF report: 10 pages, 9 sections, 7 tables and a register of 22 sources.

This edition

November 2026, First edition.

Evidence & method

Evidence and method

Official KNMI'23 climate scenarios, Rijkswaterstaat and government statements on the 2026 drought, Delta Programme and Delta Fund budget documents, parliamentary progress reports on the flood programmes, and the 2026 sea-level and adaptation strategy publications.

Sources

22 sources, listed in the report's source register. Evidence current to 1 November 2026. Principal data periods: KNMI'23 climate scenarios (projections to 2100); the 2026 drought season; Delta Fund 2026 budget and 2027 draft budget; Delta Programme 2027 (September 2026); flood programme progress to 31 December 2025. Status checks as of 1 November 2026. All currency is euros (EUR) unless stated..

Evidence boundaries

This report uses authoritative source material available at the stated research cutoff. It distinguishes published facts, calculated values and analytical interpretation. No independent modelling is performed. Forward-looking analysis reflects published plans, documented trends and stated uncertainties. It does not constitute legal, financial, investment or engineering advice.

Lead analyst

Robert C. Brears

Founder, Our Future Water Intelligence

Robert C. Brears is a water-security specialist and author whose work examines utility governance, infrastructure investment, climate resilience and long-term water-system change for executive and policy audiences.

Decision-focused utility intelligence
Published water-policy author
Evidence-grounded system analysis

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