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🇮🇪 Dublin

Dublin Tidal Flood Forecasting: A Forecast That Tells the Council When to Shut the Gates

🤖 AI-generated summary · ◆ 13 sourced claims · 🔎 Last verified

This overview was generated with AI from the public sources listed below and checked against them before publication. It has not had a complete human fact-check — treat it as a starting point and follow the sources.

13 sourced claims on this page, none individually verified yet — turn on “Sources in the text” to see each one.

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Dublin's Dodder gates and quay barriers give their 1-in-200-year protection only once someone shuts them. A tide forecast built after 2002 says when; no study says how well.

Outcome🔄 Ongoing
Evidence🏛️ Official
what does this mean?The strongest source is the operator's or the city's own reporting — an official report, dataset or press release. It grades who did the looking — not how well the project went. All four grades →
Run byDublin City Council, Environment and Transportation Department; Triton forecast system built by Royal Haskoning (2005)
Scale🏙️ City-wide
FundingDublin Coastal Flooding Protection Project, sponsored by Dublin City Council with Fingal County Council, the Department of Communications, Marine and Natural Resources and the OPW, within the EU Interreg IIIB SAFER project

Part of 1001 Smart Cities — 1,176 documented projects · 🏙️ 10 more in Dublin · 🌊 Flood resilience guide · 🌱 Environment projects

After the tidal flood of 1 February 2002, Dublin City Council commissioned a coastal flood forecasting system, Triton, from the consultants Royal Haskoning, whose final report is dated 29 April 2005. It takes surge, wave and wind forecasts from the UK Met Office, received twice daily, and converts them through pre-computed transfer functions into a 36-hour forecast of water levels and wave overtopping along the coast, compared against trigger levels for tiered flood warnings. A second tidal system, Tidewatch, was also developed after 2002; the council says Tidewatch forecasts up to five days ahead and Triton two. Alongside, the council monitors river, rainfall, tidal and waste water levels through a network of level gauges, rain gauges, cameras and weather stations. The forecasts close nothing themselves: flood gates and demountable defences along Spencer Dock, the South Campshires and the River Dodder have to be closed during an extreme event.

Live 📅 since 2005

📊 Impact

No published evaluation of either system's forecast accuracy, or of flooding it helped avoid, was found. What the record shows is use: in February 2026, tidal warnings led the council to keep coastal car parks at Sandymount and Clontarf closed against wave overtopping, to keep the flood gates along the River Dodder closed until further notice, and to put up flood barriers at the Eden Quay boardwalk. The council's climate action plan lists monitoring of the flood forecasting and warning system as an ongoing action whose indicator is simply that the system is maintained.

🎓 Lesson

A forecast buys time; the protection comes from people using it. The council calls the tide forecasts an integral element of its defences because the gates and demountable barriers on the Dodder and the quays provide their 1-in-200-year standard of protection only once they are closed — and the 2005 design told the council to set its warning triggers partly by the time needed to put demountable and temporary defences in place.

🌱 EnvironmentFlood resilienceSensors & IoT

Sources

↗ Dublin City Council Climate Change Action Plan 2019–2024, flood resilience chapter (operator)Published 2019Flood-resilience chapter of the council's Climate Change Action Plan 2019–2024. A case study says Triton and Tidewatch are two tidal flood forecasting and warning systems developed following the coastal flood of February 2002, using weather and/or surge forecasts in the Irish Sea to predict tide levels, Tidewatch up to five days ahead and Triton two. The forecasts are used to implement emergency responses such as closing flood gates: the defences along Spencer Dock, the South Campshires and the River Dodder contain flood gates and demountable defences that must be closed in an extreme event to give a 1-in-200-year standard of protection. The action table lists 'Monitoring of flood forecasting and warning system' as ongoing, indicator 'System maintained'. It also notes the SAFER project (2002–2008) that produced a tidal flood forecasting and warning system.
↗ Dublin Coastal Flooding Protection Project, final report by Royal Haskoning, 29 April 2005 (consultant)Final report of the Dublin Coastal Flooding Protection Project for Dublin City Council and Fingal County Council, primary sponsor Dublin City Council with Fingal, the Department of Communications, Marine and Natural Resources and the OPW as co-sponsors, within the Interreg IIIB SAFER initiative. Chapter 14 describes the Triton forecast system: UK Met Office surge predictions received twice daily, transfer functions that convert offshore to nearshore conditions without running models in real time, a 36-hour forecast of twelve three-hourly predictions, default trigger levels for four warning tiers, and trigger levels to be set partly by the time needed to put demountable and temporary defences in place. It states the system needs formal trial testing before going live.
↗ Dublin City Council, Flood Forecast and Warning page (operator)For flood forecasting and warning the council monitors river, rainfall, tidal and waste water levels with a network of level gauges, rain gauges, cameras and weather stations, mostly in the city, with some instruments in Counties Wicklow, Meath and Kildare.
↗ The Irish Times, Dublin flood live coverage, 3 February 2026 (media)Live coverage of the February 2026 floods, relaying Dublin City Council statements: tidal warnings prompted the council to close car parks along the coast at Sandymount and Clontarf against possible wave overtopping; the Eden Quay boardwalk floodgates were closed as a precaution and flood barriers put up; the flood gates along the River Dodder would remain closed until further notice; crews remained active across the city.

📅 How old is the evidence?

Two clocks, kept apart: when this entry’s sources were published, and what has happened to its record in the atlas. Documented span: since 2005. 3 of 4 sources carry a publication date, from 29 April 2005 to 3 February 2026.

When the sources were published

  1. Dublin Coastal Flooding Protection Project, final report by Royal Haskoning, 29 April 2005 (consultant)
  2. Dublin City Council · city governmentDublin City Council Climate Change Action Plan 2019–2024, flood resilience chapter (operator)
  3. The Irish Times · pressThe Irish Times, Dublin flood live coverage, 3 February 2026 (media)

Every source, with links ↑

What happened to this record

  1. Entered the record
  2. Sources last read

Every revision, permanent →

Show your work What this page rests on and what it can’t tell you · all 13 claims with their sources · the forensic record

Evidence Passport · public beta 13 addressable claims, 4 source dossiers, one permanent baseline. The passport is unreviewed — an AI-assisted structural migration, not a human or expert endorsement. Every revision keeps a permanent copy under revision history.

Inspect the claims, one by one — verbatim text, sources and caveats for all 13

The text below is copied verbatim from the published record. Each claim names the source dossiers that carry it; caveats stay attached to the claim they qualify.

Claim 1 clm-e28fc037c04efff5 quantitative
After the tidal flood of 1 February 2002, Dublin City Council commissioned a coastal flood forecasting system, Triton, from the consultants Royal Haskoning
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The consultant's final report names Dublin City Council as primary sponsor, calibrates its models against the 1 February 2002 event and delivers the forecast system through the TRITON user interface.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Dublin Coastal Flooding Protection Project, final report by Royal Haskoning, 29 April 2005 (consultant)
Claim 2 clm-9b2f6c7657a81299 quantitative
whose final report is dated 29 April 2005
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
Every page of the report carries 'Final Report 29 April 2005'.
Caveat
The report describes the system as delivered to the council but still needing a trial period before going live; the date it first issued live warnings was not found.

Sources carrying this claim

  1. Dublin Coastal Flooding Protection Project, final report by Royal Haskoning, 29 April 2005 (consultant)
Claim 3 clm-0c7108991d22de54 quantitative
takes surge, wave and wind forecasts from the UK Met Office, received twice daily, and converts them through pre-computed transfer functions into a 36-hour forecast of water levels and wave overtopping along the coast
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
Chapter 10 states surge predictions are received twice daily from the UK Met Office; chapter 14 describes pre-developed transfer functions converting offshore to nearshore conditions and overtopping, and 'a 36 hour forecast is given with twelve three-hourly predictions'.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Dublin Coastal Flooding Protection Project, final report by Royal Haskoning, 29 April 2005 (consultant)
Claim 4 clm-b17165f17d0bde8f descriptive
compared against trigger levels for tiered flood warnings
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
Section 14.1.3 bases the Triton warning trigger values on a four-tier system, with default trigger levels for water level and overtopping in Table 14.2.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Dublin Coastal Flooding Protection Project, final report by Royal Haskoning, 29 April 2005 (consultant)
Claim 5 clm-5c0f689ac90bc85a quantitative
A second tidal system, Tidewatch, was also developed after 2002; the council says Tidewatch forecasts up to five days ahead and Triton two.
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The council's case study: Triton and Tidewatch are two tidal flood forecasting and warning systems developed following the February 2002 flood, 'with Tidewatch providing forecasts up to five days in advance and Triton two days in advance'.
Caveat
The 2005 design report describes Triton's forecast as 36 hours; the council's plan rounds it to two days. Neither source names who built Tidewatch.

Sources carrying this claim

  1. Dublin City Council Climate Change Action Plan 2019–2024, flood resilience chapter (operator)
Claim 6 clm-acc5a730e4da9e00 descriptive
the council monitors river, rainfall, tidal and waste water levels through a network of level gauges, rain gauges, cameras and weather stations
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The council page states it monitors river, rainfall, tidal and waste water levels with level gauges, rain gauges, cameras and weather stations, mostly in the city and some in Wicklow, Meath and Kildare.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Dublin City Council, Flood Forecast and Warning page (operator)
Claim 7 clm-fd29e9b9e3a0b120 descriptive
flood gates and demountable defences along Spencer Dock, the South Campshires and the River Dodder have to be closed during an extreme event
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The plan: the defences along Spencer Dock, the South Campshires and the River Dodder contain flood gates and demountable defences 'which require closing during an extreme event'; the forecasts are used to implement emergency response procedures such as closing flood gates.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Dublin City Council Climate Change Action Plan 2019–2024, flood resilience chapter (operator)
Claim 8 clm-8876df8d350ae642 descriptive
No published evaluation of either system's forecast accuracy, or of flooding it helped avoid, was found.
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
Neither the council's plan nor the design report gives a measured accuracy or avoided-damage figure; the report itself calls for trial testing and later fine-tuning of trigger levels. No independent assessment turned up in our search.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Dublin City Council Climate Change Action Plan 2019–2024, flood resilience chapter (operator)
  2. Dublin Coastal Flooding Protection Project, final report by Royal Haskoning, 29 April 2005 (consultant)
Claim 9 clm-fbcf381c3a95f63d quantitative
in February 2026, tidal warnings led the council to keep coastal car parks at Sandymount and Clontarf closed against wave overtopping, to keep the flood gates along the River Dodder closed until further notice, and to put up flood barriers at the Eden Quay boardwalk
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The live coverage relays council statements: 'Due to tidal warnings, carparks along coasts at Sandymount and Clontarf will be kept closed to protect against possible wave overtopping', the Dodder flood gates 'will remain closed until further notice', and flood barriers were put up at the Eden Quay boardwalk.
Caveat
The coverage says 'tidal warnings' without naming which forecast system issued them.

Sources carrying this claim

  1. The Irish Times, Dublin flood live coverage, 3 February 2026 (media)
Claim 10 clm-21e203e3057102ac descriptive
lists monitoring of the flood forecasting and warning system as an ongoing action whose indicator is simply that the system is maintained
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The plan's action table: 'Monitoring of flood forecasting and warning system — Ongoing — Environment and Transportation — System maintained'.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Dublin City Council Climate Change Action Plan 2019–2024, flood resilience chapter (operator)
Claim 11 clm-a6dbd93bdca7614b descriptive
The council calls the tide forecasts an integral element of its defences
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The plan: 'Thus, the tide forecasts form an important and integral element of the flood defences in these areas.'
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Dublin City Council Climate Change Action Plan 2019–2024, flood resilience chapter (operator)
Claim 12 clm-b219c8cdcd92ab28 quantitative
the gates and demountable barriers on the Dodder and the quays provide their 1-in-200-year standard of protection only once they are closed
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The plan: the gates and demountable defences 'when closed, ensure that a 1-in-200-year standard of protection is provided by these defences'.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Dublin City Council Climate Change Action Plan 2019–2024, flood resilience chapter (operator)
Claim 13 clm-46d300d67329f7a5 quantitative
the 2005 design told the council to set its warning triggers partly by the time needed to put demountable and temporary defences in place
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
Section 14.1.4 lists, among the operations-related aspects on which each trigger level depends, 'The time needed to put demountable and temporary defences in place'.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Dublin Coastal Flooding Protection Project, final report by Royal Haskoning, 29 April 2005 (consultant)
Forensic record — source dossiers, gaps, hashes and the exact revision this page renders

This layer records what is known about each source, what is still missing, and the exact snapshot this page is rendering. A missing date, archive or hash stays visible as missing.

unreviewed Revision 2026-09-25-baseline effective 2026-09-25 · created 2026-09-25

Awaiting operator and domain-expert review; publication of this revision implies neither.

sha256:a27170f3b47e27d8d5b9b8aaa9a2715998fd942463aab591eb3352d2f77ef3e9
Revision history → Permanent version link → Machine-readable record → Evidence Constitution →
13
of 13 claims mapped
4
source dossiers
2
publication dates recorded
0
archives linked
0
exact locators
0
content captures hashed

Governance facts carried by the record

Operator
Dublin City Council, Environment and Transportation Department; Triton forecast system built by Royal Haskoning (2005)
Actor types
city-government
Funding model
public
Funding description
Dublin Coastal Flooding Protection Project, sponsored by Dublin City Council with Fingal County Council, the Department of Communications, Marine and Natural Resources and the OPW, within the EU Interreg IIIB SAFER project
Cost
Not recorded
Ownership
Not recorded
Decision rights
Not recorded
Exit conditions
Not recorded

4 source dossiers

Dublin City Council Climate Change Action Plan 2019–2024, flood resilience chapter (operator) dublinclimatechange.codema.ie · 6 linked claims

Open original source ↗

Stable source ID
src-b470cf7f0889d598
Publisher
Name not classified · dublinclimatechange.codema.ie
Type / language
pdf · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-09-25
Dossier created
2026-09-25
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Flood-resilience chapter of the council's Climate Change Action Plan 2019–2024. A case study says Triton and Tidewatch are two tidal flood forecasting and warning systems developed following the coastal flood of February 2002, using weather and/or surge forecasts in the Irish Sea to predict tide levels, Tidewatch up to five days ahead and Triton two. The forecasts are used to implement emergency responses such as closing flood gates: the defences along Spencer Dock, the South Campshires and the River Dodder contain flood gates and demountable defences that must be closed in an extreme event to give a 1-in-200-year standard of protection. The action table lists 'Monitoring of flood forecasting and warning system' as ongoing, indicator 'System maintained'. It also notes the SAFER project (2002–2008) that produced a tidal flood forecasting and warning system.

Descriptive only — not page/paragraph exact
Claims linked
Dublin Coastal Flooding Protection Project, final report by Royal Haskoning, 29 April 2005 (consultant) fingal.ie · 6 linked claims

Open original source ↗

Stable source ID
src-70e2bbfe61db4931
Publisher
Name not classified · fingal.ie
Type / language
pdf · language not classified
Published
2005-04-29
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-09-25
Dossier created
2026-09-25
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Final report of the Dublin Coastal Flooding Protection Project for Dublin City Council and Fingal County Council, primary sponsor Dublin City Council with Fingal, the Department of Communications, Marine and Natural Resources and the OPW as co-sponsors, within the Interreg IIIB SAFER initiative. Chapter 14 describes the Triton forecast system: UK Met Office surge predictions received twice daily, transfer functions that convert offshore to nearshore conditions without running models in real time, a 36-hour forecast of twelve three-hourly predictions, default trigger levels for four warning tiers, and trigger levels to be set partly by the time needed to put demountable and temporary defences in place. It states the system needs formal trial testing before going live.

Descriptive only — not page/paragraph exact
Claims linked
Dublin City Council, Flood Forecast and Warning page (operator) dublincity.ie · 1 linked claim

Open original source ↗

Stable source ID
src-63b6137bb61c4732
Publisher
Name not classified · dublincity.ie
Type / language
web-page · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-09-25
Dossier created
2026-09-25
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

For flood forecasting and warning the council monitors river, rainfall, tidal and waste water levels with a network of level gauges, rain gauges, cameras and weather stations, mostly in the city, with some instruments in Counties Wicklow, Meath and Kildare.

Descriptive only — not page/paragraph exact
Claims linked
The Irish Times, Dublin flood live coverage, 3 February 2026 (media) irishtimes.com · 1 linked claim

Open original source ↗

Stable source ID
src-f78bc406833a665b
Publisher
Name not classified · irishtimes.com
Type / language
web-page · language not classified
Published
2026-02-03
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-09-25
Dossier created
2026-09-25
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Live coverage of the February 2026 floods, relaying Dublin City Council statements: tidal warnings prompted the council to close car parks along the coast at Sandymount and Clontarf against possible wave overtopping; the Eden Quay boardwalk floodgates were closed as a precaution and flood barriers put up; the flood gates along the River Dodder would remain closed until further notice; crews remained active across the city.

Descriptive only — not page/paragraph exact
Claims linked
Known limits of this passport
  • Publisher names and source languages have not yet been classified; domains are recorded without guessing.
  • Existing source notes are descriptive locators, not page- or paragraph-exact citations.
  • A missing archive, publication date or content hash is shown as null rather than inferred.
  • The project-level evidence grade ranks the strongest source in the entry; it is not a truth score for every claim.

Continue exploring

Compare this project

🇳🇱 Maeslant Barrier: the Closure Decision Is Not a Person's · Rotterdam Rotterdam's barrier closes on a computer's decision; Dublin's forecast only warns, and council crews shut the gates. 🇹🇼 Taipei's Automated Stormwater Pumping Station Network · Taipei Taipei automates the pumps; Dublin automates only the forecast and leaves gate closure to council crews. 🇲🇬 APIPA Flood Alert System for the Antananarivo Plain · Antananarivo Two warning systems whose value depends on who acts on the alert, not on the gauges that feed it.

Explore the wider context

📟 A Reading Is Not a Decision📖 Flood early-warning system📖 Adaptive traffic signals📖 Air quality index (AQI)
📎 Cite this project

1001 Smart Cities (2026). “Dublin Tidal Flood Forecasting: A Forecast That Tells the Council When to Shut the Gates” — Dublin, Ireland. The Smart City Atlas. https://1001smartcities.org/projects/dublin-flood-forecasting/ (last verified 2026-09-25). Data: CC BY 4.0.

The underlying data is free to reuse with attribution — see the open data page.

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