1001 Smart Cities
🇪🇬 Alexandria

Alexandria's Sea-Level Gauges and the Tsunami-Ready Chain

🤖 AI-generated summary · ◆ 9 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.

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

How this atlas is made · What “last verified” means · What “source-checked” means · The full record behind this page

✎ Corrected 27 Aug 2026 Record revised. · 2 revisions in all What changed →

Every Egyptian station in the world sea-level network is in Alexandria, and two of the four have stopped reporting. The city is Africa's first Tsunami Ready community — a chain that still ends in someone deciding.

Outcome🔄 Ongoing
Evidence🔬 Peer-reviewed
what does this mean?The strongest source behind this entry is an independent peer-reviewed or academic study. It grades who did the looking — not how well the project went. All four grades →
Run byNational Institute of Oceanography and Fisheries (NIOF), with the EC Joint Research Centre; Alexandria Governorate for the preparedness chain
Scale🏙️ City-wide
FundingEC Joint Research Centre for the sea-level device; CoastWAVE project funded by the EU's DG ECHO for the Tsunami Ready work

Part of 1001 Smart Cities — 1,167 documented projects · 🏙️ 3 more in Alexandria · 📡 Sensors & IoT guide · 🌱 Environment projects

Four Egyptian stations appear in UNESCO-IOC's global sea-level monitoring facility and all four are in Alexandria, contributed by the National Institute of Oceanography and Fisheries with the European Commission's Joint Research Centre. Two are radar gauges sampling every ten seconds and were still transmitting on 6 August 2026; the other two last sent data in November 2023 and March 2025. The first of them was a low-cost JRC device installed in the port in June 2018. On 25 May 2024 the governorate, NIOF and the Beach Protection Authority met the twelve Tsunami Ready indicators — evacuation maps, a response plan, exercises — the first such recognition in Egypt and in Africa.

Live 📅 since 2018

📊 Impact

All four Egyptian stations in the global sea-level monitoring facility are in Alexandria, and half of them have stopped: two radar gauges sampling every ten seconds were still transmitting on 6 August 2026, while the other two last sent data in November 2023 and March 2025. On 25 May 2024 the governorate, the National Institute of Oceanography and Fisheries and the Beach Protection Authority met the twelve Tsunami Ready indicators — evacuation maps, a response plan, exercises — the first such recognition in Egypt and in Africa.

🎓 Lesson

A warning chain can be certified without a single automatic actuator, and Alexandria's is. The gauges feed a Mediterranean warning system and a governorate operations room; what happens next is a human decision. The breakwaters going up along the Corniche and around the Qaitbay citadel carry no instruments at all, and no Egyptian body publishes an Alexandria subsidence series — the millimetres-per-year figures in circulation come from academic satellite studies, not from anything the city operates.

🌱 EnvironmentSensors & IoTFlood resilienceWaterSafety & security

Sources

↗ UNESCO-IOC Sea Level Station Monitoring Facility — station alex2 (operator metadata)Live operator metadata for the station, read 2026-08-27. A continuously updating page with no publication date, hence date: null.
↗ UNESCO-IOC Sea Level Station Monitoring Facility — Egypt station listLive operator station list, read 2026-08-27. A continuously updating query result with no publication date, hence date: null.
↗ Pérez Gómez et al., Ocean Science 18, 997–1053 (peer-reviewed)Published 15 July 2022Peer-reviewed, read 2026-08-27. The article page gives 'Received: 20 Dec 2021 – Discussion started: 20 Jan 2022 – Revised: 25 Apr 2022 – Accepted: 10 May 2022 – Published: 15 Jul 2022'; the earliest full publication is taken.
↗ UNESCO-IOC Tsunami Programme — Tsunami Ready community page, AlexandriaOperator programme page, read 2026-08-27. Its only machine-readable date is a JSON-LD datePublished of 2025-04-01, which falls on the first of a month and post-dates the 2024 recognition it describes — a CMS stamp rather than a publication date, so date: null.
↗ IOC-UNESCO — Alexandria achieves recognition as Egypt and Africa's first Tsunami Ready communityIOC-UNESCO's own account of the recognition, dated 12 June 2024: the award ceremony of 25 May 2024 at the governor's office, the partners involved (the governorate, the National Institute of Oceanography and Fisheries and the Beach Protection Authority) and the 12 Key Indicators of the Tsunami Ready Recognition Programme they had to meet.
Show 1 more sourcesShow fewer
↗ Devdiscourse (syndication of the IOC announcement)Published 13 June 2024Syndication of the IOC announcement, read 2026-08-27; JSON-LD and itemprop both give 13 June 2024. It dates the award ceremony to 25 May 2024 at the Office of the Governor of Alexandria. Listed because the IOC original cannot be opened by an automated client.
Show your work What this page rests on and what it can’t tell you · all 9 claims with their sources · the forensic record

Evidence Passport · public beta 9 addressable claims, 6 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 9

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-2da016739a3a7d79 descriptive
Four Egyptian stations appear in UNESCO-IOC's global sea-level monitoring facility and all four are in Alexandria, contributed by the National Institute of Oceanography and Fisheries with the European Commission's Joint Research Centre
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The facility's Egypt station list returns four stations, all at Alexandria; the station record names the National Institute of Oceanography and Fisheries as operator alongside the Joint Research Centre.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. UNESCO-IOC Sea Level Station Monitoring Facility — Egypt station list
  2. UNESCO-IOC Sea Level Station Monitoring Facility — station alex2 (operator metadata)
Claim 2 clm-a5ebb2035a03871f quantitative
Two are radar gauges sampling every ten seconds and were still transmitting on 6 August 2026; the other two last sent data in November 2023 and March 2025
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The station list shows the last transmission for each Egyptian station, and the station record gives the radar instrument and its ten-second sampling.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. UNESCO-IOC Sea Level Station Monitoring Facility — Egypt station list
  2. UNESCO-IOC Sea Level Station Monitoring Facility — station alex2 (operator metadata)
Claim 3 clm-6bdac9f07cc5e3e1 quantitative
The first of them was a low-cost JRC device installed in the port in June 2018
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The peer-reviewed account covers the low-cost gauges deployed with the Joint Research Centre in the Mediterranean network, and the station record dates the Alexandria installation to June 2018.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Pérez Gómez et al., Ocean Science 18, 997–1053 (peer-reviewed)
  2. UNESCO-IOC Sea Level Station Monitoring Facility — station alex2 (operator metadata)
Claim 4 clm-28ea4aa60a7ee266 quantitative
On 25 May 2024 the governorate, NIOF and the Beach Protection Authority met the twelve Tsunami Ready indicators — evacuation maps, a response plan, exercises — the first such recognition in Egypt and in Africa
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The Tsunami Ready programme page records Alexandria's recognition and the twelve indicators; the IOC announcement and its syndicated copy give the date and describe it as the first such recognition in Egypt and in Africa. Verbatim: 'At the award ceremony, held on 25 May 2024 at the Office of the Governor of Alexandria' and 'Together, they have worked to meet the 12 Key Indicators of TRRP identified by UNESCO-IOC'.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. UNESCO-IOC Tsunami Programme — Tsunami Ready community page, Alexandria
  2. IOC-UNESCO — Alexandria achieves recognition as Egypt and Africa's first Tsunami Ready community
  3. Devdiscourse (syndication of the IOC announcement)
Claim 5 clm-ea701fb45f4cc1f9 descriptive
All four Egyptian stations in the global sea-level monitoring facility are in Alexandria, and half of them have stopped
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The Egypt station list returns four stations, all at Alexandria, two of which show a last transmission in the past.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. UNESCO-IOC Sea Level Station Monitoring Facility — Egypt station list
Claim 6 clm-99672a8ed9d1e068 quantitative
two radar gauges sampling every ten seconds were still transmitting on 6 August 2026, while the other two last sent data in November 2023 and March 2025
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
Read directly from the station list's last-transmission column and the station record's instrument description.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. UNESCO-IOC Sea Level Station Monitoring Facility — Egypt station list
  2. UNESCO-IOC Sea Level Station Monitoring Facility — station alex2 (operator metadata)
Claim 7 clm-0db117369bcf1b20 quantitative
On 25 May 2024 the governorate, the National Institute of Oceanography and Fisheries and the Beach Protection Authority met the twelve Tsunami Ready indicators
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The programme page and the IOC announcement record the three bodies and the twelve indicators. Verbatim: 'At the award ceremony, held on 25 May 2024 at the Office of the Governor of Alexandria' and 'Together, they have worked to meet the 12 Key Indicators of TRRP identified by UNESCO-IOC'.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. UNESCO-IOC Tsunami Programme — Tsunami Ready community page, Alexandria
  2. IOC-UNESCO — Alexandria achieves recognition as Egypt and Africa's first Tsunami Ready community
Claim 8 clm-d69f399be66f91a5 descriptive
A warning chain can be certified without a single automatic actuator, and Alexandria's is
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The twelve indicators cover mapping, planning, awareness and exercises; none of them requires an automatic actuation of any kind.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. UNESCO-IOC Tsunami Programme — Tsunami Ready community page, Alexandria
Claim 9 clm-f8b2025e2ef067c5 descriptive
no Egyptian body publishes an Alexandria subsidence series — the millimetres-per-year figures in circulation come from academic satellite studies, not from anything the city operates
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The only Egyptian instruments in the facility are the four Alexandria tide gauges; no subsidence series is published by an Egyptian body among these sources.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. UNESCO-IOC Sea Level Station Monitoring Facility — Egypt station list
  2. Pérez Gómez et al., Ocean Science 18, 997–1053 (peer-reviewed)
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 2026-08-27-correction-run-2 effective 2026-08-06 · created 2026-08-27

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

sha256:8b9377afbb3b6ca717fde9bc7039b451b62ce149905c66c9011f0959536e00ff
Revision history → Permanent version link → Machine-readable record → Evidence Constitution →
9
of 9 claims mapped
6
source dossiers
2
publication dates recorded
0
archives linked
0
exact locators
0
content captures hashed

Governance facts carried by the record

Operator
National Institute of Oceanography and Fisheries (NIOF), with the EC Joint Research Centre; Alexandria Governorate for the preparedness chain
Actor types
research, city-government, national-government
Funding model
grant
Funding description
EC Joint Research Centre for the sea-level device; CoastWAVE project funded by the EU's DG ECHO for the Tsunami Ready work
Cost
Not recorded
Ownership
Not recorded
Decision rights
Not recorded
Exit conditions
Not recorded

6 source dossiers

UNESCO-IOC Sea Level Station Monitoring Facility — station alex2 (operator metadata) ioc-sealevelmonitoring.org · 4 linked claims

Open original source ↗

Stable source ID
src-33a25bea328f6177
Publisher
Name not classified · ioc-sealevelmonitoring.org
Type / language
web-page · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-08-06
Dossier created
2026-08-27
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Live operator metadata for the station, read 2026-08-27. A continuously updating page with no publication date, hence date: null.

Descriptive only — not page/paragraph exact
Claims linked
UNESCO-IOC Sea Level Station Monitoring Facility — Egypt station list ioc-sealevelmonitoring.org · 5 linked claims

Open original source ↗

Stable source ID
src-195531b6a704e15f
Publisher
Name not classified · ioc-sealevelmonitoring.org
Type / language
web-page · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-08-06
Dossier created
2026-08-27
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Live operator station list, read 2026-08-27. A continuously updating query result with no publication date, hence date: null.

Descriptive only — not page/paragraph exact
Claims linked
Pérez Gómez et al., Ocean Science 18, 997–1053 (peer-reviewed) os.copernicus.org · 2 linked claims

Open original source ↗

Stable source ID
src-2cbfa001c413ab35
Publisher
Name not classified · os.copernicus.org
Type / language
web-page · language not classified
Published
2022-07-15
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-08-06
Dossier created
2026-08-27
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Peer-reviewed, read 2026-08-27. The article page gives 'Received: 20 Dec 2021 – Discussion started: 20 Jan 2022 – Revised: 25 Apr 2022 – Accepted: 10 May 2022 – Published: 15 Jul 2022'; the earliest full publication is taken.

Descriptive only — not page/paragraph exact
Claims linked
UNESCO-IOC Tsunami Programme — Tsunami Ready community page, Alexandria tsunami.ioc.unesco.org · 3 linked claims

Open original source ↗

Stable source ID
src-dee965186fd16b7e
Publisher
Name not classified · tsunami.ioc.unesco.org
Type / language
web-page · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-08-06
Dossier created
2026-08-27
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Operator programme page, read 2026-08-27. Its only machine-readable date is a JSON-LD datePublished of 2025-04-01, which falls on the first of a month and post-dates the 2024 recognition it describes — a CMS stamp rather than a publication date, so date: null.

Descriptive only — not page/paragraph exact
Claims linked
IOC-UNESCO — Alexandria achieves recognition as Egypt and Africa's first Tsunami Ready community ioc.unesco.org · 2 linked claims

Open original source ↗

Stable source ID
src-45f88235cf24197b
Publisher
Name not classified · ioc.unesco.org
Type / language
web-page · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-08-06
Dossier created
2026-08-27
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

IOC-UNESCO's own account of the recognition, dated 12 June 2024: the award ceremony of 25 May 2024 at the governor's office, the partners involved (the governorate, the National Institute of Oceanography and Fisheries and the Beach Protection Authority) and the 12 Key Indicators of the Tsunami Ready Recognition Programme they had to meet.

Descriptive only — not page/paragraph exact
Claims linked
Devdiscourse (syndication of the IOC announcement) devdiscourse.com · 1 linked claim

Open original source ↗

Stable source ID
src-5f126012615ef9f0
Publisher
Name not classified · devdiscourse.com
Type / language
web-page · language not classified
Published
2024-06-13
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-08-06
Dossier created
2026-08-27
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Syndication of the IOC announcement, read 2026-08-27; JSON-LD and itemprop both give 13 June 2024. It dates the award ceremony to 25 May 2024 at the Office of the Governor of Alexandria. Listed because the IOC original cannot be opened by an automated client.

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

🇯🇵 Tsunami-Alert Automatic Tide Gate Closure · Osaka The two ends of coastal instrumentation: Osaka's gates close themselves on a warning, Alexandria's gauges report to people who then decide. 🇩🇰 Copenhagen Bathing Water Forecast & Overflow Warning System · Copenhagen Both turn coastal measurement into a public warning and stop there — the reading informs, it does not actuate. 🇵🇭 EFCOS: Metro Manila's Flood Telemetry and Floodway Gates · Manila Working gauges in cities where the defences around them are the contested part, not the instruments.

Explore the wider context

📟 A Reading Is Not a Decision📖 Flood early-warning system📖 Automated speed enforcement (speed cameras)📖 District metering area (DMA)
📎 Cite this project

1001 Smart Cities (2026). “Alexandria's Sea-Level Gauges and the Tsunami-Ready Chain” — Alexandria, Egypt. The Smart City Atlas. https://1001smartcities.org/projects/alexandria-sea-level-stations/ (last verified 2026-08-06). Data: CC BY 4.0.

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

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