Permanent project revision

Arroyo Maldonado relief tunnels & Buenos Aires's storm alert network

Revision 2026-08-20-source-dates · effective 2026-07-26

Current revision. This is the snapshot used by the live entity page.

unreviewed

Created the first structured Evidence Passport with 1 claim and 10 source dossiers.

sha256:5730834229c4001dbfa806675e9f5a73399f7ed35f01979a4bb6fd20212c765b

All revisions → Current entity page →

Change set

add /evidencePassport — Added claim-level evidence mapping and source dossiers.
add /revisionHistory — Established a permanent, hash-addressed baseline revision.

1: of 1 claims mapped
10: source dossiers
8: publication dates recorded
0: archives linked
0: exact locators
0: content captures hashed

Claims, one by one

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-7db4e414c477082a quantitative

the works were designed to prevent flooding in the city's Maldonado basin in a 10-year storm, with about 342,968 direct beneficiaries in the basin's critical zone

Published field: impact · verbatim
Mapping: mapped · no interpretation or interpolation added by this passport
What the mapping says: The impact attributes the design standard and beneficiary count to the World Bank ICR.
Caveat: The Bank's Independent Evaluation Group rated the project's outcome Moderately Unsatisfactory, with the secondary drainage network under way in only 2 of 6 planned areas at closing.

Sources carrying this claim

World Bank — Implementation Completion and Results Report, ICR2686

Source dossiers and revision state

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 2026-08-20-source-dates effective 2026-07-26 · created 2026-08-20

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

sha256:5730834229c4001dbfa806675e9f5a73399f7ed35f01979a4bb6fd20212c765b

Revision history → Permanent version link → Machine-readable record → Evidence Constitution →

1: of 1 claims mapped
10: source dossiers
8: publication dates recorded
0: archives linked
0: exact locators
0: content captures hashed

Governance facts carried by the record

Operator: Gobierno de la Ciudad de Buenos Aires — Dirección General Sistema Pluvial (drainage, sensors, pumping stations); alert data converges at the Centro Único de Coordinación y Control under the Ministerio de Justicia y Seguridad
Actor types: city-government
Funding model: mixed
Funding description: World Bank IBRD loan of US$134.01M plus City of Buenos Aires counterpart funds
Cost: ≈US$193M actual (appraisal US$189M)
Ownership: Not recorded
Decision rights: Not recorded
Exit conditions: Not recorded

10 source dossiers

World Bank — IEG ICR Review, Urban Flood Prevention and Drainage (P088220) documents1.worldbank.org · background

Open original source ↗

Stable source ID: src-612738650401aac4
Publisher: Name not classified · documents1.worldbank.org
Type / language: web-page · language not classified
Published: 2015-04-13
Updated: Not recorded
Source last checked: No source-level check date
Record last verified: 2026-07-26
Dossier created: 2026-08-20
Retrieved copy: No local capture recorded
Archive: No archived copy linked
Content hash: No captured content hash
Locator: Open the recorded source note
Independent review. Gives the Moderately Unsatisfactory outcome rating, appraisal cost US$189M against actual US$193.01M, an IBRD loan of US$134.01M (originally EUR 98M), board approval 5 April 2005 and closing 31 August 2012 after extension from 31 December 2010; states the secondary drainage works were 'underway in 2 of the 6 proposed areas, with the remainder expected to be completed with City funds', and draws the lesson that combining structural and non-structural components in one project is challenging. The PDF at the same document ID returned unparseable binary to our fetcher; this identical .txt rendition was read instead.
Descriptive only — not page/paragraph exact
Claims linked: Background source; no baseline claim points here

World Bank — Implementation Completion and Results Report, ICR2686 documents1.worldbank.org · 1 linked claim

Open original source ↗

Stable source ID: src-3d60bcaca9a45cca
Publisher: Name not classified · documents1.worldbank.org
Type / language: web-page · language not classified
Published: 2012-11-28
Updated: Not recorded
Source last checked: No source-level check date
Record last verified: 2026-07-26
Dossier created: 2026-08-20
Retrieved copy: No local capture recorded
Archive: No archived copy linked
Content hash: No captured content hash
Locator: Open the recorded source note
Source for the tunnel dimensions (9.8 km and 4.6 km, 6 m inner diameter, both in operation from mid-2012), the design standard ('designed to avoid flooding in the area of the City within the Maldonado Basin during rain events of 10 year intervals'), the figure of roughly 342,968 direct beneficiaries, and the statement that 'shortage of funding meant that the Project could not achieve the development of a complete hydrological monitoring network for the City'. PDF unparseable; .txt rendition read.
Descriptive only — not page/paragraph exact
Claims linked: clm-7db4e414c477082a

Gobierno de la Ciudad de Buenos Aires — Sistema de Alerta de Tormentas buenosaires.gob.ar · background

Open original source ↗

Stable source ID: src-89defab6e6a67f4c
Publisher: Name not classified · buenosaires.gob.ar
Type / language: web-page · language not classified
Published: Not recorded
Updated: Not recorded
Source last checked: No source-level check date
Record last verified: 2026-07-26
Dossier created: 2026-08-20
Retrieved copy: No local capture recorded
Archive: No archived copy linked
Content hash: No captured content hash
Locator: Open the recorded source note
Operator page. Dates the system to October 2016, describes a network of 34 automatic meteorological stations 'of which 10 are already transmitting data', a dual-polarisation Doppler radar then still being installed at Merlo, and data converging at the Centro Único de Coordinación y Control, 'currently operated by the Ministry of Justice and Security'. The page reads as an undated snapshot close to launch — we did not find a current count of stations actually transmitting, so the entry claims none. Nothing on the page describes automatic actuation of pumps or gates.
Descriptive only — not page/paragraph exact
Claims linked: Background source; no baseline claim points here

Gobierno de la Ciudad de Buenos Aires — Red hidrométrica buenosaires.gob.ar · background

Open original source ↗

Stable source ID: src-63a6bc265f8902a2
Publisher: Name not classified · buenosaires.gob.ar
Type / language: web-page · language not classified
Published: Not recorded
Updated: Not recorded
Source last checked: No source-level check date
Record last verified: 2026-07-26
Dossier created: 2026-08-20
Retrieved copy: No local capture recorded
Archive: No archived copy linked
Content hash: No captured content hash
Locator: Open the recorded source note
Confirms the sensing layer: 'Los sensores monitorean en forma constante la lluvia, la temperatura, el viento, el caudal y el nivel del agua', feeding 'un tablero de control donde se visualizan en mapas y gráficos con la finalidad de detectar variaciones en los caudales y anticipar posibles inconvenientes'. No sensor count, no public data feed and no automatic response described — the basis for this entry's placement as warning-only.
Descriptive only — not page/paragraph exact
Claims linked: Background source; no baseline claim points here

Infobae — inside the Maldonado conduits, 2 July 2024 infobae.com · background

Open original source ↗

Stable source ID: src-f22896dd44b4e26a
Publisher: Name not classified · infobae.com
Type / language: web-page · language not classified
Published: 2024-07-02
Updated: Not recorded
Source last checked: No source-level check date
Record last verified: 2026-07-26
Dossier created: 2026-08-20
Retrieved copy: No local capture recorded
Archive: No archived copy linked
Content hash: No captured content hash
Locator: Open the recorded source note
Describes maintenance rather than control: constant inspection because 'en esos conductos pluviales una obstrucción puede generar un problema muy grande', robots in the smaller pipes, cleaning of some 900 km of conduits and 30,000 sumideros by Espacio Público e Higiene Urbana, and a 6 m conduit that routes inflow from the Province to the Riachuelo via the Cildañez. Also cites rainfall up about 11% over two decades. No sensor-driven control is mentioned anywhere in the piece.
Descriptive only — not page/paragraph exact
Claims linked: Background source; no baseline claim points here

La Nación — flooding in the city, 8 February 2024 lanacion.com.ar · background

Open original source ↗

Stable source ID: src-5b02ef8a3518cd64
Publisher: Name not classified · lanacion.com.ar
Type / language: web-page · language not classified
Published: 2024-02-08
Updated: 2024-02-09
Source last checked: No source-level check date
Record last verified: 2026-07-26
Dossier created: 2026-08-20
Retrieved copy: No local capture recorded
Archive: No archived copy linked
Content hash: No captured content hash
Locator: Open the recorded source note
Counterweight: flooded streets and businesses and three subway lines out of service, a decade after the tunnels opened. Surfaced via search with headline and date; the article page itself was not fetched.
Descriptive only — not page/paragraph exact
Claims linked: Background source; no baseline claim points here

Infobae — storm across the AMBA, 25 October 2025 infobae.com · background

Open original source ↗

Stable source ID: src-d12d2fd7ea930f0c
Publisher: Name not classified · infobae.com
Type / language: web-page · language not classified
Published: 2025-10-25
Updated: Not recorded
Source last checked: No source-level check date
Record last verified: 2026-07-26
Dossier created: 2026-08-20
Retrieved copy: No local capture recorded
Archive: No archived copy linked
Content hash: No captured content hash
Locator: Open the recorded source note
Second dated counterweight: close to 118 mm across the AMBA, with 155 mm in Villa Devoto and 114 mm in Villa Santa Rita, flooded neighbourhoods and cut streets. Surfaced via search; page not fetched.
Descriptive only — not page/paragraph exact
Claims linked: Background source; no baseline claim points here

World Bank — Flood Risk Management Support Project for the City of Buenos Aires, 22 June 2016 worldbank.org · background

Open original source ↗

Stable source ID: src-a492e52722648571
Publisher: Name not classified · worldbank.org
Type / language: web-page · language not classified
Published: 2016-06-22
Updated: Not recorded
Source last checked: No source-level check date
Record last verified: 2026-07-26
Dossier created: 2026-08-20
Retrieved copy: No local capture recorded
Archive: No archived copy linked
Content hash: No captured content hash
Locator: Open the recorded source note
The follow-on loan (P145686), which moved to the Vega basin — the basin where the city's 2013 deaths occurred and which the Maldonado tunnels do not serve. Cited only for the existence and date of the successor project, not for any Maldonado figure.
Descriptive only — not page/paragraph exact
Claims linked: Background source; no baseline claim points here

Infobae — eight dead in the city, 2 April 2013 infobae.com · background

Open original source ↗

Stable source ID: src-c774c32420f14191
Publisher: Name not classified · infobae.com
Type / language: web-page · language not classified
Published: 2013-04-02
Updated: Not recorded
Source last checked: No source-level check date
Record last verified: 2026-07-26
Dossier created: 2026-08-20
Retrieved copy: No local capture recorded
Archive: No archived copy linked
Content hash: No captured content hash
Locator: Open the recorded source note
Contemporaneous reporting put the toll inside the Autonomous City at six to eight, in Saavedra, Colegiales, Villa Luro, Villa Ortúzar and Villa Urquiza — neighbourhoods largely in the Vega basin, not the Maldonado. Surfaced via search; page not fetched, and the exact final city figure varies between outlets, so the entry gives no number.
Descriptive only — not page/paragraph exact
Claims linked: Background source; no baseline claim points here

La Nación — courts ratify 89 deaths in La Plata lanacion.com.ar · background

Open original source ↗

Stable source ID: src-701ecded1a2c21ff
Publisher: Name not classified · lanacion.com.ar
Type / language: web-page · language not classified
Published: 2014-07-04
Updated: 2022-02-15
Source last checked: No source-level check date
Record last verified: 2026-07-26
Dossier created: 2026-08-20
Retrieved copy: No local capture recorded
Archive: No archived copy linked
Content hash: No captured content hash
Locator: Open the recorded source note
Cited only to keep the tolls apart: the 89 judicially confirmed deaths of 2-3 April 2013 belong to La Plata, a different city roughly 60 km away, and are routinely merged with Buenos Aires figures in coverage. They are not attributed to this entry.
Descriptive only — not page/paragraph exact
Claims linked: Background source; no baseline claim points here

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.