# Valencia DANA flood management investigation

> Live situation record from CLSTR: https://clstr.news/situations/valencia-dana-flood-management-investigation
> Updated: 2026-09-09T04:01:01.000Z. Sources: 10. Developments: 3.

The judicial and parliamentary investigation into the management of the DANA flood emergency in Valencia has progressed toward new testimonies. Following the rejection of his legal attempt to dismiss his involvement, former President Carlos Mazón is scheduled to testify before the Spanish Congress's investigative commission on September 21.

Mazón will appear alongside Emilio Argüeso, the former regional emergency secretary, who missed a previous hearing in January due to medical leave. The commission, which holds a majority led by PSOE and Compromís-Sumar, aims to conclude its investigation by November, approaching the second anniversary of the disaster that resulted in 232 deaths.

As the commission moves forward, political pressure is mounting. Representatives from the Compromís party are urging the commission to summon Prime Minister Pedro Sánchez and his ministers to testify, arguing that central government involvement is essential to the investigation's integrity. This parliamentary scrutiny continues amid ongoing social unrest, including planned demonstrations such as the September 26 protest in Alicante under the slogan ‘Mazón a presó’ (Mazón to prison).

## Timeline

### 2026-09-09: Carlos Mazón to testify before DANA commission on September 21

Former Valencian President Carlos Mazón is scheduled to testify before the DANA investigation commission on September 21, as political groups also call for Prime Minister Pedro Sánchez to appear.

4 sources. https://clstr.news/cluster/carlos-mazn-to-testify-before-dana-commission-on-september-21

### 2026-09-07: Carlos Mazón faces new Congressional summons over DANA management

Former Valencian President Carlos Mazón faces a new summons before the Spanish Congress to testify on his management of the 2024 DANA floods, amid rising social protests in Alicante.

7 sources. https://clstr.news/cluster/carlos-mazns-legal-attempt-to-dismiss-dana-investigation-rejected

### 2026-09-04: Spanish judge links Mazón defense to evidence against Salomé Pradas

A Spanish judge ruled that Carlos Mazón’s defense regarding the DANA flood response strengthens criminal evidence against former counselor Salomé Pradas regarding emergency management delays.

3 sources. https://clstr.news/cluster/spanish-judge-links-mazn-defense-to-evidence-against-salom-pradas

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Cite as: Valencia DANA flood management investigation. CLSTR, https://clstr.news/situations/valencia-dana-flood-management-investigation