A vistoria confirmou a ocorrência da inundação.

Vistoria usually means an inspection, survey, or official check. It is often used in administrative, technical, legal, insurance, or property contexts.

In this sentence, A vistoria confirmou... means that the inspection or the official inspection process confirmed something.

It sounds more formal than a very general word like verificação.

Portuguese often uses the definite article where English may or may not use the.

So:

• A vistoria = the inspection

This refers to a specific inspection, not inspections in general. In Portuguese, using the article here is completely normal and expected.

Also, vistoria is a feminine noun, so the article is a.

Confirmou is the pretérito perfeito simples (simple past / preterite) of confirmar.

It means:

• confirmed

So:

• A vistoria confirmou... = The inspection confirmed...

This tense is used for a completed action in the past.

Because confirmou presents the confirmation as a completed event.

• confirmou = confirmed / did confirm
• confirmava = was confirming, used to confirm, or confirmed in an ongoing/background sense depending on context

In this sentence, the idea is that the inspection reached a conclusion, so confirmou is the natural choice.

Here, ocorrência means occurrence, happening, or incident.

So a ocorrência da inundação is literally:

• the occurrence of the flood
• or more naturally, the fact that the flooding occurred

This is quite formal and bureaucratic language. In everyday speech, people might simply say confirmou a inundação if the context is clear.

Because a ocorrência da inundação is more formal and precise.

It focuses on the fact that the flooding took place, not just on the flood as a thing.

Compare:

• confirmou a inundação = confirmed the flood / confirmed there was flooding
• confirmou a ocorrência da inundação = confirmed the occurrence of the flooding

The second version sounds more official, technical, or administrative, like language in a report.

Da is a contraction of:

• de + a = da

So:

• da inundação = of the flood/flooding

This contraction is mandatory in normal Portuguese spelling when de comes before the feminine singular definite article a.

Other common contractions are:

• do = de + o
• dos = de + os
• das = de + as

Because inundação is being treated as a specific event, not as an abstract general idea.

So:

• da inundação = of the flood / of the flooding
• de inundação would sound incomplete or unusual here

The article helps identify it as the particular flooding being discussed.

It can correspond to either flood or flooding, depending on context.

• inundação often refers to flooding as an event
• in some contexts it can also mean a flood

In this sentence, because of ocorrência, flooding may sound especially natural in English:

• The inspection confirmed the occurrence of the flooding.

But if the meaning shown to the learner uses flood, that is also fine.

Yes, but it sounds formal, technical, and a bit bureaucratic.

You might see this kind of wording in:

• inspection reports
• insurance documents
• civil protection reports
• legal or municipal documents

In everyday conversation, a speaker might say something simpler, such as:

• A vistoria confirmou a inundação.
• A vistoria confirmou que houve uma inundação.

Sometimes yes, but not always with exactly the same nuance.

• vistoria often suggests an official inspection, especially of property, damage, vehicles, buildings, or compliance
• inspeção is also inspection, but it can sound slightly broader or more general

In many administrative contexts, vistoria is the more idiomatic choice.

The structure is:

• A vistoria = subject
• confirmou = verb
• a ocorrência da inundação = direct object

Inside the object:

• a ocorrência = head noun
• da inundação = complement meaning of the flooding

So the sentence is built very straightforwardly:

Subject + verb + object

Because Portuguese can express the idea using a noun phrase instead of a full clause.

Compare:

• A vistoria confirmou a ocorrência da inundação.
• A vistoria confirmou que houve uma inundação.

Both are correct.

The version with ocorrência is more compact and formal. The version with que houve... is often more conversational and more directly similar to English confirmed that there was flooding.

A few points may be tricky:

• vistoria → the stress is on ri: vistoRIa
• confirmou → the final ou in European Portuguese is not like a strong English ow; it is usually a more closed sound
• ocorrência → stress on rên: ocorRÊNcia
• inundação → the ending -ção is pronounced roughly like são in European Portuguese, with a nasal sound

Also, in European Portuguese, unstressed vowels are often reduced more than in Brazilian Portuguese, so the sentence may sound more compressed than an English speaker expects.