The main causes of the floods were the lack of drainage works and urban and real estate development without environmental control.[13]​[14]​[15]​[16]​ As specific causes, the following can be observed:.

• - Lack of hydraulic works, the drainage channels are not 100% operational and even if they were they would not be enough.

• - Climate change.

• - Lack of environmental awareness.

• - Garbage and other objects that clog gutters and drains.

• - Deforestation, and illegal clearing in areas of the north of the country.

• - Waterproofing of the soil due to the growth of cement surface.

• - Flaws in municipal urban planning codes not appropriate to climatic conditions.

• - Real estate development in recent decades that was not accompanied by the corresponding pluvial and runoff works.

According to the UBA Observatory of Law and Hydraulics, "numerous neighborhoods in the city were flooded and suffered the consequences for days without adequate attention to their emergency. Since the tragic floods of April 2, 2013, the GCBA has not carried out any relevant water infrastructure work*. Furthermore, according to the reports that GCBA sent to the Court of 1st Instance for Administrative and Tax Litigation No. 10, the only work in progress, not yet completed, for the Arroyo Medrano Basin is the first stage of the Sarmiento Park buffer basin "Parque Sarmiento (Buenos Aires)").[17]​*

[18]​ Legislators Milcíades Peña and Facundo Di Filippo criminally denounced alleged bribes and illicit association, as a result of the increase in cost and environmental risk in the works of the Arroyo Maldonado relief canal carried out by an Angelo Caracter construction company.[19]​[20]​ The judicial presentation notes other irregularities in the bidding and in the execution of the project. work[19]​[21]​[22]​.

A report issued in August 2012 by the Buenos Aires Audit indicated that the works to alleviate flooding in the neighborhoods of Belgrano "Belgrano (Buenos Aires)"), Villa del Parque "Villa del Parque (Buenos Aires)"), Villa Ortúzar, Agronomía "Agronomía (Buenos Aires)") and Parque Chas had been paralyzed for three years, the Buenos Aires Audit had reported execution in the network items pluvial.[23]​ The Legislature of the city of Buenos Aires approved in 2012, a law that authorized the Executive Branch of the city to issue bonds for 250 million dollars for works on the Vega stream. However, it had decided to cancel the tender for the flood control works in Arroyo Vega.[24]​[25]​

Two months later, residents summoned from the neighborhoods Mitre, Villa Pueyrredón, Saavedra, Villa Maipú and Núñez, protested on Avenida de Mayo due to the lack of payment of the promised subsidies for those flooded.[26]​.

The City's General Auditor's Office published a report in which they indicate that three works intended to prevent flooding have been stopped, in some cases for three years. The first is that of the Vega and Medrano streams, in the Belgrano area that was flooded. The work has been in the awarding stage since May 2009. The works on the Vega and Medrano streams (Belgrano), the Escaneo and the Ochoa streams (Pompeya). The second is in the hands of Mauricio Macri's nephew's construction company. In the third, the PRO management advanced the company the sum of twelve million pesos. The money was delivered four years ago and in the end, the work will not be done by that company. But the advance was never returned.[27]​.

In 2012, a budget of 11 million pesos was voted in the Buenos Aires Legislature to extend the rainwater network, so that there were no more floods, but deputies opposed to the city government said that the budget was executed, only 3 million of the total were used and the rest would have gone to other areas.[28]​.

As a result of this, the Vicente of the government María Eugenia Vidal was denounced; the chief of staff, Horacio Rodríguez Larreta; to the Minister of Security, Guillermo Montenegro; and Diego Santilli,[29]​[30]​

[31]​.

According to the official website of Unión por Todos, neither the Buenos Aires government, nor the Buenos Aires provincial government, nor the national government assumed responsibility for what happened and blamed each other.[16] Some 350,000 citizens were affected by the floods. The next day, Macri suspended his vacation in Brazil and returned to the city.[32][33]​.

The president said in her speech:

In the Federal Capital, the electrical energy service was affected by the large accumulation of rainwater, which affected at least eleven Buenos Aires neighborhoods for several hours.[34]​ In turn, the Buenos Aires train and subway services were decimated as a result of the storm; The circulation of cars and buses was also affected, with some flooding at the accesses to the Capital and Buenos Aires neighborhoods. There were delays in the departure of international flights and cancellations.[35] There were also losses of property by residents due to the water. In addition, 8 people died in this city: four of them were found in the neighborhood of Saavedra "Saavedra (Buenos Aires)") and the rest were recorded in the Buenos Aires neighborhoods of Colegiales "Colegiales (Buenos Aires)"), Villa Luro, Villa Ortúzar and Villa Urquiza "Villa Urquiza (Buenos Aires)")[3]​ (one of the deceased was a worker at the Los Incas station "Los Incas - Parque Chas (Subte de Buenos Aires)") of the Subway, who died electrocuted while he was carrying out maintenance tasks).[36]​ In addition, two more victims in the General San Martín District and in the La Matanza District, where hundreds of people had to be evacuated and various material damages were recorded.[37]​.

From the Radical Civic Union (UCR) they asked that the head of Government be investigated for abandonment of people, negligent damage and failure to fulfill the duties of a public official. The complaint was presented by the vice president of the UCR Capital, Marcelo Montero, and Lidia Zeballos, who denounced Macri.[30]​[38]​.

Months after the floods, of the 10,000 requests for subsidies, the Buenos Aires Government granted a total of 12.[39]​[40]​[41]​[42]​ Months before, both the Peronist leader Milcíades Peña and the leader of the Civic Coalition Facundo Di Filippo had criminally denounced the Head of the Buenos Aires Government, Mauricio Macri, for bribes and association illicit, as a result of the increase in cost and the environmental risk in the works of the Maldonado stream relief canal carried out by an Italian construction company associated with that of Angelo Calcaterra, Macri's first cousin. The opposition leaders accumulated a total of ten charges against the Head of Government. They also denounced the Minister of Urban Development, Daniel Chain, the representative of the Macri Group, Leonardo Maffioli, and thirteen other officials of the City Government.[19][30][43]​.

• - Flood in La Plata in 2013.

• - Flood in Bahía Blanca in 2025.

• - Climate of Argentina.

• - Wikimedia Commons hosts a multimedia category on 2013 Buenos Aires Flood.

The main causes of the floods were the lack of drainage works and urban and real estate development without environmental control.[13]​[14]​[15]​[16]​ As specific causes, the following can be observed:.

• - Lack of hydraulic works, the drainage channels are not 100% operational and even if they were they would not be enough.

• - Climate change.

• - Lack of environmental awareness.

• - Garbage and other objects that clog gutters and drains.

• - Deforestation, and illegal clearing in areas of the north of the country.

• - Waterproofing of the soil due to the growth of cement surface.

• - Flaws in municipal urban planning codes not appropriate to climatic conditions.

• - Real estate development in recent decades that was not accompanied by the corresponding pluvial and runoff works.

According to the UBA Observatory of Law and Hydraulics, "numerous neighborhoods in the city were flooded and suffered the consequences for days without adequate attention to their emergency. Since the tragic floods of April 2, 2013, the GCBA has not carried out any relevant water infrastructure work*. Furthermore, according to the reports that GCBA sent to the Court of 1st Instance for Administrative and Tax Litigation No. 10, the only work in progress, not yet completed, for the Arroyo Medrano Basin is the first stage of the Sarmiento Park buffer basin "Parque Sarmiento (Buenos Aires)").[17]​*

[18]​ Legislators Milcíades Peña and Facundo Di Filippo criminally denounced alleged bribes and illicit association, as a result of the increase in cost and environmental risk in the works of the Arroyo Maldonado relief canal carried out by an Angelo Caracter construction company.[19]​[20]​ The judicial presentation notes other irregularities in the bidding and in the execution of the project. work[19]​[21]​[22]​.

A report issued in August 2012 by the Buenos Aires Audit indicated that the works to alleviate flooding in the neighborhoods of Belgrano "Belgrano (Buenos Aires)"), Villa del Parque "Villa del Parque (Buenos Aires)"), Villa Ortúzar, Agronomía "Agronomía (Buenos Aires)") and Parque Chas had been paralyzed for three years, the Buenos Aires Audit had reported execution in the network items pluvial.[23]​ The Legislature of the city of Buenos Aires approved in 2012, a law that authorized the Executive Branch of the city to issue bonds for 250 million dollars for works on the Vega stream. However, it had decided to cancel the tender for the flood control works in Arroyo Vega.[24]​[25]​

Two months later, residents summoned from the neighborhoods Mitre, Villa Pueyrredón, Saavedra, Villa Maipú and Núñez, protested on Avenida de Mayo due to the lack of payment of the promised subsidies for those flooded.[26]​.

The City's General Auditor's Office published a report in which they indicate that three works intended to prevent flooding have been stopped, in some cases for three years. The first is that of the Vega and Medrano streams, in the Belgrano area that was flooded. The work has been in the awarding stage since May 2009. The works on the Vega and Medrano streams (Belgrano), the Escaneo and the Ochoa streams (Pompeya). The second is in the hands of Mauricio Macri's nephew's construction company. In the third, the PRO management advanced the company the sum of twelve million pesos. The money was delivered four years ago and in the end, the work will not be done by that company. But the advance was never returned.[27]​.

In 2012, a budget of 11 million pesos was voted in the Buenos Aires Legislature to extend the rainwater network, so that there were no more floods, but deputies opposed to the city government said that the budget was executed, only 3 million of the total were used and the rest would have gone to other areas.[28]​.

As a result of this, the Vicente of the government María Eugenia Vidal was denounced; the chief of staff, Horacio Rodríguez Larreta; to the Minister of Security, Guillermo Montenegro; and Diego Santilli,[29]​[30]​

[31]​.

According to the official website of Unión por Todos, neither the Buenos Aires government, nor the Buenos Aires provincial government, nor the national government assumed responsibility for what happened and blamed each other.[16] Some 350,000 citizens were affected by the floods. The next day, Macri suspended his vacation in Brazil and returned to the city.[32][33]​.

The president said in her speech:

In the Federal Capital, the electrical energy service was affected by the large accumulation of rainwater, which affected at least eleven Buenos Aires neighborhoods for several hours.[34]​ In turn, the Buenos Aires train and subway services were decimated as a result of the storm; The circulation of cars and buses was also affected, with some flooding at the accesses to the Capital and Buenos Aires neighborhoods. There were delays in the departure of international flights and cancellations.[35] There were also losses of property by residents due to the water. In addition, 8 people died in this city: four of them were found in the neighborhood of Saavedra "Saavedra (Buenos Aires)") and the rest were recorded in the Buenos Aires neighborhoods of Colegiales "Colegiales (Buenos Aires)"), Villa Luro, Villa Ortúzar and Villa Urquiza "Villa Urquiza (Buenos Aires)")[3]​ (one of the deceased was a worker at the Los Incas station "Los Incas - Parque Chas (Subte de Buenos Aires)") of the Subway, who died electrocuted while he was carrying out maintenance tasks).[36]​ In addition, two more victims in the General San Martín District and in the La Matanza District, where hundreds of people had to be evacuated and various material damages were recorded.[37]​.

From the Radical Civic Union (UCR) they asked that the head of Government be investigated for abandonment of people, negligent damage and failure to fulfill the duties of a public official. The complaint was presented by the vice president of the UCR Capital, Marcelo Montero, and Lidia Zeballos, who denounced Macri.[30]​[38]​.

Months after the floods, of the 10,000 requests for subsidies, the Buenos Aires Government granted a total of 12.[39]​[40]​[41]​[42]​ Months before, both the Peronist leader Milcíades Peña and the leader of the Civic Coalition Facundo Di Filippo had criminally denounced the Head of the Buenos Aires Government, Mauricio Macri, for bribes and association illicit, as a result of the increase in cost and the environmental risk in the works of the Maldonado stream relief canal carried out by an Italian construction company associated with that of Angelo Calcaterra, Macri's first cousin. The opposition leaders accumulated a total of ten charges against the Head of Government. They also denounced the Minister of Urban Development, Daniel Chain, the representative of the Macri Group, Leonardo Maffioli, and thirteen other officials of the City Government.[19][30][43]​.

• - Flood in La Plata in 2013.

• - Flood in Bahía Blanca in 2025.

• - Climate of Argentina.

• - Wikimedia Commons hosts a multimedia category on 2013 Buenos Aires Flood.