Santana do Paraíso is a Brazilian municipality located in the interior of the state of Minas Gerais, in the Southeast Region of the country. It is situated in the Vale do Rio Doce and is part of the Vale do Aço Metropolitan Region, approximately east of the state capital. The municipality covers an area of just over , with constituting the urban area, and its population was estimated at 48,286 inhabitants in 2024.

The exploration of the region where the city now stands began in the 19th century, through expeditions ordered by John VI of Portugal aimed at occupying the area, which became feasible only after the evangelization of local indigenous peoples by Guido Marlière after 1819. Marlière also facilitated the construction of roads, later used by tropeiros. Near the present-day city center, at Cachoeira do Engenho Velho, a rest stop was established, which evolved into a farm and commercial hub, around which the settlement known as Taquaraçu formed. This settlement became the district of Santana do Paraíso in 1892.

The area experienced further development due to the influence of industrial complexes in the current Vale do Aço region during the 1940s and 1950s. In 1959, it was selected as the site for the Ipatinga Airport, which remains the only airport in the region. Its proximity to Ipatinga, the headquarters of Usiminas, spurred urban growth and the formation of a new urban nucleus in a conurbation with the neighboring city, parallel to the original district seat. With its status as a dormitory city and recent industrial investments within its territory, emancipation occurred in 1992. The sustained industrial activity in the region contributed to the establishment of the Vale do Aço Metropolitan Region, one of the main urban centers in the state's interior.

Beyond its economic and demographic significance, the municipality is home to numerous trails, forests, lagoons, and waterfalls open to visitors. A key landmark in the city is the Santana Mother Church, maintained by the local parish. Cultural expressions include a congado group, handicrafts, and festive events such as the city’s anniversary celebrations, the Feast of the Divine, and the day of Saint Anne, the municipal patron saint.

History Colonization of the region

The area of present-day Santana do Paraíso saw little significant colonization until the mid-19th century, except for the presence of Nack-ne-nuck, descendants of the Botocudos. Expeditions in search of precious metals also reached the areas near the Doce River, but exploration only began after 1809, under orders from John VI of Portugal, who sought to civilize the indigenous peoples of the Vale do Rio Doce. Consequently, the lands were transferred to Antônio Rodrigues Taborda, who led the occupation efforts. However, resistance from the natives, dense forests, and the prevalence of tropical diseases hindered exploration.

In 1819, Frenchman Guido Marlière was appointed administrator of the Doce River region, achieving pacification of the indigenous peoples and opening roads, many of which were later used by tropeiros.Caminhos Gerais Magazine, no. 21, p. 17.Caminhos Gerais Magazine, no. 35, p. 23. One such road, connecting Antônio Dias and Coronel Fabriciano to Ferros, passed by Cachoeira do Engenho Velho, near the current center of Santana do Paraíso, where a rest stop was established. This place became known as Taquaraçu, meaning "large bamboo," and evolved into a reference point and commercial center, marking the beginning of a settlement.

Population and economic expansion

The first commercial hub in Taquaraçu was the Cachoeira do Engenho Farm, which over time was equipped with a mill, coffee and rice cleaning machines, and grain warehouses. The fertile land, abundant game, and numerous watercourses suitable for fishing attracted new residents. Expeditions followed the course of the Achado Stream and its tributaries around 1845 to explore local lands. On August 16, 1885, a group of residents donated land in the name of Saint Anne, intended for housing the poor. On the same occasion, the first church of the settlement, dedicated to Saint Vincent, was consecrated.

Due to the settlement’s growth, municipal law no. 26, dated November 16, 1892, established the district, named Ipanema and subordinated to Itabira. Under state law no. 556, dated August 30, 1911, the district was renamed Santana do Paraíso and transferred to Ferros, but it was later reassigned to the municipality of Mesquita by state law no. 843, dated September 7, 1923. The name "Santana do Paraíso" references the patron saint Saint Anne and the natural attractions, reminiscent of a "paradise". The area saw further development influenced by the establishment of Acesita in Timóteo in the 1940s and Usiminas in Ipatinga in the 1950s.

The proximity of Santana do Paraíso to the so-called Vale do Aço, combined with easy access to Ipatinga via MG-232, facilitated the expansion of the original district’s urban core. Meanwhile, a new development zone emerged in another part of the municipal territory, near the border with Ipatinga, intersected by BR-381 and BR-458. Along these highways, numerous subdivisions were established, particularly after the 1980s, driven also by the construction of the Ipatinga Airport in Santana do Paraíso territory in 1959, near BR-381. With the creation of these new neighborhoods, a conurbation with Ipatinga’s urban area emerged, parallel to the original seat of Santana do Paraíso, integrating the municipality into the Vale do Aço urban agglomeration.

Emancipation and the 21st century

Due to its border with Ipatinga’s urban perimeter and easy access to it, Santana do Paraíso recorded the highest population growth rates in the Vale do Aço between the 1990s and 2000s. The establishment of an industrial district in the Ipatinga Airport region also encouraged the settlement of companies within the municipal territory. This development led to emancipation through state law No. 10,704, dated April 27, 1992, and published on April 28, 1992, which came into effect on January 1, 1993. In areas previously used for agriculture and livestock, there was a gradual shift to eucalyptus cultivation to supply the pulp mills of Cenibra in Belo Oriente, with reforestation areas covering over 40% of Santana do Paraíso territory by the early 2010s.

As a dormitory city close to Usiminas, the municipality received investments and revenues from the company, such as airport operations and the construction of an industrial landfill alongside the sanitary landfill of the Vale do Aço Waste Center (CRVA), inaugurated in 2003. In the 2000s, there was a plan to build an industrial unit in the municipality, but the project was halted due to the 2008–2012 financial crisis.

Alongside the municipality’s economic growth, the conurbation with the Vale do Aço agglomeration, whether related to local companies or not, led to disorganized occupations, deforestation, and precarious subdivisions since the 1990s, particularly in the city’s periphery. Given the sudden population increase and relatively recent emancipation, Santana do Paraíso lacked sufficient resources and infrastructure to implement necessary public policies. Thus, the municipality’s urban growth was not matched by socioeconomic development capable of meeting the population’s needs.

Geography

The municipality’s area is , representing 0.1713% of Minas Gerais, 0.1087% of the Southeast Region, and 0.0118% of the entire Brazilian territory. Of this total, constitutes the urban zone. According to the regional division in effect since 2017, established by the IBGE, the municipality belongs to the Intermediate and Immediate Geographic Regions of Ipatinga. Previously, under the division into microregions and mesoregions, it was part of the Ipatinga microregion, included in the Vale do Rio Doce mesoregion.

Topography and hydrography The landscape's composition is the result of fluvial erosion and its action on Precambrian granite-gneiss rocks. Average altitudes range from 200 meters in the south, near the Doce River course; to 850 meters in the Serra do Achado region in the northwest, reaching up to at the source of the Achado Stream. The city center is situated at 300 meters altitude. The southern areas feature plains and slightly undulating terrain, while the northwest, nearing the Serra do Achado, becomes markedly rugged. Santana do Paraíso lies within the Doce River basin, which separates the municipality from the territories of Caratinga and Ipaba. The municipal territory encompasses four main sub-basins, all draining into the Doce River: the Bueiro Stream and Entre Folhas Stream, and the Achado Stream () and Garrafa Stream (). Only the latter two cover parts of the urban perimeter. The Achado Stream originates in a rugged area and, besides being home to hundreds of other springs in its sub-basin, features several waterfalls along its course. This stream is a tributary of the Taquaraçu Stream, another significant watercourse in the municipality’s rural zone, which flows into the Doce River.

Neighboring municipalities and metropolitan region

Santana do Paraíso borders the municipalities of Belo Oriente to the north, Ipaba to the east, Caratinga to the southeast, Ipatinga to the south, and Mesquita to the west. The region’s rapid growth has blurred political boundaries, forming the Vale do Aço Metropolitan Region (RMVA), which includes Santana do Paraíso alongside the cities of Coronel Fabriciano, Ipatinga, and Timóteo, plus 24 other municipalities in the so-called metropolitan belt. As mentioned, Santana do Paraíso serves as a dormitory city for the RMVA while being home to the region’s only airport and offering the most land suitable for urban expansion. The region gained international recognition because of the major companies that are based there, such as Cenibra (in Belo Oriente), Aperam South America (in Timóteo), and Usiminas (Ipatinga), all with significant export volumes. Despite its recent settlement, it is one of the state’s key inland urban hubs.

Climate

Santana do Paraíso has a tropical savanna climate (type Aw according to the Köppen classification), with an average annual temperature of and average rainfall of per year, concentrated between October and April. The wet season comprises the hotter months, while the dry season covers milder months. Autumn and spring serve as transitional seasons. The transition between dry and wet periods is marked by thunderstorms and high thermal amplitude, especially from late winter to spring.

Precipitation primarily falls as rain, occasionally as hail, and may be accompanied by lightnings and strong gusts. According to the Atmospheric Electricity Group of the National Institute for Space Research (ELAT/INPE) in 2018, the municipality has a lightning density of 2.007 strikes per km²/year, ranking 513th in the state and 3,966th nationally. Fog occurs with high humidity and low temperatures. However, low humidity levels may occur during the dry season or prolonged Indian summers. During these periods, dry air combined with pollution increases pollutant concentration, worsening air quality.

The prevailing wind originates from the east, with the windiest period between August 1 and November 29, averaging 10.7 kilometers per hour, slightly stronger in September and October. During the calmer period from March to June, the average speed ranges between 8 and 9 kilometers per hour. At Ipatinga Airport, extreme temperature records range from on May 19, 2022, to on October 31, 2012, and November 18, 2023. On October 16, 2015, the minimum relative humidity reached 17%. On the night of January 12, 2025, Santana do Paraíso was hit by a storm with of rainfall in a few hours, according to municipal measurements, the highest volume ever recorded in the city. This event caused floods and landslides in several parts of the city, resulting in one fatality.

Ecology and environment