of the rainy season, there have been increasing reports of smoke from burned-over land in sugarcane plantations and scrubland, mainly in the rural area around the city, leading the federal court to prohibit such activity in the region. Hailstorms are not common in the city, but one of the most recent occurred on 17 February 2010. Ecology and environment The original vegetation in the area of Águas de São Pedro was the cerrado, a mixed formation classified into two strata: the upper stratum, composed of trees with variable height of from , with crowns often sparse and spaced apart, and the lower stratum, composed of continuous coverage of grasses and other plants less than a meter tall, and trees with trunks and twisted and gnarled branches, thick bark, large leaves, and thorns. This natural vegetation, however, is quite devastated. Today the vegetation is predominantly planted. The city has , 17.40% of its total area, of reforested areas, mostly concentrated in Dr.Octavio Moura Andrade Park in the northwest, and , or 0.69% of its total area, of floodplain vegetation, all concentrated on the banks of the Araquá River in the southeast portion of the municipality. Demographics As of the 2010 Brazilian Census recorded by the Brazilian Institute of Geography and Statistics (IBGE), Águas de São Pedro has a population of 2,707. Of that total, 2,361 inhabitants are White (87.22%), 279 are Pardo (brown) (10.31%), 41 are Black (1.51%), and 26 are Asian (0.96%). It is the 594th most populous city in the state, and has a population density of 749.45 inhabitants per square kilometer. Of the total population, 1,262 inhabitants were men and 1,445 were women. Half of the housing units of the city (50.6%) are owned by vacationers. Many people stay in the municipality only on weekends and holidays and have their homes just for recreation and as a real estate investment. In the year 2000, 305 people (16.2% of the city's population) stated having some type of disability, almost two percent higher than the national average. The Municipal Human Development Index (MHDI) of Águas de São Pedro, is at 0.854, considered very high by the United Nations Development Programme (UNDP), and is the second highest in the state of São Paulo, as well as the second highest in Brazil. Considering only education, the index is at 0.825, compared to 0.637 for Brazil as a whole; the longevity index is