Mapping of Center-Pivot Irrigated Agriculture in Brazil - 2013
This mapping represents the spatial distribution of agriculture that is irrigated by center pivots in Brazil. It was generated from Landsat 8 satellite images from the year 2013, through a partnership between the National Water Agency (ANA) and Embrapa. In the system available below, users can use tools to zoom in ("+") or out ("-") on a screen depicting a region up to the level of each center pivot in the map (red circles). It is also possible to visualize state borders, names of municipalities, highways, and hydrography. The mapping in the SOMABRASIL system is also available for cross-referencing with other agricultural and natural resource databases (http://mapas.cnpm.embrapa.br/somabrasil/webgis.html).
Maps superposed to regions with high irrigation demand (center pivots)
For the analysis of irrigated agriculture conditions, information produced by Embrapa and by the National Water Agency (ANA) were used to survey center pivots. Satellite images from 2013 allowed the identification of 17,878 center pivots, occupying an irrigated area of 1,179,176 ha and presenting an average size of 65.96 ± 40.67 ha. Around 90% of pivots are concentrated in the states of Minas Gerais (5,573 pivots, 366,428 irrigated ha), São Paulo (3,528 pivots, 168,674 ha), Goiás (2,872 pivots, 210,724 irrigated ha), Bahia (2,792 pivots, 192,223 irrigated ha), and Rio Grande do Sul (1,111 pivots, 76,081 irrigated ha). Approximately 45% of center pivots in Brazil are concentrated in the Paraná River Basin; and nearly 30% in the São Francisco River Basil. This is an important resource to monitor the availability of water for irrigation, as rainfall prognosis and water availability data can be crossed with pivot location data, representing a significant portion of the country's irrigated areas.
Figure 9 - Spatial distribution of center pivots in Brazil - 2013. Source: Embrapa/ ANA.
Irrigation Center Pivots
Mapping of the irrigated area and of the number of center pivot irrigation equipment in Brazil in 2013, for irrigation and water resource planning and management by the National Water Agency (ANA). The survey brings data obtained from the analysis of satellite images and observations by ANA and Embrapa technicians, which will allow a more precise calculation of the water demand, the crossing of such information with permissions, and the verification of the regularity of the equipment, for instance. Through the map, one can observe that nearly 80% of the area occupied by center pivots in the country is concentrated in four states: Minas Gerais (31%), Goiás (18%), Bahia (16%) and São Paulo (14%).