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Cidreira, Rio Grande do Sul (Brazil)

Last modified: 2020-07-14 by ian macdonald
Keywords: rio grande do sul | cidreira |
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Cidreira, RS (Brazil) image by Ivan Sache, 14 July 2020

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The municipality of Cidreira (12,668 inhabitants; 24,636 ha) is located 100 km east of Porto Alegre.

Cidreira originates in a domain granted in 1767 to Almoxarife-Mor Manuel Prereira Franco. Covering 4.5 leagues and having 2.5 leagues of seashore, the domain was composed of the fazendas of Cidreira, Rondinha, Roca Velha, Ponta do Mato and Porteira. Following tax evasion by its owner, the domain was subsequently confiscated by the crown and sold by auction; in 1819, Luiz José Ferreira Saraiva acquired the domain and would bequeath its northern part, composed of Roca Velha, Rondinha and Cidreira, to his son, Francisco Pereira Saraiva.
Summer residences, at the time straw-roofed huts with compacted sand floor, were initiated in Cidreira after 1860. The first permanent inhabitant was João Neves, who was commissioned by the government to prevent the building of huts without permission.
The first wooden buildings (huts, the church and hotels) appeared in the 1930s. The building of the road connecting Porto Alegre to the seashore, completed in 1958, initiated the urbanization of Cidreira.
The municipality of Cidreira was established by State Law No. 8,606 promulgated on 9 May 1988, separating from Tramandaí and Palmares do Sul, and inaugurated on 1 January 1989.
Municipal website

Ivan Sache, 14 July 2020

Description of the Flag

The flag and arms of Cidreira are prescribed by Municipal Law No.40 promulgated on 25 August 1989.

Article 1.
I. The flag, in dimensions 1.60 m in length on 1.10 m in width, is divided in three stripes: one vertical stripe, vertical, dexter, of 55 cm in length, covering the flag's whole width, and two horizontal stripes each of 1.05 m in length, the upper blue and the lower green, with the following meaning:
a) White represents the social element, peace, and the geographical element, the coastal dunes;
b) Blue represents the sky and the sea;
c) Green represents the native forests and reforestation.

II. The municipal coat of arms, placed dexter on the flag, in the center of the vertical white stripe, is composed of a crown with four Portuguese towers, a quartered shield surrounded by two rice plants, and, beneath, a scroll inscribed in the center with the municipality's name and on the sides with years "1726" and "1988", respectively, with the following meaning:
1) The crown, composed of four stylized Portuguese towers, argent, represents civil engineering, the municipality's main source of income and the four districts composing the municipality;
2) The Portuguese shield is quartered as follows:
a) in the upper left part, a street lined with Brazilian pines, representing the regional and urban infrastructure and reforestation.
b) in the upper right part, a representation of agriculture, in harmony with the natural environment;
c) in the lower right part, a representation of the resource supplied by bee-keeping, fishing and the natural resources;
d) in the lower right part, a representation of the tourism and nature components: the lighthouse, the sea and the dunes.
3) On the shield's sides, two rice plants symbolizing the municipality's agricultural resources;
4) Beneath the shield on a scroll salmon in black the municipality's name surrounded by dunes and "1726", the first historical date, and "1988", the year of original emancipation by Law No. 8,606 promulgated on 9 May 1988.

The coat of arms shall be inscribed in a rectangle of 57 cm in width on 42 cm in length, located in the center of the vertical white stripe, on the flag's dexter part.
Leis Municipais database


The explanation of the mural crown is fanciful, since Cidreira never had four districts. At the time of adoption of symbols, the municipality was composed of a single district (seat). The district of Pinhal was established by Municipal Law No. 112 promulgated on 14 November 1990, to be suppressed by Municipal Law No. 10,670 promulgated on 28 December 1995, which transformed it into the municipality of Balneário Pinhal. Accordingly, Cidreira remained composed of two districts, the seat and Costa do Sol, established by Municipal Law No. 318 promulgated on 22 March 1993.

The Cidreira dune field covers an area of c. 30 km2, from the town of Cidreira in the south to the sea resort of Tramandaí in the north. It is composed of barchans - crescent-shaped, transgressive dunes -, forming continuous dune chains up to 3 km in length. The average height of the dunes is 8 to 10 m, some of them peaking to 20 or 25 m. The main dune field is separated from the adjacent beach by a strip of dunes colonized by plants. Breaks in the strip allows sand from the beach to be carried by wind and "feed" the dune field. Field monitoring yielded a dune migration speed of 20 to 30 m/year.
L.J. Tomazelli, S. Rebello Dillenburg, E. Guimarães Barboza, M.L. Correa da Camara Rosa. 2008. Geomorfologia e potencial de preservação dos campos de dunas transgressivos de Cidreira e Itapeva, litoral norte do Rio Grande do Sul, Brasil. Pesquisas em Geociências 35, 47-55.

Ivan Sache, 14 July 2020