Águas acumuladas em açudes e barragens na região de Santa Maria e flutuações em seus atributos físico químicos

Abstract

The quality of superficial waters of reservoirs depends on the form of ground use occupation on the catchments area. As the recharge is superficial emanation the enrichment of the water with plants nutrients is consequence of the form of around agriculture. This work was carried out to follow the fluctuations in chemical dam properties physical in the environs of Saint Maria to study the influence of the form of use of the ground in the one are used in the irrigation of rice and two for animal s drinking water. The collections of the water samples were carried out through recharge and discharge, covering five collections, in which had been evaluated the following physicist-chemistries attributes: pH, turbid, conductivity, temperature, orthophosphate, ions nitrate, nitrite, demand oxygen biochemist, sulfates, chlorides and potassium. For the gotten results it is observed that all the showed points present reasonable degree of impact. Although the physical-chemistry parameters alerting shows fluctuations during year, not explained by climatic events, the phosphorus level in all the periods of that they are not you explained, with climatic events, the phosphorus level in all the periods of sampling had been highest that the admitted ones for the CONAMA, alerting for the eutrofização processes installed, being able to contribute for a fast degradation in the quality of these waters.