Domínio das águas no trecho perenizado do rio piancó pelos reservatórios coremas e mãe d'água: estudo de caso.

Abstract

The Piancó River Incremental Basin is inserted in the Piancó Piranhas Açú River Basin. Its main watercourse, the Piancó River, has strategic importance for regional development since it is a vital source for the development of various socioeconomic activities carried out along its course. Its main watercourse, the Piancó River, has strategic importance for regional development since it is a vital source for the development of various socioeconomic activities carried out along its course. The section has systems of adductor that caters eighteen localities. The objective of this work was to present and discuss the domain of the Piancó river waters, in the section with the regularized flow up to its mouth, starting from the more general study of the Piancó river basin, in the Physiographic, pedological, Of soil use and occupation and hydrological characteristics and information. Specifically, on the part of the regularized river, in terms of the dominance, availability and quality of the water resulting from the various uses, considering the climatic variability occurred over time, with the consequent variation of the volume stored in the reservoir system and its Influence on the different forms of water use to the regularized river logo. It can be concluded that the water quality in relation to the analyzed parameters does not change the temperature inside the basin, Electrical conductivity occurs a small increase in its values, however within the range recommended by the legislation, Turbidity there was a slight increase only in the period Rainy season keeping within acceptable range for the rest of the time, Dissolved Oxygen in general occurred a small increase in drought period caused by the elevation in the level of altrophization with intense photosynthesis activity. It was also possible to conclude that the domain of the water part of the basin is of state domain that has as its managing organ AESAA occurrence of maximum flows (floods) is conditioned to the flow of sancria of the reservoir systems, to a lesser proportion of the flood formation in the associated BHIRP The occurrence of intense rains in the area of the basin. However, the greatest variation up to 400 years of recurrence period with full flow rates reaching 900m3 / s. The minimum flows are conditioned to the flow of regularization most of the time mainly in the dry season, leaving the flows of Reference Q7 / 10 and Q90 with values of 1.087 and 3.689 respectively.