USE OF GEOSTATISTICAL MODELS IN THE SPACE-TEMPORAL EVALUATION OF WATER QUALITY OF AN AMAZONIAN HYDROELECTRIC RESERVOIR

The Tucuruí Hydro-Power Complex reservoir, Pará State, Amazon Region-Brazil, as well other reservoirs is subject to natural alterations and anthropogenic activities which in turn affect the environmental balance. aim of this work was verify if geostatistical models can be used spatial-temporal evaluation water quality reservoirs. Surfer 13® software interpolate spatial distribution data, two years surface physicochemical parameters were evaluated sixteen sampling stations. results isotopic maps showed low concentrations DO at station C1 Intermediate Period 2 (summer-winter), high concentration COD MP 1 (winter-summer) increased acidity stations C2 summer, suggesting that relationship between farming region cause impacts on aquatic ecosystem along reservoir.