Springs are important environmental systems for the maintenance of hydrological, geomorphological and biological balance. However, in urban areas, these springs have been intensely modified by human action. One of the main consequences of urban interventions on the dynamics of springs is changes in water quality. One of the main consequences of urban interventions on the dynamics of springs is changes in water quality. In addition, periods of greater precipitation can interfere with this dynamic. Therefore, the present study aimed to evaluate the water quality index - WQI at the source of the Sussuapara stream in the municipality of Palmas-TO in the year 2021. Nine parameters were studied to assess water quality; four samples were collected in the dry months and four in the rainy months. The results obtained were compared with Conama Resolution no. 357 and showed that the WQI of the headwaters of the Sussuapara stream in the dry months was higher than in the rainy months, being classified as "Good" and "Regular", respectively. The results showed that the impacts caused by surface runoff and location of the spring are significant in the water quality index.
The present work aims to analyze the applicability of aerial images obtained with Unmanned Aerial Vehicle (UAV) in decision making regarding the choice of sewage collection network in a sector of the city of Palmas -TO. In order to arrive at a cost comparison between simple and double network that meets the necessity of sewerage of the sector studied. Through orthorectified images, it was specifically pointed the types of coverings, quantitative, for the items of demolition, removal and restoration of pavements and sidewalks. The usage of these images aimed to assess the accuracy in the budget of projects of these networks, since the practice used for the preparation of the budgets is made through visual inspection in loco or by estimation, being an expensive, slow and imprecise practice. The studied tool proved to be efficient, as it is possible to verify, with the resolution adopted for the images, the types of coating, precision in the quantitative survey through the orthomosaic.
As nascentes são sistemas ambientais importantes para a manutenção do equilíbrio hidrológico, geomorfológico e biológico. Porém, em áreas urbanas, essas nascentes têm sido intensamente modificadas pela ação humana. Uma das principais consequências das intervenções urbanas na dinâmica das nascentes são as alterações na qualidade da água. Além disso, períodos de maior precipitação podem interferir nessa dinâmica. Por isso, o presente estudo teve como objetivo avaliar o índice de qualidade das águas – IQA na nascente do Córrego Sussuapara no município de Palmas-TO no ano de 2021. Foram estudados nove parâmetros para avaliar a qualidade da água, sendo quatro amostras coletadas nos meses secos e quatro nos meses chuvosos. Os resultados obtidos foram comparados com a Resolução nº 357 do Conama e demonstraram que o IQA da nascente do Córrego Sussuapara nos meses secos foi superior aos meses chuvosos, sendo classificadas como “Boa” e “Regular”, respectivamente. Os resultados evidenciaram que os impactos causados pelo escoamento superficial e localização da nascente são determinantes para o índice de qualidade da água.
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