Navegando por Assunto "Granting"

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Acesso aberto (Open Access)
Análise da disponibilidade hídrica da região hidrográfica do Tapajós como ferramenta de suporte à decisão para a outorga de recursos hídricos
(Universidade Federal do Pará, 2018-12-12) ROCHA, Gabrielle Souto da; FERNANDES, Lindemberg Lima; http://lattes.cnpq.br/4641468846318922
This work presents an analysis of the water availability in the Tapajós hydrographic region, located in the state of Pará. For the analysis of the availability, the data of the historical series of the fluviometric stations of Tapajós RH were analyzed, considering a period of 20 years (1987-2007). such as grant information and waivers granted to users of water resources in the region. After the analysis of the fluviometric series, the reference curves were obtained with the Siscah 1.0 program to determine the reference flows Q90 and Q95. The program was also used to perform the statistical calculations to obtain Q7,10 for each fluviometric station. For the determination of the sub-basins and drainage area to obtain the remaining flows, the Otto Pfafstetter method was used, detailing up to level 4. Observing the presented results, it was verified that for the reference flows Q90 and Q95 for one maximum flow rate of 70%, for each method, the remaining flow in the sub-basins does not constitute a scenario of scarcity or water stress, while Q7,10 presented a criticality scenario for the applicable uses. In relation to the uses granted in the Tapajós hydrographic region, it was verified that the municipalities with the highest number of granted processes are Itaituba and Jacareacanga, and the highest number of grant exemptions is distributed between the municipalities of Itaituba and Rurópolis. It was identified that the use of water resources for Tapajós hydrographic region, based on the purposes of granting and dispensing of requested concessions, is for the service of earthworks, compaction and wetting of roads in the region. These uses are directly linked to the expansion of the region through works such as ports, hydroelectric power stations and opening of new avenues to increase the flow of agricultural products.
Acesso aberto (Open Access)
Diagnóstico da disponibilidade hídrica superficial da bacia hidrográfica rio Capim - BHRC: como ferramenta de suporte à decisão para outorga de recursos hídricos
(Universidade Federal do Pará, 2024-07-05) SILVA, Irlane Quaresma da; TEIXEIRA, Luiza Carla Girard Mendes; 9773700229115395; https://orcid.org/0000-0002-0204-6825
The dissertation addresses the need to monitor the quantitative water balance in the Rio Capim Watershed (BHRC), Pará, Brazil, due to the variability of precipitation throughout the year and water scarcity in some areas during dry periods. The general objective is to determine the water availability of BHRC based on the regularization of water users (issued and active water permits) as a subsidy for water resource management efficiency. To achieve this objective, the study was conducted in five stages: literature review, data collection of granted water interferences, organization of vector data for ottobasins and surface water availability from the Ottocodified Hydrographic Database of Pará (BHO/PA), data processing, and quantitative water balance assessment. Results revealed that certain municipalities have significantly more granted water permits than others, such as Paragominas (29.5%), Dom Eliseu (25%), and Ipixuna do Pará (17.5%), totaling 72% of all issued permits. Surface water in BHRC is utilized for various purposes, with irrigation being predominant, accounting for 79% of the total captured volume. Other significant uses include mineral extraction and industrial purposes, totaling 18% of the captured volume. It was identified that 180 ottobasins are directly impacted by granted water withdrawals, while 3,081 ottobasins are indirectly impacted downstream, totaling 3,181 impacted ottobasins throughout the watershed. The Surubiju River and its tributaries show the highest impact, with 89 directly impacted segments and a withdrawal flow of 206,355.73 cubic meters per day. These findings underscore the need for continuous and detailed monitoring to ensure water resource sustainability in BHRC and serve as a critical tool for decision-making in water resource allocation in Pará State.