Urban expansion along water courses has generated socio-environmental
impacts related to forms of occupation and use of natural resources. The study aimed to analyze
the socio-environmental impacts on the affected population in the municipality of Melgaço, in
the state of Pará, to support the Participatory Municipal Master Plan, with technical information,
for more efficient management of local public authorities. Melgaço, is located at the joint mouth
of the Amazon River basin and the Tocantins River basin. The dissertation was organized in
the following chapter format: Chapter 2, presents the theoretical framework, adopted in the
research with the concepts mobilized to understand the theme studied - Cities and rivers in the
Amazon a history of denial, concepts of anthropocene, political ecology, justice environmental
and territorial, right to the city, sustainable city, environmental policies, environmental
management and local development. Chapter 3 presents the geoenvironmental characterization
of the area under study - Characteristics of the Tabocal River Basin, (altimetry, drainage,
geology, slope, geomorphology, pedology and land use), geographic location, historical
formation and participatory cartography. Chapter 4 explains the city's relations over and under
water - The paradox of the city and water, urban expansion, socio-environmental impacts,
reports from residents, and public authorities' views on the city's environmental management.
And in Chapter 5, alternatives and proposals for local management are represented, providing
greater sustainability to actions developed in urban space - The city and waters, sustainable
cities, diagnosis and prognosis for mitigating negative impacts. The research was carried out
from 2022 to 2023. The main relevant results: reports from interviewees, photographs, aerial
images, participatory cartography workshop, production of maps through geoprocessing,
technical note as a subsidy for the preparation of the Coastal Management Plan for Melgaço,
based on SDGs 06 and 11. It is concluded that this study allows reflections, a path to new
horizons, providing positive subsidies for mitigating impacts. Understanding a rethinking with
environmental wisdom and social justice, built based on endogenous needs, in partnership with
local public authorities, development aimed at sustainability.
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