The thesis deals with soils of the middle Elbe floodplain. Basic information about the development of Elbe floodplain is focused on the middle Elbe region. The aim of the thesis is to capture the floodplain development in the area of interest, including the description and comparison of soils at different transects in surroundings of Kostelec nad Labem. For this purpose several transects from the historical Elbe canalisation documentation were chosen. Additional to this, small soil survey was carried out at identical locations in 2013. Obtained information was confronted and evaluated.

A variabilidade espaçotemporal das inundações determinam os processos ecológicos e influenciam as atividades humanas no Pantanal. O entendimento da dinâmica das inundações é a chave para melhores práticas de gerenciamento e reação no caso de eventos extremos. Nesse estudo, métodos de quantificação de água e extração de sazonalidade foram aplicados numa série temporal de dez anos (2000 a 2009) das imagens MODIS13Q1 para a modelagem contínua das inundações. Foram determinadas 25 sub-regiões, totalizando 150.502 km2, baseado no regime das inundações e na geomorfologia. A área inundada variou de 5.539 km2 até 52.894 km2, com média de 18.329 km2, refletindo um período seco comparado às décadas anteriores. A maior parte do Pantanal (86.841 km2) inundou pelo menos uma vez no período, mas uma área relativamente grande permaneceu não inundada ou inundou por um período curto de tempo. Áreas não inundadas ou inundadas por curtos períodos de tempo ficaram espalhadas por todo o Pantanal, enquanto que áreas que inundam por longos períodos de tempo ou permanentemente inundadas se concentraram apenas em alguns locais. Quatro estágios principais de inundação foram determinados e os principais fluxos e armazenagem de água foram mapeados embora tenha ocorrido uma alta variabilidade interanual. Apesar das limitações de escala e problemas de sobreposição dos mapas, foi obtida uma boa concordância entre o mapa de frequência de inundação e os mapas de vegetação e solos. Modelos estatísticos logísticos não lineares foram determinados para as relações entre os principais compartimentos hidrológicos e foi possível estimar cenários passados de inundação baseado na relação entre a área inundada total do Pantanal e o nível do rio Paraguai. Relações de similaridade e de fluxos de água foram determinados entre os sub-compartimentos, caracterizando o comportamento espacial e temporal da água. Baseado nos dados e informações gerados foi proposto um sistema de alerta de inundações e secas para o Pantanal (SISMONPAN). / The flood variability in space and time determine the ecological process and influences human activities in the Pantanal wetland. The understanding of the flood dynamics is the key for better management practices and reaction in case of extreme events. In this study, methods for water quantification and seasonality extraction were applied to a ten years time series (2000 to 2009) of MODIS13Q1 images for continuous modeling of floods. Based in flood regime and geomorphology an area of 150.502 Km2 distributed in 25 sub-regions was determined for the Pantanal. The flooded area varied from 5.539 km2 to 52.894 km2, averaging 18.329km2, reflecting a dry period compared with the previous decades. Most of the Pantanal (86.841 km2) flooded at least once in the period, but a relative big area keeps no flooded or flooded in a short period. No flooded or short time flooded areas was spread over all the Pantanal, while long time to permanent flooded areas were concentrated in just some spots. Four main stages of floods were determined and the main water fluxes and water storage areas were mapped, although a high inter annual variability has been occurred. Despite the limitations of scale and map matching, a good agreement between flood frequency map with vegetation and soils maps was obtained. Nonlinear Logistic statistical models were determined for the relationships between the main hydrological compartments. It was possible to estimate past flood scenarios based in the relationship between total flooded area and Paraguay River stage. Similarity and water fluxes relationships were determined between the sub-compartments, characterizing the spatial and temporal water behavior. Based on the data and information generated, an alert system for dry and flood events (SISMONPAN) was proposed for the Pantanal.

This research proposes an Infrastructure to model complex systems for hydrological modeling. Currently, the three main hydrological packages are: i) SEAWAT (modeling groundwater flow); ii) HECRAS (modeling surface water flow); iii) HEC-HMS (modeling atmospheric water flow). Each of these models is self-contained and has a different timescale and simulation speed. Consequently, any integrated model will only run as fast as the slowest of the models. This makes it difficult to provide reliable and dynamic information on water levels and water availability for a given geographical region in a timely manner. The goal of this research is to facilitate the integration of multiple hydrological models from different hydrological packages by applying Electronic Design Automation (EDA) methodologies, including System Level Design (SLD) methodology, SystemC-AMS language, Python language and libraries (numpy, Statsmodels, and ctypes). The EDA methodology brings in the additional advantage of significantly improved simulation speed. The Infrastructure to Model Complex Systems applications is demonstrated using the following SEAWAT benchmark problems: i) Case 1; ii) Henry; iii) Elder problem. Simulation results from the aforementioned benchmarks are analyzed and discussed. Lastly, future research work is presented. / Includes bibliography. / Dissertation (Ph.D.)--Florida Atlantic University, 2014. / FAU Electronic Theses and Dissertations Collection

O aumento dos problemas ambientais e das transformações globais tem gerado preocupações, principalmente com áreas mais vulneráveis, como o Pantanal. Região onde os reflexos poderiam ser sentidos com maior intensidade, por se tratar de uma das maiores extensões de terras inundáveis do mundo, e provavelmente mais suscetível às mudanças provenientes de alterações climáticas e ações antrópicas. O Pantanal é uma planície inundável constituída por uma paisagem em constante transformação, sujeita a mudanças influenciadas por movimentos tectônicos, mudanças climáticas, sistemas deposicionais e hidrológicos, que resultam em diferentes processos pedogenéticos. O estudo proposto buscou entender a relação das formas do relevo e os materiais que as compõem, no contexto da hidrodinâmica do Pantanal de Poconé. Com relação aos tipos de solos encontrados nas formas de relevo estudadas, os mesmos apresentam características de hidromorfismo, com processos de redução e oxidação do ferro e manganês e cores diferenciadas, com a presença de mosqueados. É marcante a ocorrência de processos pedogenéticos como plintização e gleização, o primeiro presente em campos inundáveis, murundus e cordilheiras e o segundo mais ocorrente em campos inundáveis e murundus. As formas de relevo apresentaram solos do tipo: neossolos quartzarênicos, planossolos, plintossolos e gleissolos. Sendo encontrados de forma mais frequente, nas cordilheiras os neossolos e planossolos; nos murundus, planossolos e plintossolos e nos campos de inundação, gleissolos e plintossolos. As cordilheiras localizadas na parte norte da sub-região apresentaram-se mais arenosas e as da parte sul, com maiores teores de argila. Os campos inundáveis e murundus são compostos por solos com textura que variam de média-arenosa a argilosa. Ao considerar os atributos químicos dos solos das diferentes formas estudadas, pode-se dizer que as cordilheiras foram as que apresentaram maior acidez, contudo, de uma forma geral a maior parte dos solos que compõem as formas de relevo possuem acidez de média a elevada, com poucas exceções. A fertilidade e a CTC dos solos variam de média a baixa, sendo a maior parte dos solos analisados, distróficos. Conhecer as características de cada forma de relevo e os processos que atuam nas mesmas pode facilitar a compreensão das mudanças ambientais, provenientes de ações naturais e antrópicas, viabilizando o melhor uso da terra e possibilitando conhecer as modificações passíveis de ocorrer nesse ambiente. / Increasing scientific concern has been raised by global environmental problems and change worldwide, especially in more vulnerable areas such as the Pantanal basin, where the impacts of such changes are more evident and intense. The Pantanal floodplain is one of the largest floodplains in the world, and so, probably more susceptible to impacts due to climatic change and anthropic action. It is composed of a landscape in constant transformation, subject to impacts influenced by tectonic movement, climatic change and depositional and hydrological systems, which result in different pedogenetic processes. The proposed study aimed at understanding the relief forms and their material components, in the hydrodynamic context of the Pantanal de Poconé sub-region. The soil types identified in the studied relief forms presented hydromorphic qualities, with reduction and oxidation processes and differentiated colours, including mottled aspects. Pedogenetic processes such as plinthosol and gleysol building is evident, the former in floodplains, murundus and ranges, and the latter in floodpains and murundus. The relief forms presented the following soil types: arenosols, planosols, plinthosols and gleysols. Arenosols and planosols were more commonly found in ranges; in the murundus, planosols and plinthosols are more frequent, and so are gleysols and plinthosols in the floodplains. The ranges located in the northern part of the Pantanal do Poconé sub-region presented typically a rather sandy aspect compared to the southern part, with higher clay content. The floodplains and murundus are composed of soils with texture ranging from medium sand to clay. Considering the chemical properties of the soils from the different relief forms analyzed, the ranges had the higher acidity; however, most soils which compose the relief forms studied presented medium to high acidity, with a few exceptions. Fertility and CEC ranged from medium to low, and most analysed soils were dystrophic. Understanding the properties of each relief form and the processes that impact them is an important step in order to comprehend both natural and anthropic environmental changes. This comprehension should promote a more sustainable and efficient land use and allow understanding of the potential changes through which these environments may undergo.

Made available in DSpace on 2015-03-05T16:19:35Z (GMT). No. of bitstreams: 0 Previous issue date: 24 / Nenhuma / Este trabalho teve como objetivo avaliar os efeitos das perturbações hidrológicas (inundação e seca) na riqueza, densidade e composição da comunidade de macroinvertebrados em duas classes de áreas úmidas (formação palustre e meandro antigo de rio) de uma planície de inundação do Rio dos Sinos. A área de estudo localiza-se no município de Novo Hamburgo (Lomba Grande), no Estado do Rio Grande do Sul. Em cada classe de área úmida, um total de 12 coletas foi realizada ao longo de um ciclo anual (16/abril/2003 a 12/março/2004), onde 5 amostradas foram coletadas aleatoriamente utilizando um core (75 mm de diâmetro) inserido 5 cm no substrato. Um total de 1.229 espécimes de macroinvertebrados distribuídos em 50 taxa no meandro antigo de rio e 1.930 espécimes distribuídos em 48 taxa na formação palustre foram coletados. A maioria dos organismos observados eram insetos aquáticos (67,3% no meandro antigo de rio e 69,4% na formação palustre). A riqueza (F11,44 = 3,161; p < 0,05, meandro antigo de rio e F11,44 = 7,290; p / The objective of this study was to evaluate the effects of floods and drought on the macroinvertebrate richness, density and composition in two wetland classes (palustrine wetland and oxbow lake) associated to a floodplain system of the Sinos River basin over an annual cycle (2003-2004). The studied area was located in Novo Hamburgo city (Lomba Grande), in the South of the Brazil (Rio Grande do Sul). In each wetland class, twelve collections were carried out during an annual cycle (Apr 16/2003 to Mar 12/2004). In each collection, five samples were collected at random along an transect. The collections were developed using a corer (75 mm diameter) inserted 5 cm into the substratum. A total of 1,229 macroinvertebrates representing 50 taxa was observed in the oxbow lake and 1,930 macroinvertebrates distributed in 48 taxa were collected in the palustrine wetland. The majority of the taxa corresponded to aquatic insects (67.3% in the oxbow lake and 69.4% in the palustrine wetland). The macroinvertebrate richness (

Submitted by Geyciane Santos (geyciane_thamires@hotmail.com) on 2015-05-29T14:40:51Z No. of bitstreams: 1 Dissertação- Antonio Carlos Batista de Souza.pdf: 19738926 bytes, checksum: 05abe822ca8c35b9b0e7f061b6516200 (MD5) / Approved for entry into archive by Divisão de Documentação/BC Biblioteca Central (ddbc@ufam.edu.br) on 2015-05-29T18:00:05Z (GMT) No. of bitstreams: 1 Dissertação- Antonio Carlos Batista de Souza.pdf: 19738926 bytes, checksum: 05abe822ca8c35b9b0e7f061b6516200 (MD5) / Approved for entry into archive by Divisão de Documentação/BC Biblioteca Central (ddbc@ufam.edu.br) on 2015-05-29T19:48:32Z (GMT) No. of bitstreams: 1 Dissertação- Antonio Carlos Batista de Souza.pdf: 19738926 bytes, checksum: 05abe822ca8c35b9b0e7f061b6516200 (MD5) / Made available in DSpace on 2015-05-29T19:48:32Z (GMT). No. of bitstreams: 1 Dissertação- Antonio Carlos Batista de Souza.pdf: 19738926 bytes, checksum: 05abe822ca8c35b9b0e7f061b6516200 (MD5) Previous issue date: 2010-12-22 / It is intended with this study, to understand the process of formation / processing sites in a lowland complex Solimões-Amazonas, considering the main management practices and their impact on the organization of production of small farmers who inhabit the Coast Fishery, municipality of Manacapuru-AM. In these ancient sites in the past dominated large plantations and kids that dominated the landscape, but are now being enriched by fruit species, as cupuaçu, coconut, banana, acaí, jambo, lemon, cashew, soursop and many other species of economic value and nutritious. Even with the decline of the Amazon rubber boom, and consequently the loss of interest in the exploitation of rubber trees and cocoa trees, the ancient sites (groves) are still found in several properties of the Fishery Coast, even if mixed with other species of trees and fruit adapted to environmental conditions in the Amazon region. Despite the rubber and cocoa trees have lost their importance from the point of view, remain, because of the emotional bond that residents have with this environment, since many of them, especially older ones, were responsible for planting. However, residents and newer immigrants, without this bond of affection, began the process of clearing. The sites of the lower Solimões River live between disruption and adaptation. In the past, rubber and cocoa, today, mainly cupuaçu. Thus, we will reflect on the changes that are occurring at these sites, since the rubber crisis and the rise of other fruit species. / Pretende-se com esse estudo, compreender o processo de formação/transformação dos sítios no ambiente de várzea do complexo Solimões- Amazonas, considerando as principais práticas de manejo e sua repercussão na organização da produção dos pequenos agricultores que habitam a Costa do Pesqueiro, município de Manacapuru-AM. Nesses antigos sítios no passado predominavam grandes seringais e cacoais que dominavam a paisagem, mas que agora estão sendo enriquecidos por espécies frutíferas, como o cupuaçu, côco, banana, açaí, jambo, limão, caju, graviola e muitas outras espécies de valor econômico e nutritivo. Mesmo com a decadência do ciclo da borracha na Amazônia, e consequentemente da perda pelo interesse na exploração das seringueiras e cacaueiros, os antigos sítios (seringais) ainda são encontrados em várias propriedades da Costa do Pesqueiro, mesmo que consorciados com outras espécies arbóreo-frutíferas adaptadas às condições ambientais da região amazônica. Apesar das seringueiras e cacaueiros terem perdido a importância do ponto de vista comercial, permanecem, em virtude do laço afetivo que os moradores mantêm com esse ambiente, pois muitos deles, principalmente os mais idosos, foram os responsáveis pelo plantio. Contudo, os moradores mais novos e migrantes, sem esse laço afetivo, iniciaram o processo de derrubada. Os sítios do baixo rio Solimões vivem entre a ruptura e a adaptação. No passado, a borracha e o cacau, hoje, principalmente, o cupuaçu. Dessa forma, refletiremos sobre as transformações que vêm ocorrendo nesses sítios, desde a crise da borracha e a ascensão de outras espécies frutíferas.

Träd i tropiska våtmarker har uppmärksammats som en viktig källa till regionala och globala metan (CH4) utsläpp, då träd fungerar som utsläppskanaler för metan som bildas i sedimenten. Dock finns det en osäkerhet gällande säsongsvariation och rumslig variation samt mängden CH4 utsläpp från träd, eftersom kunskapen kring regionala flöden är begränsad. Därför strävar vi efter att optimera provtagningsinsatser för att öka möjligheten till representativa uppskattningar för olika typer av skogsekosystem och förbättra kunskapen om rumslig och temporär variabilitet för framtida mätningar i Amazonas. Vi undersökte variabiliteten i flöden av CH4 från träd belägna i tre periodvis översvämmade platser (Solimões, Negro and Tapajós) längs Amazonfloden, med olika karaktäristiska egenskaper. Studien genomfördes in situ med slutna kammare på 36 träd vid de tre provplatserna, under olika hydrologiska säsonger. Platserna visade en stor säsongsvariation i CH4-flöden, med de största bidragen under högvattensäsong. En signifikant skillnad mellan två av platserna upptäcktes endast under högvatten och detta kan vara ett resultat av vattnets varierande fysikaliska och kemiska egenskaper. Med hänsyn till variation inom studieplatserna har indelning av zoner betydelse för mätning av CH4-flöden i träd, då vattennivån är en påverkande faktor. En stor rumslig variation upptäcktes, med lägre flöden i zonen närmast land och med det högsta flödet i zonen där förhållanden varierar mest mellan blött och torrt. Detta mönster kan beaktas genom att utföra provtagningar längs zonerna med hänsyn till vattenavståndet. / Tropical wetland-adapted trees are recognized as an important source of regional and global methane (CH4) emissions, by transport of soil gas through wetland trees. However, spatiotemporal variability and controls on the magnitude of tree-mediated CH4 emissions remain unknown as fluxes are poorly constrained. Therefore, we aim to optimize sampling efforts to yield representative emission estimates for distinct types of forest ecosystems and improve knowledge on spatial and temporal variability. We examined the variability in tree stem mediated CH4 fluxes in situ, located in three different floodplains (Solimões, Negro and Tapajós) with various characteristics, during different hydrological seasons. The sampling was conducted by measuring fluxes from 36 trees at each location using closed chambers. All the three study sites, situated in the Amazon region, displayed seasonal variability in CH4 fluxes, with the largest contributions observed during the wet season. A significant difference between Solimões and Negro was detected during the wet season and this may be a result of the different chemical and physical characteristics between the sampling locations. As for within the study sites, zones played a significant role for CH4 flux from trees since the water level influences the fluxes. A strong spatial variability (lower fluxes in the land zone, and the highest flux obtained in the zone with greatest variability between dry and wet conditions) was found. This pattern can be addressed by sampling along flooded and non-flooded zones. / The Global Methane Budget

High Nature Value farmland (HNVf) refers to traditional agricultural landscapes which support high levels of biodiversity. HNVf is declining across Europe, through both intensification and abandonment, raising concerns about the conservation of species associated with it. One argument is that such HNV species are better described as being dependent on disturbance, and that management practices on HNVf mimics the effects of natural disturbance processes such as herbivory, fire, severe weather and flooding, which are often suppressed across much of Europe. If true, one innovative approach for conserving HNV species would be to restore natural disturbance processes, as advocated by the "rewilding" conservation movement. I set out to explore the feasibility of this approach, focusing on flooding. Restoration of flood regimes is receiving growing attention, not only for its biodiversity benefits but also to reduce the risk of flooding in downstream urban areas, improve water quality, and increase the amenity value of rivers. I carried out four linked studies. Each followed a broadly similar approach: I selected sampling locations both in floodplain areas and comparable surrounding farmland, I surveyed birds and butterflies as indicator taxa of biodiversity, I carried out habitat mapping, and I estimated disturbance through both field measurements and remotely sensed data. My first study was around the Pripyat river in Ukraine, which has a large floodplain that has had minimal human intervention. I found that several, but not all, HNV species had higher population densities in the floodplain than in the surrounding HNV farmland, and several more had approximately equal population densities in the two habitats. This suggested intact flood regimes can retain some species that are elsewhere restricted to HNVf. My second study was around the river Rhône, France, where a restoration project has increased flow in floodplain channels and improved their connectivity with the main channel. I compared restored and non-restored segments of floodplain channel, as well as farmland and other habitats. While I found significant differences in population densitiesbetween habitat types, few species showed significant differences between restored and non-restored segments, suggesting that restoration had only limited ecological impacts on the wider landscape. My third study investigated a more ambitious restoration project which has reconnected a large area of floodplain to the river Peene in Germany. I found many HNV species had equal or higher population densities in the restored floodplain than in the surrounding unrestored farmland. This demonstrates that it is possible to restore the effect of natural flood disturbance on habitats and species. However, not all HNV species benefitted from flood-disturbed habitats, so clearly other conservation interventions need to be considered. For the final study, pooling data from all three sites I looked for associations between species' traits and environmental variables. My aim was to identify traits which predict species' responses to the environment, and hence which species are most likely to benefit from restoration. However, I did not find any significant associations in my data. In conclusion, I demonstrated that flood-disturbed habitats are suitable for many species traditionally associated with HNV farmland, and further that restoring flood disturbance processes can recreate those habitats. As such, reconnecting rivers and restoring floodplains would be a useful conservation intervention for species threatened by the abandonment or intensification of HNV farmland in Europe. However, other species did not benefit, and require other conservation interventions, perhaps other forms of rewilding, or continued incentivisation of favourable farming practices.

A principal questão que esta pesquisa busca examinar é: O que caracteriza do ponto de vista físico, espacial e funcional o processo de ocupação e transformação das várzeas urbanas de São Paulo? O objeto de pesquisa proposto são as várzeas urbanas dos três principais rios que cortam a cidade de São Paulo: Tietê, Pinheiros e Tamanduateí. A principal hipótese para a questão central é que apesar das diferenças entre cada uma das várzeas analisadas, o que as caracterizam são as semelhanças em seu processo de ocupação: o histórico de ocupação com a canalização dos rios e ocupação excessiva de suas margens, a existência de ocupações setorizadas, a permanência de grandes glebas e áreas com baixa densidade construtivas e baixa densidade habitacional, infraestrutura urbana incompleta. O que faz com que se apresentem ainda hoje como principais áreas potenciais de transformação da cidade a partir de novas premissas de ocupação e uso do solo no seu padrão intraurbano. A caracterização da área de estudo foi realizada por meio de produção e análise cartográfica produzida pela autora, especificamente, para esta pesquisa. A leitura das diferenças e similaridades entre as várzeas urbanas foi de fundamental importância para a problematização e avaliação do potencial de ocupação futura das áreas estudadas. Também faz parte desta pesquisa a análise de projetos de arquitetura e urbanismo elaborados em áreas de várzea. A pesquisa levou à uma análise e avaliação do potencial de urbanização das várzeas dos principais rios de São Paulo, possibilitando a discussão dos novos processos de transformação, já em andamento, destas áreas. / The main question that this research seeks to examine is: What characterizes from a physical, spatial and functional point of view the process of ocupation and transformation of the urban floodplains of São Paulo? The proposed research object is the urban lowlands of the three main rivers that cut the city of São Paulo: Tietê, Pinheiros and Tamanduateí. The main hypothesis for the presented question is that despite the differences between each of the floodplains analyzed, what characterizes them are the similarities in their occupation process: the occupation history with the channeling of rivers and excessive occupation of their banks, existence of occupations sectorized, the permanence of large areas and areas with low density constructive and low density housing, incomplete urban infrastructure. What makes them still present today as main potential areas of transformation of the city from new premises of occupation and land use at its intra-urban level. The characterization of the study area was carried out through production and cartographic analysis, produced by the author, specifically, for this research. The reading of the differences and similarities between the urban floodplains was of fundamental importance for the problematization and evaluation of the potential of future occupation of the studied areas. Also part of this research is the analysis of architectural and urban planning projects elaborated in lowland areas. The research led to an analysis and evaluation of the potential of urbanization of the floodplains of the main rivers of São Paulo, allowing the discussion of the new processes of transformation, already underway, of these areas.

A principal questão que esta pesquisa busca examinar é: O que caracteriza do ponto de vista físico, espacial e funcional o processo de ocupação e transformação das várzeas urbanas de São Paulo? O objeto de pesquisa proposto são as várzeas urbanas dos três principais rios que cortam a cidade de São Paulo: Tietê, Pinheiros e Tamanduateí. A principal hipótese para a questão central é que apesar das diferenças entre cada uma das várzeas analisadas, o que as caracterizam são as semelhanças em seu processo de ocupação: o histórico de ocupação com a canalização dos rios e ocupação excessiva de suas margens, a existência de ocupações setorizadas, a permanência de grandes glebas e áreas com baixa densidade construtivas e baixa densidade habitacional, infraestrutura urbana incompleta. O que faz com que se apresentem ainda hoje como principais áreas potenciais de transformação da cidade a partir de novas premissas de ocupação e uso do solo no seu padrão intraurbano. A caracterização da área de estudo foi realizada por meio de produção e análise cartográfica produzida pela autora, especificamente, para esta pesquisa. A leitura das diferenças e similaridades entre as várzeas urbanas foi de fundamental importância para a problematização e avaliação do potencial de ocupação futura das áreas estudadas. Também faz parte desta pesquisa a análise de projetos de arquitetura e urbanismo elaborados em áreas de várzea. A pesquisa levou à uma análise e avaliação do potencial de urbanização das várzeas dos principais rios de São Paulo, possibilitando a discussão dos novos processos de transformação, já em andamento, destas áreas. / The main question that this research seeks to examine is: What characterizes from a physical, spatial and functional point of view the process of ocupation and transformation of the urban floodplains of São Paulo? The proposed research object is the urban lowlands of the three main rivers that cut the city of São Paulo: Tietê, Pinheiros and Tamanduateí. The main hypothesis for the presented question is that despite the differences between each of the floodplains analyzed, what characterizes them are the similarities in their occupation process: the occupation history with the channeling of rivers and excessive occupation of their banks, existence of occupations sectorized, the permanence of large areas and areas with low density constructive and low density housing, incomplete urban infrastructure. What makes them still present today as main potential areas of transformation of the city from new premises of occupation and land use at its intra-urban level. The characterization of the study area was carried out through production and cartographic analysis, produced by the author, specifically, for this research. The reading of the differences and similarities between the urban floodplains was of fundamental importance for the problematization and evaluation of the potential of future occupation of the studied areas. Also part of this research is the analysis of architectural and urban planning projects elaborated in lowland areas. The research led to an analysis and evaluation of the potential of urbanization of the floodplains of the main rivers of São Paulo, allowing the discussion of the new processes of transformation, already underway, of these areas.