Khartoum State in Sudan is subject to the erratic and intense rainfall during the short rainy season and dryness and heat throughout the rest of the year. High intensity rainstorms with a short duration have become more frequent in the area during the last two decades resulting in cities inundation and flash floods in the rural parts. On the other hand, the dry season means hot weather in the urban parts and water shortage in the rural part. Rural areas are dependent on the runoff water brought about by the seasonal streams as a source of water. For this study, Khartoum City Center and Seleit area were taken to investigate the application of water harvesting in the urban and rural areas, respectively. Accordingly, the hydrological characteristics and the specification of the potential water harvesting sites and systems were examined. For Khartoum City Center, characteristics of the drainage system were examined using ArcGIS platform. It is found that the drainage system covers 42% of the area with total capacity of 24000 m3. Daily rainfall data for urban meteorological station were used to calculate the probability and the return period of the rainfall, as well as the potential runoff. Rainfall probability of occurrence was calculated applying Gumbel distribution method for extreme events that were arranged according to the Peak-over-Threshold method. The potential runoff that could be generated from a certain rainfall was calculated using the Natural Resources Conservation Services method provided by the United States Department of Agriculture (US-NRCS). Accordingly, the curve number was calculated depending on the land use/land cover and the hydrological soil group. Consequently, the weighted curve number is found to be 94%, indicating dominant imperviousness. 13.1 mm rainfall depth produces runoff volume equal to the drainage system capacity with return period of one year; whereas more than four folds the drainage system capacity is produced by 30 mm rainfall depth that is considered the threshold for raising flood hazard. Six potential sites for roof rainwater harvesting were selected. Accordingly, it is found that, the application of roof water harvesting in 18% and 72% of the commercial and business district buildings can accommodate the runoff resulting from the 13.1 and 30 mm rainfall depth, respectively. Hence, impounding rainstorm water would help managing the urban runoff water, and consequently, the stored water could be used for making more green areas that will enhance the urban environment. Three watersheds of ephemeral streams (wadi), namely Wadi El Kangar, Wadi El Seleit, and Wadi El Kabbashi make up Seleit area. Distinct maps were prepared in ArcMap for the calculation of the potential runoff and the specification of the appropriate water harvesting sites and systems. The Wadis watersheds areas are found to be 540, 344 and 42 km2 for Wadi El Kangar, Wadi El Seleit and Wadi El Kabbashi, respectively. Daily rainfall data of rural meteorological station were classified into three groups representing the soil dry (AMCI), moderate (AMCII), and wet (AMCIII) moisture conditions; the respective CNI, CNII, and CNIII values were calculated accordingly. The weighted CN values indicate high runoff potential within the three soil moisture conditions. Accordingly, the rainfall thresholds for runoff generation for AMCI, AMCII and AMCIII conditions are found to be respectively 18.3 mm, 9.1 mm and 4.4 mm for Wadi El Kabbashi and 22 mm, 11 mm and 5 mm for both Wadi El Seleit and Wadi El Kangar. El Kangar dam subwatershed was used for calibrating the potential runoff calculated by the NRCS method. Since the Wadis are ungauged, Google Earth and GIS platforms were used to calculate geometrically the volume of the dam reservoir water for three years. This volume was compared to the annual runoff calculated by the NRCS method. Consideration to different factors was made to locate the potential water harvesting sites. Accordingly, water harvesting systems for fodder and crop plantation; sand storage surface or subsurface dams; or groundwater recharge, were specified. The socio-economic study revealed that the financial capacity, if any, of the villagers is very limited. Thus, the financial source for the construction of the suggested potential water harvesting or the rehabilitation of the existing ones is questionable. Hence, other potential financial sources are needed to help executing water harvesting projects in the region, e.g. Khartoum State Government. Applying water harvesting in Seleit area is found to be promising. Improving the livelihood of the villagers by applying runoff water harvesting could assure better water accessibility, better income generation from farms production, and allocation of time for other activities, e.g. education. This would be reflected in reduced migration to nearby cities and stabilized market supply of agricultural and animal products. Therefore, the development of the rural part is of great benefit to the development of Khartoum State, as long as the interdependency and mutual benefit between the rural and urban areas, represented by the local food and labor market, remain exist.

This research examines the application of a Classic Glaserian Grounded Theory methodology to the phenomenon of drought when viewed from the perspective of household water users in southern England. The resulting conceptual work calls into question the effectiveness of water-wise messaging and current Government policies on water management, by highlighting the double assurances afforded to the public through their own observations of the natural cycling of water resources between atmosphere and land, and the continuous operation of the regulated water industry, that together sustain blind belief in the ongoing availability of potable water resources. To establish a clear separation between the development of substantive theory and mixed method studies that claim to take a grounded theory approach that are generally more popular within the discipline of Human Geography, the theory is presented alongside two pieces of work; a collection of modern drought histories and a questionnaire. Developed as part of the necessary process of cycling alternate projects to enable a theory to emerge from the data whilst the researcher is distracted from forcing her own ideas onto it, both these pieces can be viewed separately or as supportive companions to the theory. Additionally, in acknowledging the difficulty in presenting a Classic Grounded Theory in the traditional discussional form, for the benefit of the reader the theory is preceded by an autoethnography, which incorporates descriptive elements taken from field notes and the author’s personal water diary. These works draw data from subjects in three counties in England (Norfolk, Kent, and Devon), following the northwest – southeast rainfall gradient. Supplementary material for the drought histories is drawn from local and national archives and recorded oral histories. The primary emphasis of this work is placed on assessing the merits of each of the methods deployed in addressing environmental social science issues in the context of climate change, which hitherto have been focused on perception questionnaires and the development of popular cultural typologies.

This thesis applies securitisation theory to the Israeli-Palestinian case with a particular focus on the potential for desecuritisation processes arising from Israeli-Palestinian cooperation/coexistence efforts in peace education and water management. It aims to apply securitisation theory in general and the under-employed concept of desecuritisation in particular, to explore the limits and prospects as a theoretical framework. Concepts, arguments and assumptions associated with the securitisation theory of the Copenhagen School are considered. In this regard, the thesis makes a contribution to Security Studies through its application of securitisation theory and sheds light on a complex conflict situation. Based on an analytical framework that integrates the concept of desecuritisation with the concepts of peace-building and peace-making, the thesis pays attention to desecuritisation moves involving Israeli and Palestinian civil societies through peace education and water management. The thesis contributes to debates over the problems and prospects of reconciliation between Israelis and Palestinians, so making a significant empirical and theoretical contribution in the development of the concept of desecuritisation as a framework for analysing conflict resolution. The thesis develops an analytical framework that combines political level peace-making with civil society actors' peace-building efforts. These are seen as potential processes of desecuritisation; indeed, for desecuritisation to occur. The thesis argues that a combination of moves at both the political and societal levels is required. By contrast to securitisation processes which are mainly initiated by political andlor military elites with the moral consent of society (or 'audience' in Copenhagen School terms), processes of desecuritisation, especially in cases of protracted conflicts, go beyond the level of elites to involve society in cultural and structural peace-building programmes. Israeli-Palestinian peace education and water management cases are employed to illustrate this argument.

Ancient settlements in Oman are frequently found where crops can be cultivated with groundwater distributed to fields by gravity flow. These irrigation systems are called aflāj (s. falaj), and they are still pivotal to community life: in 1997 over 3000 such systems were still in use. The allocation of falaj water among farmers traditionally depended on the use of the sun and the stars to track the passage of time. This practice, and particularly the use of stars, is disappearing rapidly: the availability of watches since c. 1970 means that there is now little technical reason to use the stars. The study records fast disappearing information on the ethnography of agricultural communities in northern Oman and, in particular, on the use of stars. It aims to identify the stars used and record the methods of stargazing in sufficient detail that the systems could be replicated if all local knowledge were lost. It also aims to raise awareness and improve the understanding of the significance of the traditional use of the stars in irrigated agriculture. This aspect of the cultural heritage of the region has not been written about previously in such detail. The research questions concern how, where and why stars are still used. There are several documents on falaj building and organisation in Oman, but relatively little on telling the time, and much less on the stars than on the use of the sun. The available documents were reviewed, but the main source for this study is data collected in the field, interviewing falaj managers and stargazers and watching the stars with them. Field work was carried out in different seasons since the stars used vary through the year. International experts were consulted on various aspects of the work, including Daniel Varisco on folk astronomy and Paul Kunitzsch on star names. The study focuses on five settlements where stars are used to this day. These are Qarya Beni Subh (Qarya), close to the mountains near the town of Al Hamra in the Interior Region; Al Fath, Zahib, Sudayra and Barzaman near the towns of Mudaybi and Sinaw in the Eastern Region. Additional information was obtained from a few other places for comparison, and during the course of the research it was found that only about eight of three thousand active falaj communities still use stars for time keeping. The methods of stargazing are given in detail, together with the names of the stars in Oman and their international classification where possible. It was found that the number of stars, the stars used, and their names in Oman vary from place to place. The time that each star represents is more variable than expected from the difference in length of night during the year. The stars used for falaj purposes are compared with those used in the region for navigation and with the stations of the moon of the Islamic calendar, but no evidence of any link between them was identified. On the basis of the history of falaj systems in Oman, the star names and the stars used, at least two of which are from the pre-Islamic Bedu tradition, it is concluded that the system of stargazing for timing water dates from pre-Islamic times, before the introduction of the stations of the moon. The main reason for the continued use of stars by a few communities, even though wristwatches are now widely available, is thought to be adherence to tradition both for its own sake and to avoid disputes over the sharing of water. It is considered unlikely that this ancient practice will survive more than 10 or 20 years unless the younger generation takes an interest in learning, and putting into practice, the traditions of their forefathers.

L’agriculture est à l’interface de plusieurs éléments du milieu naturel (eau, sol, climat,…) mais aussi de la société (économie, politique, démographie,…). Si durant des siècles elle a surtout été soumise au milieu naturel et à ses fluctuations (notamment climatiques), l’évolution des sociétés et surtout des techniques l’en ont en partie détachée, rendant les éléments sociaux et économiques premiers. Cette évolution est nette depuis le lendemain de la seconde guerre mondiale. Cependant, à l’heure où l’on parle de changement climatique, de réchauffement global, le climat et l’agriculture sont-ils déconnectés l’un de l’autre ? L’originalité de notre étude tient à sa localisation, un bassin versant déficitaire, au type d’agriculture présente (polyculture et forte part des cultures irriguées) et à la démarche scientifique qui l’accompagne. Celle-ci fait appel à différentes techniques : enquêtes, entretiens, analyses de données climatologiques, hydrologiques) qui seront étudiées à travers leur mise en relation à travers l'approche systémique. L'approche systémique nous permet de mettre en évidence les rapports existant entre les différents éléments concernés mais aussi de nous situer dans le temps. Notre étude prend en compte la place de la sécheresse dans l'évolution des pratiques agricoles ; l'inscription des modifications des pratiques agricoles peuvent inscrire des modifications dans le milieu support de leurs activités ; la modification de la relation à la ressource en fonction de l'adaptation des pratiques agricoles , et l'inscription des relations de pouvoir dans l'espace et le temps. / Farming is at the interface between several elements of the natural environment (water, soil and climate) and of society as well (economy, politics, demography, etc.). If, for centuries, it has been particularly subjected to the natural environment and its variations (mainly climatic), the evolution of societies and especially techniques have partly turned farming away from it, putting social and economic elements first. This evolution has been clear since the afterwards the Second World War. However, as climate change and global warming are being debated, are climate and farming disconnected from one another? The originality of this study is its location, a watershed deficit, its type of farming system (polyculture and the high proportion of irrigated crops) and the scientific process going with it. It uses different techniques such as surveys, interviews, analysis of climatic and hydrologic change), which will be studied through their links by a systems approach. Not only does this approach enable us to highlight the relationship between the elements involved but it also enables us to locate in time through a study of past episodes in order to outline a prospective study. Our study will therefore have to answer the following questions: what is the role of drought in the evolution of agricultural practices? How changes in agricultural practices may include changes in the leading place of their activities? How the relationship to water can be modified by the adaptation of agricultural practices? And how can it fit in the power relations and be located in space and time?

Uma das tecnologias mais adotadas pelos produtores, principalmente os que têm suas lavouras situadas em região de cerrado, é a irrigação. No entanto, ainda não existe consenso sobre o manejo dessa irrigação, principalmente, com relação à quantidade de água a aplicar e na freqüência da irrigação. Objetivou-se com este trabalho verificar a influência da irrigação por gotejamento quando manejada o ano inteiro, e quando submetida à suspensão ou repouso durante os meses de julho e agosto, nas características produtivas (produtividade e renda) e de crescimento (altura e diâmetros da copa e do caule) e na qualidade física e da bebida de café. Além disso, foram testados modelos matemáticos com a finalidade de identificar aquele que melhor descreve o desempenho das plantas. Não obstante, foi efetuado o balanço hídrico climatológico diário da cultura de café e alguns índices de eficiência de uso de água. O experimento foi delineado em blocos casualizados com quatro repetições e onze tratamentos, sendo esses compostos por plantas irrigadas o ano inteiro e plantas submetidas à suspensão da irrigação durante os meses de julho e agosto, além da testemunha que não foi irrigada. As lâminas de irrigação foram obtidas com base na porcentagem da evaporação da água do tanque classe A de 40%, 80%, 120%, 160% e 200%. A coleta de dados começou em julho de 2003 e se estendeu por três anos, finalizando em maio de 2006. Conclui-se que a renda e a qualidade da bebida de café não foram influenciadas pelos tratamentos; a suspensão da irrigação durante os meses de julho e agosto melhorou sobremaneira a qualidade física do café, porém, a produtividade foi drasticamente diminuída; dentre os tratamentos submetidos ao repouso, a utilização de 80% da evaporação da água do tanque classe A promoveu a melhor combinação entre qualidade física dos grãos e produtividade; A lâmina de irrigação de 80% da evaporação da água do tanque classe A, manejada durante todo o ano, promoveu a maior produtividade média e o maior índice de eficiência no uso da água; os modelos de regressão polinomial de terceiro e segundo graus e raiz quadrada, representaram de forma satisfatória o desempenho produtivo da cultura de café em função da quantidade de água aplicada, porém o primeiro apresentou maior coeficiente de correlação; os piores resultados para altura das plantas foram aqueles proporcionados pelos tratamentos Testemunha, 40% da ECA irrigado o ano inteiro, e 40% e 120% da ECA com suspensão da irrigação em julho e agosto; para o diâmetro da copa e do caule, os piores resultados foram proporcionados pelos tratamentos Testemunha e 40% da ECA irrigado o ano inteiro; a maior eficiência no uso da água de irrigação foi conseguida pela lâmina de 40% da ECA com suspensão em julho e agosto, porém, houve diminuição na produtividade em 38,3%; o armazenamento efetivo da água do solo para o tratamento Testemunha sofreu muita variação ao longo dos anos avaliados, permanecendo abaixo de 30% no mês de setembro; nos tratamentos com suspensão na irrigação, o armazenamento efetivo da água no solo ficou abaixo de 50% no mês de agosto, por outro lado, naqueles onde a irrigação foi realizada o ano todo o armazenamento permaneceu acima de 90%, com exceção do tratamento 40%, onde o armazenamento chegou a 75% em maio de 2006. / One of the most often adopted technologies by farmers, especially those who grow their crops in the savannas, is irrigation. However, there is no consensus about this irrigation management, mostly in relation to the water volume and irrigation frequency. This study analyzed the effect of drip irrigation managed throughout the year, and when subject to suspension or fallowing in the months of July and August, on the production (yield and recovery), on growth (height and canopy and stem diameters) characteristics and on coffee physical and beverage qualities. Moreover, mathematical models were tested to identify those that best describe plant performance. Daily coffee climatological hydric balance and some efficacy indices on water use were also calculated. The experimental design was randomized blocks with four repetitions and eleven treatments, which were composed by plants irrigated throughout the year, and plants subjected to irrigation suspension in the months of July and August, besides a non irrigated control. Water irrigation blades were obtained based on evaporation of the class A pan at 40%, 80%, 120%, 160% and 200%. Data collection started on July 2003 and extended for three years, ending on May 2006. It was concluded that recovery and coffee beverage quality were not affected by the treatments; suspending irrigation in July and August improved greatly coffee physical quality; however, yield decreased drastically; among the treatments subjected to fallowing, the one at 80% evaporation of class A pan, gave the best combination between cherry physical quality and yield; the irrigation blade of 80% evaporation of class A pan, managed throughout the year, gave the best average yield and the greatest water use efficacy index; the polynomial regression model of third and second degrees and the square root, represented well the yield performance of coffee as a function of water amount applied; however, the first one presented a greater correlation coefficient; the worst results of plant height were those given by the treatments non irrigated control, 40% ECA irrigated throughout the year and 40% and 120% ECA with irrigation fallowing in July and August; the worst results for canopy and stem diameters were given by the treatments non irrigated control and 40% ECA irrigated throughout the year; the greatest irrigation water use efficacy was obtained with the blade of 40% ECA with fallowing in July and August; however, there was a 38.3% decrease in yield; effective water holding in the soil for the non irrigated control varied greatly throughout the evaluation years, remaining below 30% in September; in the treatments with irrigation fallowing, effective water holding remained below 50 in August, in contrast, in those with irrigation throughout the year, water holding remained above 90% with the exception of the treatment with 40% ECA, where water holding reached 75% in May 2006.

Nos últimos anos, cada vez mais a participação social é um fator preponderante para a consolidação da democracia e o desenvolvimento da cidadania. Com a participação da sociedade civil surgem conflitos diante de uma cultura política centralizadora, tanto nas decisões, como na manutenção do poder por grupos dominantes dos recursos políticos, econômicos e culturais, onde o consenso e as consequências das políticas públicas em relação à governança da água afetam a sociedade civil. Fatos recentes, que envolve a crise hídrica na Macrometrópole Paulista (MMP), denunciam a escassez e revelam a atual e real gestão em relação à água. Indispensável à sobrevivência humana, tal contexto desencadeou novas articulações entre governo, instituições e sociedade. Neste cenário, a luta pela questão ambiental passou a ocupar arenas antes não ocupadas. A participação da sociedade civil na gestão da água desvenda vários conflitos ao envolver diferentes atores diante da desigualdade e das condições de negociação. Neste sentido, tais conflitos desencadeiam arranjos entre os atores sociais que procuram influenciar o processo decisório institucional, apesar de tal análise focar a sociedade civil externa à institucionalidade estabelecida. A presente Tese buscou analisar a atuação da sociedade civil frente à crise hídrica na MMP, ou seja, foca a sociedade civil e seus atores na busca de soluções para enfrentar a crise e propor soluções diante do problema apresentado. Ao enriquecer a reflexão sobre os caminhos alternativos, com a participação da sociedade civil, busca propostas diante da escassez hídrica, uma vez que a crise atual não se refere apenas ao abastecimento, mas também ao modelo de gestão e de efetividade da governança. Utilizou como fundamentos de análise, tanto a escola europeia, como a americana, de teorias dos movimentos sociais. A pesquisa qualitativa, de caráter interdisciplinar, envolveu o desenho da uma cronologia da crise e conta com o estudo de caso, a partir de entrevistas e o acompanhamento dos processos de participação da sociedade civil e seus atores. / In recent years, more and more social participation is a major factor for the consolidation of democracy and the development of citizenship. With the participation of civil society conflict arise before a coordinating political culture, both in decisions such as the maintenance of power by dominant groups of the political, economic and cultural resources, where the consensus and the consequences of public policies in relation to the governance of water affect civil society. Recent events involving the water crisis on macro-metropolis of São Paulo (MMP), denounce the scarcity and reveal the real and current water management. Essential for human survival, this context has unleashed new joints between Government, institutions and society. In this scenario, the struggle for environmental issue occupied arenas before not occupied. The participation of civil society in water management unveils several conflicts involving different actors on inequality and trading conditions. In this sense, such conflicts trigger arrangements between the social actors who seek to influence the institutional decision-making process, although such analysis focus on civil society outside established institutions. The present Thesis sought to analyze the performance of civil society vis-à-vis the water crisis in the MMP, namely, focuses on civil society and its actors in the search for solutions to address the crisis and propose solutions before the problem presented. To enrich the reflection on the alternate routes, with the participation of civil society, seeking proposals on the water shortage, since the current crisis does not refer only to the supply, but also the management and effectiveness of governance. Used as a basis for analysis, both the European school, as the American theories of social movements. The qualitative research, interdisciplinary character, involved the design of a chronology of the crisis and the case study, from interviews and monitoring of the processes of participation of civil society and its actors.

Os jogos de papéis (role-playing games) têm sido utilizados em diversos projetos de gestão participativa dos recursos naturais em processos de formação, pesquisa e intervenção de apoio à negociação de conflitos em várias partes do mundo. Uma série de estudos demonstram o potencial destas metodologias para lidar com temas complexos num processo de Educação para a participação, principalmente de atores locais da sociedade civil. Partimos do pressuposto de que os fóruns de negociação de conflitos socioambientais exigem um aprendizado técnico e social para uma participação efetiva da sociedade civil. O objetivo da pesquisa consiste em analisar os potenciais e limites destas metodologias em relação aos princípios da Educação Ambiental. Primeiramente realizamos um levantamento e comparação de experiências brasieliras de formação relacionadas à gestão urbana e ambiental. Em seguida, analisamos de forma mais aprofundada um protótipo de jogo de papéis, com enfoque na modelagem de acompanhamento, que corresponde ao foco do trabalho - O Jogo dos Mananciais. O jogo em destaque trata da problemática da gestão dos recursos hídricos em áreas de mananciais peri-urbanos. Os resultados da análise mostram que o jogo apresenta diversas potencialidades como metodologia de apoio à formação, embora seus limites estejam relacionados à complexidade da ferramenta e ao tempo dispendido na sua elaboração. Além disso, como uma metodologia didática, o jogo de papéis (RPG) deve estar inserido num processo de formação mais amplo. / Role playing games in natural resources management have recently been tested as training, research and intervention tools all over the world. Various studies point out their potential to deal with complex issues and to contribute on the training processes. We believe that a social learning process is necessary to empower the local communities to take part on the negotiation channels. The objective of this contribution is to briefly analyze the limits and potential of games within environmental education from the critical perspective. The analysis begins by a comparison of four Brazilian experiences, which are \"regular\" RPGs, developed to deal with the complexity of urban and environmental management. They were used within an educational process focusing on either local communities or technicians. The comparison of these experiences is based on (i) an analysis of the materials (game support) provided by the developers, (ii) interviews with authors and game developers and (iii) participation in game sessions whenever possible. Then we deeply analyze the RPG (Jogo dos Mananciais), the research focus. This game is a prototype based on Companion Modeling Approach. It deals with the water resources management in peri-urban catchments. The results show role-playing games have many possibilities as a training methodology, however their limits are related to the complexity of the toll. So, the RPG must be inserted into a wider educational process.

Evaluating trends of historical rainfall on a weekly and seasonal basis is needed for optimizing the design and implementation of lawn water conservation strategies like outdoor water restrictions. While “day of the week” water restrictions are a typical strategy to limit the frequency and duration of urban lawn water use, they may not necessarily result in more conservative behaviors from end-users. Because weekly rainfall and local climate variables are seldom taken into account in water restriction strategies, they are not connected to actual lawn water demand. However, since lawn water demand is directly related to weekly rainfall totals, not to a particular number of watering days per week, water restriction schedules have the potential to unintentionally promote overwatering. This study investigated the weekly patterns of average seasonal rainfall and evapotranspiration in South Florida to determine the typical variability of weekly net irrigation needs and found that typical wet season weekly rainfall often provides a significant amount of water to meet the demand of residential lawns and landscapes. This finding underscores opportunity to reduce supplemental overwatering in residential landscapes if watering guidelines were modified to recognize seasonal average weekly rainfall in this region This study also tested a rainfall-based water conservation strategy to determine if providing residents with information about how local rainfall could promote more effective lawn watering behavior than just water restrictions alone. Experimental households reduced lawn water use by up to 61% compared to the control group by the end of the study. These results demonstrate that the neighborhood “rain-watered lawn” signs helped experimental study group households become more aware of rainfall as the primary input of water to their lawns. This study also investigated the role that lawn irrigation from self-supplied sources plays in the urban lawn water demand and investigates how the lawn water use and lawn watering behaviors of households that source from self-supply differ from those who source from the public supply. / Includes bibliography. / Dissertation (Ph.D.)--Florida Atlantic University, 2016. / FAU Electronic Theses and Dissertations Collection

A renovação da outorga que permite reverter as águas das bacias dos rios Piracicaba, Capivari e Jundiaí (PCJ) para abastecer a Região Metropolitana de São Paulo através do Sistema Cantareira constituiu um importante momento de decisão sobre a gestão dos recursos hídricos. Diante disso e do processo de descentralização na gestão das águas, possibilitando a ação de diversos atores, com a instituição do Sistema Integrado de Gerenciamento de Recursos Hídricos em São Paulo (SIGRH), existe a necessidade de conciliação de interesses, de cooperação entre os atores e de negociação de conflitos. Este trabalho pretendeu analisar como a existência de um histórico de cooperação entre os membros dos Comitês das Bacias PCJ contribuiu para o fortalecimento da sua capacidade de negociação no processo de renovação da outorga do Sistema Cantareira. Para tanto, a pesquisa contou com a aplicação de um questionário fechado junto aos membros dos Comitês PCJ, que permitiu observar a existência de cooperação entre eles e de outros elementos que constituem o conceito de capital social. Percebeu-se que os Comitês PCJ possuem uma estrutura de organização que possibilita um desempenho satisfatório na tomada de decisões, na mobilização de recursos, na facilidade de comunicação e na solução de conflitos. Verificou-se que entre os seus membros existem relações consistentes de cooperação, confiança, solidariedade e reciprocidade, através das quais foram construídos arranjos institucionais nesses Comitês para resolver problemas relacionados à gestão dos recursos hídricos, como foi o caso da renovação da outorga do Sistema Cantareira. Com a nova outorga, a operação do Sistema passou a ser descentralizada e transparente. Todo esse processo contribuiu para que o capital social existente entre os atores envolvidos na gestão das águas se desenvolvesse e fortalecesse os seus laços. Também contribuiu para o amadurecimento técnico e político dos Comitês PCJ, para sua capacidade de negociar o recurso comum e para a institucionalização do SIGRH na busca pela gestão compartilhada das águas. / The renovation of the water permit that makes possible the reversion of water from the Piracicaba, Capivari and Jundiaí (PCJ) river basin to supply the Sao Paulo Metropolitan Region, through Cantareira System, consisted of an important decision making moment on the water management. With regard to that and to the decentralization process on water management, that enables the participation of several actors with the Integrated Water Management (IWM) in Sao Paulo, the conciliation of interests, cooperation among actors and conflict negotiation have become necessary. This research aimed to analyze how the existence of cooperation among the members of the PCJ River basin Committee contributed to strengthen their negotiation capacity during the process of renovation of the Cantareira System water permit. A questionnaire, applied to the members, enabled the observation of cooperation and other elements that constitute the concept of social capital among them. It was possible to observe that the PCJ Committee has an organization structure that enables a satisfactory performance on the decision making process, resource mobilization, communication and conflict resolution. It was also observed that among them there are consistent cooperation, trust, solidarity and reciprocity relations, through which institutional arrangements were built to solve problems related to the water management. With the new water permit, the System operation has become more decentralized and transparent. All the process contributed to develop and strengthen the existent social capital and ties among the actors. It also contributed to the technical and political maturity of PCJ Committee, to its capacity of negotiating the common resource and to the institutionalization of IWM in the search for an integrated water management.