The water quality is related to the hydrologic and limnologic properties of ground and surface water, and significant efforts have been made to monitor water sources to understand the effects of land use changes in agricultural areas, with significant socioeconomic activities. The objective of this study was to evaluate the qualitative aspects of surface water in subbasins related to land use. Samples were analyzed in terms of physical and chemical parameters on monthly discrete water quality sampling in four representative sites at first order subbasin streams, located at the Polo Regional Centro Norte, Pindorama County, State of São Paulo, Brazil. The land use classification was made by visual detection technique in a multispectral satellite data obtained from LandSat8-spectral bands of the OLI sensor. The watershed was classified into major land cover/use classes and overlay maps generated in ArcGIS 10 indicated a significant shift from natural vegetation to agriculture activities. Water quality monitoring was according to the brazilian protocol and the results were submitted to analysis of variance (ANOVA). The values obtained differ significantly at each sampling point -subbasins, reflecting the effects of land use on water quality. Soil conservation management is important to optimize soil use in order to contribute to the control of water pollution and the formulation of a public policy is necessary for the conservation of water and soil resources.Keywords: soil management, agroecosystems, land use policy. Efeito do uso do solo em sub-bacias na qualidade da água: um estudo de caso na Bacia do Córrego da Olaria, Estado de São Paulo, Brasil ResumoA qualidade da água está relacionada com as propriedades hidrológicas e limnológicas das águas subterrâneas e superficiais, e esforços significativos devem ser realizados para monitorar as nascentes no intuito de compreender os efeitos das mudanças no uso da terra em áreas agrícolas, com atividades socioeconômicas significativas. O objetivo deste estudo foi avaliar os aspectos qualitativos das águas superficiais de bacias hidrográficas e correlacionar com o uso do solo. As amostras foram analisadas em termos dos parâmetros físicos e químicos na amostragem mensal discreta da qualidade da água, em quatro locais representativos de nascentes em microbacias de primeira ordem, localizadas no Polo Regional Centro Norte, Pindorama, Estado de São Paulo, Brasil. A classificação do uso do solo foi feita por técnica de detecção visual em uma imagem multiespectral de satélite LandSat8-bandas espectrais, sensor OLI. O uso do solo foi classificado nas principais classes de uso e os mapas de sobreposição gerados no ArcGIS 10 indicaram uma mudança significativa da vegetação natural para as atividades agrícolas. O monitoramento da qualidade da água

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The assessment of water availability in river basins is at the top of the water security agenda. Historically, the assessment of stream flow discharge in Brazilian watersheds was relevant for dam dimensioning, flood control projects and irrigation systems. Nowadays, it plays an important role in the creation of sustainable management plans at the catchment scale aimed to help in establishing legal policies on water resources management and water security laws, namely, those related to the payment for environmental services related to clean water production. Headwater catchments are preferential targets of these policies and laws for their water quality. The general objective of this study was to evaluate water availability in first-order sub-basins of a Brazilian headwater catchment. The specific objectives were: (1) to assess the stream flow discharge of first-order headwater sub-basins and rank them accordingly; (2) to analyze the feasibility of payment for environmental services related to water production in these sub-basins. The discharge flow measurements were conducted during five years (2012 to 2016), in headwaters in a watershed on the São Domingos River at the Turvo/Grande Watershed, represented as the 4th-largest hydrographic unit for water resources management—UGRHI-15 in São Paulo State, Brazil. A doppler velocity technology was used to remotely measure open-channel flow and to collect the data. The discharge values were obtained on periodic measurements, at the beginning of each month. The results were subject to descriptive statistics that analyzed the temporal and spatial data related to sub-basins morphometric characteristics. The discharge flows showed space–time variations in magnitude between studied headwater sub-basins on water availability, assessed based on average net discharges. The set of ecological processes supported by forests are fundamental in controlling and recharging aquifers and preserving the volume of water in headwater in each sub-basin. The upstream inflows influence downstream sub-basins. To avoid scarcity, the headwater rivers located in the upstream sub-basins must not consider basin area as a single and homogeneous unit, because that may be the source of water conflicts. Understanding this relationship in response to conservationist practices installed uphill influenced by anthropic actions is crucial for water security assessment. The headwaters should be considered a great potential for ecosystem services, with respect to the “provider-receiver” principle, in the context of payments for environmental services (PES).

RESUMO WATER QUALITY MONITORING: SUPPORT FOR ENVIRONMENTAL MANAGEMENT IN THE WATERSHED OF THE STREAM POTTERY ABSTRACTMonitoring is one of the management tools established the National Water Resources Policy, with a view to the classification of water bodies into classes according to their multiple uses. The objectives of this study were to evaluate the qualitative aspects of water bodies on the classification of the Water Quality Index -AQI and its framework in accordance with Resolution CONAMA 357/2005, related to the land use of the micro basin of Pottery stream. The experiment was carried out from 1 October 1 Engenheiro Agrônomo, Dr., Pesquisador Científico VI na APTA -Polo Regional Centro Norte.

Maria Conceição Lopes 3 RESUMOQuando nos referimos à temática do planejamento ambiental, uma das formas de estudos constitui em pesquisas aplicadas em bacias hidrográficas para instituir o plano de gestão ambiental em microbacias. Estudos comprovam que é fundamental o manejo e a manutenção dos recursos hídricos para garantia de sua disponibilidade, e que o monitoramento da vazão de um curso de água é importante e indispensável para quantificar o volume de água em uma determinada bacia. Nesse contexto os objetivos deste trabalho são: avaliar os dados quantitativos da vazão na microbacia do Córrego da Olaria, Pindorama -SP, e utilizar o monitoramento da vazão como subsídio no plano de gestão dos recursos hídricos. Realizou-se o monitoramento mensal da vazão com uso de linígrafo (Teledyne Isco -2150) nos quatro pontos principais de contribuição na microbacia. Os resultados foram submetidos à análise estatística, avaliando a vazão e a interação com as nascentes e a época (seca ou chuvosa), e realizou-se gráficos temporais da vazão correlacionando-os com dados pluviométricos. Os dados obtidos permitem concluir que as nascentes em mata nativa apresentam maior vazão, enquanto que a nascente em área de mata não consolidada a menor vazão. O monitoramento da vazão demonstra ser uma importante ferramenta para elaboração no plano de gestão ambiental em bacia hidrográfica. PALAVRAS-CHAVE:Vazão. Gestão dos Recursos Hídricos. Uso do Solo. MONITORING THE FLOW AS A TOOL FOR THE PLAN OF ENVIRONMENTAL MANAGEMENT IN RIVER BASINS ABSTRACTWhen we refer to the theme of environmental planning, one way of studies is in applied research in river basins to institute the environmental management plan in watersheds. Studies show that it is essential the management and maintenance of water resources to guarantee their availability, and monitoring the flow of a stream is important and necessary to quantify the volume of water in a particular basin. In this context the objectives of this study are to evaluate the quantity of data flow in the watershed Pottery Stream, Pindorama -SP, use and monitoring the flow as an aid in the management plan of water resources. Held monthly monitoring the flow with the use of linígrafo 1 Tecnóloga em Agronegócio, Mestranda em Agronomia, Programa Ciência do Solo na FCAV-UNESP.