DÉFICIT NA DRENAGEM URBANA: BUSCANDO O ENTENDIMENTO E CONTRIBUINDO PARA A DEFINIÇÃO

• Main Authors: Vladimir Caramori Borges de Souza, Luiz Roberto Santos Moraes, Patrícia Campos Borja
• Format: Article
• Language: English
• Published: UFBA 2013-11-01
• Series: Revista Eletrônica de Gestão e Tecnologias Ambientais
• Online Access: https://portalseer.ufba.br/index.php/gesta/article/view/7213

<!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves /> <w:TrackFormatting /> <w:HyphenationZone>21</w:HyphenationZone> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF /> <w:LidThemeOther>PT-BR</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables /> <w:SnapToGridInCell /> <w:WrapTextWithPunct /> <w:UseAsianBreakRules /> <w:DontGrowAutofit /> <w:SplitPgBreakAndParaMark /> <w:DontVertAlignCellWithSp /> <w:DontBreakConstrainedForcedTables /> <w:DontVertAlignInTxbx /> <w:Word11KerningPairs /> <w:CachedColBalance /> </w:Compatibility> <m:mathPr> <m:mathFont m:val="Cambria Math" /> <m:brkBin m:val="before" /> <m:brkBinSub m:val="--" /> <m:smallFrac m:val="off" /> <m:dispDef /> <m:lMargin m:val="0" /> <m:rMargin m:val="0" /> <m:defJc m:val="centerGroup" /> <m:wrapIndent m:val="1440" /> <m:intLim m:val="subSup" /> <m:naryLim m:val="undOvr" /> </m:mathPr></w:WordDocument> </xml><![endif]--> <p class="MsoNormal" style="text-align: justify;"><span style="font-size: 12.0pt; line-height: 115%; font-family: ";Times New Roman";,";serif";;">A abordagem tradicional brasileira na drenagem urbana indica que os corpos d’água devem ser saneados e, nesse aspecto, sanear tem sido entendido como drenar, no sentido de criar estruturas de micro e macrodrenagem para conduzir a água para os pontos mais distantes possíveis. Em uma visão moderna, o sistema de drenagem deve ser tratado como um dos componentes do espaço urbano, sendo impossível dissociá-lo da infraestrutura das cidades. Para avaliar esses sistemas, os indicadores tradicionais (tais como aqueles baseados em cobertura de rede ou atendimento <em style="mso-bidi-font-style: normal;">per capita</em>) não são capazes de retratar sua condição (eficiência ou déficit). Esse artigo busca definir o conceito de déficit em drenagem e manejo de águas pluviais urbanas, tentando estabelecer as relações entre o conceito em si, as noções de risco utilizadas em dimensionamento de redes, a cobertura do sistema, as tecnologias para drenagem das águas pluviais, a informação disponível, o estado (de degradação) dos corpos d’água e as estruturas técnico-institucionais. Observa-se que a definição conceitual de déficit relacionado às águas pluviais é complexa e se relaciona a vários aspectos da infraestrutura e da política urbanas, não podendo estar restrito à cobertura de rede.</span></p> <!--[if gte mso 9]><xml> <w:LatentStyles DefLockedState="false" DefUnhideWhenUsed="true" DefSemiHidden="true" DefQFormat="false" DefPriority="99" LatentStyleCount="267"> <w:LsdException Locked="false" Priority="0" SemiHidden="false" UnhideWhenUsed="false" QFormat="true" Name="Normal" /> <w:LsdException Locked="false" Priority="9" SemiHidden="false" UnhideWhenUsed="false" QFormat="true" Name="heading 1" /> <w:LsdException Locked="false" Priority="9" QFormat="true" Name="heading 2" /> <w:LsdException Locked="false" Priority="9" QFormat="true" Name="heading 3" /> <w:LsdException Locked="false" Priority="9" QFormat="true" Name="heading 4" /> <w:LsdException Locked="false" Priority="9" QFormat="true" Name="heading 5" /> <w:LsdException Locked="false" Priority="9" 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