| Summary: | <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <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:Compatibility> <w:BreakWrappedTables /> <w:SnapToGridInCell /> <w:WrapTextWithPunct /> <w:UseAsianBreakRules /> <w:DontGrowAutofit /> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> </w:WordDocument> </xml><![endif]--><!--[if gte mso 9]><xml> <w:LatentStyles DefLockedState="false" LatentStyleCount="156"> </w:LatentStyles> </xml><![endif]--> <!-- /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-parent:""; margin:0cm; margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:12.0pt; font-family:"Times New Roman"; mso-fareast-font-family:"Times New Roman";} @page Section1 {size:595.3pt 841.9pt; margin:70.85pt 3.0cm 70.85pt 3.0cm; mso-header-margin:35.4pt; mso-footer-margin:35.4pt; mso-paper-source:0;} div.Section1 {page:Section1;} --> <!--[if gte mso 10]> <style> /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Tabela normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} </style> <![endif]--> <p class="MsoNormal" style="text-align: justify;">In water management projects, mainly those related to water accumulation or conduction, the knowledge of expected precipitations for the different conditions is fundamental. The objective of this research was to determine the expected maxima precipitation for different Times of Return (TR), for the Central and Southeast regions of the Goiás State, Brazil. Daily precipitation data of 36 rain gages were used, obtained from the Brazilian National Water Agency (ANA) database, organized in an electronic worksheet and treated by the Kimball methodology for TR determination. The results indicated that differences between extreme values of maxima precipitations, for the same TR, exceeded 50% the lower precipitation values. This study also showed that the Northwest and Southeast regions of the studied area present large precipitation values, and the Central and East regions present lower values. These results emphasize the need for adoption of local values for planning hydraulic projects.</p> <p class="MsoNormal" style="text-align: justify;"> </p> <p class="MsoNormal" style="text-align: justify;">KEY-WORDS: Rain; hidrology; return period.</p><br><!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <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:Compatibility> <w:BreakWrappedTables /> <w:SnapToGridInCell /> <w:WrapTextWithPunct /> <w:UseAsianBreakRules /> <w:DontGrowAutofit /> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> </w:WordDocument> </xml><![endif]--><!--[if gte mso 9]><xml> <w:LatentStyles DefLockedState="false" LatentStyleCount="156"> </w:LatentStyles> </xml><![endif]--> <!-- /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-parent:""; margin:0cm; margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:12.0pt; font-family:"Times New Roman"; mso-fareast-font-family:"Times New Roman";} @page Section1 {size:595.3pt 841.9pt; margin:70.85pt 3.0cm 70.85pt 3.0cm; mso-header-margin:35.4pt; mso-footer-margin:35.4pt; mso-paper-source:0;} div.Section1 {page:Section1;} --> <!--[if gte mso 10]> <style> /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Tabela normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} </style> <![endif]--> <p class="MsoNormal" style="text-align: justify;">Em projetos hidroagrícolas, principalmente aqueles relacionados à acumulação ou condução de água, é fundamental o conhecimento das precipitações esperadas para as diferentes condições. Neste sentido, este trabalho teve por objetivo a determinação da precipitação máxima esperada, para diferentes períodos de retorno (TR), para as regiões central e sudeste do Estado de Goiás. Foram utilizados dados diários de precipitação de 36 estações pluviométricas. Os dados foram obtidos a partir da base de dados da Agência Nacional de Águas (ANA), sendo organizados em planilha eletrônica e tratados com base na metodologia de Kimball, para a determinação do TR. Os resultados indicaram que as diferenças entre os valores extremos de precipitações máximas, para um mesmo TR, ultrapassaram, em 50%, a menor precipitação e que as regiões noroeste e sudeste da área estudada apresentam valores de precipitação esperados maiores, enquanto, nas regiões central e leste, os valores mostraram-se menores. Estes resultados enfatizam a necessidade de adoção de valores locais para o planejamento de obras hidráulicas.</p> <p class="MsoNormal" style="text-align: justify;"> </p> <p class="MsoNormal" style="text-align: justify;">PALAVRAS-CHAVE: Chuva; hidrologia; período de retorno.</p>
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