{"id":6440,"date":"2026-07-03T10:28:01","date_gmt":"2026-07-03T13:28:01","guid":{"rendered":"https:\/\/rwtv.com.br\/altovale\/?p=6440"},"modified":"2026-07-03T10:28:01","modified_gmt":"2026-07-03T13:28:01","slug":"enchente-de-1927-marcou-a-historia-de-santa-catarina-e-deu-inicio-ao-debate-sobre-barragens-no-vale-do-itajai","status":"publish","type":"post","link":"https:\/\/rwtv.com.br\/altovale\/enchente-de-1927-marcou-a-historia-de-santa-catarina-e-deu-inicio-ao-debate-sobre-barragens-no-vale-do-itajai\/","title":{"rendered":"Enchente de 1927 marcou a hist\u00f3ria de Santa Catarina e deu in\u00edcio ao debate sobre barragens no Vale do Itaja\u00ed"},"content":{"rendered":"<p class=\"isSelectedEnd\">As enchentes fazem parte da hist\u00f3ria do Vale do Itaja\u00ed desde a coloniza\u00e7\u00e3o da regi\u00e3o. De acordo com estudos hist\u00f3ricos, fatores naturais da bacia hidrogr\u00e1fica, aliados \u00e0 ocupa\u00e7\u00e3o urbana desordenada ao longo das d\u00e9cadas, contribu\u00edram para transformar as cheias em um dos maiores desafios enfrentados pelos munic\u00edpios do vale.<\/p>\n<p class=\"isSelectedEnd\">O relevo da regi\u00e3o faz com que as \u00e1guas escoem rapidamente no alto curso dos rios, mas encontrem baixa declividade a partir de Blumenau, reduzindo a velocidade do fluxo e favorecendo o transbordamento do Rio Itaja\u00ed-A\u00e7u e de seus afluentes.<\/p>\n<p class=\"isSelectedEnd\">Entre 1850 e 2002, foram registradas 66 grandes enchentes em Blumenau. Desse total, 11 ocorreram at\u00e9 1900, outras 20 entre 1901 e 1950 e mais 38 nos 50 anos seguintes, demonstrando que os eventos extremos se tornaram cada vez mais frequentes.<\/p>\n<p class=\"isSelectedEnd\">A cada grande enchente, surgiam novas discuss\u00f5es sobre solu\u00e7\u00f5es para reduzir os impactos das cheias. Ap\u00f3s as inunda\u00e7\u00f5es de 1880 e 1911, os debates se intensificaram, mas foi a hist\u00f3rica enchente de 1927 que marcou definitivamente o planejamento de obras de prote\u00e7\u00e3o para a regi\u00e3o.<\/p>\n<p class=\"isSelectedEnd\">Na \u00e9poca, especialistas discutiram duas alternativas: construir barragens para reter parte da \u00e1gua ou realizar obras para acelerar o escoamento do Rio Itaja\u00ed. O relat\u00f3rio do engenheiro Emil Odebrecht concluiu que a constru\u00e7\u00e3o de barragens n\u00e3o seria a melhor solu\u00e7\u00e3o naquele momento e recomendou interven\u00e7\u00f5es para encurtar o percurso do rio por meio de cortes em seus meandros.<\/p>\n<p class=\"isSelectedEnd\">Entretanto, novas enchentes continuaram castigando o Vale do Itaja\u00ed. O evento de 1957, quando o rio atingiu 13,07 metros, mudou novamente o rumo das discuss\u00f5es. O ent\u00e3o Departamento Nacional de Obras e Saneamento (DNOS) elaborou um plano de prote\u00e7\u00e3o contra enchentes que previa a constru\u00e7\u00e3o de tr\u00eas grandes barragens de conten\u00e7\u00e3o.<\/p>\n<p class=\"isSelectedEnd\">Foi desse planejamento que nasceram as barragens de Tai\u00f3 (1973), Ituporanga (1976) e Jos\u00e9 Boiteux (1992), estruturas que at\u00e9 hoje desempenham papel estrat\u00e9gico no controle das cheias do Vale do Itaja\u00ed.<\/p>\n<p class=\"isSelectedEnd\">Mesmo ap\u00f3s a implanta\u00e7\u00e3o das barragens, grandes enchentes continuaram ocorrendo, como as de <strong>1983, 1984, 2008 e 2011<\/strong>, levando especialistas a concluir que apenas obras estruturais n\u00e3o seriam suficientes. A partir da d\u00e9cada de 1980, passaram a ganhar for\u00e7a a\u00e7\u00f5es voltadas ao planejamento urbano, monitoramento hidrol\u00f3gico, fortalecimento da Defesa Civil e educa\u00e7\u00e3o da popula\u00e7\u00e3o para conviv\u00eancia com os eventos extremos.<\/p>\n<p class=\"isSelectedEnd\">Segundo pesquisadores, a combina\u00e7\u00e3o entre caracter\u00edsticas naturais da bacia, urbaniza\u00e7\u00e3o acelerada, impermeabiliza\u00e7\u00e3o do solo e ocupa\u00e7\u00e3o de \u00e1reas sujeitas a inunda\u00e7\u00f5es continua sendo um dos principais fatores que explicam a recorr\u00eancia das enchentes no Vale do Itaja\u00ed.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Fonte:<\/strong> KREUTZFELD, Jonathan. <em>O Ribeir\u00e3o da Velha (Blumenau, SC): A Ocorr\u00eancia de Eventos Hidrol\u00f3gicos e a Urbaniza\u00e7\u00e3o<\/em>. Disserta\u00e7\u00e3o de Mestrado. MPPT\/UDESC. Florian\u00f3polis, 2012.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>As enchentes fazem parte da hist\u00f3ria do Vale do Itaja\u00ed desde a coloniza\u00e7\u00e3o da regi\u00e3o. De acordo com estudos hist\u00f3ricos, fatores naturais da bacia hidrogr\u00e1fica, aliados \u00e0 ocupa\u00e7\u00e3o urbana desordenada ao longo das d\u00e9cadas, contribu\u00edram para transformar as cheias em um dos maiores desafios enfrentados pelos munic\u00edpios do vale. O relevo da regi\u00e3o faz com [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":6441,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15,66],"tags":[],"class_list":["post-6440","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-destaques","category-santa-catarina"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Enchente de 1927 marcou a hist\u00f3ria de Santa Catarina e deu in\u00edcio ao debate sobre barragens no Vale do Itaja\u00ed &#187; RWTV - Alto Vale<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/rwtv.com.br\/altovale\/enchente-de-1927-marcou-a-historia-de-santa-catarina-e-deu-inicio-ao-debate-sobre-barragens-no-vale-do-itajai\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Enchente de 1927 marcou a hist\u00f3ria de Santa Catarina e deu in\u00edcio ao debate sobre barragens no Vale do Itaja\u00ed &#187; RWTV - Alto Vale\" \/>\n<meta property=\"og:description\" content=\"As enchentes fazem parte da hist\u00f3ria do Vale do Itaja\u00ed desde a coloniza\u00e7\u00e3o da regi\u00e3o. De acordo com estudos hist\u00f3ricos, fatores naturais da bacia hidrogr\u00e1fica, aliados \u00e0 ocupa\u00e7\u00e3o urbana desordenada ao longo das d\u00e9cadas, contribu\u00edram para transformar as cheias em um dos maiores desafios enfrentados pelos munic\u00edpios do vale. 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