{"id":223,"date":"2005-09-12T01:34:25","date_gmt":"2005-09-11T23:34:25","guid":{"rendered":"https:\/\/www.sabado100.com.ar\/?p=223"},"modified":"2005-09-12T01:34:25","modified_gmt":"2005-09-11T23:34:25","slug":"conservacion-y-manejo-del-agua-en-el-norte","status":"publish","type":"post","link":"https:\/\/sabado100.com.ar\/es-ar\/conservacion-y-manejo-del-agua-en-el-norte\/","title":{"rendered":"Conservaci\u00f3n y \u201cmanejo\u201d del agua en el norte"},"content":{"rendered":"<p>Teniendo en cuenta que una extensa regi\u00f3n de Santiago del Estero, Norte de Santa Fe, Chaco y Formosa carecen de agua dulce a grandes profundidades, como lo prueban centenares de perforaciones de hasta m\u00e1s de 1.000 metros, se debe recurrir obligatoriamente a la primera \u201ccapa\u201d de tan vital elemento.<br \/>\n                                     Los sedimentos constitutivos del agua fre\u00e1tica en la mayor\u00eda de esos lugares son preponderantemente loessicos, en unos pocos areno-loessicos, pero existiendo en casi todos los casos estratos arcillo-loessicos y\/o loessicos-calc\u00e1reos que delimitan el piso del fre\u00e1tico en profundidad, siendo adem\u00e1s componentes del mismo.<br \/>\n            Al darse condiciones est\u00e1ticas (cuando no llueve ni se extrae  agua, es decir sin recarga ni drenaje), los pocos lentejones de agua dulce existentes \u201cflotan\u201d sobre el agua salada, form\u00e1ndose una lente de \u201cGhyben-Hesberg\u201d, cuya interfase en los lugares estudiados no es mayor de unos pocos metros en su parte central.<br \/>\n            Debe tenerse en cuenta como important\u00edsimo que las condiciones locales y actuales del bols\u00f3n de mejor calidad relativa se modificar\u00e1 de acuerdo al \u201cmanejo\u201d que se haga del agua.<br \/>\n             El sistema de equilibrio agua dulce-salada se altera cuando el r\u00e9gimen de estracci\u00f3n es mayor que la reposici\u00f3n, se rompe el equilibrio, produci\u00e9ndose un cono de depresi\u00f3n \u201cparado\u201d cuyo interior est\u00e1 ocupado por agua salada y que al alcanzar el fondo del pozo lo contamina.<br \/>\n              Por eso muchos pobladores y paisanos de la zona \u201cdescubrieron\u201d sin ning\u00fan estudio que el mayor di\u00e1metro de los pozos no solo aumenta el caudal sino que posibilita obtener agua de mejor calidad al minimizar la depresi\u00f3n del acu\u00edfero (y mantener por consiguiente el equilibrio de la interfase).<br \/>\n               Para mejorar  la calidad del agua en las zonas que se explotar\u00e1n, es necesario conocer la forma y potencia del \u201cbols\u00f3n\u201d de agua dulce  existente sino que tambi\u00e9n es imprescindible aumentar la infiltraci\u00f3n del agua de lluvia en esos lugares.<br \/>\n       El dise\u00f1o de las represas a construir (largo, ancho, profundidad), depender\u00e1 de la forma del bols\u00f3n de agua dulce existente,teniendo como misi\u00f3n \u201cfrenar\u201d la intrusi\u00f3n del agua salada.                                                                             Como un criterio general se puede decir que los pozos o trincheras de explotaci\u00f3n se los debe \u201ctrabajar\u201d d\u00e1ndoles la menor profundidad  posible para mejorar en calidad. Una vez que las obras de mejoramiento de la zona apta trabaje 2 o 3 temporadas de lluvia completa, se los podr\u00e1 ir ahondando paulatinamente.<br \/>\n         De esta manera se ayudar\u00e1 a conservar y mejorar la escasa agua apta existente sin la cual no es posible la vida humana o de los animales.<\/p>\n<p>Daniel Pustilnik, Lic.en Recursos Naturales, reside en Icho Cruz (C\u00f3rdoba)<br \/>\n Geocom@dcc.com.ar<\/p>\n","protected":false},"excerpt":{"rendered":"<p>por  Daniel Pustilnik <\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[26,49],"tags":[],"class_list":["post-223","post","type-post","status-publish","format-standard","hentry","category-general","category-medio-ambiente"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.2 - 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