{"id":1359,"date":"2026-05-12T21:47:40","date_gmt":"2026-05-12T21:47:40","guid":{"rendered":"https:\/\/books.gw-project.org\/basic-hydrogeology-an-introduction-to-the-fundamentals-of-groundwater-science\/chapter\/exercise-12\/"},"modified":"2026-05-13T03:34:32","modified_gmt":"2026-05-13T03:34:32","slug":"exercise-12","status":"publish","type":"chapter","link":"https:\/\/books.gw-project.org\/basic-hydrogeology-an-introduction-to-the-fundamentals-of-groundwater-science\/chapter\/exercise-12\/","title":{"raw":"Exercise 12","rendered":"Exercise 12"},"content":{"raw":"<div id=\"exercise-12\" class=\"level1\">\r\n<div data-custom-style=\"First Paragraph\">\r\n\r\nA well is pumped at 300 m<sup>3<\/sup>\/d for 36\u00a0hours. Drawdowns are measured in an observation well located 2\u00a0meters from the pumping well. The following image shows the drawdown data versus time on a semi\u2011log plot. Use the Cooper\u2013Jacob simplification of the Theis equation to determine [latex]T[\/latex] and [latex]S[\/latex] for the formation.\r\n\r\n<\/div>\r\n<div data-custom-style=\"Body Text\">\r\n\r\n<img style=\"display: block; margin-left: auto; margin-right: auto; ;width: 5.00184in; height: 4.83333in;\" src=\"https:\/\/books.gw-project.org\/basic-hydrogeology-an-introduction-to-the-fundamentals-of-groundwater-science\/wp-content\/uploads\/sites\/42\/2026\/05\/file148-2.png\" alt=\"\" \/>\r\n\r\n<\/div>\r\n<div data-custom-style=\"Body Text\">\r\n\r\n<a href=\"\/basic-hydrogeology-an-introduction-to-the-fundamentals-of-groundwater-science\/chapter\/solution-exercise-12\/#solution-exercise-12\"><span data-custom-style=\"Hyperlink\"><strong><u>Click for solution to Exercise\u00a012<\/u><\/strong><\/span><\/a>\u2ba7\r\n\r\n<\/div>\r\n<div data-custom-style=\"Body Text\">\r\n\r\n<u><a href=\"\/basic-hydrogeology-an-introduction-to-the-fundamentals-of-groundwater-science\/chapter\/simplification-of-the-theis-equation\/#extext12\"><span data-custom-style=\"Hyperlink\"><strong>Return to where text linked to Exercise\u00a012<\/strong><\/span><\/a>\u2ba5<\/u>\r\n\r\n<\/div>\r\n<\/div>","rendered":"<div id=\"exercise-12\" class=\"level1\">\n<div data-custom-style=\"First Paragraph\">\n<p>A well is pumped at 300 m<sup>3<\/sup>\/d for 36\u00a0hours. Drawdowns are measured in an observation well located 2\u00a0meters from the pumping well. The following image shows the drawdown data versus time on a semi\u2011log plot. Use the Cooper\u2013Jacob simplification of the Theis equation to determine [latex]T[\/latex] and [latex]S[\/latex] for the formation.<\/p>\n<\/div>\n<div data-custom-style=\"Body Text\">\n<p><img decoding=\"async\" style=\"display: block; margin-left: auto; margin-right: auto; ;width: 5.00184in; height: 4.83333in;\" src=\"https:\/\/books.gw-project.org\/basic-hydrogeology-an-introduction-to-the-fundamentals-of-groundwater-science\/wp-content\/uploads\/sites\/42\/2026\/05\/file148-2.png\" alt=\"\" \/><\/p>\n<\/div>\n<div data-custom-style=\"Body Text\">\n<p><a href=\"\/basic-hydrogeology-an-introduction-to-the-fundamentals-of-groundwater-science\/chapter\/solution-exercise-12\/#solution-exercise-12\"><span data-custom-style=\"Hyperlink\"><strong><u>Click for solution to Exercise\u00a012<\/u><\/strong><\/span><\/a>\u2ba7<\/p>\n<\/div>\n<div data-custom-style=\"Body Text\">\n<p><u><a href=\"\/basic-hydrogeology-an-introduction-to-the-fundamentals-of-groundwater-science\/chapter\/simplification-of-the-theis-equation\/#extext12\"><span data-custom-style=\"Hyperlink\"><strong>Return to where text linked to Exercise\u00a012<\/strong><\/span><\/a>\u2ba5<\/u><\/p>\n<\/div>\n<\/div>\n","protected":false},"author":8,"menu_order":95,"template":"","meta":{"pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":""},"chapter-type":[],"contributor":[],"license":[],"class_list":["post-1359","chapter","type-chapter","status-publish","hentry"],"part":1522,"_links":{"self":[{"href":"https:\/\/books.gw-project.org\/basic-hydrogeology-an-introduction-to-the-fundamentals-of-groundwater-science\/wp-json\/pressbooks\/v2\/chapters\/1359","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/books.gw-project.org\/basic-hydrogeology-an-introduction-to-the-fundamentals-of-groundwater-science\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/books.gw-project.org\/basic-hydrogeology-an-introduction-to-the-fundamentals-of-groundwater-science\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/books.gw-project.org\/basic-hydrogeology-an-introduction-to-the-fundamentals-of-groundwater-science\/wp-json\/wp\/v2\/users\/8"}],"version-history":[{"count":2,"href":"https:\/\/books.gw-project.org\/basic-hydrogeology-an-introduction-to-the-fundamentals-of-groundwater-science\/wp-json\/pressbooks\/v2\/chapters\/1359\/revisions"}],"predecessor-version":[{"id":1803,"href":"https:\/\/books.gw-project.org\/basic-hydrogeology-an-introduction-to-the-fundamentals-of-groundwater-science\/wp-json\/pressbooks\/v2\/chapters\/1359\/revisions\/1803"}],"part":[{"href":"https:\/\/books.gw-project.org\/basic-hydrogeology-an-introduction-to-the-fundamentals-of-groundwater-science\/wp-json\/pressbooks\/v2\/parts\/1522"}],"metadata":[{"href":"https:\/\/books.gw-project.org\/basic-hydrogeology-an-introduction-to-the-fundamentals-of-groundwater-science\/wp-json\/pressbooks\/v2\/chapters\/1359\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/books.gw-project.org\/basic-hydrogeology-an-introduction-to-the-fundamentals-of-groundwater-science\/wp-json\/wp\/v2\/media?parent=1359"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/books.gw-project.org\/basic-hydrogeology-an-introduction-to-the-fundamentals-of-groundwater-science\/wp-json\/pressbooks\/v2\/chapter-type?post=1359"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/books.gw-project.org\/basic-hydrogeology-an-introduction-to-the-fundamentals-of-groundwater-science\/wp-json\/wp\/v2\/contributor?post=1359"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/books.gw-project.org\/basic-hydrogeology-an-introduction-to-the-fundamentals-of-groundwater-science\/wp-json\/wp\/v2\/license?post=1359"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}