{"id":1348,"date":"2026-05-12T21:47:37","date_gmt":"2026-05-12T21:47:37","guid":{"rendered":"https:\/\/books.gw-project.org\/basic-hydrogeology-an-introduction-to-the-fundamentals-of-groundwater-science\/chapter\/exercise-5\/"},"modified":"2026-05-13T03:33:46","modified_gmt":"2026-05-13T03:33:46","slug":"exercise-5","status":"publish","type":"chapter","link":"https:\/\/books.gw-project.org\/basic-hydrogeology-an-introduction-to-the-fundamentals-of-groundwater-science\/chapter\/exercise-5\/","title":{"raw":"Exercise 5","rendered":"Exercise 5"},"content":{"raw":"<div id=\"exercise-5\" class=\"level1\">\r\n<ol type=\"a\">\r\n \t<li>Use the hydraulic gradients determined for Figure 9 in Exercise 3 to calculate an average linear velocity (in m\/s and in m\/d) for groundwater in the aquifer between wells b and c. Assume that the hydraulic conductivity is 0.050 m\/s and the effective porosity is 0.15.<\/li>\r\n \t<li>A volume of an unknown contaminant is poured into well b and allowed to flow away from the well in the aquifer. Assuming that the contaminant began flowing away from well b just after it was poured into the well, use the average linear velocity calculated in part (a) to calculate the average time (in days) required for the contaminant to reach well c.<\/li>\r\n<\/ol>\r\n<div data-custom-style=\"First Paragraph\">\r\n\r\n<a href=\"\/basic-hydrogeology-an-introduction-to-the-fundamentals-of-groundwater-science\/chapter\/solution-exercise-5\/#solution-exercise-5\"><span data-custom-style=\"Hyperlink\"><strong>Solution for Exercise\u00a05<\/strong><\/span><\/a>\u2ba7\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\/permeability\/#extext05\"><span data-custom-style=\"Hyperlink\"><strong>Return to where text linked to Exercise\u00a05<\/strong><\/span><\/a>\u2ba5\r\n\r\n<\/div>\r\n<\/div>","rendered":"<div id=\"exercise-5\" class=\"level1\">\n<ol type=\"a\">\n<li>Use the hydraulic gradients determined for Figure 9 in Exercise 3 to calculate an average linear velocity (in m\/s and in m\/d) for groundwater in the aquifer between wells b and c. Assume that the hydraulic conductivity is 0.050 m\/s and the effective porosity is 0.15.<\/li>\n<li>A volume of an unknown contaminant is poured into well b and allowed to flow away from the well in the aquifer. Assuming that the contaminant began flowing away from well b just after it was poured into the well, use the average linear velocity calculated in part (a) to calculate the average time (in days) required for the contaminant to reach well c.<\/li>\n<\/ol>\n<div data-custom-style=\"First Paragraph\">\n<p><a href=\"\/basic-hydrogeology-an-introduction-to-the-fundamentals-of-groundwater-science\/chapter\/solution-exercise-5\/#solution-exercise-5\"><span data-custom-style=\"Hyperlink\"><strong>Solution for Exercise\u00a05<\/strong><\/span><\/a>\u2ba7<\/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\/permeability\/#extext05\"><span data-custom-style=\"Hyperlink\"><strong>Return to where text linked to Exercise\u00a05<\/strong><\/span><\/a>\u2ba5<\/p>\n<\/div>\n<\/div>\n","protected":false},"author":8,"menu_order":88,"template":"","meta":{"pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":""},"chapter-type":[],"contributor":[],"license":[],"class_list":["post-1348","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\/1348","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\/1348\/revisions"}],"predecessor-version":[{"id":1796,"href":"https:\/\/books.gw-project.org\/basic-hydrogeology-an-introduction-to-the-fundamentals-of-groundwater-science\/wp-json\/pressbooks\/v2\/chapters\/1348\/revisions\/1796"}],"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\/1348\/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=1348"}],"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=1348"},{"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=1348"},{"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=1348"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}