{"id":99,"date":"2019-11-27T15:32:56","date_gmt":"2019-11-27T15:32:56","guid":{"rendered":"http:\/\/aquifer.geology.buffalo.edu\/?p=99"},"modified":"2022-10-18T21:06:07","modified_gmt":"2022-10-18T21:06:07","slug":"quantifying-hydraulic-conductivity-slug-test","status":"publish","type":"post","link":"https:\/\/aquifer.geology.buffalo.edu\/index.php\/2019\/11\/27\/quantifying-hydraulic-conductivity-slug-test\/","title":{"rendered":"Quantifying Hydraulic Conductivity: Slug Test"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

Objectives: Quantify hydraulic conductivity in an unconfined\naquifer based on slug test data of changes in water levels over time. <\/p>\n\n\n\n

1.  The biggest\nunknown in groundwater problems is knowing the hydraulic conductivity of an\naquifer.  While there are multiple\nmethods available for quantifying hydraulic conductivity one of the most\npopular methods is the slug test.  This\nmethod artificially changes the water level in a well and monitors the response\nback to the static level.  Using the data\nprovided below and foldable aquifer model address the following problems.<\/p>\n\n\n\n

Table1. Time vs drawdown data.<\/p>\n\n\n\n

\n Time\n (sec)<\/strong>\n <\/td>\n H-h\/(H-H<\/strong>o<\/strong>)<\/strong>\n <\/td><\/tr>
\n 1<\/strong>\n <\/td>\n 1\n <\/td><\/tr>
\n 10<\/strong>\n <\/td>\n 0.89\n <\/td><\/tr>
\n 20<\/strong>\n <\/td>\n 0.75\n <\/td><\/tr>
\n 30<\/strong>\n <\/td>\n 0.64\n <\/td><\/tr>
\n 50<\/strong>\n <\/td>\n 0.3\n <\/td><\/tr>
\n 100<\/strong>\n <\/td>\n 0.28\n <\/td><\/tr>
\n 120<\/strong>\n <\/td>\n 0.2\n <\/td><\/tr>
\n 180<\/strong>\n <\/td>\n 0.08\n <\/td><\/tr>
\n 200<\/strong>\n <\/td>\n 0.05\n <\/td><\/tr>
\n 300<\/strong>\n <\/td>\n 0.02\n <\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

A. Quantify the hydraulic conductivity using the Hvorslev method.   <\/p>\n\n\n\n

B. Based on the value of hydraulic conductivity above determine\nif this geologic unit makes a better aquifer or confining unit.   Please explain your answer. <\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n
Foldable Aquifer Model<\/a>Download<\/a><\/div>\n\n\n\n

Below is a second class problem (PDF)
Slug Test Class Problem II
<\/a>Download<\/a><\/div>\n\n\n\n
\"Creative<\/a><\/figure>\n\n\n\n


This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

Objectives: Quantify hydraulic conductivity in an unconfined aquifer based on slug test data of changes in water levels over time. 1.  The biggest unknown in groundwater problems is knowing the hydraulic conductivity of an aquifer.  While there are multiple methods available for quantifying hydraulic conductivity one of the most popular methods is the slug test.  … <\/p>\n

Continue reading “Quantifying Hydraulic Conductivity: Slug Test”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12,11],"tags":[],"class_list":["post-99","post","type-post","status-publish","format-standard","hentry","category-hydraulic-conductivity","category-hydraulic-head"],"_links":{"self":[{"href":"https:\/\/aquifer.geology.buffalo.edu\/index.php\/wp-json\/wp\/v2\/posts\/99","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aquifer.geology.buffalo.edu\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aquifer.geology.buffalo.edu\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aquifer.geology.buffalo.edu\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aquifer.geology.buffalo.edu\/index.php\/wp-json\/wp\/v2\/comments?post=99"}],"version-history":[{"count":8,"href":"https:\/\/aquifer.geology.buffalo.edu\/index.php\/wp-json\/wp\/v2\/posts\/99\/revisions"}],"predecessor-version":[{"id":364,"href":"https:\/\/aquifer.geology.buffalo.edu\/index.php\/wp-json\/wp\/v2\/posts\/99\/revisions\/364"}],"wp:attachment":[{"href":"https:\/\/aquifer.geology.buffalo.edu\/index.php\/wp-json\/wp\/v2\/media?parent=99"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aquifer.geology.buffalo.edu\/index.php\/wp-json\/wp\/v2\/categories?post=99"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aquifer.geology.buffalo.edu\/index.php\/wp-json\/wp\/v2\/tags?post=99"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}