PART 12 Aquifer pumping tests - Dr. M. Zreda - University of Arizona
PART 12 Aquifer pumping tests - Dr. M. Zreda - University of Arizona
PART 12 Aquifer pumping tests - Dr. M. Zreda - University of Arizona
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
<strong>Aquifer</strong> <strong>pumping</strong> <strong>tests</strong> 91<br />
Rewrite in terms <strong>of</strong> decimal logarithms (log)<br />
T<br />
2.3Q r2 = -----------------------log--- Thiem equation for observation wells<br />
2π( h2 – h1) r1 and if r 2 = 10r 1 , log10 = 1 and we have<br />
T<br />
=<br />
-------------<br />
2.3Q<br />
Equilibrium (= Thiem) steady state equation<br />
2π∆h<br />
This is usually used for more than two observation wells.<br />
If aquifer is infinite (no lakes) and confined, supply <strong>of</strong> water is from storage → transient flow.<br />
;;;;<br />
;;;; yyyy ;;;; yyyy<br />
Q<br />
= h0 at r = infinity for all t<br />
yyyyh<br />
Hydrogeology, 431/531 - <strong>University</strong> <strong>of</strong> <strong>Arizona</strong> - Fall 2007 <strong>Dr</strong>. Marek <strong>Zreda</strong>
Change language