Government of the People's Republic of Bangladesh Ministry of ...
Government of the People's Republic of Bangladesh Ministry of ...
Government of the People's Republic of Bangladesh Ministry of ...
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Table 4.9 Summary <strong>of</strong> Aquifer Parameters for <strong>the</strong> Upper Shallow, Lower Shallow and Deep<br />
Aquifers at Faridpur.<br />
Aquifer Upper shallow Lower<br />
shallow<br />
Approx. age (kaBP)<br />
Gradient (m km -1 )<br />
Width (km)<br />
Transmissivity (m 2 d -1 )<br />
Flow (m 3 d -1 5 to 8<br />
8-23<br />
0.08<br />
0.08<br />
18<br />
18<br />
125-1870 40-5020<br />
)<br />
1190<br />
3287<br />
Thickness (m)<br />
45-60<br />
75-90<br />
Porosity (-)<br />
0.10-0.15 0.05-0.20<br />
Time to replace one pore volume (ka)<br />
Source: BGS-DPHE (2001)<br />
12-185<br />
10-321<br />
A-26<br />
Deep<br />
>140<br />
0.08<br />
18<br />
120-1830<br />
6311<br />
90<br />
0.10-0.15<br />
2.3-114<br />
Table 4.10 Estimate <strong>of</strong> Flow Rates and Time for Flushing for a Cross Section Through<br />
Faridpur<br />
a.Block transmissivities (m 2 d -1 )<br />
1<br />
2a<br />
2b<br />
3a<br />
3b<br />
3c<br />
3d<br />
b. Block throughflow rates (m 3 d -1 )<br />
1<br />
2a<br />
2b<br />
3a<br />
3b<br />
3c<br />
3d<br />
Layer Column A Column B Column C Column D<br />
c. Time to replace block volume (a)<br />
1<br />
2a<br />
2b<br />
3a<br />
3b<br />
3c<br />
3d<br />
Source: BGS-DPHE (2001)<br />
1870<br />
1140<br />
780<br />
120<br />
1830<br />
940<br />
1220<br />
598.4<br />
364.8<br />
249.6<br />
38.4<br />
585.6<br />
300.8<br />
390.4<br />
12362<br />
11265<br />
10976<br />
114155<br />
2339<br />
5465<br />
8772<br />
125<br />
920<br />
780<br />
120<br />
1830<br />
940<br />
1220<br />
40<br />
294.4<br />
249.6<br />
38.4<br />
585.6<br />
300.8<br />
390.4<br />
184932<br />
11167<br />
13172<br />
85616<br />
4678<br />
5465<br />
10527<br />
1230<br />
5020<br />
430<br />
1830<br />
940<br />
1400<br />
492<br />
2008<br />
172<br />
585.6<br />
300.8<br />
560<br />
12529<br />
10233<br />
27875<br />
3509<br />
5465<br />
9173<br />
PDF created with FinePrint pdfFactory trial version http://www.fineprint.com<br />
150<br />
240<br />
40<br />
1720<br />
1830<br />
940<br />
1220<br />
60<br />
96<br />
688<br />
585.6<br />
300.8<br />
488<br />
68493<br />
14269<br />
321062<br />
6969<br />
3509<br />
5465<br />
8772