Underground Waters |
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Ground water succioned phase |
Aquifers properties |
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water type |
bars (atm) (in soil) |
|
porosity n |
relation to holes (e) |
contain humidity (ratio) |
Grain density mg.m.3 |
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gravity |
0 - 0.3 |
clay glacial coarse |
0.55 |
0.9 - 1.4 |
0.3 - 0.5 |
1.17 - 1.48 |
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capilar |
0.3 - 15 |
clay glacial fine |
0.37 |
0.6 |
0.2 |
1.73 |
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osmotic |
15 - 150 |
glacial fix |
0.2 |
0.25 |
0.1 |
2.12 |
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Bedrocks area recharging |
mud |
0.6 |
|
|
1 |
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|
sahelian |
south-sahel |
soudanian |
loess |
|
0.9 |
0.25 |
1.38 |
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rain mm/year |
500 |
800 |
>1000 |
sand uniformally free |
0.45 |
0.85 |
0.3 |
1.45 |
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usable recharge mm/year |
50 |
65 |
160 |
sand unif.dense |
0.35 |
0.5 |
0.15 0.2 |
1.75 - 1.83 |
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vol .use m |
50000 |
65000 |
80000 |
mud area.soft angulus |
0.4 |
0.65 |
0.25 |
1.59 |
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vol .use m day |
130 |
180 |
200 |
densa regul. fine mud |
0.3 |
0.4 |
0.15 |
1.86 |
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|
|
|
|
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Aquifer characteristic values |
Movement of bacteria in soil in relation to groundwater speed |
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material |
porosity |
val caract (m/s) |
pollution |
organism |
length of travel m |
medium |
speed m/day |
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clay |
0.55 |
2.30E-09 |
river water |
E. coli |
0.30 |
dune sand |
0.11 |
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lime (clay mud) |
0.35 |
6.00E-06 |
sewage |
Bacteria |
0.31 |
dense soil |
0.01 |
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finesand |
0.45 |
2.90E-05 |
sewage |
Bacteria |
0.61 |
porous soil |
0.1 |
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intermediate sand |
0.37 |
1.40E-04 |
sewage |
Coliforms |
0.91 |
coarse sand |
0.08 |
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coarse sand |
0.3 |
5.20E-04 |
sewage |
Bacteria |
1.5 |
fine sand |
0.03 |
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sand and gravels |
0.2 |
6.00E-04 |
sewage |
E. coli |
2 |
fine sand |
0.128 |
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gravel |
0.25 |
3.10E-03 |
river water |
E. coli |
3 |
sand |
0;004 |
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chalk |
< 0.05 |
9.30E-10 |
sewage |
B. coli |
3.1 |
fine sand |
0.5 |
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granite |
< 0.01 |
1.20E-10 |
sewage |
Bacteria |
4.5 |
fine sand |
0.03 |
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quartzite |
0.15 |
5.80E-07 |
wastewater |
Coliforms |
6.1 |
fine sand |
0.03 |
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cobbles |
0.15 |
1.10E-05 |
river water |
Bacteria |
7.5 |
sand |
0.08 |
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fractured rock |
0.05 |
1E-08 - 1E-04 |
sewage |
B. coli |
10.7 |
sand gravel |
1.5 |
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Orders of magntitude of hydraulic conductivity K (m/s) |
sewage |
C. welchii |
15.2 |
fine sand |
0.5 |
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imper-meable |
unconsolidated rocks |
consolidated rocks |
polluted water |
Bacteria |
18.3 |
sand gravel |
0.53 |
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10 |
|
granites |
sewage |
B. coli |
19.8 |
fine sand |
0.11 |
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10 |
solid clay |
gneiss |
sewage |
B. coli |
24.4 |
sand gravel |
4.10 |
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10 |
clay |
compact basalts |
pure culture |
B. stearothermophilis |
28.7 |
crystalline rock |
25.5 |
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10 |
silt/clay |
sandstone |
sewage |
Coliforms |
30.5 |
sand |
21.8 |
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10 |
silt |
compact limestone |
sewage |
Bacteria |
61 |
sand gravel |
30.5 |
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semiper-meable |
fine sand |
argillaceous schists |
sewage |
S. typhi |
64 |
gravel loam |
42.7 |
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10 |
clean sand |
sandstones |
sewage |
Bacteria |
70.7 |
fine sand |
0.11 |
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10 |
sand/gravel |
fracture rocks |
sewage |
Coliforms |
91 |
sand gravel |
0.24 |
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10 |
|
|
sewage |
Coliforms |
457.2 |
coarse gravel |
30.5 |
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10 |
|
|
sewage |
Coliforms |
830 |
sand gravel |
1.6 |
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permea-ble |
clean gravel |
karst |
polluted water |
Bacteria |
850 |
coarse gravel |
5.5 |
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10 |
|
|
polluted water |
Bacteria |
1000 |
fractured limestone |
5.5 |
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