R.

Allan Freeze
Department of Geological Sciences
University of British Columbia
Vancouver, British Columbia

John A, Cherry
Department of Earth Sciences
University of Waterloo
Waterloo, Ontario

GROUNXDWATER
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29 Physical Properties and Principles / Ch. 2

Table 2.2 Range of Values of Hydraulic Conductivity

I and Permeability
I

Rocks Unconsolidated A k K /6 /K
deposits (dorcy) (cm2) (cm/s) (m/s) (gal/doy/ft 2)
)
I jo-3 toO - Ii
9- 104
to4 -lo-, -1° -lo°-, -106
0)
-10o-5 - -ljo-, - to6
9 I 01 10

0) - t - _t1 to-_ t3
' 00 C7 Co
O (o
0 _1-7 _102 . fo-4 -10o3
C,
Q_
lo-, 10-3 0-2 lo,

QI>
9I -°
ll jo-s9 i- 4
io 8s to
CC-~ 1-2t- -I
10-5
0n
to-1o
Et , l-,R~
10-6

7
0n '0-11

10-7 - ic-3
1o-4 10-12
'-0
I-

8
00C)
t5 -013 F to- - ro-IO
'2c |(
S ) -10-4
DCoSI . ,1-4 io-9 -lo-II
-10-6 4
_ .-1
0
t.?
IIE
0
3
C)a
Itoc _
i-1t~2 - 10-5

- 0-6
Ieo o0-e _,-tt L 0-13
7
- lo

Table 2.3 Conversion Factors for Permeability

and Hydraulic Conductivity Units
'ity
on Permeability, k* Hydraulic conductivity, K
hat
cm2 ft2 darcy m/s 'ft/s U.S. gal/day/tts
ful.
2 9,80 x 102 3.22 x 103 1.85 x 109
has cmn 1 1.08 x 10-3 1.01 x 108
ft2 9.29 x 102 1 9.42 x 10)0 9.11 x 10' 2.99 x 106 1.71 x 012
nits darcy 9.87 x 10-9 1.06 x 10-1 1 9.66 x 10-6 3.17 x 10-s 1.82 x 101
rM/s 1.02 x 10-3 1.10 x 10-6 1.04 x 10$ 1 3.28 2,12 x 106
Ito 3.11 x 10-4 3.35 x 10' 3,15 x 104 3,05 x 10-1 1 6.46 x 105
ft/s
I to U.S. gal/day/fl'5.42 x 10-10 5.83 x 10-13 5.49 x 10-2 4.72 x 10-7 1.55 x 10-6 1

*To obtain k in ft2, multiply k in cm2 by 1.08 x 10-3.