TM 5-815-5/AFM 88-5, Chap 6/NAVFAC P-418
Table 4-1. Index to Figures for Flow, Head, or drawdown Equations for Given Corrections
Type of
Assumed Source
Figure
Penetration
System
Index
Flow
of Seepage
Flow to a
F
Line
Line slot
4-1, 4-2
slot
A,
G, C
4-2, 4-3
P
Line
Line slot
A,
G, C
4-4
Two-line
Line slot
P, F
A,
G
P
Two-line
Two-line slots
4-5
A,
G
4-6, 4-7
A
Circular
Circular slots
P, F
Circular
Rectangular
4-8, 4-9
slots
A
P, F
Flow to
Circular
Single well
wells
A
4-10
P, F
Circular
Single well
G
4-11
P, F
Circular
Single well
C
F
4-12
Circular
Multiple wells
F
4-13
A, G
Circular
Circular, rec-
tangular,
and two-line
A, G
arrays
F
4-14
Circular
Circular array
A
F
4-15
Circular
Circular and
rectangular
A
array
P
4-16
Single line
Single well
F
4-17
A, G
Single line
Multiple wells
F
4-18
A, G
Single line
Circular, line,
two-line, and
rectangular
F
arrays
4-19
A, G
Single line
A
F
Infinite line
4-20
Single line
A
4-21
Infinite line
P, F
Single line
Infinite line
G
F
4-22
Approximate radius of influence
4-23
Other
Hydraulic head loss in a well
4-24
Hydraulic head loss in various wellpoints
4-25
Equivalent length of straight pipe for various fittings
4-26
Shape factors for wells of various penetrations centered
inside a circular source
4-27
Flow and drawdown for slots from flow-net analyses
4-28
Flow and drawdown for wells from flow-net analyses
4-29
Diagrammatic layout of electrical analogy model
4-30
Note: A = artesian flow; G = gravity flow; C = combined artesian-gravity flow; F = fully
penetrating; P = partially penetrating.
U. S. Army Corps of Engineers
4-25
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