Environmental Engineering Reference
In-Depth Information
slab cracks.
filling due to face
slab cracking.
Kangaroo
60
48
Unknown
Unknown
11
Unknown
2.5
Long-term rate occurs
Peak rates related
Creek
at water depths greater
to rainfall events.
than 25 m. Less than
25 m and leakage rate
appears to reduce.
Kotmale
90
85.6
10-40
40-80
30-50
85
10-20
Seasonal fluctuations in
Rainfall events
leakage rate due to
also cause peak in
reservoir fluctuations.
leakage rate.
Minimum rate of 10 l/s
at water depth
of 40-45 m.
Little Para
53
50.5
16
43
18
50.5
3-5
Seasonal fluctuations in
Max flow
leakage rate related to
measured just
reservoir level. Peak
prior to overflow
leakage rate at peak
event
reservoir levels.
Mackintosh
75
73
25
62
20-25
68
8-10
Fluctuations in leakage
Gradual decline in
rate related to 5-10 m
leakage rate over
fluctuations in
10 years since first
reservoir level.
filling.
Mangrove
80
74
Unknown
Unknown
5.6
67.5
2.5
Seasonal fluctuations in
Long-term rate of
Creek
leakage are unknown.
2.5 l/s established at
Increase in leakage rate
water depth of 46 m,
observed with higher
15 years after
water depth due to face
commencement of
slab cracking.
first filling.
Murchison
94
85
5-10
70
10
73
2
Short duration peak
Long-term base rate
leakage up to 15-25 l/s
decreased to 2 l/s
related to rainfall events.
5-6 years after first
Increase in rate related
filling. Steady
to reservoir level
increase to 5-10 l/s
(10 l/s at FSL,
10 years after first
5 l/s at
75 m
filling.
water depth)
(Continued)
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