Environmental Engineering Reference
In-Depth Information
levels less than 14 m.
progressive long
Seasonal fluctuations in
term decrease in
reservoir level reflected
average rate to
in leakage rates.
1-2 l/s approx 10
years after first
filling.
White Spur
43
41
7
38
12
30
2
Short duration
Long-term rate of
fluctuations in leakage
2 l/s at water depth
rate likely related to
of 34 m established
rainfall events. Reservoir
approx 3 years after
level near constant.
first filling.
Winneke
85
82
60
81
25-30
Unknown
15
Progressive increase in
General long term
leakage rate with water
trend of reduction in
depth during first filling.
leakage rate. Long
Approx 20 l/s at water
term rate of 25 l/s 6
depth of 40 m and 50 l/s
years after first
at water depth of 60 m.
filling reduced to
15 l/s 10 years after
first filling.
Xingo
140
137
160
133
200
137
140
Initial decrease in
Max rate due to
leakage rate for one
cracking in slab.
year after completion
Steady decrease to
of first filling. Then
near constant 140 l/s
increase from 100 l/s
approx 5 years after
to 200 l/s over two years
first filling.
due to cracking in face
slab. Reservoir level
maintained at full
supply level.
Copyright © 2005 Taylor & Francis Group plc, London, UK
