|
State of Environment Reporting
Status
and Trends in Groundwater Supply
|
Percentage
of Observation Wells that show Declining Water Levels Due
Primarily to Human Activities
|
|
Years
|
Number
of wells
reflecting natural seasonal fluctuations
|
Number
of wells reflecting human impacts
|
Number
of wells reflecting human impacts & showing water level
decline
|
Total
Number of wells
|
Percentage
of observation wells that show declining water levels due
to human impacts
|
| 1985-1990 |
23
|
59
|
26
|
108
|
24%
|
| 1990-1995 |
28
|
72
|
25
|
125
|
20%
|
| 1995-2000 |
31
|
88
|
20
|
139
|
14%
|
SOURCE:
Ministry of Water, Land and Air Protection, 2001. NOTES: Number
of observation wells with suitable long-term trend data increased
from 31 to 163 over a 35-year period. Due to missing data, loss
of observers, etc., only 139 sites were suitable for assessing trends
for the period 1995-2000.
|
