Temporal variation of rainfall trends in parambikulam aliyar sub basin, Tamil Nadu
Table 1. Statistical properties of rain-gauge station wise annual and seasonal rainfall series
Station/
Coefficient
Mean
Maximum Minimum Standard
Correlation
of
Skewness Kurtosis
Time series
(mm)
(mm)
(mm)
Deviation
coefficient
variation
Aliyar Nagar
Annual
839.51
1189.40
443.70
229.43
0.27
-0.228
-1.137
0.398
South West Monsoon
285.00
613.20
44.50
126.05
0.44
0.478
0.574
0.578
North East Monsoon
387.68
711.50
97.40
173.89
0.45
0.194
-0.962
-0.169
Winter
19.90
102.20
0.00
27.73
1.39
1.701
2.213
0.010
Summer
146.92
576.60
0.00
102.23
0.70
2.460
9.998
-0.056
Anamalai
Annual
3564.75
5346.40
2024.00
697.66
0.20
0.213
0.967
0.209
South West Monsoon
2631.50
4553.40
1518.00
610.96
0.23
0.891
2.156
0.886
North East Monsoon
567.14
953.00
186.50
203.79
0.36
0.197
-0.852
0.108
Winter
25.32
147.50
0.00
33.46
1.32
1.998
4.948
0.301
Summer
340.79
929.80
108.50
209.07
0.61
1.175
0.922
-0.036
Attakatti
Annual
1110.32
1756.30
502.90
386.07
0.35
0.110
-1.248
0.406
South West Monsoon
486.18
1412.70
150.90
271.59
0.56
1.418
3.081
0.799
North East Monsoon
454.49
877.00
53.60
206.55
0.45
0.057
-0.698
0.094
Winter
21.72
103.00
0.00
30.91
1.42
1.573
1.588
-0.138
Summer
147.93
298.00
0.00
74.74
0.51
0.177
-0.287
-0.147
Chinnakallar
Annual
4750.25
8673.20
2206.00
1568.60
0.33
0.879
0.858
0.550
South West Monsoon
3639.37
7194.00
1736.00
1299.29
0.36
1.003
1.074
0.968
North East Monsoon
704.81
1220.00
222.00
298.44
0.42
0.187
-1.171
0.222
Winter
21.48
119.90
0.00
30.93
1.44
1.669
2.352
-0.063
Summer
384.59
1161.20
4.00
269.84
0.70
1.354
1.778
-0.001
Pollachi
Annual
828.66
1343.20
441.50
225.61
0.27
0.379
0.191
0.237
South West Monsoon
357.37
742.90
161.00
128.69
0.36
0.796
1.256
0.573
North East Monsoon
310.04
713.00
76.40
160.08
0.52
0.687
0.106
0.012
Winter
15.76
108.00
0.00
26.08
1.65
2.128
4.508
-0.101
Summer
145.49
321.00
52.00
69.04
0.47
1.133
1.265
0.209
Topslip
Annual
1328.20
1985.50
476.00
326.20
0.25
-0.199
0.442
-0.145
South West Monsoon
756.45
1166.00
290.90
219.18
0.29
0.015
-0.062
0.792
North East Monsoon
386.40
831.00
91.30
211.27
0.55
0.570
-0.407
0.287
Winter
24.60
150.00
0.00
38.59
1.57
1.781
2.783
-0.174
Summer
160.75
357.00
18.40
102.33
0.64
0.494
-1.018
0.050
Vettaikaranpudur
Annual
741.54
1534.80
441.20
227.00
0.31
1.535
3.896
0.166
45