IHA
|
Units
|
Pre-reservoir
(1961–1974)
|
Post-reservoir
(1975–2017)
|
Relative change
(%)
|
Mean flow in January |
m3/s |
10.64 |
20.40 |
0.92 |
Mean flow in February |
m3/s |
8.89 |
19.49 |
1.19 |
Mean flow in March |
m3/s |
22.81 |
21.39 |
-0.06 |
Mean flow in April |
m3/s |
47.18 |
28.41 |
-0.40 |
Mean flow in May |
m3/s |
50.81 |
123.57 |
1.43 |
Mean flow in June |
m3/s |
41.97 |
83.69 |
0.99 |
Mean flow in July |
m3/s |
116.86 |
120.62 |
0.03 |
Mean flow in August |
m3/s |
276.87 |
148.98 |
-0.46 |
Mean flow in September |
m3/s |
100.88 |
58.99 |
-0.42 |
Mean flow in October |
m3/s |
55.53 |
40.43 |
-0.27 |
Mean flow in November |
m3/s |
37.82 |
31.18 |
-0.18 |
Mean flow in December |
m3/s |
18.95 |
24.41 |
0.29 |
1-day minimum |
m3/s |
6.83 |
8.29 |
0.21 |
3-day minimum |
m3/s |
7.07 |
8.66 |
0.22 |
7-day minimum |
m3/s |
7.46 |
9.53 |
0.28 |
30-day minimum |
m3/s |
8.38 |
11.97 |
0.43 |
90-day minimum |
m3/s |
16.53 |
16.97 |
0.03 |
1-day maximum |
m3/s |
1455.91 |
787.36 |
-0.46 |
3-day maximum |
m3/s |
1265.55 |
713.57 |
-0.44 |
7-day maximum |
m3/s |
948.76 |
570.27 |
-0.40 |
30-day maximum |
m3/s |
477.75 |
311.08 |
-0.35 |
90-day maximum |
m3/s |
255.91 |
178.88 |
-0.30 |
Base flow index |
m3/s |
0.10 |
0.14 |
0.45 |
Date of minimum |
day |
102.55 |
125.13 |
0.22 |
Date of maximum |
day |
203.73 |
202.62 |
-0.01 |
Low pulse count |
- |
3.82 |
6.16 |
0.61 |
Low pulse duration |
day |
14.50 |
9.70 |
-0.33 |
High pulse count |
- |
4.09 |
7.38 |
0.80 |
High pulse duration |
day |
15.64 |
10.88 |
-0.30 |
Rise rate |
m3/s/day |
2.17 |
2.41 |
0.11 |
Fall rate |
m3/s/day |
-2.31 |
-2.12 |
-0.08 |
Numbers of reversals |
- |
99.64 |
111.20 |
0.12 |