Operative modes of the Chardara water reservoir. Comparison of planned and actual values for vegetation period 1997

Parametres
April
May
June
July
August
September
For vegetation
I
II
III
I
II
III
I
II
III
I
II
III
I
II
III
I
II
III
Inflow
forecast
m3/sec
714.8
612.4
435.9
376.7
272.8
280.1
225.2
252.2
144.0
104.3
114.4
158.3
133.7
116.2
195.0
282.1
235.3
244.9
Mm3
4286.7
actual
m3/sec
516.5
295.1
248.7
415.1
470.2
288.9
406.6
315.0
235.3
154.5
126.5
122.3
131.5
124.2
125.6
133.3
136.7
135.9
Mm3
3832.3
variance
%
27.7
51.8
42.9
-10.2
-72.4
-3.2
-80.5
-24.9
-63.4
-48.2
-10.5
22.8
1.6
-6.9
35.6
52.7
41.9
44.5
%
10.6
Mm3
171.3
445.5
607.2
574.0
403.4
395.0
238.3
184.0
105.2
61.7
51.3
85.6
87.5
80.5
146.5
275.1
360.3
454.4
Mm3
454.4
Volume
planned
Mm3
5423.4
5520.5
5428.8
5227.2
4922.9
4598.4
4243.1
3900.2
3425.0
2880.9
2380.2
1950.0
1650.9
1441.1
1397.4
1468.2
1504.4
1550.1
Mm3
actual
Mm3
5249.0
5243.0
5081.0
4857.0
4698.0
4330.0
4070.0
3788.0
3244.0
2650.0
2166.0
1617.0
1175.0
889.0
781.0
694.0
676.0
618.0
Mm3
variance
%
3.2
5.0
6.4
7.1
4.6
5.8
4.1
2.9
5.3
8.0
9.0
17.1
28.8
38.3
44.1
52.7
55.1
60.1
%
Release
planned
m3/sec
360.0
441.0
500.0
545.0
560.0
566.0
566.0
552.0
538.0
524.0
484.0
425.0
354.0
260.0
196.0
172.0
170.0
170.0
Mm3
6481.5
actual
m3/sec
654.3
266.7
620.0
661.0
650.0
650.0
650.0
650.0
650.0
650.0
650.0
645.5
573.2
333.3
150.0
150.0
150.0
150.0
Mm3
7817.9
variance
%
-81.8
39.5
-24.0
-21.3
-16.1
-14.8
-14.8
-17.8
-20.8
-24.0
-34.3
-51.9
-61.9
-28.2
23.5
12.8
11.8
11.8
%
-20.6
Mm3
-254.3
-103.7
-207.4
-307.6
-385.3
-465.2
-537.8
-622.4
-719.2
-828.1
-971.5
-1181.0
-1370.4
-1433.7
-1390.0
-1371.0
-1353.7
-1336.4
Mm3
-1336.4
Diagram of inflow and release in the Chardara water reservoir
Diagram of volumes deviations in the Chardara water reservoir
Note: variance is calculated using the followingformula: 100 * (planned [predicted] - actual) / planned [predicted]