VICAIRE - Module 2

Qualitative Hydrology - Chapter 9

 

exercise 1

You have monitoring data, given in Table 1 for measured flow in m3/s and phosphorus concentration in mg/L in one Water Quality Monitoring Point 053, situated near town of Sevlievo - Rositza river in Bulgaria for the period 1990-1995.

Analyze the monitoring data and prepare some conclusions!

Table 1 Water Quality Monitoring Point 053

Date

Flow
m3/s

Phosphorus
mg/l
13/06/90
0.98
0.41
11/12/90
2.83
0.07
07/01/91
1.37
1
05/03/91
1.99
0.56
12/06/91
14.14
0.58
04/09/91
2.88
0.11
12/12/91
1.25
0.25
19/05/92
3.58
0.8
10/09/92
0.46
0.1
08/12/92
0.77
0.012
05/02/93
1.03
0.04
28/02/93
0.86
0.04
18/03/93
2.07
0.027
06/04/93
3.58
0.042
11/05/93
44.37
0.24
01/06/93
6.36
0.12
30/07/93
0.30
1.42
24/08/93
0.22
0.084
14/09/93
0.20
0.96
19/10/93
0.15
0.7
16/11/93
0.52
0.27
15/12/93
1.26
0.178
15/03/94
1.06
0.73
20/04/94
4.74
0.085
04/05/94
6.34
0.072
23/08/94
0.51
0.11
06/09/94
0.16
0.21
02/12/94
2.07
0.1
27/02/95
8.06
0.07
14/03/95
11.99
0.04
26/04/95
11.99
0.06
12/05/95
11.37
0.05
13/06/95
5.93
0.04
11/07/95
40.20
0.11
08/08/95
2.30
0.06
01/09/95
6.71
0.04
17/10/95
0.88
0.18
12/12/95
4.42
0.111

 

exercise 2

Calculate, receive and plot the monthly phosphorus loads of the river Rositza, needed for the calibration of the BISTRA model on the base of the monitoring data from Table 2.

Table 2

Date

Flow
m3/s

Flow
m3/day

Flow
l/day

Phosphorus
mg/L

Phosphorus
kg/day
13/06/90
0.98
84672
84672000
0.41
35
11/12/90
2.83
244166
244166400
0.07
17
07/01/91
1.37
118627
118627200
1
119
05/03/91
1.99
171850
171849600
0.56
96
12/06/91
14.14
1221782
1221782400
0.58
709
04/09/91
2.88
248746
248745600
0.11
27
12/12/91
1.25
107741
107740800
0.25
27
19/05/92
3.58
309226
309225600
0.8
247
10/09/92
0.46
39312
39312000
0.1
4
08/12/92
0.77
66874
66873600
0.012
1
05/02/93
1.03
88992
88992000
0.04
4
28/02/93
0.86
73958
73958400
0.04
3
18/03/93
2.07
179107
179107200
0.027
5
06/04/93
3.58
309226
309225600
0.042
13
11/05/93
44.37
3833395
3833395200
0.24
920
01/06/93
6.36
549850
549849600
0.12
66
30/07/93
0.30
25488
25488000
1.42
36
24/08/93
0.22
19008
19008000
0.084
2
14/09/93
0.20
16934
16934400
0.96
16
19/10/93
0.15
13133
13132800
0.7
9
16/11/93
0.52
45014
45014400
0.27
12
15/12/93
1.26
109123
109123200
0.178
19
15/03/94
1.06
91670
91670400
0.73
67
20/04/94
4.74
409450
409449600
0.085
35
04/05/94
6.34
547603
547603200
0.072
39
23/08/94
0.51
43632
43632000
0.11
5
06/09/94
0.16
13997
13996800
0.21
3
02/12/94
2.07
179107
179107200
0.1
18
27/02/95
8.06
695952
695952000
0.07
49
14/03/95
11.99
1036109
1036108800
0.04
41
26/04/95
11.99
1036109
1036108800
0.06
62
12/05/95
11.37
982714
982713600
0.05
49
13/06/95
5.93
512266
512265600
0.04
20
11/07/95
40.20
3473280
3473280000
0.11
382
08/08/95
2.30
198979
198979200
0.06
12
01/09/95
6.71
579744
579744000
0.04
23
17/10/95
0.88
75946
75945600
0.18
14
12/12/95
4.42
381456
381456000
0.111
42

 

Solutions