| River DANUBE, sampling station Rajka |
| Stream flow |
m³/s |
376.4 |
432.3 |
418.3 |
384.0 |
479.0 |
539.3 |
404.4 |
418.3 |
361.3 |
649.8 |
375.1 |
404.3 |
| Water temperature |
°C |
11.9 |
10.8 |
10.2 |
11.3 |
11.0 |
11.3 |
11.4 |
11.3 |
11.5 |
11.0 |
12.4 |
10.8 |
| Acidity |
pH |
8.0 |
8.0 |
8.2 |
8.2 |
8.2 |
8.2 |
.. |
.. |
.. |
.. |
.. |
.. |
| Dissolved oxygen |
mg O2/l |
10.8 |
11.1 |
10.9 |
10.8 |
10.9 |
11.8 |
10.7 |
10.7 |
11.8 |
11.6 |
11.1 |
10.8 |
| Oxygen saturation |
% |
99.5 |
99.1 |
96.2 |
96.6 |
97.3 |
106.6 |
96.7 |
96.5 |
107.4 |
103.3 |
102.4 |
101.3 |
| Biochemical oxygen demand, BOD5 (20°C, 5d) |
mg O2/l |
3.5 |
3.5 |
2.6 |
3.8 |
4.1 |
4.6 |
3.8 |
3.7 |
3.0 |
3.4 |
3.3 |
3.3 |
| Chemical oxygen demand, COD (K2Cr2O7) |
mg O2/l |
9.3 |
9.8 |
10.2 |
8.5 |
8.8 |
10.3 |
9.0 |
7.1 |
8.4 |
8.7 |
6.9 |
6.3 |
| Total suspended solid |
mg/l |
19.1 |
35.0 |
34.4 |
20.2 |
38.1 |
61.1 |
42.3 |
17.3 |
25.0 |
35.6 |
21.8 |
29.9 |
| Chloride |
mg/l |
236.7 |
248.3 |
291.9 |
274.9 |
230.9 |
261.9 |
265.4 |
261.7 |
255.9 |
258.8 |
237.1 |
233.6 |
| Total nitrogen |
µg N/l |
2 433.3 |
2 746.7 |
3 287.5 |
2 909.2 |
2 453.3 |
2 568.3 |
2 354.2 |
2 271.7 |
2 126.7 |
2 125.8 |
2 148.3 |
1 950.8 |
| Nitrates (NO3) |
µg NO3/l |
7 510.1 |
7 635.6 |
9 710.0 |
8 630.0 |
6 852.5 |
8 092.5 |
7 917.5 |
8 311.7 |
7 833.3 |
7 684.2 |
7 241.7 |
6 833.3 |
| Ammonium (NH4) |
µg N/l |
25.8 |
39.2 |
50.0 |
40.0 |
32.3 |
75.8 |
50.0 |
57.5 |
66.7 |
42.5 |
60.0 |
.. |
| Total phosphorus |
µg P/l |
75.0 |
109.2 |
120.0 |
93.3 |
108.3 |
111.7 |
104.2 |
69.2 |
90.0 |
92.5 |
80.0 |
95.8 |
| Orthophosphates |
µg P/l |
32.1 |
45.3 |
37.7 |
30.4 |
48.3 |
127.5 |
115.8 |
120.0 |
104.2 |
105.8 |
110.8 |
91.7 |
| Chlorophyll-a (summer) |
µg /l |
19.1 |
3.4 |
6.4 |
5.5 |
3.4 |
10.0 |
9.9 |
4.3 |
4.5 |
6.5 |
5.8 |
4.2 |
| Coliform-counts |
n/100 ml |
.. |
.. |
.. |
.. |
.. |
.. |
.. |
.. |
.. |
.. |
.. |
.. |
| River DRÁVA, sampling station Drávaszabolcs |
| Stream flow |
m³/s |
483.5 |
627.9 |
633.4 |
442.4 |
528.3 |
638.5 |
714.9 |
459.2 |
269.7 |
359.7 |
446.4 |
259.8 |
| Water temperature |
°C |
13.1 |
12.4 |
12.5 |
11.8 |
12.7 |
12.5 |
13.2 |
15.4 |
12.2 |
12.8 |
15.8 |
12.9 |
| Acidity |
pH |
.. |
.. |
.. |
.. |
8.2 |
8.3 |
.. |
.. |
.. |
.. |
.. |
.. |
| Dissolved oxygen |
mg O2/l |
9.6 |
9.1 |
9.1 |
10.0 |
9.9 |
9.6 |
9.6 |
9.6 |
8.5 |
9.7 |
8.1 |
7.5 |
| Oxygen saturation |
% |
89.8 |
84.5 |
83.4 |
90.3 |
92.1 |
88.9 |
91.2 |
95.7 |
77.7 |
90.2 |
79.8 |
72.5 |
| Biochemical oxygen demand, BOD5 (20°C, 5d) |
mg O2/l |
1.7 |
1.3 |
1.8 |
2.1 |
2.1 |
2.2 |
1.6 |
2.4 |
2.1 |
2.8 |
3.7 |
4.6 |
| Chemical oxygen demand, COD (K2Cr2O7) |
mg O2/l |
8.9 |
9.6 |
10.6 |
7.5 |
9.1 |
8.8 |
8.5 |
9.6 |
13.0 |
9.4 |
14.4 |
15.5 |
| Total suspended solid |
mg/l |
.. |
.. |
.. |
9.3 |
16.6 |
17.5 |
20.8 |
13.9 |
11.2 |
11.7 |
19.0 |
14.1 |
| Chloride |
mg/l |
.. |
.. |
.. |
243.3 |
215.3 |
205.2 |
205.2 |
214.7 |
217.8 |
219.7 |
.. |
.. |
| Total nitrogen |
µg N/l |
1 620.8 |
1 700.8 |
.. |
1 378.7 |
1 332.7 |
1 579.2 |
1 416.3 |
1 364.2 |
1 275.9 |
1 349.2 |
1 376.3 |
1 360.0 |
| Nitrates (NO3) |
µg NO3/l |
4 588.0 |
5 404.3 |
5 650.0 |
4 610.0 |
4 372.7 |
5 079.2 |
4 018.2 |
4 431.6 |
3 883.3 |
4 553.8 |
3 462.5 |
2 725.0 |
| Ammonium (NH4) |
µg N/l |
39.2 |
52.5 |
50.0 |
50.0 |
49.1 |
76.7 |
107.3 |
70.5 |
65.2 |
69.2 |
78.1 |
.. |
| Total phosphorus |
µg P/l |
86.3 |
90.8 |
41.9 |
72.0 |
83.2 |
70.4 |
83.8 |
.. |
.. |
.. |
.. |
.. |
| Orthophosphates |
µg P/l |
36.8 |
37.5 |
72.8 |
128.7 |
46.0 |
113.3 |
115.5 |
108.4 |
173.3 |
101.5 |
328.1 |
121.0 |
| Chlorophyll-a (summer) |
µg /l |
7.0 |
5.2 |
8.0 |
7.2 |
7.8 |
6.9 |
3.6 |
10.5 |
8.2 |
6.9 |
9.1 |
31.8 |
| Coliform-counts |
n/100 ml |
.. |
.. |
.. |
.. |
.. |
.. |
.. |
.. |
.. |
.. |
.. |
.. |
| River TISZA, sampling station Tiszabecs |
| Stream flow |
m³/s |
258.0 |
172.0 |
272.0 |
142.0 |
135.0 |
176.0 |
.. |
.. |
.. |
.. |
.. |
.. |
| Water temperature |
°C |
10.9 |
12.2 |
11.0 |
11.3 |
13.1 |
13.0 |
13.3 |
13.4 |
13.2 |
11.9 |
13.3 |
14.1 |
| Acidity |
pH |
7.6 |
8.0 |
8.0 |
7.9 |
7.8 |
7.8 |
.. |
.. |
.. |
.. |
.. |
.. |
| Dissolved oxygen |
mg O2/l |
11.7 |
10.6 |
11.1 |
12.0 |
.. |
13.7 |
13.6 |
8.9 |
10.4 |
10.8 |
10.5 |
9.9 |
| Oxygen saturation |
% |
99.2 |
97.7 |
99.8 |
100.5 |
.. |
99.0 |
93.5 |
81.9 |
95.2 |
98.4 |
99.2 |
101.6 |
| Biochemical oxygen demand, BOD5 (20°C, 5d) |
mg O2/l |
2.5 |
2.6 |
1.9 |
3.2 |
.. |
.. |
.. |
1.2 |
1.6 |
1.4 |
1.4 |
1.1 |
| Chemical oxygen demand, COD (K2Cr2O7) |
mg O2/l |
18.3 |
14.4 |
11.5 |
10.3 |
11.9 |
9.4 |
5.0 |
11.0 |
5.6 |
5.8 |
5.4 |
5.8 |
| Total suspended solid |
mg/l |
93.9 |
54.6 |
32.9 |
59.7 |
109.3 |
44.8 |
15.3 |
100.0 |
26.6 |
29.4 |
28.8 |
51.5 |
| Chloride |
mg/l |
207.6 |
163.6 |
165.3 |
148.3 |
137.4 |
142.2 |
146.3 |
147.8 |
150.3 |
150.8 |
164.3 |
184.6 |
| Total nitrogen |
µg N/l |
1 880.0 |
793.1 |
850.0 |
1 530.0 |
971.4 |
.. |
.. |
1 000.0 |
880.0 |
872.7 |
1 100.0 |
920.0 |
| Nitrates (NO3) |
µg NO3/l |
2 586.3 |
.. |
.. |
.. |
.. |
.. |
.. |
2 692.3 |
2 830.0 |
2 716.7 |
2 208.3 |
2 100.0 |
| Ammonium (NH4) |
µg N/l |
66.7 |
0.1 |
0.0 |
0.1 |
39.2 |
.. |
.. |
109.2 |
53.0 |
45.0 |
30.0 |
.. |
| Total phosphorus |
µg P/l |
.. |
44.1 |
45.3 |
52.6 |
220.3 |
90.0 |
40.0 |
206.5 |
41.8 |
62.8 |
68.6 |
82.1 |
| Orthophosphates |
µg P/l |
25.0 |
13.0 |
17.6 |
16.8 |
37.3 |
12.3 |
8.5 |
42.7 |
38.2 |
24.2 |
25.9 |
25.6 |
| Chlorophyll-a (summer) |
µg /l |
1.8 |
1.8 |
1.9 |
3.6 |
3.5 |
3.5 |
1.7 |
3.1 |
2.6 |
1.6 |
1.9 |
4.3 |
| Coliform-counts |
n/100 ml |
.. |
.. |
.. |
.. |
.. |
.. |
.. |
.. |
.. |
.. |
.. |
.. |