Figure 1
Figure 2
Figure 3
Figure 4
Physical and chemical characteristics of water in the Pilica River
| Parameter | Unit | 03-10-2005 | 07-11-2005 | 05-12-2005 | 03-07-2006 | 01-08-2006 | 04-09-2006 | 02-10-2006 | 04-12-2006 | 09-07-2007 | 07-08-2007 | 10-09-2007 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Water temperature | °C | 13.7 | 7.5 | 3.7 | 19.4 | 20.4 | 17.3 | 15.3 | 5.4 | 20.6 | 20.8 | 15.0 |
| pH | - | 7.7 | 7.7 | 8.0 | 8.0 | 8.0 | 7.8 | 7.6 | 8.1 | 8.1 | 8.1 | 8.1 |
| Dissolved oxygen | mg O2 l-1 | 9.6 | 10.9 | 12.0 | 8.2 | 7.9 | 8.9 | 9.5 | 10.9 | 9.3 | 8.76 | 8.89 |
| BOD5 | mg O2 l-1 | 3.4 | 4.1 | 3.6 | 2.1 | 5.1 | 2.0 | 2.7 | 2.4 | 3.1 | 5.6 | 1.9 |
| COD-Cr | mg O2 l-1 | 12.0 | 19.7 | 16.0 | 36.0 | 22.0 | 16.9 | 36 | 12.8 | 23.0 | 16.5 | 16.0 |
| Kjeldahl nitrogen | mg N l-1 | 0.67 | 0.45 | 0.46 | 0.71 | 0.64 | 0.35 | 0.28 | 0.63 | 0.79 | 0.24 | 0.55 |
| Nitrates | mg NO3 l-1 | 3.45 | 4.15 | 5.30 | 5.30 | 1.90 | 3.71 | 4.42 | 7.52 | 2.16 | 3.05 | 0.66 |
| Nitrites | mg NO2 l-1 | 0.013 | 0.016 | 0.036 | 0.03 | 0.03 | 0.026 | 0.016 | 0.033 | 0.016 | 0.013 | 0.01 |
| Total nitrogen | mg N l-1 | 1.5 | 1.4 | 1.7 | 1.9 | 1.1 | 1.2 | 1.3 | 2.3 | 1.3 | 0.93 | 1.2 |
| Phosphates | mg PO4 l-1 | 0.09 | 0.08 | 0.07 | 0.11 | 0.12 | 0.13 | 0.15 | 0.09 | 0.12 | 0.12 | 0.11 |
| Total phosphorus | mg P l-1 | 0.03 | 0.05 | 0.05 | 0.08 | 0.05 | 0.07 | 0.06 | 0.07 | 0.13 | 0.05 | 0.05 |
| Conductivity | µS cm-1 | 366.0 | 358.0 | 391.0 | 369.0 | 360.0 | 348.0 | 366.0 | 361.0 | 353.0 | 348.0 | 335.0 |
| Chlorides | mg Cl l-1 | 9.8 | 11.2 | 11.8 | 12.2 | 10.6 | 12.1 | 12.5 | 11.7 | 10.3 | 12.1 | 10.4 |