| Station name | MRZLO POLJE |
| Station ID | 4042 |
| Station type | Real time data aquisition |
| River | DONJA MREŽNICA |
| Basin | BLACK SEA |
| District | Sava basin |
| Established | 01/09/1946 |
| End of operation | -- |
| Zero Datum (AMSL m) | 113,967 |
| Distance from the river mouth (km) | 5,000 |
| Distance from the river source (km) | -- |
| Catchment area (km2) | 879,000 |
| Measurement type | Info |
| WATER LEVEL | Extremes periods: Years: 1947. - 1958. Zero datum: 114,095 AMSL Minimum: 18. 10. 1947. 14 cm Maximum: 7. 3. 1947. 358 cm Years: 1959. - 2025. Zero datum: 113,967 AMSL Minimum: 31. 10. 2019. -26 cm Maximum: 15. 10. 2015. 470 cm Years in database: 1947-2025 |
| DISCHARGE | Extremes periods: Years: 1947. - 2025. Minimum: 31. 8. 1990. 0,222 m3/s Maximum: 15. 10. 2015. 373,1 m3/s Years in database: 1947-2025 |
| TEMPERATURE | Extremes periods: Years: 1948. - 2025. Minimum: 5. 1. 1954. 0,0 °C Maximum: 4. 7. 1950. 30,0 °C Years in database: 1948 1950-1951 1953-2025 |
| DISCHARGE MEASUREMENTS | Measurements: 192 |
| CROSS SECTIONS | Measurements: 4 |