All rivers in Serbia belong to the drainage basins of three seas: Black Sea, Adriatic Sea or Aegean Sea.

The largest in area, Black Sea drainage basin, covers an area of 81,261 km2 or 92% of the territory of Serbia. The entire basin is drained by only one river, the Danube, which flows into the Black Sea. All major rivers in Serbia, like Tisa, Sava, Velika Morava and Drina belong to it.

See list of Major Rivers In Serbia and their length in Km

1. Danube – Length is 2888
2. Tisa – Length is 1,026
3. Sava – Length is 990
4. Great Morava – Length is 493
5. Drina – Length is 487
6. Tamiš – Length is 359
7. Drin – Length is 335
8. South Morava – Length is 295
9. Ibar – Length is 276
10. Begej – Length is 254
11. Lim – Length is 220
12. Nišava – Length is 218
13. Timok – Length is 203
14. Bosut – Length is 186
15. Brzava – Length is 166
16. Mlava – Length is 158
17. Toplica – Length is 130
18. Pek – Length is 129
19. Plazović – Length is 129
20. Pčinja – Length is 128
21. Nera – Length is 124
22. Kolubara – Length is 123
23. Uvac – Length is 119
24. Zlatica – Length is 117
25. Karaš – Length is 110
26. Krivaja – Length is 109
27. Čik – Length is 95
28. Rasina – Length is 92
29. Sitnica – Length is 90
30. Tamnava – Length is 90
31. Kereš – Length is 90
32. Temštica – Length is 86
33. Jablanica – Length is 85
34. Crni Timok – Length is 84
35. Nadela – Length is 84
36. Jasenica – Length is 79
37. Jadar – Length is 79
38. Gruža – Length is 77
39. Lepenac – Length is 75
40. Đetinja – Length is 75
41. Veternica – Length is 75
42. Jerma – Length is 74
43. Lab – Length is 72
44. Rzav (Zlatibor) – Length is 72
45. Pusta reka – Length is 71
46. Mostonga – Length is 70
47. Radika – Length is 70
48. Galacka – Length is 69
49. Vlasina – Length is 68
50. Resava – Length is 65
51. Jegrička – Length is 65
52. Dragovištica – Length is 63
53. Pećka Bistrica – Length is 62
54. Klina – Length is 62
55. Rzav (Golija) – Length is 61
56. Studenica – Length is 60
57. Raška – Length is 60
58. Sokobanjska Moravica – Length is 58
59. Ub – Length is 57
60. Lugomir – Length is 57
61. Jerez – Length is 56
62. Jasenička reka – Length is 55
63. Dečanska Bistrica – Length is 53
64. Jarčina – Length is 53
65. Budovar – Length is 52
66. Drenica – Length is 51
67. Ralja – Length is 51
68. Erenik – Length is 51
69. Porečka reka – Length is 50
70. Trgoviški Timok – Length is 50

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Major sub-rivers In Serbia and their length in Km

1. West Morava – Length is 308
2. White Drin – Length is 175
3. Beli Timok – Length is 115
4. Golijska Moravica – Length is 98
5. Visočica – Length is 71
6. Svrljiški Timok – Length is 64