Sl. No Basin Drainage area Name Length (total)
1 Dnieper-Bug Estuary 2,91,400 Dnieper 981 (2201)
2 Dnieper-Bug Estuary 63,700 Southern Buh 806 (806)
3 Black Sea 72,100 Dniester 705 (1362)
4 Don 98,900 Siversky Donets 672 (1053)
5 Dnieper 88,900 Desna 591 (1130)
6 Prypiat 27,010 Horyn 577 (659)
7 Dnieper 14,870 Inhulets 549 (549)
8 Dnieper 22,800 Psel 526 (717)
9 Horyn 13,800 Sluch 451 (451)
10 Prypiat 13,100 Styr 445 (494)
11 Narew [Narva] 73,500 Western Bug 401 (831)
12 Dnieper 15,300 Teteriv 385 (385)
13 Dnieper 19,600 Sula 365 (365)
14 Southern Buh 9,890 Inhul 354 (354)
15 Dnieper 14,700 Vorskla 348 (464)
16 Dnieper 9,800 Oril 346 (346)
17 Dnieper 12,600 Ros 346 (346)
18 Sula 7,030 Udai 327 (327)
19 Samara 13,300 Vovcha 323 (323)
20 Dnieper 22,600 Samara 320 (320)
21 Psel 3,870 Khorol 308 (308)
22 Danube 27,500 Prut 272 (967)
23 Dnieper 1,21,000 Prypiat 261 (761)
24 Prypiat 8,080 Uzh 256 (256)
25 Dniester 3,400 Zbruch 244 (244)
26 Dniester 3,900 Seret 242 (242)
27 Dniester 3,060 Stryi 232 (232)
28 Desna 27,500 Seim 222 (748)
29 Siversky Donets 7,420 Aidar 213 (264)
30 Sea of Azov 5,070 Kalmius 209 (209)
31 Syvash 3,750 Salhir 204 (204)
32 Danube 11,300 Tysa 201 (966)
33 Inhulets 2,670 Vysun 201 (201)
34 Desna 2,950 Oster 199 (201)
35 Siversky Donets 3,740 Luhan 198 (198)
36 Sea of Azov 3,450 Molochna 197 (197)
37 Desna Snov 190 (253)
38 Prypiat 3,150 Stokhid 188 (188)
39 Prypiat 2,800 Turia 184 (184)
40 Siversky Donets Oskil 177 (472)
41 Black Sea Danube 174 (2900)
42 Prypiat Ubort 171 (292)
43 Mius River Krynka 170 (180)
44 Dniester 1,800 Smotrych 168 (168)
45 Hnylyi Tikych 3,510 Hirsky Tikych 167 (167)
46 Synyukha 2,860 Velyka Vys 166 (166)
47 Dniester 2,410 Murafa 163 (163)
48 Dnieper 3,340 Irpin 162 (162)
49 Dnieper 4,540 Tiasmyn 160 (160)
50 Dnieper 4,200 Bazavluk 157 (157)
51 Synyukha 3,150 Hnylyi Tikych 157 (157)
52 Styr 2,250 Ikva 156 (156)
53 Southern Buh 2,120 Chychyklia 156 (156)
54 Black Sea 3,300 Tylihul 154 (154)
55 Siversky Donets Derkul 153 (163)
56 Prypiat 5,440 Stvyha 152 (152)
57 Black Sea 1,860 Velykyi Kuyalnyk 150 (150)
East Coast 58 Mlomboji River
East Coast 59 Mnyera River
Endorheic basins 60 Momba River
Nile basin 61 Mori River
East Coast 62 Msangasi River
East Coast 63 Msangesi River
Congo Basin 64 Msenguse River
East Coast 65 Msinejewe River
East Coast 66 Msolwa River
East Coast 67 Muhuwezi River
East Coast 68 Musa River
East Coast 69 Mwanga River
East Coast 70 Ngarenaro River
East Coast 71 Ngereugere River
East Coast 72 Njombe River
East Coast 73 Njuga River
East Coast 74 Nyumba ya Mungu Reservoir
East Coast 75 Pangani River
Endorheic basins 76 Peninj River
East Coast 77 Rau River
East Coast 78 River Lumi, Tanzania
East Coast 79 Rufiji River
Congo Basin 80 Rufugu River
East Coast 81 Ruhudji River
Zambezi basin 82 Ruhuhu River
East Coast 83 Ruipa River
Endorheic basins 84 Rungwa River
East Coast 85 Ruvu River
East Coast 86 Ruvuma River
Nile basin 87 Ruwana River
Endorheic basins 88 Saisi River
East Coast 89 Sanya River
East Coast 90 Saunyi River
Endorheic basins 91 Sibiti River
East Coast 92 Sigi River
Nile basin 93 Simiyu River
Zambezi basin 94 Songwe River
Endorheic basins 95 Songwe River
East Coast 96 Tani River
Endorheic basins 97 Tarangire River
East Coast 98 Themi River
East Coast 99 Ulanga River (Kilombero)
East Coast 100 Umba River
East Coast 101 Usa River
East Coast 102 Wami River
East Coast 103 Waramu River
East Coast 104 Weruweru River
Endorheic basins 105 Zira River
106 Río de Oro La Plata Basin
107 Río Grande de San Juan La Plata Basin
108 Río Grande de Tarija La Plata Basin
109 Río Negro Atlantic Ocean - Patagonia
110 Rosario River La Plata Basin
111 Saladillo River Interior basins
112 Saladillo Stream La Plata Basin
113 Salado River La Plata Basin
114 Salado River (Colorado River) Interior basins
115 Salado River (Salado del Norte, Juramento River, Pasaje River, Calchaquí River) La Plata Basin
116 Salí River Interior basins
117 Samborombón Bay La Plata Basin
118 Samborombón River La Plata Basin
119 San Antonio River La Plata Basin
120 San Francisco River La Plata Basin
121 San Javier River La Plata Basin
122 San Juan del Oro River (Bolivia) La Plata Basin
123 San Juan River Atlantic Ocean - Patagonia
124 Santa Cruz River Atlantic Ocean - Patagonia
125 Santa Lucía River La Plata Basin
126 Sauce Chico River Atlantic Ocean - Patagonia
127 Sauce Grande River Atlantic Ocean - Patagonia
128 Seco River La Plata Basin
129 Segundo River (Xanaes River) Interior basins
130 Senguerr River Atlantic Ocean - Patagonia
131 Serrano River (Chile) Pacific Ocean
132 Simpson River Pacific Ocean
133 Tapenagá River La Plata Basin
134 Tartagal River Interior basins
135 Tecka River Atlantic Ocean - Patagonia
136 Tercero River (Calamuchita River) La Plata Basin
137 Teuquito River La Plata Basin
138 Traful River Atlantic Ocean - Patagonia
139 Tunuyán River Atlantic Ocean - Patagonia
140 Tupungato River Atlantic Ocean - Patagonia
141 Turbio River Pacific Ocean
142 Urueña River La Plata Basin
143 Uruguay River La Plata Basin
144 Valdivia River (Chile) Pacific Ocean
145 Vizcachas River Pacific Ocean
146 Yelcho River (Chile) Pacific Ocean