The Largest World Rivers Award (LWRA) is dedicated to the 10th Anniversary of the European PSK Club. It has been sponsored by Radioarena UK Ltd and devised by the European PSK Club on 1st May, 2016 for two-way PSK contacts with amateur radio stations operating from banks of the largest world rivers longer than 1000 kilometres as per our table listed below. Contacted LWRA expeditions (stations) don't need to be members of the European PSK Club. This award series has no time or date restrictions.

LWRA 25, LWRA 50, LWRA 75, LWRA 100, LWRA 125 and LWRA 150 awards may be claimed by any licensed radio amateur, club station or DMS/SWL eligible under the EPC Awards General Rules who can produce evidence of having contacted 25, 50, 75, 100, 125 and 150 different rivers respectively at the time of application.

Please make sure that the «COMMENT» field in your ADIF log contains the contacted station's LWRA designator as per the list starting with a hash mark. For example ‒ if you made a QSO with a station working from Volga (Russia) your ADIF comment field should be #LWRA 017). This is a mandatory requirement to make able the manager's software to check your application correctly.

The operating station is counted for LRWA if its physical location (antenna and radio) is not farther than 1000 metres from the river channel

There are many factors, such as the source, the identification or the definition of the mouth, and the scale of measurement of the river length between source and mouth, that determine the precise meaning of river length. As a result, the length measurements of many rivers are only approximations.

For the purpose of determining maximum length a river's true source is considered to be the source of whichever tributary is farthest from the mouth. This tributary may or may not have the same name as the main stem river.

Furthermore, it is sometimes hard to state exactly where a river begins, especially rivers that are formed by ephemeral streams, swamps, or changing lakes. In this article, length means the length of the longest continuous river channel in a given river system, regardless of name.

The source of some rivers starting in farming areas can be difficult to determine, if the river is formed by the confluence of several farm field drainage ditches which only contain water after rain.

Similarly, in rivers starting in a chalk area, such as the Chilterns in south England, the length of the upper course which is dry varies with how high the water table is, which varies with the weather.

Even when detailed maps are available, the length measurement is not always clear. A river may have multiple channels, or anabranches. The length may depend on whether the center or the edge of the river is measured. It may not be clear how to measure the length through a lake. Seasonal and annual changes may alter both rivers and lakes. Other factors that can change the length of a river include cycles of erosion and flooding, dams, levees, and channelization. In addition, the length of meanders can change significantly over time due to natural or artificial cutoffs, when a new channel cuts across a narrow strip of land, bypassing a large river bend. For example, due to 18 cutoffs created between 1766 and 1885 the length of the Mississippi River from Cairo, Illinois, to New Orleans, Louisiana, was reduced by 351 km.

These points make it difficult, if not impossible, to get an accurate measurement of the length of a river. The varying accuracy and precision also makes it difficult to make length comparisons between different rivers without a degree of uncertainty.


One should take the aforementioned discussion into account when using the data in the following table. For most rivers, different sources provide conflicting information on the length of a river system. The information in different sources is between parentheses.

Nr River Length (km) Outflow Countries in the drainage basin
001 Nile ‒ Kagera 6,853 Mediterranean

Ethiopia, Eritrea, Sudan, Uganda, Tanzania, Kenya, Rwanda, Burundi, Egypt, Demo- cratic Republic of the Congo, South Sudan

002 Amazon ‒ Ucayali ‒ Apurímac 6,992 Atlantic Ocean Brazil, Peru, Bolivia, Colombia, Ecuador, Venezuela, Guyana
003 Yangtze (Chang Jiang; Long River) 6,300 East China Sea China
004 Mississippi‒Missouri‒Jefferson 6,275 Gulf of Mexico United States (98.5%), Canada (1.5%)
005 Yenisei‒Angara‒Selenge 5,539 Kara Sea Russia (97%), Mongolia (2.9%)
006 Yellow River (Huang He) 5,464 Bohai Sea China
007 Ob‒Irtysh 5,410 Gulf of Ob Russia, Kazakhstan, China, Mongolia
008 Paraná ‒ Río de la Plata 4,880 Río de la Plata Brazil (46.7%), Argentina (27.7%), Paraguay (13.5%), Bolivia (8.3%), Uruguay (3.8%)
009 Congo‒Chambeshi (Zaïre) 4,700 Atlantic Ocean

Democratic Republic of the Congo, Central African Republic, Angola, Republic of the Congo, Tanzania, Cameroon, Zambia, Burundi, Rwanda

010 Amur‒Argun (Heilong Jiang) 4,444 Sea of Okhotsk Russia, China, Mongolia
011 Lena 4,400 Laptev Sea Russia
012 Mekong (Lancang Jiang) 4,350 South China Sea China, Myanmar, Laos, Thailand, Cambodia, Vietnam
013 Mackenzie‒Slave‒Peace‒Finlay 4,241 Beaufort Sea Canada
014 Niger 4,200 Gulf of Guinea

Nigeria (26.6%), Mali (25.6%), Niger(23.6%), Algeria (7.6%), Guinea(4.5%), Cameroon (4.2%), Burkina Faso (3.9%), Côte d'Ivoire, Benin, Chad

015 Murray‒Darling 3,672 Southern Ocean Australia
016 Tocantins‒Araguaia 3,650 Atlantic Ocean, Amazon Brazil
017 Volga 3,645 Caspian Sea Russia
018 Shatt al-Arab ‒ Euphrates 3,596 Persian Gulf Iraq (60.5%), Turkey (24.8%), Syria (14.7%)
019 Madeira‒Mamoré‒Grande‒Caine‒Rocha 3,380 Amazon Brazil, Bolivia, Peru
020 Purús 3,211 Amazon Brazil, Peru
021 Yukon 3,185 Bering Sea United States (59.8%), Canada (40.2%)
022 Indus 3,180 Arabian Sea Pakistan (93%), India, China
023 São Francisco 3,180 Atlantic Ocean Brazil
024 Syr Darya ‒ Naryn 3,078 Aral Sea Kazakhstan, Kyrgyzstan, Uzbekistan, Tajikistan


Salween (Nu Jiang) 3,060 Andaman Sea China (52.4%), Myanmar (43.9%), Thailand (3.7%)
026 Saint Lawrence ‒ Great Lakes 3,058 Gulf of Saint Lawrence Canada (52.1%), United States (47.9%)
027 Rio Grande 3,057 Gulf of Mexico United States (52.1%), Mexico (47.9%)
028 Lower Tunguska 2,989 Yenisei Russia
029 Brahmaputra‒Tsangpo 2,948 Ganges India (58.0%), China (19.7%), Nepal (9.0%), Bangladesh (6.6%), Disputed India/China

(4.2%), Bhutan (2.4%)

Danube‒Breg (Donau, Dunãre, Duna, Dunav, Dunaj)

2,888 Black Sea Romania (28.9%), Hungary (11.7%), Austria (10.3%), Serbia (10.3%), Germany

(7.5%), Slovakia (5.8%), Bulgaria (5.2%), Croatia (4.5%),
031 Zambezi (Zambesi) 2,693 Mozambique Channel

Zambia (41.6%), Angola (18.4%),Zimbabwe (15.6%), Mozambique(11.8%), Malawi (8.0%), Tanzania(2.0%), Namibia, Botswana

032 Vilyuy 2,650 Lena Russia
033 Araguaia 2,627 Tocantins Brazil
034 Ganges‒Hooghly‒Padma (Ganga) 2,620 Bay of Bengal India, Bangladesh, Nepal, China
035 Amu Darya -- Panj 2,620 Aral Sea Uzbekistan, Turkmenistan, Tajikistan, Afghanistan
036 Japurá (Rio Yapurá) 2,615 Amazon Brazil, Colombia
037 Nelson‒Saskatchewan 2,570 Hudson Bay Canada, United States
038 Paraguay( Rio Paraguay) 2,549 Paraná Brazil, Paraguay, Bolivia, Argentina
039 Kolyma 2,513 East Siberian Sea Russia
040 Pilcomayo 2,500 Paraguay Paraguay, Argentina, Bolivia
041 Upper Ob -- Katun 2,490 Ob Russia
042 Ishim 2,450 Irtysh Kazakhstan, Russia
043 Juruá 2,410 Amazon Peru, Brazil
044 Ural 2,428 Caspian Sea Russia, Kazakhstan
045 Arkansas 2,348 Mississippi United States
046 Colorado (Western U.S.) 2,333 Gulf of California United States, Mexico
047 Olenyok 2,292 Laptev Sea Russia
048 Dnieper 2,287 Black Sea Russia, Belarus, Ukraine
049 Aldan 2,273 Lena Russia
050 Ubangi‒Uele 2,270 Congo Democratic Republic of the Congo, Central African Republic, Republic of Congo
051 Negro 2,250 Amazon Brazil, Venezuela, Colombia
052 Columbia 2,250 Pacific Ocean United States, Canada
053 Pearl ‒ Zhu Jiang 2,200 South China Sea China (98.5%), Vietnam (1.5%)
054 Red (USA) 2,188 Mississippi United States
055 Ayeyarwady (Irrawaddy) 2,170 Andaman Sea Myanmar
056 Kasai 2,153 Congo Angola, Democratic Republic of the Congo
057 Ohio‒Allegheny 2,102 Mississippi United States
058 Orinoco 2,101 Atlantic Ocean Venezuela, Colombia, Guyana
059 Tarim 2,100 Lop Nur P. R. China
060 Xingu 2,100 Amazon Brazil
061 Orange 2,092 Atlantic Ocean South Africa, Namibia, Botswana, Lesotho
062 Northern Salado 2,010 Paraná Argentina
063 Vitim 1,978 Lena Russia
064 Tigris 1,950 Shatt al-Arab Turkey, Iraq, Syria
065 Songhua 1,927 Amur P. R. China
066 Tapajós 1,900 Amazon Brazil
067 Don 1,870 Sea of Azov Russia, Ukraine
068 Stony Tunguska 1,865 Yenisei Russia
069 Pechora 1,809 Barents Sea Russia
070 Kama 1,805 Volga Russia
071 Limpopo 1,800 Indian Ocean Mozambique, Zimbabwe, South Africa, Botswana
072 Guaporé (Itenez) 1,749 Mamoré Brazil, Bolivia
073 Indigirka 1,726 East Siberian Sea Russia
074 Snake 1,670 Columbia United States
075 Senegal 1,641 Atlantic Ocean Guinea, Senegal, Mali, Mauritania
076 Uruguay 1,610 Atlantic Ocean Uruguay, Argentina, Brazil
077 Murrumbidgee River 1,600 Murray River Australia
078 Blue Nile 1,600 Nile Ethiopia, Sudan
079 Churchill 1,600 Hudson Bay Canada
080 Khatanga 1,600 Laptev Sea Russia
081 Okavango 1,600 Okavango Delta Namibia, Angola, Botswana
082 Volta 1,600 Gulf of Guinea Ghana, Burkina Faso, Togo, Côte d'Ivoire, Benin
083 Beni 1,599 Madeira Bolivia
084 Platte 1,594 Missouri United States
085 Tobol 1,591 Irtysh Kazakhstan, Russia
086 Jubba‒Shebelle 1,580 Indian Ocean Ethiopia, Somalia
087 Içá (Putumayo) 1,575 Amazon Brazil, Peru, Colombia, Ecuador
088 Magdalena 1,550 Caribbean Colombia
089 Han 1,532 Yangstze P. R. China
090 Kura 1,515 Caspian Sea Turkey, Georgia, Azerbaijan
091 Oka 1,500 Volga Russia
092 Guaviare 1,497 Orinoco Colombia
093 Pecos 1,490 Rio Grande United States
094 Upper Yenisei -- Little Yenisei (Kaa-Hem) 1,480 Yenisei Russia, Mongolia
095 Godavari 1,465 Bay of Bengal India
096 Colorado (Texas) 1,438 Gulf of Mexico United States
097 Río Grande (Guapay) 1,438 Ichilo Bolivia
098 Oder-Warta 1,425 Baltic Sea Poland, Germany
099 Belaya 1,420 Kama Russia
100 Cooper‒Barcoo 1,420 Lake Eyre Australia
101 Maraûón 1,415 Amazon Peru
102 Dniester 1,411 Black Sea Ukraine, Moldova
103 Benue 1,400 Niger Cameroon, Nigeria
104 Ili (Yili) 1,400 Lake Balkhash P. R. China, Kazakhstan
105 Warburton‒Georgina 1,400 Lake Eyre Australia
106 Sutlej 1,372 Chenab China, India, Pakistan
107 Yamuna 1,370 Ganges India
108 Vyatka 1,370 Kama Russia
109 Fraser 1,368 Pacific Ocean Canada
110 Mtkvari (Kura) 1,364 Caspian Sea Azerbaijan, Georgia, Armenia, Turkey, Iran
111 Grande 1,360 Paraná Brazil
112 Brazos 1,352 Gulf of Mexico United States
113 Cauca 1,350 Magdalena Colombia
114 Liao 1,345 Bohai Sea P. R. China
115 Yalong 1,323 Yangtze P. R. China
116 Iguaçu 1,320 Paraná Brazil, Argentina
117 Olyokma 1,320 Lena Russia
118 Northern Dvina ‒ Sukhona 1,302 White Sea Russia
119 Krishna 1,300 Bay of Bengal India
120 Iriri 1,300 Xingu Brazil
121 Narmada 1,289 Arabian Sea India


1,280 Congo Democratic Republic of the Congo
123 Ottawa 1,271 Saint Lawrence Canada
124 Lerma - Rio Grande de Santiago 1,270 Pacific Mexico
125 Elbe‒Vltava 1,252 North Sea Germany, Czech Republic
126 Zeya 1,242 Amur Russia
127 Juruena 1,240 Tapajós Brazil
128 Upper Mississippi 1,236 Mississippi United States
129 Rhine 1,233 North Sea

Germany, France, Switzerland, Netherlands, Austria, Liechtenstein, Italy (minimal), Belgium, Luxembourg

130 Athabasca 1,231 Mackenzie Canada
131 Canadian 1,223 Arkansas United States
132 North Saskatchewan 1,220 Saskatchewan Canada
133 Vaal 1,210 Orange South Africa
134 Shire 1,200 Zambezi Mozambique, Malawi
135 Nen (Nonni) 1,190 Songhua P. R. China
136 Kızıl River 1,182 Black Sea Turkey
137 Green 1,175 Colorado (Western U.S.) United States
138 Milk 1,173 Missouri United States, Canada
139 Chindwin 1,158 Ayeyarwady Myanmar
140 Sankuru 1,150 Kasai Democratic Republic of the Congo
141 Wu 1,150 Yangtze River China
142 Red (Asia) 1,149 Gulf of Tonkin China, Vietnam
143 James (Dakotas) 1,143 Missouri United States
144 Kapuas 1,143 South China Sea Indonesia
145 Desna 1,130 Dnieper Russia, Belarus, Ukraine
146 Helmand 1,130 Hamun-i-Helmand Afghanistan, Iran
147 Madre de Dios 1,130 Beni Peru, Bolivia
148 Tietê 1,130 Paraná Brazil
149 Vychegda 1,130 Northern Dvina Russia
150 Sepik 1,126 Pacific Ocean Papua New Guinea, Indonesia
151 Cimarron 1,123 Arkansas United States
152 Anadyr 1,120 Gulf of Anadyr Russia
153 Paraíba do Sul 1,120 Atlantic Ocean Brazil
154 Jialing River 1,119 Yangtze P. R. China
155 Liard 1,115 Mackenzie Canada
156 Cumberland 1,105 Mississippi United States
157 White 1,102 Mississippi United States
158 Huallaga 1,100 Maraûón Peru
159 Kwango 1,100 Kasai Angola, Democratic Republic of the Congo
160 Draa 1,100 Atlantic Morocco
161 Gambia 1,094 Atlantic The Gambia, Senegal, Guinea
162 Chenab 1,086 Indus India, Pakistan
163 Yellowstone 1,080 Missouri United States
164 Ghaghara 1,080 Ganges India, Nepal, China
165 Huai River 1,078 Yangtze River China
166 Aras 1,072 Kura Turkey, Armenia, Azerbaijan, Iran
167 Chu River 1,067 none Kyrgyzstan, Kazakhstan
168 Seversky Donets 1,078 Don Russia, Ukraine
169 Bermejo 1,050 Paraguay Argentina, Bolivia
170 Fly 1,050 Gulf of Papua Papua New Guinea, Indonesia
171 Kuskokwim 1,050 Bering Sea United States
172 Tennessee 1,049 Ohio United States
173 Vistula 1,047 Baltic Sea Poland
174 Aruwimi 1,030 Congo River Democratic Republic of the Congo
175 Daugava 1,020 Gulf of Riga Latvia, Belarus, Russia
176 Gila 1,015 Colorado (Western U.S.) United States
177 Loire 1,012 Atlantic Ocean France
178 Essequibo 1,010 Atlantic Ocean Guyana
179 Khoper 1,010 Don Russia
180 Tagus (Tajo/Tejo) 1,006 Atlantic Ocean Spain, Portugal

Unicom Radio is an official sponsor of the European PSK Club. We source and distribute radio communication equipment, antennas and related accessories. Our product range encompasses a full range of radio related products suited for the hobby, leisure and professional user. We ship worldwide! Shopping online has never been easier. In today's world you can find just about anything online if you know where to look. We have a lot of exciting things in our new store for you in the coming days. Look for more categories to be popping up for your shopping convenience, as well as a few other additions that will help you find what you are looking for online. We hope that you will have a great shopping experience with us! Please visit our website at