Name Coordinates Length (km) Namesake Notes Abus Vallis 5°32′S 212°42′E / 5.54°S 212.7°E /-5.54; 212.7 58.0 Classical name forHumber River Al-Qahira Vallis 18°13′S 162°30′E / 18.21°S 162.5°E /-18.21; 162.5 555.0 "The Conqueror" (how Mars is called) inArabic Allegheny Vallis 9°06′S 306°00′E / 9.1°S 306.0°E /-9.1; 306.0 200.0 Allegheny River Anio Valles 37°47′N 55°54′E / 37.78°N 55.9°E /37.78; 55.9 36.5 Classical name forAniene River in Italy Apsus Vallis 34°47′N 135°00′E / 34.79°N 135.0°E /34.79; 135.0 120.0 Classical name forSeman River in Albania Arda Valles 20°35′S 327°42′E / 20.59°S 327.7°E /-20.59; 327.7 186.0 Arda River Ares Vallis 10°17′N 334°12′E / 10.29°N 334.2°E /10.29; 334.2 1700.0 Word for "Mars" inGreek :Άρης Landing site of theMars Pathfinder Arnus Vallis 13°57′N 72°30′E / 13.95°N 72.5°E /13.95; 72.5 280.0 Arno River Asopus Vallis 4°21′S 210°18′E / 4.35°S 210.3°E /-4.35; 210.3 33.0 Classical name forBoeotian Asopus river in Greece Athabasca Valles 8°30′N 155°00′E / 8.5°N 155.0°E /8.5; 155.0 285.0 Athabasca River Carved by water fromCerberus Fossae Auqakuh Vallis 30°07′N 60°06′E / 30.12°N 60.1°E /30.12; 60.1 312.0 Word for "Mars" inQuechua Axius Valles 55°42′S 70°06′E / 55.7°S 70.1°E /-55.7; 70.1 349.0 Classical name forVardar River in Greece Bahram Vallis 20°29′N 302°30′E / 20.49°N 302.5°E /20.49; 302.5 246.9 Word for "Mars" in Persian Bashkaus Valles 25°42′S 356°42′E / 25.7°S 356.7°E /-25.7; 356.7 302.0 Bashkaus River Brazos Valles 6°14′S 18°54′E / 6.23°S 18.9°E /-6.23; 18.9 458.0 Brazos River Buvinda Vallis 33°06′N 151°54′E / 33.1°N 151.9°E /33.1; 151.9 119.6 Classical name forRiver Boyne in Ireland Chico Valles 66°46′S 206°30′E / 66.77°S 206.5°E /-66.77; 206.5 450.0 River in Argentina. Clanis Valles 33°12′N 58°24′E / 33.2°N 58.4°E /33.2; 58.4 58.0 Classical name for the riverChiani in Italy Clasia Vallis 33°48′N 56°54′E / 33.8°N 56.9°E /33.8; 56.9 125.0 Classical river in Umbria, Italy Clota Vallis 25°33′S 339°24′E / 25.55°S 339.4°E /-25.55; 339.4 112.0 Ancient name forRiver Clyde in Scotland Columbia Valles 9°25′S 317°05′E / 9.42°S 317.08°E /-9.42; 317.08 94.0 Columbia River Coogoon Valles 17°07′S 338°06′E / 17.12°S 338.1°E /-17.12; 338.1 300.0 River in Australia Cusus Valles 14°20′N 50°30′E / 14.34°N 50.5°E /14.34; 50.5 249.0 Classical name forHron River in Slovakia Daga Vallis 11°59′S 317°37′E / 11.99°S 317.62°E /-11.99; 317.62 70.0 Dagā River in BurmaDao Vallis 38°23′S 87°54′E / 38.38°S 87.9°E /-38.38; 87.9 816.0 Word for "star" inThai Deva Vallis 7°37′S 203°00′E / 7.61°S 203.0°E /-7.61; 203.0 48.0 Classical name forRiver Dee in Scotland Dittaino Valles 1°29′S 293°00′E / 1.48°S 293.0°E /-1.48; 293.0 138.0 Dittaino River Doanus Vallis 63°02′S 334°24′E / 63.04°S 334.4°E /-63.04; 334.4 131.0 Classical river shown in Ptolemy's map; possibly Mekong River Drava Valles 48°41′S 166°18′E / 48.68°S 166.3°E /-48.68; 166.3 150.0 Drava River Drilon Vallis 7°13′N 307°36′E / 7.22°N 307.6°E /7.22; 307.6 94.0 Classical name forDrin River in Albania Dubis Vallis 5°14′S 211°48′E / 5.24°S 211.8°E /-5.24; 211.8 37.0 Classical name forDoubs River in France Dulce Vallis 4°48′S 136°30′E / 4.8°S 136.5°E /-4.8; 136.5 32.5 Dulce River Durius Valles 17°25′S 172°06′E / 17.41°S 172.1°E /-17.41; 172.1 223.0 Classical name forDouro River in Portugal Dzigai Vallis 58°31′S 323°24′E / 58.51°S 323.4°E /-58.51; 323.4 326.0 Word for "valley" inNavajo Elaver Vallis 9°23′S 310°30′E / 9.39°S 310.5°E /-9.39; 310.5 160.0 Classical name forAllier River in France Enipeus Vallis 36°41′N 266°54′E / 36.69°N 266.9°E /36.69; 266.9 357.0 Classical name forEnipeas River in Greece Evros Vallis 12°34′S 13°54′E / 12.56°S 13.9°E /-12.56; 13.9 335.0 Evros River Frento Vallis 49°59′S 345°30′E / 49.98°S 345.5°E /-49.98; 345.5 277.0 Classical name forFortore River in Italy Granicus Valles 29°43′N 131°00′E / 29.72°N 131.0°E /29.72; 131.0 750.0 Ancient name for theBiga Çayı , a river in Turkey Grjotá Valles 15°26′N 165°24′E / 15.43°N 165.4°E /15.43; 165.4 370.0 River in Iceland Harmakhis Vallis 40°29′S 90°24′E / 40.48°S 90.4°E /-40.48; 90.4 475.0 Word for "Mars" inAncient Egyptian Havel Vallis 0°48′N 302°30′E / 0.8°N 302.5°E /0.8; 302.5 240.2 Havel River Hebrus Valles 19°59′N 126°36′E / 19.99°N 126.6°E /19.99; 126.6 317.0 Ancient name for theMaritsa , a river in Greece Her Desher Vallis 25°09′S 312°00′E / 25.15°S 312.0°E /-25.15; 312.0 107.0 Word for "Mars" in Egyptian Arabic Hermus Vallis 5°20′S 212°00′E / 5.34°S 212.0°E /-5.34; 212.0 46.0 Classical name forGediz River in Turkey Himera Valles 21°23′S 337°12′E / 21.38°S 337.2°E /-21.38; 337.2 160.0 Classical name forGrande River in Italy Hrad Vallis 38°23′N 135°18′E / 38.38°N 135.3°E /38.38; 135.3 825.0 Word for "Mars" inArmenian Huallaga Vallis 26°42′S 79°06′E / 26.7°S 79.1°E /-26.7; 79.1 92.5 Huallaga River Huo Hsing Vallis 30°13′N 66°36′E / 30.22°N 66.6°E /30.22; 66.6 318.0 Word for "Mars" inChinese :火星 /huǒxīng Hypanis Valles 9°29′N 313°18′E / 9.49°N 313.3°E /9.49; 313.3 231.0 Classical name forKuban River in Russia Hypsas Vallis 33°42′N 57°54′E / 33.7°N 57.9°E /33.7; 57.9 32.8 Classical name forriver in Sicily Iberus Vallis 21°17′N 152°00′E / 21.28°N 152.0°E /21.28; 152.0 80.2 Classical name forEbro River in Spain Indus Vallis 19°06′N 38°42′E / 19.1°N 38.7°E /19.1; 38.7 307.0 Indus River Isara Valles 5°20′S 213°24′E / 5.34°S 213.4°E /-5.34; 213.4 8.0 Classical name forOise River in France Ituxi Vallis 25°09′N 153°00′E / 25.15°N 153.0°E /25.15; 153.0 62.0 Ituxi River in BrazilKārūn Valles 35°54′S 174°06′E / 35.9°S 174.1°E /-35.9; 174.1 64.0 Karun River Kasei Valles 24°22′N 295°00′E / 24.36°N 295.0°E /24.36; 295.0 1780.0 Word for "Mars" inJapanese : かせい Labou Vallis 8°36′S 205°30′E / 8.6°S 205.5°E /-8.6; 205.5 222.0 Word for "Mars" inFrench Ladon Valles 22°22′S 331°18′E / 22.37°S 331.3°E /-22.37; 331.3 278.0 Ladon River in GreeceLethe Vallis 3°58′N 153°30′E / 3.96°N 153.5°E /3.96; 153.5 225.0 River Lethe in AlaskaLicus Vallis 2°52′S 126°06′E / 2.87°S 126.1°E /-2.87; 126.1 219.1 Ancient name forLech River in Germany and Austria Liris Valles 10°35′S 57°54′E / 10.58°S 57.9°E /-10.58; 57.9 613.0 Ancient name forLiri River in Italy Lobo Vallis 26°56′N 298°48′E / 26.94°N 298.8°E /26.94; 298.8 102.0 River in Ivory Coast Locras Valles 8°36′N 47°42′E / 8.6°N 47.7°E /8.6; 47.7 314.0 Ancient name for river in Corsica mentioned by Ptolemy Loire Valles 18°07′S 343°18′E / 18.11°S 343.3°E /-18.11; 343.3 720.0 Loire River Louros Valles 8°25′S 278°00′E / 8.41°S 278.0°E /-8.41; 278.0 517.0 Louros River Ma'adim Vallis 21°35′S 177°18′E / 21.58°S 177.3°E /-21.58; 177.3 825.0 Word for "Mars" inHebrew :מַאַדִים Mad Vallis 56°12′S 76°06′E / 56.2°S 76.1°E /-56.2; 76.1 524.0 Mad River Maja Valles 12°28′N 301°42′E / 12.46°N 301.7°E /12.46; 301.7 1516.0 Word for "Mars" inNepali Mamers Valles 39°59′N 17°48′E / 39.98°N 17.8°E /39.98; 17.8 1020.0 Word for "Mars" inOscan Mangala Valles 11°28′S 209°00′E / 11.47°S 209.0°E /-11.47; 209.0 828.0 Word for "Mars" inSanskrit Marikh Vallis 19°15′S 3°54′E / 19.25°S 3.9°E /-19.25; 3.9 1280.0 Word for "Mars" inMalaysian Valles Marineris 13°45′S 300°48′E / 13.75°S 300.8°E /-13.75; 300.8 3769.0 Mariner 9 Space programLargest known crevice in theSolar System Marte Vallis 14°50′N 183°30′E / 14.84°N 183.5°E /14.84; 183.5 1185.0 Word for "Mars" in Spanish:marte Matrona Vallis 7°37′S 176°06′E / 7.61°S 176.1°E /-7.61; 176.1 51.0 Classical name forMarne River in France Maumee Valles 19°29′N 306°48′E / 19.49°N 306.8°E /19.49; 306.8 350.0 Maumee River Mawrth Vallis 22°22′N 343°30′E / 22.37°N 343.5°E /22.37; 343.5 636.0 Word for "Mars" inWelsh :Mawrth Minio Vallis 4°15′S 208°12′E / 4.25°S 208.2°E /-4.25; 208.2 88.0 Classical name for river in Italy Moa Valles 35°36′N 305°18′E / 35.6°N 305.3°E /35.6; 305.3 265.0 Moa River Morava Valles 13°17′S 335°33′E / 13.29°S 335.55°E /-13.29; 335.55 325.0 Morava River Mosa Vallis 14°44′S 22°12′E / 14.74°S 22.2°E /-14.74; 22.2 171.0 Meuse River Munda Vallis 5°26′S 213°42′E / 5.44°S 213.7°E /-5.44; 213.7 10.0 Classical name forMondego River in Portugal Naktong Vallis 5°14′N 32°54′E / 5.24°N 32.9°E /5.24; 32.9 494.0 Nakdong River Nanedi Valles 4°51′N 311°00′E / 4.85°N 311.0°E /4.85; 311.0 508.0 Word for "planet" inSesotho Napo Vallis 26°00′S 78°00′E / 26.0°S 78.0°E /-26.0; 78.0 87.5 Napo River Neretva Vallis 18°33′S 77°12′E / 18.55°S 77.2°E /-18.55; 77.2 17 Named after theNeretva River inBosnia and Herzegovina [ 1] [ 2] Nestus Valles 7°07′S 201°24′E / 7.12°S 201.4°E /-7.12; 201.4 33.0 Classical name forNestos River in Macedonia (Greece) Nia Vallis 53°47′S 325°18′E / 53.79°S 325.3°E /-53.79; 325.3 133.0 Classical river name Named used by Lowell for canal Nicer Vallis 7°13′S 201°48′E / 7.22°S 201.8°E /-7.22; 201.8 54.0 Classical name forNeckar River in Germany Niger Vallis 35°05′S 92°12′E / 35.09°S 92.2°E /-35.09; 92.2 333.0 Niger River Nirgal Vallis 28°08′S 318°00′E / 28.13°S 318.0°E /-28.13; 318.0 496.0 Word for "Mars" inBabylonian Ochus Valles 7°07′N 314°54′E / 7.12°N 314.9°E /7.12; 314.9 104.0 Classical name forHari River in Turkmenistan Okavango Valles 38°06′N 9°00′E / 38.1°N 9.0°E /38.1; 9.0 285.1 Okavango River Oltis Valles 23°40′S 338°18′E / 23.66°S 338.3°E /-23.66; 338.3 173.0 Ancient name forLot River in France Osuga Valles 15°08′S 321°24′E / 15.14°S 321.4°E /-15.14; 321.4 185.0 Osuga River Padus Vallis 4°33′S 209°54′E / 4.55°S 209.9°E /-4.55; 209.9 46.0 Classical name forPo River in Italy Pallacopas Vallis 55°00′S 339°00′E / 55.0°S 339.0°E /-55.0; 339.0 660.0 Classical canal inBabylonia Name used by Lowell for a canal Paraná Valles 22°52′S 349°48′E / 22.87°S 349.8°E /-22.87; 349.8 350.0 Paraná River Patapsco Vallis 23°46′N 152°30′E / 23.76°N 152.5°E /23.76; 152.5 153.0 Patapsco River Peace Vallis 4°13′S 137°14′E / 4.21°S 137.23°E /-4.21; 137.23 35.24 "River in British Columbia and Alberta, Canada"[ 3] Pliva Vallis 18°40′S 78°21′E / 18.67°S 78.35°E /-18.67; 78.35 30 Named after thePliva River inBosnia and Herzegovina [ 1] [ 2] Protva Valles 28°55′S 299°24′E / 28.92°S 299.4°E /-28.92; 299.4 260.0 Protva River Rahway Valles 9°18′N 173°48′E / 9.3°N 173.8°E /9.3; 173.8 500.0 Rahway River Ravi Vallis 0°12′S 319°18′E / 0.2°S 319.3°E /-0.2; 319.3 205.5 Ravi River Ravius Valles 46°11′N 248°42′E / 46.18°N 248.7°E /46.18; 248.7 233.0 Classical name for river in Ireland Reull Vallis 42°17′S 104°06′E / 42.28°S 104.1°E /-42.28; 104.1 945.0 Word for "planet" inGaelic Rhabon Valles 21°11′N 268°30′E / 21.18°N 268.5°E /21.18; 268.5 247.0 Classical name forJiu River in Romania Rubicon Valles 44°41′N 243°00′E / 44.68°N 243.0°E /44.68; 243.0 240.0 Ancient name forRubicon River in Italy Runa Vallis 28°26′S 323°12′E / 28.43°S 323.2°E /-28.43; 323.2 39.2 Name proposed by Soviets Sabis Vallis 5°14′S 207°30′E / 5.24°S 207.5°E /-5.24; 207.5 206.0 Classical name forSambre River in France and Belgium Sabrina Vallis 11°05′N 311°00′E / 11.08°N 311.0°E /11.08; 311.0 237.0 Classical name forRiver Severn in Wales and England Sakarya Vallis 5°06′S 137°18′E / 5.10°S 137.3°E /-5.10; 137.3 26.0 Classical name forSakarya River inTurkey Samara Valles 24°51′S 340°54′E / 24.85°S 340.9°E /-24.85; 340.9 615.0 Ancient name forSomme River in France Scamander Vallis 15°50′N 28°30′E / 15.83°N 28.5°E /15.83; 28.5 204.0 Ancient name forKaramenderes River in Turkey Senus Vallis 5°14′S 213°00′E / 5.24°S 213.0°E /-5.24; 213.0 20.0 Classical name for river in Ireland Sepik Vallis 0°53′S 294°12′E / 0.89°S 294.2°E /-0.89; 294.2 56.0 Sepik River Shalbatana Vallis 7°43′N 317°54′E / 7.71°N 317.9°E /7.71; 317.9 963.0 Word for "Mars" inAkkadian Silinka Vallis 8°54′N 331°48′E / 8.9°N 331.8°E /8.9; 331.8 140.0 River in Russia Simud Valles 19°35′N 322°12′E / 19.59°N 322.2°E /19.59; 322.2 945.0 Word for "Mars" inSumerian Stura Vallis 22°40′N 142°24′E / 22.67°N 142.4°E /22.67; 142.4 75.0 Classical name forStura di Demonte river in Italy Subur Vallis 11°40′N 306°48′E / 11.67°N 306.8°E /11.67; 306.8 26.0 Classical name for river in Mauritania Sungari Vallis 40°02′S 88°50′E / 40.03°S 88.84°E /-40.03; 88.84 430.0 Songhua River Surinda Valles 28°55′S 324°54′E / 28.92°S 324.9°E /-28.92; 324.9 95.0 Name proposed by Soviets; found onMars 5 map Surius Vallis 61°32′S 311°36′E / 61.53°S 311.6°E /-61.53; 311.6 570.0 From a river ofColchis Name used by Lowell for canal Tader Valles 48°47′S 207°30′E / 48.78°S 207.5°E /-48.78; 207.5 200.0 Ancient name forSegura River in Spain Tagus Valles 6°43′S 114°24′E / 6.72°S 114.4°E /-6.72; 114.4 155.4 Tagus River Tana Vallis 4°48′S 332°06′E / 4.8°S 332.1°E /-4.8; 332.1 56.5 Tana River Taus Vallis 4°51′S 211°30′E / 4.85°S 211.5°E /-4.85; 211.5 12.6 Classical name for river in Scotland Termes Vallis 11°05′S 202°54′E / 11.08°S 202.9°E /-11.08; 202.9 48.0 Classical name forTormes River in Spain Teviot Vallis 43°23′S 102°06′E / 43.38°S 102.1°E /-43.38; 102.1 140.0 River Teviot Tigre Valles 11°53′S 322°53′E / 11.88°S 322.88°E /-11.88; 322.88 118 Tigre River Tinia Valles 4°39′S 211°00′E / 4.65°S 211.0°E /-4.65; 211.0 18.7 Classical name for river in Italy Tinjar Valles 37°41′N 124°12′E / 37.69°N 124.2°E /37.69; 124.2 425.0 Tinjar River in MalaysiaTinto Vallis 3°58′S 111°24′E / 3.96°S 111.4°E /-3.96; 111.4 146.5 Rio Tinto Tisia Valles 11°46′S 45°42′E / 11.77°S 45.7°E /-11.77; 45.7 399.0 Ancient name forTisza River inHungary Tiu Valles 15°44′N 324°18′E / 15.73°N 324.3°E /15.73; 324.3 1720.0 Word for "Mars" inOld English :Tiu Trebia Valles 32°07′N 150°00′E / 32.11°N 150.0°E /32.11; 150.0 183.0 Classical name forTrebbia River in Italy Tyras Vallis 8°19′N 309°48′E / 8.31°N 309.8°E /8.31; 309.8 68.0 Classical name forDniester River in Ukraine Una Vallis 18°17′S 77°04′E / 18.29°S 77.07°E /-18.29; 77.07 5 Named after theUna River inBosnia and Herzegovina [ 1] [ 2] Uzboi Vallis 29°31′S 322°54′E / 29.52°S 322.9°E /-29.52; 322.9 366.0 Dry riverbed of theUzboy River in Turkmenistan Varus Valles 8°36′S 203°48′E / 8.6°S 203.8°E /-8.6; 203.8 92.0 Classical name forVar River in France Vedra Valles 19°12′N 304°24′E / 19.2°N 304.4°E /19.2; 304.4 115.0 Ancient name for river in Great Britain Verde Vallis 0°29′S 29°48′E / 0.49°S 29.8°E /-0.49; 29.8 95.0 Verde River Vichada Valles 19°24′S 88°06′E / 19.4°S 88.1°E /-19.4; 88.1 430.0 Vichada River Vistula Valles 13°33′N 308°06′E / 13.55°N 308.1°E /13.55; 308.1 190.0 Vistula River in PolandWaikato Vallis 33°12′S 113°49′E / 33.2°S 113.81°E /-33.2; 113.81 230.0 Waikato River Walla Walla Vallis 9°47′S 305°30′E / 9.79°S 305.5°E /-9.79; 305.5 24.0 Walla Walla River Warrego Valles 41°53′S 267°00′E / 41.88°S 267.0°E /-41.88; 267.0 188.0 Warrego River Zarqa Valles 0°10′N 80°49′E / 0.16°N 80.82°E /0.16; 80.82 490 Zarqa River 
