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18-981: The Yudoma flows in Eastern Siberia in the Yudoma-Maya Highlands near the Okhotsk Coast . Its northern headwaters are in the Suntar-Khayata Range . To the east is the Yudoma Range and then the Okhota , to the south the Maya and to the northwest, the Allakh-Yun , another tributary of the Aldan. It is formed at the confluence of the 55 km (34 mi) long Nitkan from the left and the 43 km (27 mi) long Avliya from

36-405: A crude canal which was dry at low water. In 1737 Stepan Krasheninnikov took three days to go downstream from Yudoma Cross to the Maya, whereas it took five to six weeks to make the same trip upstream. Yudoma-Maya Highlands The Yudoma-Maya Highlands (Russian: Юдомо-Майское нагорье , romanized : Yudomo-Maiskoye Nagorye ; Yakut : Юдома-Маайа хаптал хайалаах сиринэн ) are

54-865: A mountainous area in the Sakha Republic and Khabarovsk Krai , Far Eastern Federal District , Russia. The settlement of Allakh-Yun is located in the area of the highlands on the right bank of the Allakh-Yun River . The area of the Yudoma-Maya and the Aldan highlands, between the basins of the Aldan River and the Yudoma , was uncharted territory well until the 1930s. It was first surveyed in 1934 by geologist Yuri Bilibin (1901—1952) together with mining engineer Evgeny Bobin (1897—1941) in

72-693: Is a river in Khabarovsk Krai and Sakha , Russia . It is a right tributary of the Aldan of the Lena basin . The length of the river is 1,053 kilometres (654 mi). The area of its basin 171,000 square kilometres (66,000 sq mi). The Maya was part of the river route from Yakutsk to the Okhotsk Coast . From the Mati either the Lama Portage or the Alanchak Portage led to

90-530: Is reached by a 480-kilometre (300 mi) dirt road running south from Eldikan on the Aldan River. The Yudoma was one of the river routes to the Okhotsk Coast. Because of its rapids and swift current there was a great deal of tracking (see portage ). Rapids and cataracts blocked the larger boats that were used on the Maya. Some 80 kilometres (50 mi) below Yudoma Cross a cataract was bypassed by

108-511: The Ulya and the coast. Near the southernmost point was the settlement of Nelkan from which a track led over the mountains to Ayan . From Ust-Maya there was a horse-track to Yakutsk. Eastbound boats that reached Ust-Maya from the Lena were replaced by smaller boats to continue up the Maya. Its course is approximately V-shaped. The upper Maya runs about 201 kilometres (125 mi) southwest parallel to

126-429: The Yudoma from the east and joins the Aldan at Ust-Maya . The Maya freezes up in late October and stays under the ice until May. The river is navigable up to 500 kilometres (310 mi) upstream from its mouth. The Yudoma-Maya Highlands are located in the basin of the Maya. The 765 km (475 mi) long Yudoma from the right is one of the biggest tributaries of the Maya. Other important tributaries are

144-477: The 421 km (262 mi) long Maymakan , the 246 km (153 mi) long Batomga and the 233 km (145 mi) long Severny Uy from the left, as well as the 171 km (106 mi) long Ingili from the right. [REDACTED] This Sakha Republic location article is a stub . You can help Misplaced Pages by expanding it . This Khabarovsk Krai location article is a stub . You can help Misplaced Pages by expanding it . This article related to

162-532: The Yudoma Range and then flows southwest about 325 kilometres (202 mi) (straight-line distance) to its mouth on the Maya. It starts about 30 kilometres (19 mi) south of Mus-Khaya Mountain , the highest point in the Suntar-Khayata Range. The main tributaries of the Yudoma are the 212 kilometres (132 mi) long Kirbii (Кирбии) and the 109 kilometres (68 mi) long Kyala (Кяла) from

180-437: The average July temperature in the valleys does not exceed 18 °C (64 °F). Precipitation is between 250 millimeters (9.8 in) and 800 millimeters (31 in) per year. Most of the yearly precipitation falls in the second half of summer in the form of rain. Large swathes of the highlands are covered by taiga up to elevations between 1,100 metres (3,600 ft) and 1,300 metres (4,300 ft). The areas adjacent to

198-587: The coast between the Dzhugdzhur mountains and the Yudoma Plateau . About 80 kilometres (50 mi) from its source the 167 km (104 mi) long Mati river joins its right bank from the south. The Maya flows west for perhaps 64 kilometres (40 mi) and receives the Maimakan River from the southwest. From here the river flows basically north about 320 kilometres (200 mi), receives

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216-523: The course of an expedition sent by the government of the USSR . Bilibin and Bobin made a thorough topographic survey of the mountainous regions leading separate research parties. They described the highlands as "a disordered jumble of round hills with soft outlines". The Yudoma-Maya Highlands lie at the southern end of the Sakha Republic and the western limits of Khabarovsk Krai. They are named after

234-509: The left, as well as the 135 kilometres (84 mi) long Akachan from the right. The river is fed by snowmelt and summer rains. It is frozen from mid-October to late May. The area is largely unsettled and there is hardly any infrastructure. The only significant settlement is Yugoryonok . At the 'corner' of the river origin began the long Okhotsk Portage which ran east-southeast to the Okhota River. About 50 kilometres (31 mi) south

252-603: The northern end of the Dzhugdzhur Range . The average heights range between 800 metres (2,600 ft) and 1,200 metres (3,900 ft), the heights increasing towards the south. The highest point is 2,213 meters (7,260 ft) high Shpil Tarbagannakh (Шпиль-Тарбаганнах). The highlands have a harsh continental climate . January temperatures range from −34 °C (−29 °F) to −43 °C (−45 °F). The coldest temperatures recorded reach between −58 °C (−72 °F) and −62 °C (−80 °F). In summer

270-639: The right. At its mouth the minimum water flow is 3.7 cubic metres per second (130 cu ft/s) in March, and the maximum is 1,081 cubic metres per second (38,200 cu ft/s) in June. At its mouth it is 300 metres (980 ft) wide and 4 metres (13 ft) deep. The lower 270 kilometres (170 mi) are considered navigable. The Yudoma limits the southern end of the Ulakhan-Bom range. The river flows south for about 200 kilometres (120 mi) west of

288-707: The upper basin of the Maya River , a tributary of the Aldan , and the Yudoma , one of the biggest tributaries of the Maya, The highland area is bound to the west by the Skalisty Range and the Sette-Daban subranges of the Verkhoyansk Range , and to the north by the Suntar-Khayata Range . The highlands reach the valley of the Okhota River to the east, and to the south they are limited by

306-419: The valleys are covered with larch and pine forests, especially in the southern region. Above 500 metres (1,600 ft) there is spruce and birch taiga up to a height of 1,000 metres (3,300 ft). In the northern parts of the highlands there are thickets of dwarf cedar and mountain tundra above 1,200 metres (3,900 ft). Maya River The Maya ( Russian : Мая ; Yakut : Маайа , Maaya )

324-539: Was Yudoma Cross from which the Yudoma Portage led southeast to the Urak river and a longer horse track led to Urak Landing. North of Yudoma Cross a horse track led to Yakutsk . Near here the border between the Sakha Republic and Khabarovsk Krai joins the Yudoma and follows it to its mouth. About 30 kilometres (19 mi) west of Yudoma Cross (straight-line distance) is the gold-extracting town of Yugoryonok which

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