| Moma | |
|---|---|
 Indigirka Basin | |
 | |
| Location | |
| Country | Russia |
| Physical characteristics | |
| Source | |
| • location | Lake Sisyktyah |
| • elevation | 703 metres (2,306 ft) |
| Mouth | Indigirka |
• coordinates | 66°26′10″N143°10′55″E / 66.43611°N 143.18194°E /66.43611; 143.18194 |
• elevation | 192 metres (630 ft) |
| Length | 406 km (252 mi) |
| Basin size | 30,200 km2 (11,700 sq mi) |
| Basin features | |
| Progression | Indigirka→East Siberian Sea |
TheMoma (Russian:Мома;Yakut:Муома,Muoma) is a river inYakutia inRussia, a right tributary of theIndigirka. The length of the river is 406 kilometres (252 mi), the area of itsdrainage basin is 30,200 square kilometres (11,700 sq mi).[1]
The extinctcinder cone volcanoesBalagan-Tas andUraga-Tas are some of the main features ofMoma Natural Park.[2]
The Moma originates from Lake Sisyktyah on the northern slope of theUlakhan Chistay Range, the highest subrange of theChersky Range.[3] The river flows in the wideintermontane basin separating the Ulakhan Chistay Range from theMoma Range in the north and flows into theIndigirka about 1,086 kilometres (675 mi) from its mouth.[1]
There are black coal deposits in the river basin. The district centre – the village ofKhonuu – is located at the mouth of the river.
The name comes from theEvenki language, “мома” means "wood, timber, tree".[4] This is the name for the rivers with steep, easy to wash banks that crumble together with trees growing on them, cluttering the river bed.
Rain, snow and ice feed the river. It freezes in October, the ice breaks up in late May – early June. In the middle and lower courses the river bed abounds rocky rapids, icing is typical. The average annual water consumption – 377 kilometres (234 mi) from the mouth – is 11.02 cubic metres per second (389 cu ft/s). The river is not navigable.
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