Bolshaya Ercha
{{Short description|River in Yakutia, Russia}}
{{Infobox river
| name = Bolshaya Ercha
| other_name = Большая Эрча
| image = Bolshaya Ercha ONC C-7.jpg
| image_caption = Bolshaya Ercha course ONC map section
| source1_location = Ulakhan-Sis
| source1_coordinates = {{coord|69|39|00|N|150|13|13|E|}}
| source1_elevation =
| mouth = Indigirka
| mouth_location =
| mouth_coordinates = {{coord|69|34|05|N|147|38|10|E|source:wikidata|display=it}}
| mouth_elevation = {{convert|51|m}}
| progression = Indigirka → Laptev Sea
| subdivision_type1 = Country
| subdivision_name1 = Russia
| length = {{convert|252|km|mi|abbr=on}}
| discharge1_avg =
| basin_size = {{convert|4290|km2|sqmi|abbr=on}}
| pushpin_map = Russia Sakha Republic
| pushpin_map_size =
| pushpin_map_caption= Mouth location in Yakutia, Russia
}}
The Bolshaya Ercha ({{langx|ru|Большая Эрча}}) is a river in the Sakha Republic (Yakutia), Russia. It is a tributary of the Indigirka. The river has a length of {{convert|252|km|mi}} and a drainage basin area of {{convert|4290|km2|mi2}}.{{GVR|262394|Река Бол. Эрча}}
The river flows north of the Arctic Circle, across desolate territories of the Allaikhovsky District.
Course
The Bolshaya Ercha is a right tributary of the Indigirka. It has its sources in the northern slopes of the Ulakhan-Sis range. The river flows first northwestwards in its uppermost section, and then in a roughly western / WSW direction skirting the Kondakov Plateau which rises to the north. In its last stretch the river descends into the Indigirka floodplain among numerous lakes where it meanders strongly, forming oxbow lakes. Finally the Bolshaya Ercha joins the Indigirka {{convert|354|km|mi|abbr=on}} from its mouth. Now uninhabited Vorontsovo village lies near the confluence, on the facing bank of the Indigirka.{{cite web|url=https://maps.vlasenko.net/smtm1000/r-55_56.jpg|title=R-55_56 Topographic Chart (in Russian)|access-date=23 May 2022}}Google Earth
===Tributaries===
The main tributary of the Bolshaya Ercha is the {{convert|101|km|mi|abbr=on}} long Malaya Ercha on the right, as well as the {{convert|40|km|mi|abbr=on}} long Kusagan-Yurekh (Кусаган-Юрэх), the {{convert|36|km|mi|abbr=on}} long At-Khaya (Ат-Хайа), the {{convert|42|km|mi|abbr=on}} long Kistike (Кистикэ) and the {{convert|36|km|mi|abbr=on}} long Erkichan (Эркичан) on the left. The river is frozen between the beginning of October and the beginning of June. There are more than 600 lakes in its basin.[https://web.archive.org/web/20080613135327/http://www.nature.ykt.ru/RIAC/Yakutia_geogr/02.htm#%D0%91%D0%BE%D0%BB%D1%8C%D1%88%D0%B0%D1%8F%20%D0%AD%D1%80%D1%87%D0%B0 Большая Эрча - nature.ykt]
See also
References
{{Reflist}}
External links
- [http://ohota-v-yakutii.ru/ohota-i-ribalka-video-.html Fishing & Tourism in Yakutia]
- [https://rutube.ru/video/7d4257ea2780d69359411735aff86824/ Сибирь. Древний Гранитный город Улахан-Сис - Rutube]
{{Portal bar|Russia}}
Category:Tributaries of the Indigirka
Category:Rivers of the Sakha Republic
Category:East Siberian Lowland
{{FarEast-Russia-river-stub}}
{{SakhaRepublic-geo-stub}}