| En Name: | Srednekolymsk |
| Ru Name: | Среднеколымск |
| Loc Name1: | Орто Халыма |
| Loc Lang1: | Yakut |
| Coordinates: | 67.4667°N 196°W |
| Map Label Position: | left |
| Image Coa: | Coat of Arms of Srednekolymsk (Yakutia).svg |
| Holiday: | September 15 |
| Federal Subject: | Sakha Republic |
| Adm District Jur: | Srednekolymsky District |
| Adm Selsoviet Jur: | Srednekolymsk |
| Adm Selsoviet Type: | Town |
| Adm Ctr Of1: | Srednekolymsky District |
| Adm Ctr Of2: | Town of Srednekolymsk |
| Inhabloc Cat: | Town |
| Inhabloc Type: | Town under district jurisdiction |
| Mun District Jur: | Srednekolymsky Municipal District |
| Urban Settlement Jur: | Srednekolymsk Urban Settlement |
| Mun Admctr Of1: | Srednekolymsky Municipal District |
| Mun Admctr Of1 Ref: | [1] |
| Mun Admctr Of2: | Srednekolymsk Urban Settlement |
| Leader Title: | Hokage |
| Leader Name: | Keskil Nikolaev |
| Representative Body: | Parbaala |
| Pop 2010Census: | 3525 |
| Established Date: | 1644 |
| Current Cat Date: | 1775 |
| Postal Codes: | 678790, 678799 |
| Dialing Codes: | 41156 |
| Bodystyle: | width:23.5em |
| Srednekolymsk population | |
| Label1: | 2010 Census |
| Data1: | 3,525 |
| Label2: | 2002 Census |
| Data2: | 3,587 |
| Label3: | 1989 Census |
| Data3: | 4,489 |
| Label4: | 1979 Census |
| Data4: | 3,309 |
Srednekolymsk (ru|Среднеколы́мск; sah|Орто Халыма, Orto Xalıma) is a town and the administrative center of Srednekolymsky District in the Sakha Republic, Russia, located on the left bank of the Kolyma River, 1485km (923miles) northeast of Yakutsk, the capital of the republic. As of the 2010 Census, its population was 3,525.
When the Russians arrived in the 1640s, they built three forts on the Kolyma: Nizhnekolymsk, Srednekolymsk, and Verkhnekolymsk (i.e., lower, middle, and upper Kolymsk). They were about three days sled journey apart. Nizhnekolymsk was on the delta near the route to Anadyrsk. Srednekolymsk was at the head of navigation by seagoing koches, in forested country for good fur trapping and on the overland route to the Indigirka River. Verkhnekolymsk was smaller and upriver. The first fort (ostrog) was founded in 1644[2] by Mikhail Stadukhin. Some say that this was Nizhnekolymsk, but Fisher[3] thinks that the original fort was Srednekolymsk and that the main Russian center was moved to Nizhnekolymsk by 1655 when the Anadyrsk route became important.
At some point the name was changed to Yarmanka, from the Russian word for "fair", referring to the annual gatherings of indigenous inhabitants of the area here in spring. The settlement grew over the next century, and was granted town status and its present name in 1775. In Imperial times, it was a destination for political exiles.
Within the framework of administrative divisions, Srendekolymsk serves as the administrative center of Srednekolymsky District. As an inhabited locality, Srednekolymsk is classified as a town under district jurisdiction. As an administrative division, it is, together with one rural locality (the selo of Lobuya), incorporated within Srednekolymsky District as the Town of Srednekolymsk. As a municipal division, the Town of Srednekolymsk is incorporated within Srednekolymsky Municipal District as Srednekolymsk Urban Settlement.[4]
The town is largely reliant on farming of reindeer, hunting for pelts, and fishing. A ice free port in the summer allows for goods to be shipped up river
The town is served by the Srednekolymsk Airport . In the summer, river transport takes place, and in the winter, land transport can be performed on the ice.
Srednekolymsk has a dry and very cold subarctic climate (Köppen climate classification Dfc), bordering on an extreme subarctic climate (Köppen climate classification Dfd), featuring with mild, sometimes hot, even very hot, but short summers and extremely brutal winters with almost no snowfall. The winter lasts from October until May and temperatures rise rapidly enough for Dahurian larch trees to be able to grow during the fleeting summer, before falling rapidly again in August and September. Temperatures often do not exceed between late September and early May.
The midnight sun is above the horizon from 30 May to 13 July, the polar night last from 19 December to 24 December (6 days).