Ugra (Oka)
Template:Short description Script error: No such module "Unsubst". Script error: No such module "Infobox".Template:Template otherScript error: No such module "Check for unknown parameters". The Ugra (Template:Langx) is a river in Smolensk and Kaluga Oblasts in Russia, left tributary of the Oka. The east-flowing Ugra joins the north-flowing Oka at Kaluga and the united river, called the Oka, continues east to the Volga. In the 16th century, the Ugra-Oka confluence was the western end of a line of forts protecting Muscovy from Tatar raids. The river is known for the Great stand on the Ugra River. Its length is Script error: No such module "convert". and its basin Script error: No such module "convert"..[1] It is frozen from late November (sometimes as late as January) until the end of March. 60% of its annual flow is snowmelt, mostly in April.
A part of the valley of the Ugra located in Kaluga Oblast belongs to Ugra National Park.[2]
References
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- ↑ «Река УГРА», Russian State Water Registry
- ↑ Script error: No such module "citation/CS1".
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