Chyornaya Rechka
Location
Country	Russia
Physical characteristics
Mouth	Great Nevka
• coordinates	59°58′45″N 30°18′53″E / 59.9793°N 30.3146°E / 59.9793; 30.3146
Length	8.1 km (5.0 mi)
Basin features
Progression	Great Nevka→ Gulf of Finland

The Chyornaya Rechka (Russian: Чёрная Речка, lit. 'Black River'), originally Mustajogi (in the Karelian language), is a small river in Saint Petersburg. It is 8.1 kilometres long, and flows into the Great Nevka, a branch of the Neva.^[1]

The Chyornaya Rechka is known for famous duels that took place there, including the 1909 duel between Nikolai Gumilyov and Maximilian Voloshin over the matter of a fictitious poet called Cherubina de Gabriak [in the Finnish language: Kaprijakin (Kaprion) Kerubitar], and the fatal duel between poet-playwright Alexander Pushkin and Georges d'Anthès. The Chyornaya Rechka contributes to St. Petersburg's weather – since water absorbs and radiates heat slower than land it makes temperatures less extreme in a place so close to the polar zone.^{[citation needed]}