The Daldykan (Russian: Далдыкан or Долдыкан Doldykan^[1]) is a river close to Norilsk in Taymyrsky Dolgano-Nenetsky District, Krasnoyarsk Krai in Russia, a right tributary of the Ambarnaya. It is 29 kilometres (18 mi) long, and has a drainage basin of 98.4 square kilometres (38.0 sq mi).^[1]

The Daldykan has been regularly polluted by nickel industry, namely from Nornickel; as a result the river's water has turned red.^{[2] [3]}

May 2020 diesel spill

In May 2020, 17,500 tonnes of diesel fuel spilt into the river from a power plant.^[4] Russia's president, Vladimir Putin, declared a state of emergency.^[5]