How did Loch Ness get radioactive sediment from Chernobyl?

Loch Ness received radioactive sediment from the Chernobyl disaster in 1986 due to atmospheric deposition. Following the explosion at the Chernobyl nuclear power plant, radioactive particles were released into the atmosphere and carried by winds across Europe. Some of these particles eventually settled on the ground and bodies of water, including Loch Ness, through rainfall and other forms of precipitation. This resulted in the lake accumulating low levels of radioactive sediment over time.