River Machno (Welsh: Afon Machno) is a river in Snowdonia in north-west Wales, United Kingdom. It is the first major tributary of the River Conwy, which it joins south of Betws-y-coed, past the Pandy Falls and the Machno Falls.

River Machno
The River Machno at Pont Rhyd-y-Gro
Map
Native nameAfon Machno (Welsh)
Location
CountryWales
Physical characteristics
Mouth 
 • location
Confluence with River Conwy

The river originates in the hills surrounding the village of Penmachno. It has its source in the slopes at the head of the Machno valley, and flows through the villages of Cwm Penmachno and Penmachno.[citation needed]

The Snowdonia Slate Trail follows the whole length of the Machno Valley.[citation needed]

Industrial history

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The area around the River Machno has a history of slate quarrying, which was a significant industry in North Wales during the 19th and early 20th centuries. Some remnants of old quarries and mining activities can still be found in the region.[citation needed]