Ya
Location
Country	Norway
Region	Innlandet
Municipality	Tynset
Physical characteristics
Source	Nordya, Storya
• location	North of Grøntjørnan, Tynset, Innlandet
• coordinates	62°36′23″N 10°36′37″E / 62.60639°N 10.61028°E / 62.60639; 10.61028
• elevation	895 m (2,936 ft)
Mouth	Orkla River
• location	Yset, Innlandet, Norway
• coordinates	62°33′53″N 10°18′44″E / 62.56472°N 10.31222°E / 62.56472; 10.31222
• elevation	510 m (1,670 ft)
Length	38 km (24 mi)
Basin size	285 km2 (110 sq mi)

The Ya is a 38-kilometer (24 mi) river in the municipality of Tynset in Innlandet county, Norway.^[1]

The river starts as the confluence of the Nordya (North Ya) and Storya (Big Ya) north of the Grøntjørnan farm. The Midtya (Middle Ya) is a higher tributary of the Nordya.^[2] The largest source of the Ya is Falningsjøen (Lake Falning, elevation 850 meters or 2,790 feet) via the tributary Falninga; the lake is used as a reservoir for the Ulset Hydroelectric Power Station.^[3] The river is a right tributary of the Orkla River, which it flows into from the east with its mouth at Yset near Norwegian National Road 3. Together with its tributaries, the Ya has a drainage area of 285 square kilometers (110 sq mi). The Ya river system runs through Forollhogna National Park and the Grøntjønnan Nature Reserve.