| Ya | |
| Subdivision Type1: | Country |
| Subdivision Name1: | Norway |
| Subdivision Type3: | Region |
| Subdivision Name3: | Innlandet |
| Subdivision Type5: | Municipality |
| Subdivision Name5: | Tynset |
| Length: | 38km (24miles) |
| Source1: | Nordya, Storya |
| Source1 Location: | North of Grøntjørnan, Tynset, Innlandet |
| Source1 Coordinates: | 62.6064°N 10.6103°W |
| Source1 Elevation: | 895m (2,936feet) |
| Mouth: | Orkla River |
| Mouth Location: | Yset, Innlandet, Norway |
| Mouth Coordinates: | 62.5647°N 10.3122°W |
| Mouth Elevation: | 510m (1,670feet) |
| Basin Size: | 285km2 |
The Ya is a 38km (24miles) 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 850m (2,790feet)) 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 285km2. The Ya river system runs through Forollhogna National Park and the Grøntjønnan Nature Reserve.