On-Archa
| On-Archa | |
|---|---|
| Native name | Он-Арча (Kyrgyz) |
| Location | |
| Country | Kyrgyzstan |
| Region | Naryn Region |
| District | Naryn District |
| Physical characteristics | |
| Mouth | Naryn |
• coordinates | 41°27′27″N 75°49′44″E / 41.4576°N 75.8290°E |
| Length | 75 km (47 mi) |
| Basin size | 1,570 km2 (610 sq mi) |
| Basin features | |
| Progression | Naryn→ Syr Darya→ North Aral Sea |
The On-Archa (Kyrgyz: Он-Арча) is a river in Naryn District of Naryn Region of Kyrgyzstan. It is a right tributary of the river Naryn. The 75 km long On-Archa drains a basin area of 1570 km2, and has annual average flow rate - 9.92 m3/s. In its upper reaches it is known as Soltonsary and Köktorpok. The Soltonsary originates in the Karazhorğo and Kapkatash ranges, while the Köktorpok rises from glaciers on the northern slopes of the Nura Range. The river is used for irrigation. The villages of Onarcha and Ming-Bulak are located along its banks. Artifacts from the Stone Age have been found in the river valley.