Inva
In’va
a river in Komi-Permiak National Okrug, Perm’ Oblast, RSFSR. A right-bank tributary of the Kama River. It flows into the Kama Reservoir, whose headwaters extend for 50 km up its course. Length, 257 km; basin area, 5,920 sq km. It arises in the Verkhnekama Upland and is fed chiefly by melting snow and groundwater. The average rate of flow at the village of Agishevo, 30 km from its mouth, is 29 cu m per sec. The In’va freezes over in the beginning of November and thaws in late April. Its major tributary is the Velva, which enters it from the left. The river is used to float logs and is navigable on its lower reaches. The city of Kudymkar is situated at its junction with the Kuvy River.