捷恰河是俄罗斯的河流，位于车里雅宾斯克州和库尔干州内，河道全长243公里，流域面积7,500平方公里，发源自车里雅宾斯克西北约80公里的奥焦尔斯克，一直朝东北方向流进，最终在达尔马托沃注入托博尔河的支流伊塞特河。

1949年至1956年期间，附近的核设施把7,600万立方米的放射性废料倒进河中，现时捷恰河上游河水不能用作饮用或灌溉。

The Techa River is a river on the eastern flank of the southern Ural Mountains noted for its nuclear contamination. It is about 240 kilometres (150 mi) long, and its basin covers 7,500 square kilometres (2,900 sq mi). It begins at the formerly secret nuclear-processing town of Ozyorsk, Chelyabinsk Oblast about 80 kilometres (50 mi) northwest of Chelyabinsk and flows northeast to Dalmatovo on the Iset River, a tributary of the Tobol River. Its basin is enclosed on the southeast by that of the Miass River, another river that flows northeast into the Iset.