[2] The Ashchysu has its sources in a spring of the southern slopes of the Semizbughy massif of the Kazakh Uplands.

It heads first southwards, then it bends and flows roughly westwards within a plain to the north of the Ayr Mountains.

The Ashchysu reservoir is located in the final stretch, about 12 km (7.5 mi) upstream from the confluence with the Nura.

Finally it reaches the right bank of river Nura 12 km (7.5 mi) upstream from Sheshenkara village, former Proletarskoye.

[3][2] Among the fish species inhabiting the waters of the Ashchysu, the crucian carp, tench, pike, perch and ide are worth mentioning.