The Ahu River starts its journey from the Tonkra hill in Agar tehsil in Agar Malwa district.

[1] It flows through the north-western boundary of the district, forming a natural border with Jhalawar District, Rajasthan.

Its waters originate from the heights of the Tonkra hill and eventually find their way to the Kali Sindh River.

[4] The Ahu River is relatively small and does not have major tributaries of its own.

Its significance lies in its role as a contributor to the Kali Sindh River.