Krishna River
Tenali is situated at , on the southern deltaic region of Krishna River. The city is spread over an area of . It lies at an average altitude of above mean sea level. It is also called as City without a National Highway. The East canal, the Nizampatnam canal and the West canal flow through the city, which originates from Krishna River. The region around the city forms a part of "Western Delta System" of Krishna river. The area is covered by Alluvium and the main soil varieties are Red and Black.