Answer: Chikkaballapur
Notes: Penna (also known as Pennar, Penner, Penneru, and Uttara Pinakini) rises in the Nandi Hills located in Chikkaballapur District of Karnataka. This river runs north and east through the states of Karnataka and Andhra Pradeshand empties into the Bay of Bengal. On the banks of South Pennar River Bengaluru, Hosur, Tiruvannamalai, and Cuddalore are the important cities. The major industrial settlements on its banks are Chandapura, Anekal, Hosur, Bagalur and Chengam.
