Little Tiber

The Little Tiber is a river that flows in Camp Jupiter. While not the original Tiber river in Rome, the campers of Camp Jupiter call it the "Little Tiber."

The Son of Neptune
When Percy Jackson arrives at the Roman camp with the Gorgons close behind, he uses the waters of the Little Tiber to create whirlpools and two giant hands made of water. The hands follow his commands and drag the two Gorgons under the waves, ripping them into dust and not allowing them to reform. Unfortunately, the waters are also able to wash away Percy's curse of Achilles, as his Greek blessing cannot cross over to Roman territory. After having been splashed with water, Percy feels like he had taken an acid bath, and comments on feeling vulnerable. After the danger has passed, Hazel Levesque pulls Frank Zhang from the river. Frank later picks up two vials from the river, which were spoils of war that were left behind by the Gorgons.

After Percy returns from his quest to free Thanatos, he has a dream where he sees Juno on the banks of the river. They argue about the six months that Percy was asleep for, and Percy tries to drown her in the river's waters, but fails because the goddess keeps disappearing and reappearing in another place.