What is Poseidon anecdote about the deity?

Poseidon and Athena (the goddess of war) were competing with one another for the ownership/control of Athens. Both of these powerful gods strived to win control of this land. To win over the Athenians, Poseidon threw his spear at the ground and produced the spring at the Acropolis. Poseidon was sure that providing the Athenians with this spring would win them over. Poseidon's donation to the Athenians was good, but Athena's was better. She won over the Athenians and reigned victorious after her ingenious contribution of the olive tree. Poseidon was so angry at his loss that he flooded the Attic Plain. Eventually, the two gods came over their differences and worked together to combine their powers for the greater good. For example, Athena built the first ship which was used to sail upon the sea belonging to Poseidon.