Goksu River is located on the west side of Agva and it pours into the sea from the middle of the beach. The structure of delta in the mouth of the stream differs depending on the season. In winter, due to harsh effects of northern winds and wild waves, the delta opens wide whereas in summer it closes completely under the sand, blocks the river and becomes a part of the beach. The current from the river decreases, but continues to pour into the sea as a bottom current. Goksu River has been a popular place for eco-tourism and beautiful boutique hotels over the last 15 years.