Greenrush River

Greenrush River is a mighty river that begins in Zul'Aman's Lake Abassi and exits the region in the southwest. The Greenrush River, with origins in Zul'Aman, travels through the Eastern Plaguelands and finally empties into Darrowmere.

Speculation
It may be the same river as Thondroril River, perhaps "thondroril" is "greenrush" in Thalassian or maybe the Thonodroril River and the Greenrush River are two different and independent rivers but the Greenrush River still has not been implemented in the game.