The river Wep runs through northern Barony Phobos. Where it meets the Friwep to form the Gu-Gel, the ancient city of Odolotos can be found.

Flooding from the Wep occasionally causes serious damage to the settlements between it and the Friwep. When this occurs, the likes of Barons Neshomeh and Huinesoron can often be seen at the forefront of the preservation effort.