Erbognone
The Erbognone (also: Arbogna) is an Italian stream whose sources is south of Novara in the province of Novara. Course 

The stream has is source near Novara ;  With the name Arbogna  flows south past Vespolate and Borgolavezzaro before crossing into the province of Pavia. The river then flows past Mortara and enters the Agogna beyond the point where the Agogna flows past Lomello. A branch of a canal that also flows into the Terdoppio enters the Erbognone after it flows past Mortara. The stream flows mostly in a southward direction (now changes its name to Erbognone) and is roughly parallel to the Agogna until it bends and enters the Agogna. References

Rivers of Italy
Rivers of the Province of Novara
Rivers of the Province of Pavia