Melts the mouth river to originate in the Zuoquan County warm city, the drainage area 12.01 square kilometers, converges after Hong water ballast Bai Hecun coils the Hong River main current.

• 化口河发源于左权县温城，流域面积12.；01平方公里，经洪水镇白和村汇入蟠洪河干流。