Terrell Branch (Hyco River tributary)Terrell Branch is a long 1st order tributary to the Hyco River in Halifax County, Virginia.CourseTerrell Branch rises about 1.5 miles south of Omega, Virginia, and then flows southeast to join the Hyco River about 2.5 miles south of Omega.WatershedTerrell Branch drains of area, receives about 45.7 in/year of precipitation, has a wetness index of 365.53, and is about 89% forested.