Complex sentence: In the lower part of its course the Dry Fork collects the Laurel Fork, which joins it in Randolph County, and the Glady Fork, which joins it in Tucker County; both of these are also considered principal tributaries of the Cheat River.
Split into simpler sentences: In the lower part of its course the Dry Fork collects the Laurel Fork, which joins it in Randolph County, and the Glady Fork, which joins it in Tucker County. Both of these are also considered principal tributaries of the Cheat River.