Complex sentence: The most major or them, the Fushui Dam (富水大坝;) is located in Yangxin County just east of the Tongshan County county line; it creates a fairly large Fushui Reservoir (富水水库).
Split into simpler sentences: The most major or them, the Fushui Dam (富水大坝;) is located in Yangxin County just east of the Tongshan County's county line. The dam creates a fairly large Fushui Reservoir (富水水库).