Complex sentence: For more than two decades, the Columbian Whitetail has been off limits to hunting, but in 2005 tags were made available, and now there is the opportunity to hunt them at the Umpqua River.
Split into simpler sentences: For more than two decades, the Columbian white-tail has been off limits to hunting. However, tags were made available in 2005 and there is the opportunity to hunt them at the Umpqua River.