Have a creek that runs through your property that has been water for our livestock for years now the people down stream are blocking it off and our creek is dry can we do anything about this?

Unfortunately, no. The creek for your neighbors down stream runs through their property and they have every right to do what they want with it. You are going to have to dig a well to get water to your livestock, even though it will cost a bit to do, depending on where you live and how for down you have to drill for water. Unless you can find out why they blocked the creek off and negotiate with them to have it flowing again.