Be careful using the creek water for your horses Jason. If it looks real stagnant and scummy with algae it could have a blue green algae that is toxic to mammals.
We've had a few reports of dogs dying or suffering severe kidney damage from drinking water with a certain type of blue green algae in it here in Indiana. The high temps are supposed to be a factor with this algae's development.
Last edited by Cecil Baird1; 07/25/12 09:58 PM.