Preheat the oven to 350 degrees.
Mix yogurt, orange juice and orange zest for the cake in a large bowl.
Add in the eggs, vegetable oil and water.
Pour in the dry cake mix and stir together for 2 minutes.
Grease your bundt cake pan well with non stick spray or butter, making sure to get all the edges and the middle tube.
Pour cake mixture into the bundt pan.
Place in the oven and bake for about 35 minutes, or until a toothpick comes out clean.
Allow to cool in pan for 15 minutes.
Flip the pan over onto a cooling rack and remove from pan carefully. Allow to cool completely.
Combine all ingredients for the glaze in a small bowl. Add more powdered sugar or a little more orange juice if necessary to get the right consistency.
Pour glaze evenly over cake.