Combine sugar, oil, and eggs in a bowl. Mix well. Stir in pumpkin and ginger until blended. Sift flour, flax seed, baking soda, salt, baking powder, nutmeg, cinnamon, allspice and cloves together. Add to pumpkin mixture; mix well. Stir in water and walnuts. Pour evenly into three greased 8x4-inch loaf pans. Bake at 350 degrees F for 50 minutes to 1 hour or until toothpick comes out clean.