Stock photography, photos: Water Tank Windmill Stock photos of Windmill pumps water into a tank for animals. Sheyenne National Grassland, North Dakota. Photograph: © Matthew Thalman Click for a larger image and more information Keywords associated with this stock photo: windmill, water tank, water, animal, animals, America, National Grassland, North America, North Dakota, Sheyenne National Grassland, United States, United States of America, US, USA