We have sat for hours watching elephants come and go from a waterhole at Hwange National Park - Zimbabwe. Many reference photos to choose from to capture it. 

Elephants require about 68.4 to 98.8 L (18 to 26 gal.) of water daily but may consume up to 152 L (40 gal.). An adult male elephant can drink up to 212 L (55 gal.)