It's funny how many people think that deer need to go to water regularly when normally they can get by just on the moisture in the food they eat, whereas antelope and elk do need to go to water daily due to their different digestive systems. However, if deer live near a water source, they will certainly use it. After I made the other post I did think about a young deer that might breed in December or January for the first time, but the OP called it an adult deer that I would consider more than one year old.