Originally Posted by skb2706

The CDOW put out an article a couple years back clearly stating that mule deer can avoid actual water for more than two weeks and at times get the majority of their liquid intake from what they eat. I'll see if I can't locate it or a link to it. We hunt the open and very dry prairie so this would be common in our area.
With that being said if they are accustomed to a water source and frequent it they no doubt have a schedule. I'd say early morning....just from regular observations.