Q: is there a drinking water source -Guest
A: There are 4 water caches along the Maah Daah Hey trail. You can see where they are on this map: http://mdhta.com/trail-guide/ There are also 4 caches along The Duece Trail (southern extension of the Maah Daah Hey trail).
A: I'm new, I've never ridden this beautiful place yet, but , for best judgement, take at least 2L of water, and plenty of water in your vehicle. Hydrate like crazy the week prior to the ride! And after the ride, some electrolyte drink is better than water, in a long haul trail like that. I hope that helps.