Water – Planning your carry
With the exception of an occasional day hike, water is the one item that you begin the day with the need to plan for resupply. For its volume, water is the heaviest item in your pack. Carrying more than a little excess water isn't a good way to keep your pack weight low. On the other hand, it is important to always keep enough water on hand to keep from becoming dehydrated. For those reasons, water requires more planning and attention than probably any other item you will carry. Containers First,...