Gear & Craft
Caching Water In The Desert Is A Logistics Problem
Long desert routes depend on water placed in advance, and the practice raises questions of container choice, evaporation, animal damage and who is responsible for retrieving what is left.
On long routes through the Southwest, natural water is too sparse and too unreliable to plan around. Hikers place water in advance, and the practice has its own set of failures.
Carrying capacity sets the spacing
Water weighs roughly two pounds per liter, and a hot day of walking can require several liters. Carrying two days of water is a serious load rather than an inconvenience.
That weight defines the maximum distance between reliable sources, and where the terrain exceeds it, a cache is the difference between a viable route and an impossible one.
Planning therefore works backward from water rather than from mileage, with campsites chosen to sit between sources instead of at scenic points.
Containers fail in specific ways
Thin single-use bottles split at the seams when they bake and cool repeatedly, and a cache that leaks is worse than no cache because the hiker planned around it.
Heavier containers with screw caps survive better, and burying them or shading them under rock slows both evaporation and ultraviolet damage to the plastic.
Rodents chew through soft plastic to reach moisture, and ravens open anything left visible. Concealment protects the cache from animals more than from people.
A cache is only as good as its coordinates
Desert terrain looks repetitive, and a container placed in the dark at the base of a nondescript wash can be genuinely hard to find in daylight.
Recording precise coordinates plus a written description of nearby features is the standard practice, because a device failure should not cost the water.
Experienced parties plan a contingency for a missing cache, since caches are occasionally taken, destroyed or simply not there.
Public caches are maintained by volunteers
Some desert routes have long-standing water sources stocked by local volunteers, and these are courtesies rather than services. They can be empty when a hiker arrives.
Treating a maintained cache as guaranteed shifts risk onto strangers, which is why the people who stock them consistently ask hikers to carry enough to survive finding it dry.
Where the cache sits on public land, land managers may remove it if it becomes a litter or wildlife problem, and that has ended several long-running arrangements.
Retrieval is part of the plan
Every container placed must eventually come out, and abandoned caches become permanent litter in landscapes where plastic degrades slowly and visibly.
Hikers marking containers with a name and a removal date allow others to distinguish an active cache from trash, and let volunteers clean up what was forgotten.
The ethic is simple enough to state and easy to abandon at the end of a hard trip, which is why abandoned jugs accumulate at road crossings.
Questions readers ask
Why did my torch come back to life in my pocket?
Cold raised the cell's internal resistance and its voltage sagged under load. Warming it restored the reaction rate, and the charge that appeared to be gone became usable again.
Which batteries are best for winter?
Lithium primary cells generally outperform alkaline in cold. Rechargeable lithium-ion works but loses runtime and should not be charged below freezing.
How should I store batteries between trips?
Cool, dry and out of the device. Lithium-ion keeps better at partial charge than full, and alkaline cells left in equipment can leak and destroy it.
