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With grad school winding down for the semester, I'm starting to get some creative ideas for prepping. It dawned on me that maybe this could be a good prep forum.

My biggest idea is to create a portable water catchment system. I am considering taking like a 4-5foot section of 4" PVC, cutting a small slot (quarter inch or so) in it the entire length, and then finding a way to fix the edge of a tarp inside the slot. The pipe could be set on the ground, and the top edges secured to trees or other uprights.

This design clearly wouldn't be needed if you prepare your BOL adequately for rain collecting, but in the event of traveling to your BOL, it might be a viable source of water if you aren't near a ground source of it or run out of stores that you carry. Even if it doesn't rain, it would make a pretty good impromptu tent to sleep under at night.

Does anyone else have any ideas?
It sounds like you are making this harder than it is and especially in a bug out scenario who wants to haul around a 5 foot piece of pipe.

I may not be understanding your premise but how does it differ from this?

Getting Started In Emergency Preparedness: Expedient Water Collection, One Method
 

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In a bug out situation where you cant carry much around there is a neat trick called evapotranspiration, here in the desert we dont get much water but anywhere you find a tree or plant life you can get small amounts of water by wrapping a plastic bag around the leaves, the tree or shrub will sweat and water will collect in the bag, not gallons worth but enough to survive, it's an idea worth remembering. Plastic bags are cheap, light and easy to carry, here is a link I found on it,
The Water Cycle: Evapotranspiration, from USGS Water-Science School
Enough to survive?

Maybe with 100 plastic bags but I am not sure you can get the required amount of water (say 2 gallons a day for high desert conditions) from evaporation.

I'm not saying it isn't possible but I would really want to check that out before hand, Montana is a "high desert" with annual rainfall of about 15 inches, which lends to my conclusions. I see you live in Texas which is... I'll just say it.. about as close to hell as you can get temperature wise. Have you done this?
 
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