How to keep field notes readable in the rain

Field notes survive rain when you solve three separate problems: a sheet that does not soak, a marking tool that does not run, and a way to close and dry the book afterwards. Almost every guide online answers only the first one and then sells you a waterproof notebook. That is a third of the job. I have lost notes out of a book whose pages handled the weather perfectly well, because there was a gel pen in the loop and the whole thing sat shut in a wet pack for two days.

So here is what actually goes wrong, in order: the physics, the free fixes, the paper, and the rescue.

Why ordinary paper gives up

Wood-pulp paper is a mat of fibres, and fibres drink. When they take on water they swell, unevenly, and the sheet buckles into the ripples you recognise from any notebook that has been caught out. At the same time the paper gets weak. Wet paper loses a large share of its tensile strength, so a ballpoint pressed firmly into a soaked page does not write, it tears.

Then the ink goes. Water-based ink has nothing holding it in place, so it travels sideways along the fibre and you get a furred, spreading letter instead of a word. Drying does not undo any of this. The fibres set in their new buckled shape, pages stick, and the entry you needed is grey.

The pen matters as much as the paper

On a wet page the marking tool is usually the weakest link, and it is the cheapest one to fix.

• Pencil. Graphite is a mineral you rub into the surface. It cannot run, it cannot freeze, and it marks a sheet that is already wet. That is why it tops nearly every field recommendation there is.
• Ballpoint. Oil-based paste, sticks well, dries fast. On a streaming surface it can skip, so wipe the page with a sleeve before you write.
• Pigment liner. Good marks and genuinely permanent once dry, but you have to let it dry.
• Gel pen and fountain pen. Water-based, both of them. These are the failure, not the fix. On a non-absorbent sheet they also dry slowly, so a wet thumb lifts a fresh line straight off.

A stub of pencil clipped inside the cover is the largest improvement available for nothing. More on what writes on what in does stone paper work with a normal pen.

Four things that work tonight, for free

1. Write in the shelter of your own body. Turn your back into the wind and hold the book against your chest. This beats any coating argument going.
2. Use a freezer bag big enough for your hand. You write inside the bag. It looks ridiculous and people who work outdoors for a living have been doing it for decades.
3. Write shorter than you want to. Five words and a number in the rain, the full sentence indoors that evening. A note you copy up the same day has never been lost.
4. Shut the book between entries. Most of the damage happens not while you write but in the twenty minutes the book lies open on a tailgate.

What to change when you do this often

At some point the free route runs out and the sheet itself is the problem. Two routes are worth taking seriously.

Coated wood-pulp paper still has fibres in it, with a layer around them that sheds water off the surface. Rite in the Rain is the best known of these and has decades of field use behind it. The second route removes the fibre altogether. Stone paper is limestone powder held together by a small share of HDPE, so there is simply nothing in the sheet that can take up water. No swelling, no cockling, no ink creeping along the grain, because there is no grain.

One honest word on the label. Water resistant, not waterproof. You can wipe it, write through a shower, and let a wave of rain run across the page, and it is still not diving gear, and we are not going to pretend otherwise. Where the line actually sits is written up separately.

How to rescue a soaked notebook

Suppose it is already too late and you have pulled an ordinary notebook out of a flooded pack. Archives and conservation services do this every week, and their method is simpler than you would expect.

• Do not force it open while it is dripping. Wet paper tears under a load that dry paper would not even register, so take the surface water off first and leave the pages alone.
• Interleave absorbent material roughly every fifty pages, then lay the book flat and closed. As it dries, work down to every twenty or thirty pages.
• Swap the interleaving as soon as it is saturated and put a fan nearby. Air movement matters more than warmth.
• No hairdryer, no radiator, no sunny windowsill. Heat locks the buckling in and leaves the paper brittle.
• If you cannot deal with it within a day or two, seal it in a bag and freeze it. Mould gets going after roughly 72 hours of damp, and frozen paper waits patiently until you have time.

That last one is the trick I learned years later than I should have.

What happens in the cold

Rain is one thing, frost is another, and the advantage widens further there. A sheet with no fibre holds no moisture, so there is nothing in it that can freeze: it stays flexible where damp wood-pulp paper goes stiff and tears at the fold. Graphite also bites darker on it than on ordinary paper, exactly when cold fingers cannot press hard. The cold wet days are where a sheet like this really beats paper.

Common questions

What pen writes in the rain? A pencil is the most reliable, a ballpoint is a solid second. Gel and fountain pens are water-based and will run.

Will a normal notebook cope with light drizzle? For a while, especially if you close it between entries and write in shelter. In sustained rain the paper loses.

Is water resistant the same as waterproof? No. The sheet does not absorb moisture and you can wipe it dry, which is a smaller and more honest claim than nothing gets through. The difference, explained.

Can I dry wet paper and carry on using it? Rarely well. It cockles, and that deformation does not come back out.

Does a pencil mark a wet page? Yes, which is precisely why it is the default field choice. On a non-absorbent surface it also bites darker than it does on ordinary paper.

The short version

Rain attacks notes along three routes and most advice covers one. The sheet must not absorb, the marking tool must not be water-based, and the book has to close and dry without gluing itself together. Two of the three cost you nothing: a pencil, and the habit of shutting the cover. The third is the paper, where the real choice is a coating around the fibre or a sheet with no fibre in it at all.

The second route is what we make, limits included, on our B6 stone paper notebook page. No tree, no bleach, no process water, and here is what that does and does not mean in numbers.

Sources: National Park Service, Saving Wet Books After A Flood, The National Archives, moving and drying items, University of Iowa Libraries, drying a wet book, Rite in the Rain FAQ on pens and pencils, BushcraftUK Community thread on notes in the rain