51

I have a very deep vertical mine shaft (I started in a mountain and hit bedrock), so it takes a long time to get up or down using my ladder. To speed up the trip down I thought "why don't I add a little pool for me to jump in?", but when testing it out the first time I died and had to rush back to my mine to collect my items before they disappeared.

How deep do I have to make the pool in order to prevent myself from taking damage when I hit the water?

  • 1
    I've also used this tip, very handy (if a little unnerving). – Stu Pegg Oct 8 '10 at 18:27
38

As of version 1.4.3, only a single block is enough to prevent all fall damage.

For previous versions it was 3 blocks.

  • 2
    I thought I read somewhere it was only 2? – BlueRaja - Danny Pflughoeft Oct 8 '10 at 17:49
  • 1
    @BlueRaja possibly the minecraft wiki. It states that water has to be deeper than 2 blocks to prevent you from taking falling damage. – Noctrine Oct 8 '10 at 19:56
  • 1
    2 worked for me, great tip though. – travis Oct 13 '10 at 14:26
  • 4
    Now all you need is a boat to ride the waterfall all the way back up. – Theo Belaire Jan 27 '11 at 4:33
  • 1
    I've jumped from max altitude to bedrock. My landing was one water block placed three squares above the bedrock and fenced in on the ground with signs--you hit, fall to the bedrock and can walk away uninjured. You need the first part of your jump to be confined or it's possible to miss. – Loren Pechtel Mar 13 '13 at 19:46
32

While yx_'s answer that the water must be 3 deep to prevent damage is mostly correct, it doesn't actually have to be 3 deep but only three blocks away from the surface below.

Water  
Water  
Water  
[Solid]

will prevent damage, but so will

Water  
Sign  
Air  
[Solid]

This also works with ladders instead of signs, and probably doors too, but ladders can still kill you if you hit the edge of them. Another thing to remember is that the water block effectively resets your distance fallen, so if you fall too far after leaving the water you will take damage.

  • 1
    This still requires the same amount of space as 3 blocks of water and requires extra materials to set up :P – Invader Skoodge Sep 6 '11 at 11:18
  • 5
    @ Strix True, but when going all the way down to bedrock it can save space and materials in many cases. It's also nice to not have to jump out of a pit of water. – Fambida Sep 6 '11 at 13:02
  • Interesting! Last time I tried this, a single block of water wasn't enough to completely stop damage, but I just used a flying mod to test a fall of ≈250 blocks and escaped without a scratch. (@StrixVaria — I prefer this variety of stop because it doesn't leave you standing in water afterward.) – Ben Blank Sep 6 '11 at 18:52
  • 2
    Another version that avoids jumping out: Ring your water with signs. You can walk through them, the water stays put. – Loren Pechtel Sep 6 '11 at 20:16
  • This is genius, good sir. – MonochromaticPalette Jan 4 '12 at 7:11
3

After the release of 1.5 I tested this by jumping into pools of water 3x3x1, 3x3x2 and 3x3x3 from a height of 64 blocks. I did this by flying up and then using the /gamemode command to set myself on survival. To my surprise, landing in the pool 1 block deep didn't kill me and I walked away without any injuries. This may be by design in 1.5 or it may be changed in later versions.

Before 1.5 it was 3 blocks to survive.

  • 1
    According to the wiki, this change was introduced in 1.4.3. All damage is absorbed by a single block of water (even shallow flowing water) when falling from any height. – George Cummins Aug 16 '13 at 19:11
  • In 1.8, the behavior has changed again. Multiple water blocks will be required again to eliminate damage from certain heights. – George Cummins Oct 12 '14 at 16:43
  • @GeorgeCummins Are you sure about that? I tried jumping from max build height to roughly sea level into less than one block of water (the water was flowing from elsewhere and wasn't deep) and I took no damage). – Kelmikra Jul 27 '15 at 2:02
0

You could put one only one layer of water and when you are falling, press and hold space so you will end up swimming. I never really tried it down to bedrock, but it prevented fall damage from like a 64 block tall cliff which I happen to be experimenting a couple of weeks ago that I almost forgot. =)

  • You do realize that height makes a big difference... 25 blocks is only about a tenth of the total height, and mathing a 25 meter fall gives me a speed of 20ish m/s, whereas a fall from 250 blocks gives more than 3 times the speed (sqrt(10) actually) at around 70 m/s. Your extrapolation has failed. – Sconibulus Mar 13 '13 at 20:20
0

You will not take fall damage even if you land in minimal flowing water. I mean that you don't take fall damage after landing on water,no matter the depth.

protected by Frank Aug 12 '15 at 3:39

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