Method jump height question

[sweetbraid]

There is a bridge near where I live, it overlooks a large body of water, one of the Great Lakes. According to google, its height is 64m, but the clearance below is 38m, approximately 19 and 11 stories, respectively. I'm disabled (my body doesn't work correctly) and already have relatively impactful brain damage, and I can't swim. I'm also planning on doing this in the next month or two when the weather is still cold so that the chances of also getting hypothermia from the water are higher, adding to the likelihood of mortality. What do you think are the chances of death? Assuming I were to jump at a time when the chances of rescue are slight.
Thanks for your time

 

[merpmerp]

As a rule of thumb (For almost 100% sure, immediately death):
100m (~328 feet) with landing on a hard surface.
200m (~656 feet) with landing on water.

... took this from the jumping megathread. im not sure of its accuracy as it depends how you land..

 

[Endeavour]

I know nothing about jumping, I personally couldn't do it, but funnily enough while channel hopping today i saw a tv show "inside the ambulance" or something. Think it was in Canada since they spoke English and French, and as they were driving somewhere they came across a jumper.

Off a bridge onto a road, about 70 ft, dead as a dodo - they didn't even try to resuscitate him/her.

 

[neitherherenorthere]

All I know is that you take 1d6 bludgeoning damage for every 10 ft. you fall.

Kidding. Geo Stone's book says 150 ft (~45 m) over land and 250 ft (~76m) over water is adequate. Supposedly jumping from 30m has a 90% chance of death, but that might be over land and not water. I'm also not sure if that means death on impact or eventual death from traumatic injury or something else. Even if you didn't die instantly, you would probably drown rather than manage to pull yourself out of the water and die of hypothermia.

 

[Zimcity]

As a rule of thumb (For almost 100% sure, immediately death):
100m (~328 feet) with landing on a hard surface.
200m (~656 feet) with landing on water.

... took this from the jumping megathread. im not sure of its accuracy as it depends how you land..

Really.
Clearly I didn't research enough.
I just stood for several hours over a 70+ meter bridge over water.
It looked way to low and I felt certain it wouldnt kill me. Almost looked like something I'd jump for fun in my youth. I assume I'd die due to possibly not landing right + currents+ cold. I've jumped over 20 metres for fun and that was nothing.

But I figured I'd either mangle myself suffering and struggling for a long time or just swim to shore and plod dead frozen back to the car.

 

[sweetbraid]

All I know is that you take 1d6 bludgeoning damage for every 10 ft. you fall.

Kidding. Geo Stone's book says 150 ft (~45 m) over land and 250 ft (~76m) over water is adequate. Supposedly jumping from 30m has a 90% chance of death, but that might be over land and not water. I'm also not sure if that means death on impact or eventual death from traumatic injury or something else. Even if you didn't die instantly, you would probably drown rather than manage to pull yourself out of the water and die of hypothermia.

Lol!
This is super helpful, thank you!

 

[merpmerp]

I know nothing about jumping, I personally couldn't do it, but funnily enough while channel hopping today i saw a tv show "inside the ambulance" or something. Think it was in Canada since they spoke English and French, and as they were driving somewhere they came across a jumper.

Off a bridge onto a road, about 70 ft, dead as a dodo - they didn't even try to resuscitate him/her

Really.
Clearly I didn't research enough.
I just stood for several hours over a 70+ meter bridge over water.
It looked way to low and I felt certain it wouldnt kill me. Almost looked like something I'd jump for fun in my youth. I assume I'd die due to possibly not landing right + currents+ cold. I've jumped over 20 metres for fun and that was nothing.

But I figured I'd either mangle myself suffering and struggling for a long time or just swim to shore and plod dead frozen back to the car.

Ya I have stood out over a similar bridge. People had jumped over it and died though so I'm guessing they were head impacts. I think the estimates are based on 100% fatality no matter how you fall. The bridge you went to could but there would be a risk of things going awry

 

[CivilizationV]

How can one make sure to land on the head and not make a roll in the air or end up landing on your belly to the floor?

 

[merpmerp]

How can one make sure to land on the head and not make a roll in the air or end up landing on your belly to the floor?

I've always wondered. You definitely can't fall straight down like a diver. I think you'd have to lean into the fall so you fall on your back or front