The "survival limit" for falling into water depends heavily on body orientation and entry speed, but for most humans, the upper threshold is approximately 186 feet (56 meters), which results in an impact velocity of about 68 mph (100 ft/sec). At this height, even with a perfect "feet-first" entry, the deceleration forces are near the limit of human bone and organ tolerance. While the world record for "high diving" is significantly higher—over 190 feet—these are professional athletes with extreme training and safety teams. For the average person, falling from a height like the Golden Gate Bridge (220-250 feet) is almost always fatal; 98% of people who jump do not survive the impact because water acts like concrete at high velocities due to its incompressibility. A high-value technical detail: survival at extreme heights is only possible with a "pencil" entry (feet first, arms tight) to minimize the surface area of the impact. If you hit the water "prone" (belly flop) from just 50 feet, the instantaneous G-force can cause internal hemorrhaging or a broken neck, making the "water is soft" myth a dangerous misconception.