Hypothermia Chart
| Water Temp (degrees) |
Hypothermia Index |
Exhaustion or Unconciousness |
Expected Survival Time |
| 20 to 32 degrees |
EXTREME |
Under 7 minutes |
Under 7-22 minutes |
| 32.5 degrees |
EXTREME |
Under 15 minutes |
Under 15-45 minutes |
| 32.5 to 40 degrees |
SEVERE |
15 to 30 minutes |
30 to 90 minutes |
| 40 to 50 degrees |
HIGH |
30 to 60 minutes |
1 to 3 hours |
| 50 to 60 degrees |
CAUTION |
1 to 2 hours |
1 to 6 hours |
| 60 to 70 degrees |
MEDIUM |
2 to 7 hours |
2 to 40 hours |
| 70 to 80 degrees |
LOW |
3 to 12 hours |
3 hours to indefinite |
| Over 80 degrees |
NONE |
Indefinite |
Indefinite |
The range 20-32 degrees is not on any official chart as most government sources do not track water temperatures that can reach the very cold conditions that Great Salt Lake can reach.