Answer
The elevation is -3820 ft, or 3820 ft below sea level.
Work Step by Step
The surface is at 1495 ft. Subtract the depth at any given point to find the elevation at that point.
$1495-5315=-3820 ft$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.