Lake Powell is about 583 feet (178 meters) deep at its maximum depth near Glen Canyon Dam when the reservoir is at or very close to full capacity.

Quick Scoop

  • The maximum depth of Lake Powell is roughly 583 feet (178 meters) near the dam at full pool.
  • The average depth is around 132 feet (40 meters) when the lake is full.
  • Lake level and effective depth change a lot year to year due to drought, river inflows, and water management on the Colorado River.

Depth vs. Water Level

  • Lake Powell’s “depth” is often described by its surface elevation above sea level , with full pool at about 3,700 feet.
  • In recent years, prolonged drought and heavy demand have kept the lake well below full pool, reducing both depth and total volume.

Why It Changes So Much

  • Lake Powell is a man‑made reservoir behind Glen Canyon Dam, so its depth depends on snowpack in the Rockies, water releases, and long‑term climate trends.
  • Periods of low water have exposed formerly submerged canyons and features, becoming a recurring topic in environmental news and outdoor forums.

TL;DR: At its fullest, Lake Powell is about 583 feet deep near the dam, but current and recent depths are often much less due to ongoing drought and water use.

Information gathered from public forums or data available on the internet and portrayed here.