Lake Powell — Colorado River Basin & Water Stress

UPSC Relevance: Geography

Why in News?

Lake Powell is important in discussions on Colorado River water management, drought and declining reservoir levels in the southwestern United States.

Key Facts

  • Lake Powell is a major reservoir on the Colorado River.

  • It was created by the construction of Glen Canyon Dam.

  • It lies primarily in Arizona and Utah.

  • Glen Canyon Dam is a concrete arch dam.

  • Storage at full elevation is about 25.16 million acre-feet.

  • The reservoir is an important component of the Colorado River Storage Project.

  • It supplies water and hydropower to the southwestern United States.

Environmental Significance

The Colorado River basin faces:

  • Prolonged drought

  • Climate-change-induced aridification

  • Increasing water demand

  • Agricultural consumption

  • Urban demand

  • Reservoir depletion

UPSC Key Pointers

  • Lake Powell → Colorado River

  • Glen Canyon Dam → creates Lake Powell

  • States → Arizona and Utah

  • Region → Southwestern USA

  • Major issue → water scarcity and interstate/international river management

  • Colorado River ultimately drains into the Gulf of California.

Prelims Trap: Lake Powell is not a natural lake; it is a reservoir created by a dam.