Alva B. Adams Tunnel

Water tunnel under the Continental Divide in Rocky Mountain National Park, Colorado, USA. The pin is its East Portal.

At a glance

SourceAuthorRoleIn one line
Why Is Colorado Building a 22 MILLION TON Rock Wall in the Rocky Mountains?Aaron WittbackdropThe 13-mile tunnel that brings West Slope water east.

Why Is Colorado Building a 22 MILLION TON Rock Wall in the Rocky Mountains? — Aaron Witt (2025)

Source: Readwise highlight

there’s a 13-mile tunnel called the Adams Tunnel through the mountains, which brings the water from where it is to where it’s needed.

  • Role: backdrop
  • In the video: The video explains that most of Colorado’s water falls west of the Continental Divide while most people live east of it; the Adams Tunnel carries the water through the mountains, and reservoirs like Chimney Hollow store it.
  • Why it matters: Background that explains why the reservoir is needed; minor within the video.