Gross Dam

Denver Water gravity dam and reservoir in the foothills west of Boulder, Colorado, USA.

At a glance

SourceAuthorRoleIn one line
Is Colorado’s Massive Dam Expansion in Trouble?The B1MsubjectRaising a 1950s dam by 131 feet, and the court fight that stopped it.

Is Colorado’s Massive Dam Expansion in Trouble? — The B1M (2025)

Source: Readwise highlight

Back in the 1950s, a large gravity dam was built here to serve the Denver metropolitan area.

  • Role: subject
  • In the video: The video follows the plan to raise the 340-foot dam by 131 feet with roller-compacted concrete, nearly tripling the reservoir for Denver Water. A court injunction halted work in April 2025, permission to fill the enlarged reservoir has not been given, and environmental groups and residents contest it.
  • Why it matters: The dam is the subject; its stalled state is the story.