Green Mountain Dam
Dam in Summit County, Colorado · Blue River · forms Green Mountain Reservoir
Height
309 ft
94 m (NID height)
Length
1,150 ft
351 m
Completed
1943
Green Mountain Reservoir today
7,825.94 ft
7 days ▼ 1.88 ft
Normal storage
153,640 acre-ft
Reservoir level measured Oct 21, 2026, 12:00 AM MDT. Full level page →
Facts
- Purposes
- Hydroelectric; Irrigation; Recreation
- Dam type
- Earth
- Structural height
- 309 ft
- Owner
- BUREAU OF RECLAMATION (Federal)
- Maximum storage
- 161,850 acre-ft
- Surface area
- 2,125 acres
- Hydraulic height
- 264 ft
- Drainage area
- 582 sq mi
- Spillway
- Controlled, 75 ft wide
- Army Corps district
- Omaha District
- Also known as
- Green Mountain Reservoir
- NID ID
- CO01658
Facts from the U.S. Army Corps of Engineers National Inventory of Dams, record updated Oct 6, 2026. Search NID ID CO01658 at nid.sec.usace.army.mil. Project website.