Ridges Basin Dam
Dam in La Plata County, Colorado · Basin Creek · forms Lake Nighthorse
Height
273 ft
83 m (NID height)
Length
1,600 ft
488 m
Completed
2008
Lake Nighthorse today
6,880.36 ft
7 days ▲ 0.03 ft
Normal storage
121,070 acre-ft
Reservoir level measured Oct 21, 2026, 1:00 AM MDT. Full level page →
Facts
- Purposes
- Water Supply
- Dam type
- Earth
- Structural height
- 273 ft
- Owner
- BUREAU OF RECLAMATION (Federal)
- Maximum storage
- 139,809 acre-ft
- Surface area
- 1,548 acres
- Hydraulic height
- 203 ft
- Drainage area
- 14 sq mi
- Spillway
- None
- Army Corps district
- Albuquerque District
- Also known as
- Lake Nighthorse
- NID ID
- CO02952
Facts from the U.S. Army Corps of Engineers National Inventory of Dams, record updated Oct 6, 2026. Search NID ID CO02952 at nid.sec.usace.army.mil. Project website.