Glacier Lake

PENNSYLVANIA GULCH· Boulder, Colorado· Built 1905· Earth· 25 ft tall
High Hazard Irrigation Recreation Private

Key Takeaway

Glacier Lake is classified as high hazard in Colorado. It was completed in 1905 and is 121 years old. Its primary use is irrigation. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.

Physical Details

Dam Height 25 ft (taller than 53.1% in CO)
Dam Length401 ft
Dam TypeEarth
Max Storage329 acre-ft
Normal Storage229 acre-ft
Surface Area20 acres
Drainage Area0 sq mi
Max Discharge353 cfs
Year Completed1905 (121 years old)
NID IDCO00223

Safety Information

High Hazard

Loss of human life is likely if the dam fails.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: Yes
Last Inspection: July 26, 2022
State Regulated: Yes
Regulatory Agency: DWR

Ownership

GLACIER LAKE HOMEOWNERS ASSOC. (PETERSON, JESS)

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Glacier Lake?

Glacier Lake is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Glacier Lake?

Glacier Lake is owned by GLACIER LAKE HOMEOWNERS ASSOC. (PETERSON, JESS) (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Glacier Lake built?

Glacier Lake was completed in 1905, making it 121 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.

What is the primary purpose of Glacier Lake?

Glacier Lake serves the following purposes: Irrigation, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Glacier Lake?

Glacier Lake has a dam height of 25 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.

When was Glacier Lake last inspected?

Glacier Lake was last inspected on July 26, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.

Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.