Zimmerman Lake

JOE WRIGHT CR-TR· Larimer, Colorado· Built 1913· Earth· 10 ft tall
Low Hazard Fish And Wildlife Pond State Government

Key Takeaway

Zimmerman Lake is classified as low hazard in Colorado. It was completed in 1913 and is 113 years old. Its primary use is fish and wildlife pond.

Physical Details

Dam Height 10 ft (taller than 4.4% in CO)
Dam Length600 ft
Dam TypeEarth
Max Storage238 acre-ft
Normal Storage138 acre-ft
Surface Area20 acres
Drainage Area0 sq mi
Max Discharge265 cfs
Year Completed1913 (113 years old)
NID IDCO01991

Safety Information

Low Hazard

No probable loss of human life and low economic/environmental losses expected.

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

Emergency Action Plan: No
Last Inspection: July 11, 2013
State Regulated: Yes
Regulatory Agency: DWR

Ownership

COLORADO PARKS AND WILDLIFE

State Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Zimmerman Lake?

Zimmerman Lake is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Zimmerman Lake?

Zimmerman Lake is owned by COLORADO PARKS AND WILDLIFE (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Zimmerman Lake built?

Zimmerman Lake was completed in 1913, making it 113 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 Zimmerman Lake?

Zimmerman Lake serves the following purposes: Fish And Wildlife Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Zimmerman Lake?

Zimmerman Lake has a dam height of 10 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 Zimmerman Lake last inspected?

Zimmerman Lake was last inspected on July 11, 2013. 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.