Dyekman

BIG THOMPSON RIVER-OS· Larimer, Colorado· Built 1902· Earth· 10 ft tall
Low Hazard Irrigation Private

Key Takeaway

Dyekman is classified as low hazard in Colorado. It was completed in 1902 and is 124 years old. Its primary use is irrigation.

Physical Details

Dam Height 10 ft (taller than 4.4% in CO)
Dam Length600 ft
Dam TypeEarth
Max Storage80 acre-ft
Normal Storage64 acre-ft
Surface Area16 acres
Drainage Area0 sq mi
Max Discharge0 cfs
Year Completed1902 (124 years old)
NID IDCO02257

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 31, 1980
State Regulated: Yes
Regulatory Agency: DWR

Ownership

TOM DYEKMAN (TOM DYKEMAN)

Private

Nearby Dams

Donath Lake

Larimer, CO

Significant Hazard 26 ft

Fairport

Larimer, CO

Significant Hazard 12 ft

Horseshoe Lake (East Dam)

Larimer, CO

Significant Hazard 35 ft

Horseshoe Lake (South Dam)

Larimer, CO

Significant Hazard 24 ft

Westerdoll Lake

Larimer, CO

Low Hazard 11 ft

Boyd Lake

Larimer, CO

High Hazard 40 ft

Fairway

Larimer, CO

Significant Hazard 25 ft

Houts

Larimer, CO

Low Hazard 7 ft

Frequently Asked Questions

What is the hazard classification of Dyekman?

Dyekman 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 Dyekman?

Dyekman is owned by TOM DYEKMAN (TOM DYKEMAN) (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Dyekman built?

Dyekman was completed in 1902, making it 124 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 Dyekman?

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

How tall is Dyekman?

Dyekman 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 Dyekman last inspected?

Dyekman was last inspected on July 31, 1980. 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.