Riddle

A· Larimer, Colorado· Built 1953· Earth· 25 ft tall
Low Hazard Private

Key Takeaway

Riddle is classified as low hazard in Colorado. It was completed in 1953 and is 73 years old.

Physical Details

Dam Height 25 ft (taller than 53.1% in CO)
Dam Length480 ft
Dam TypeEarth
Normal Storage16 acre-ft
Surface Area4 acres
Drainage Area6 sq mi
Max Discharge0 cfs
Year Completed1953 (73 years old)
NID IDCO03001

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 13, 2018
State Regulated: Yes
Regulatory Agency: DWR

Ownership

GLACIER VIEW MEADOWS (LARRY MAYBON)

Private

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Frequently Asked Questions

What is the hazard classification of Riddle?

Riddle 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 Riddle?

Riddle is owned by GLACIER VIEW MEADOWS (LARRY MAYBON) (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Riddle built?

Riddle was completed in 1953, making it 73 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.

How tall is Riddle?

Riddle 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 Riddle last inspected?

Riddle was last inspected on July 13, 2018. 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.