Agate No 1

EAST BIJOU CREEK-TR· Elbert, Colorado· Built 1890· Earth· 18 ft tall
Low Hazard Irrigation Private

Key Takeaway

Agate No 1 is classified as low hazard in Colorado. It was completed in 1890 and is 136 years old. Its primary use is irrigation.

Physical Details

Dam Height 18 ft (taller than 29.2% in CO)
Dam Length4,100 ft
Dam TypeEarth
Max Storage3.4K acre-ft
Normal Storage2.8K acre-ft
Surface Area286 acres
Drainage Area25 sq mi
Max Discharge5,528 cfs
Year Completed1890 (136 years old)
NID IDCO00002

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: February 16, 2017
State Regulated: Yes
Regulatory Agency: DWR

Ownership

MCCARTY, LARRY (LARRY MCCARTY)

Private

Nearby Dams

M. H. No 2 - East Dam

Elbert, CO

Low Hazard 14 ft

M.H. No. 2 - North Dam

Elbert, CO

Low Hazard 10 ft

M. H.

Elbert, CO

Low Hazard 19 ft

Ehmann, Frank Det. #2

Elbert, CO

Low Hazard 23 ft

Frequently Asked Questions

What is the hazard classification of Agate No 1?

Agate No 1 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 Agate No 1?

Agate No 1 is owned by MCCARTY, LARRY (LARRY MCCARTY) (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Agate No 1 built?

Agate No 1 was completed in 1890, making it 136 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 Agate No 1?

Agate No 1 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 Agate No 1?

Agate No 1 has a dam height of 18 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 Agate No 1 last inspected?

Agate No 1 was last inspected on February 16, 2017. 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.