Pine Cone No. 1

PINE CREEK· Carbon, Wyoming· Built 1976· Earth· 30 ft tall
Low Hazard Irrigation Private

Key Takeaway

Pine Cone No. 1 is classified as low hazard in Wyoming. It was completed in 1976 and is 50 years old. Its primary use is irrigation.

Physical Details

Dam Height 30 ft (taller than 63.1% in WY)
Dam Length900 ft
Dam TypeEarth
Max Storage585 acre-ft
Normal Storage430 acre-ft
Surface Area31 acres
Drainage Area0 sq mi
Max Discharge0 cfs
Year Completed1976 (50 years old)
NID IDWY00417

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: August 22, 2023
State Regulated: Yes
Regulatory Agency: SEO

Ownership

LES & SHELLY DUNMIRE

Private

Nearby Dams

Pine Creek

Carbon, WY

Low Hazard 30 ft

Pine Cone No. 2

Carbon, WY

Low Hazard 39 ft

White

Carbon, WY

Low Hazard 31 ft

Mary No. 1

Carbon, WY

Low Hazard 38 ft

Pierce

Carbon, WY

Significant Hazard 30 ft

Bosler

Carbon, WY

Low Hazard 18 ft

Little Pierce

Albany, WY

Low Hazard 24 ft

Seepage

Carbon, WY

Low Hazard 16 ft

Frequently Asked Questions

What is the hazard classification of Pine Cone No. 1?

Pine Cone 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 Pine Cone No. 1?

Pine Cone No. 1 is owned by LES & SHELLY DUNMIRE (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Pine Cone No. 1 built?

Pine Cone No. 1 was completed in 1976, making it 50 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 Pine Cone No. 1?

Pine Cone 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 Pine Cone No. 1?

Pine Cone No. 1 has a dam height of 30 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 Pine Cone No. 1 last inspected?

Pine Cone No. 1 was last inspected on August 22, 2023. 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.