Cheesman

SOUTH PLATTE RIVER· Jefferson, Colorado· Built 1905· Masonry· 221 ft tall
High Hazard Water Supply Public Utility

Key Takeaway

Cheesman is classified as high hazard in Colorado. It was completed in 1905 and is 121 years old. Its primary use is water supply. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.

Physical Details

Dam Height 221 ft (taller than 99% in CO)
Dam Length710 ft
Dam TypeMasonry
Max Storage87.2K acre-ft
Normal Storage79.1K acre-ft
Surface Area874 acres
Drainage Area1,750 sq mi
Max Discharge8,571 cfs
Year Completed1905 (121 years old)
NID IDCO00357

Safety Information

High Hazard

Loss of human life is likely if the dam fails.

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

Emergency Action Plan: Yes
Last Inspection: May 4, 2022
State Regulated: Yes
Regulatory Agency: DWR

Ownership

DENVER BOARD OF WATER COMMISSIONERS

Public Utility

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Cheesman?

Cheesman is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Cheesman?

Cheesman is owned by DENVER BOARD OF WATER COMMISSIONERS (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Cheesman built?

Cheesman was completed in 1905, making it 121 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 Cheesman?

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

How tall is Cheesman?

Cheesman has a dam height of 221 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 Cheesman last inspected?

Cheesman was last inspected on May 4, 2022. 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.