Platte Canyon

LITTLE WILLOW CREEK-OS· Jefferson, Colorado· Built 1904· Earth· 30 ft tall
Low Hazard Water Supply Public Utility

Key Takeaway

Platte Canyon is classified as low hazard in Colorado. It was completed in 1904 and is 122 years old. Its primary use is water supply.

Physical Details

Dam Height 30 ft (taller than 65.6% in CO)
Dam Length3,437 ft
Dam TypeEarth
Max Storage1.2K acre-ft
Normal Storage963 acre-ft
Surface Area57 acres
Drainage Area4 sq mi
Max Discharge1,470 cfs
Year Completed1904 (122 years old)
NID IDCO01814

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 26, 2020
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 Platte Canyon?

Platte Canyon 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 Platte Canyon?

Platte Canyon 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 Platte Canyon built?

Platte Canyon was completed in 1904, making it 122 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 Platte Canyon?

Platte Canyon 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 Platte Canyon?

Platte Canyon 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 Platte Canyon last inspected?

Platte Canyon was last inspected on August 26, 2020. 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.