Mulligan

ST. VRAIN CREEK-OS· Weld, Colorado· Built 1878· Earth· 10 ft tall
Low Hazard Recreation Private

Key Takeaway

Mulligan is classified as low hazard in Colorado. It was completed in 1878 and is 148 years old. Its primary use is recreation.

Physical Details

Dam Height 10 ft (taller than 4.4% in CO)
Dam Length700 ft
Dam TypeEarth
Max Storage84 acre-ft
Normal Storage51 acre-ft
Surface Area13 acres
Drainage Area0 sq mi
Max Discharge193 cfs
Year Completed1878 (148 years old)
NID IDCO01235

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: November 3, 1999
State Regulated: Yes
Regulatory Agency: DWR

Ownership

MULLIGAN LAKE ESTATES HOMEOWNERS ASSOCIATION (ALYC

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Mulligan?

Mulligan 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 Mulligan?

Mulligan is owned by MULLIGAN LAKE ESTATES HOMEOWNERS ASSOCIATION (ALYC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Mulligan built?

Mulligan was completed in 1878, making it 148 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 Mulligan?

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

How tall is Mulligan?

Mulligan has a dam height of 10 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 Mulligan last inspected?

Mulligan was last inspected on November 3, 1999. 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.