Ulmer Lake

TR-LITTLE PORCUPINE CREEK· Rosebud, Montana· Built 1953· Earth· 20 ft tall

Key Takeaway

Ulmer Lake is classified as low hazard in Montana. It was completed in 1953 and is 73 years old. Its primary use is fire protection.

Physical Details

Dam Height 20 ft (taller than 44.5% in MT)
Dam Length600 ft
Dam TypeEarth
Max Storage1.5K acre-ft
Normal Storage750 acre-ft
Drainage Area4 sq mi
Max Discharge2,200 cfs
Year Completed1953 (73 years old)
NID IDMT00026

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
State Regulated: Yes
Regulatory Agency: DNRC

Ownership

VT RANCH INC

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Ulmer Lake?

Ulmer Lake 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 Ulmer Lake?

Ulmer Lake is owned by VT RANCH INC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Ulmer Lake built?

Ulmer Lake was completed in 1953, making it 73 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 Ulmer Lake?

Ulmer Lake serves the following purposes: Fire Protection, Stock, Or Small Fish Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Ulmer Lake?

Ulmer Lake has a dam height of 20 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.

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.