I. Molstad

TR MISSOURI· Dewey, South Dakota· Built 1969· Earth· 23 ft tall
Low Hazard Fire Protection Stock Or Small Fish Pond Private

Key Takeaway

I. Molstad is classified as low hazard in South Dakota. It was completed in 1969 and is 57 years old. Its primary use is fire protection.

Physical Details

Dam Height 23 ft (taller than 49.8% in SD)
Dam Length520 ft
Dam TypeEarth
Max Storage110 acre-ft
Normal Storage50 acre-ft
Max Discharge2,040 cfs
Year Completed1969 (57 years old)
NID IDSD00901

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: DANR

Ownership

I. MOLSTAD

Private

Nearby Dams

G. Hand

Dewey, SD

Low Hazard 17 ft

H. Chamberlin

Dewey, SD

Low Hazard 22 ft

Hand

Dewey, SD

Low Hazard 17 ft

H. Harrison

Dewey, SD

Low Hazard 19 ft

Mortenson Dam

Walworth, SD

Low Hazard 27 ft

A.W. Spiry

Walworth, SD

Low Hazard 26 ft

Lindia Sattler

Walworth, SD

Low Hazard 27 ft

A.W. Spiry

Walworth, SD

Low Hazard 25 ft

Frequently Asked Questions

What is the hazard classification of I. Molstad?

I. Molstad 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 I. Molstad?

I. Molstad is owned by I. MOLSTAD (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was I. Molstad built?

I. Molstad was completed in 1969, making it 57 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 I. Molstad?

I. Molstad 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 I. Molstad?

I. Molstad has a dam height of 23 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.