Castle Rock Dam

Cannonball River-TR· Hettinger, North Dakota· Built 1969· Earth· 18 ft tall
Low Hazard Recreation Private

Key Takeaway

Castle Rock Dam is classified as low hazard in North Dakota. It was completed in 1969 and is 57 years old. Its primary use is recreation.

Physical Details

Dam Height 18 ft (taller than 60.6% in ND)
Dam Length818 ft
Dam TypeEarth
Max Storage184 acre-ft
Normal Storage75 acre-ft
Surface Area14 acres
Drainage Area3 sq mi
Year Completed1969 (57 years old)
NID IDND00261

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: April 20, 1982
State Regulated: Yes
Regulatory Agency: ND DWR

Ownership

Louise & Larry Roemmich

Private

Nearby Dams

Wallace Dam; Charles 2

Hettinger, ND

Low Hazard 12 ft

Mott City Dam

Hettinger, ND

Low Hazard 18 ft

Mott Watershed Dam

Hettinger, ND

High Hazard 39 ft

Wallace Dam; Charles 1

Hettinger, ND

Low Hazard 12 ft

Blickensderfer Dam; Paul

Hettinger, ND

Low Hazard 23 ft

Schneider Dam; Ervin

Hettinger, ND

Low Hazard 8 ft

Ziegler Dam; John

Hettinger, ND

Low Hazard 15 ft

Wallace Dam; Chuck Jr 3

Adams, ND

Low Hazard 7 ft

Frequently Asked Questions

What is the hazard classification of Castle Rock Dam?

Castle Rock Dam 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 Castle Rock Dam?

Castle Rock Dam is owned by Louise & Larry Roemmich (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Castle Rock Dam built?

Castle Rock Dam 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 Castle Rock Dam?

Castle Rock Dam 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 Castle Rock Dam?

Castle Rock Dam has a dam height of 18 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 Castle Rock Dam last inspected?

Castle Rock Dam was last inspected on April 20, 1982. 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.