Marshall Millpond Dam

HERRING BRANCH· Sussex, Delaware· Gravity· 14 ft tall
Significant Hazard Recreation State Government

Key Takeaway

Marshall Millpond Dam is classified as significant hazard in Delaware. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 14 ft (taller than 50% in DE)
Dam Length440 ft
Dam TypeGravity
Max Storage169 acre-ft
Normal Storage126 acre-ft
Surface Area12 acres
Drainage Area7 sq mi
Max Discharge550 cfs
NID IDDE00093

Safety Information

Significant Hazard

No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: Yes
Last Inspection: May 19, 2022
State Regulated: Yes
Regulatory Agency: DNREC

Ownership

DELDOT

State Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Marshall Millpond Dam?

Marshall Millpond Dam is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Marshall Millpond Dam?

Marshall Millpond Dam is owned by DELDOT (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Marshall Millpond Dam?

Marshall Millpond 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 Marshall Millpond Dam?

Marshall Millpond Dam has a dam height of 14 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 Marshall Millpond Dam last inspected?

Marshall Millpond Dam was last inspected on May 19, 2022. 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.