Rockingham Cnty Wastewtr Lagoon Dam

NA· Rockingham, New Hampshire· Built 1990· Earth· 13 ft tall
Significant Hazard Other Local Government

Key Takeaway

Rockingham Cnty Wastewtr Lagoon Dam is classified as significant hazard in New Hampshire. It was completed in 1990 and is 36 years old. Its primary use is other. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 13 ft (taller than 36.5% in NH)
Dam Length1,920 ft
Dam TypeEarth
Max Storage63 acre-ft
Normal Storage63 acre-ft
Surface Area5 acres
Drainage Area0 sq mi
Max Discharge0 cfs
Year Completed1990 (36 years old)
Year Modified2002
NID IDNH01027

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: No
Last Inspection: April 14, 2022
State Regulated: Yes
Regulatory Agency: NH DES

Ownership

ROCKINGHAM COUNTY COMPLEX

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Rockingham Cnty Wastewtr Lagoon Dam?

Rockingham Cnty Wastewtr Lagoon 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 Rockingham Cnty Wastewtr Lagoon Dam?

Rockingham Cnty Wastewtr Lagoon Dam is owned by ROCKINGHAM COUNTY COMPLEX (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Rockingham Cnty Wastewtr Lagoon Dam built?

Rockingham Cnty Wastewtr Lagoon Dam was completed in 1990, making it 36 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 Rockingham Cnty Wastewtr Lagoon Dam?

Rockingham Cnty Wastewtr Lagoon Dam serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Rockingham Cnty Wastewtr Lagoon Dam?

Rockingham Cnty Wastewtr Lagoon Dam has a dam height of 13 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 Rockingham Cnty Wastewtr Lagoon Dam last inspected?

Rockingham Cnty Wastewtr Lagoon Dam was last inspected on April 14, 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.