St. Joseph River (In-Channel) Dam

ST. JOSEPH RIVER· Allen, Indiana· Built 1933· Concrete· 10 ft tall
Significant Hazard Water Supply Local Government

Key Takeaway

St. Joseph River (In-Channel) Dam is classified as significant hazard in Indiana. It was completed in 1933 and is 93 years old. Its primary use is water supply. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 10 ft (taller than 2.2% in IN)
Dam Length225 ft
Dam TypeConcrete
Max Storage874 acre-ft
Normal Storage874 acre-ft
Surface Area30 acres
Drainage Area1,060 sq mi
Max Discharge11,985 cfs
Year Completed1933 (93 years old)
NID IDIN00811

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 19, 2018
State Regulated: Yes
Regulatory Agency: IDNR

Ownership

CITY OF FORT WAYNE

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of St. Joseph River (In-Channel) Dam?

St. Joseph River (In-Channel) 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 St. Joseph River (In-Channel) Dam?

St. Joseph River (In-Channel) Dam is owned by CITY OF FORT WAYNE (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was St. Joseph River (In-Channel) Dam built?

St. Joseph River (In-Channel) Dam was completed in 1933, making it 93 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 St. Joseph River (In-Channel) Dam?

St. Joseph River (In-Channel) Dam serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is St. Joseph River (In-Channel) Dam?

St. Joseph River (In-Channel) Dam has a dam height of 10 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 St. Joseph River (In-Channel) Dam last inspected?

St. Joseph River (In-Channel) Dam was last inspected on April 19, 2018. 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.