J-Ditch Effluent Lagoon

UNNAMED STREAM NORTH FORK PAYETTE RIVER· Valley, Idaho· Built 2001· 42 ft tall
High Hazard Other Local Government

Key Takeaway

J-Ditch Effluent Lagoon is classified as high hazard in Idaho. It was completed in 2001 and is 25 years old. Its primary use is other. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.

Physical Details

Dam Height 42 ft (taller than 72.8% in ID)
Dam Length3,858 ft
Normal Storage645 acre-ft
Surface Area22 acres
Drainage Area0 sq mi
Max Discharge0 cfs
Year Completed2001 (25 years old)
NID IDID00493

Safety Information

High Hazard

Loss of human life is likely if the dam fails.

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

Emergency Action Plan: Yes
Last Inspection: September 15, 2020
State Regulated: Yes
Regulatory Agency: IDWR

Ownership

Local Government

Nearby Dams

Rio Vista

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Significant Hazard 20 ft

Payette Lake

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Significant Hazard 13 ft

Blackhawk Lake

Valley, ID

Significant Hazard 45 ft

Little Payette Lake Main

Valley, ID

High Hazard 25 ft

Knox Meadow

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Significant Hazard 19 ft

Hancock

Adams, ID

Significant Hazard 29 ft

Soulen Family Dam

Valley, ID

Low Hazard 22 ft

Little Payette Lake Dike

Valley, ID

Significant Hazard 11 ft

Frequently Asked Questions

What is the hazard classification of J-Ditch Effluent Lagoon?

J-Ditch Effluent Lagoon is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates J-Ditch Effluent Lagoon?

J-Ditch Effluent Lagoon is owned by information not available (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was J-Ditch Effluent Lagoon built?

J-Ditch Effluent Lagoon was completed in 2001, making it 25 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 J-Ditch Effluent Lagoon?

J-Ditch Effluent Lagoon 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 J-Ditch Effluent Lagoon?

J-Ditch Effluent Lagoon has a dam height of 42 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 J-Ditch Effluent Lagoon last inspected?

J-Ditch Effluent Lagoon was last inspected on September 15, 2020. 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.