Box Lake

BOX LAKE NORTH FORK PAYETTE RIVER· Valley, Idaho· Built 1935· 13 ft tall
Low Hazard Irrigation Private

Key Takeaway

Box Lake is classified as low hazard in Idaho. It was completed in 1935 and is 91 years old. Its primary use is irrigation.

Physical Details

Dam Height 13 ft (taller than 5.1% in ID)
Dam Length250 ft
Normal Storage476 acre-ft
Surface Area145 acres
Drainage Area1 sq mi
Max Discharge141 cfs
Year Completed1935 (91 years old)
Year Modified1977
NID IDID00271

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: October 10, 2017
State Regulated: Yes
Regulatory Agency: IDWR

Ownership

Private

Nearby Dams

Payette Lake Upper

Valley, ID

Significant Hazard 15 ft

Granite Lake

Valley, ID

Significant Hazard 25 ft

Little Payette Lake Dike

Valley, ID

Significant Hazard 11 ft

Little Payette Lake Main

Valley, ID

High Hazard 25 ft

Knox Meadow

Valley, ID

Significant Hazard 19 ft

Shaw Twins Upper

Valley, ID

Low Hazard 17 ft

Brundage

Adams, ID

High Hazard 63 ft

Payette Lake

Valley, ID

Significant Hazard 13 ft

Frequently Asked Questions

What is the hazard classification of Box Lake?

Box Lake 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 Box Lake?

Box Lake is owned by information not available (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Box Lake built?

Box Lake was completed in 1935, making it 91 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 Box Lake?

Box Lake serves the following purposes: Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Box Lake?

Box Lake 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 Box Lake last inspected?

Box Lake was last inspected on October 10, 2017. 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.