Poro

JUG CREEK LOUIE CREEK· Valley, Idaho· Built 1947· 22 ft tall
Low Hazard Irrigation Private

Key Takeaway

Poro is classified as low hazard in Idaho. It was completed in 1947 and is 79 years old. Its primary use is irrigation.

Physical Details

Dam Height 22 ft (taller than 34.7% in ID)
Dam Length220 ft
Normal Storage59 acre-ft
Surface Area9 acres
Drainage Area4 sq mi
Max Discharge178 cfs
Year Completed1947 (79 years old)
Year Modified1987
NID IDID00120

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: July 23, 2019
State Regulated: Yes
Regulatory Agency: IDWR

Ownership

Private

Nearby Dams

Jug Creek Upper

Valley, ID

Significant Hazard 32 ft

Jughandle Estates

Valley, ID

Significant Hazard 28 ft

Boulder Meadow

Valley, ID

Significant Hazard 35 ft

Louie Lake

Valley, ID

Low Hazard 18 ft

Hollenbeak

Valley, ID

Low Hazard 29 ft

Jussila Bow

Valley, ID

Significant Hazard 23 ft

Little Payette Lake Dike

Valley, ID

Significant Hazard 11 ft

Knox Meadow

Valley, ID

Significant Hazard 19 ft

Frequently Asked Questions

What is the hazard classification of Poro?

Poro 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 Poro?

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

When was Poro built?

Poro was completed in 1947, making it 79 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 Poro?

Poro 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 Poro?

Poro has a dam height of 22 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 Poro last inspected?

Poro was last inspected on July 23, 2019. 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.