Mill Picayune Watershed Site M-22-13

TR-MILL CREEK· Shelby, Iowa· Built 1978· Earth· 38 ft tall

Low Hazard Fire Protection Stock Or Small Fish Pond Flood Risk Reduction Local Government

Key Takeaway

Mill Picayune Watershed Site M-22-13 is classified as low hazard in Iowa. It was completed in 1978 and is 48 years old. Its primary use is fire protection.

Physical Details

Dam Height	38 ft (taller than 80.1% in IA)
Dam Length	550 ft
Dam Type	Earth
Max Storage	59 acre-ft
Normal Storage	21 acre-ft

Surface Area	3 acres
Drainage Area	0 sq mi
Max Discharge	0 cfs
Year Completed	1978 (48 years old)
NID ID	IA01984

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

State Regulated: Yes

Regulatory Agency: IOWA DNR

Ownership

Shelby County SWCD

Local Government

Nearby Dams

Mill Picayune Watershed Site M-22-1

Shelby, IA

Low Hazard 34 ft

Mill Picayune Watershed Site M-22-12

Shelby, IA

Low Hazard 45 ft

Mill Picayune Watershed Site M-22-6

Shelby, IA

Low Hazard 50 ft

Mill Picayune Watershed Site M-22-3

Shelby, IA

Significant Hazard 37 ft

Mill Picayune Watershed Site M-18-4

Shelby, IA

Low Hazard 48 ft

Mill Picayune Watershed Site P-1

Shelby, IA

Low Hazard 41 ft

Mill Picayune Watershed Site P-92-1

Shelby, IA

Low Hazard 51 ft

Mill Picayune Watershed Site P-79-1

Shelby, IA

Low Hazard 46 ft

Frequently Asked Questions

What is the hazard classification of Mill Picayune Watershed Site M-22-13?

Mill Picayune Watershed Site M-22-13 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 Mill Picayune Watershed Site M-22-13?

Mill Picayune Watershed Site M-22-13 is owned by Shelby County SWCD (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Mill Picayune Watershed Site M-22-13 built?

Mill Picayune Watershed Site M-22-13 was completed in 1978, making it 48 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 Mill Picayune Watershed Site M-22-13?

Mill Picayune Watershed Site M-22-13 serves the following purposes: Fire Protection, Stock, Or Small Fish Pond, Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Mill Picayune Watershed Site M-22-13?

Mill Picayune Watershed Site M-22-13 has a dam height of 38 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.

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.