Pilot Rock Subwtrshd Sta 30+40 #1-C

TR-LITTLE SIOUX RIVER· Cherokee, Iowa· Built 1963· Earth· 38 ft tall

Key Takeaway

Pilot Rock Subwtrshd Sta 30+40 #1-C is classified as low hazard in Iowa. It was completed in 1963 and is 63 years old. Its primary use is fire protection.

Physical Details

Dam Height 38 ft (taller than 80.1% in IA)
Dam Length259 ft
Dam TypeEarth
Max Storage40 acre-ft
Normal Storage20 acre-ft
Surface Area2 acres
Drainage Area0 sq mi
Max Discharge0 cfs
Year Completed1963 (63 years old)
NID IDIA00198

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: December 12, 1960
State Regulated: Yes
Regulatory Agency: IOWA DNR

Ownership

Cherokee County SWCD

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Pilot Rock Subwtrshd Sta 30+40 #1-C?

Pilot Rock Subwtrshd Sta 30+40 #1-C 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 Pilot Rock Subwtrshd Sta 30+40 #1-C?

Pilot Rock Subwtrshd Sta 30+40 #1-C is owned by Cherokee County SWCD (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Pilot Rock Subwtrshd Sta 30+40 #1-C built?

Pilot Rock Subwtrshd Sta 30+40 #1-C was completed in 1963, making it 63 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 Pilot Rock Subwtrshd Sta 30+40 #1-C?

Pilot Rock Subwtrshd Sta 30+40 #1-C 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 Pilot Rock Subwtrshd Sta 30+40 #1-C?

Pilot Rock Subwtrshd Sta 30+40 #1-C 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.

When was Pilot Rock Subwtrshd Sta 30+40 #1-C last inspected?

Pilot Rock Subwtrshd Sta 30+40 #1-C was last inspected on December 12, 1960. 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.