Iowa Noname60

Iowa Noname60 is an earth dam located in Woodbury County, Iowa, built in 1964. It carries a Significant hazard potential classification.

About Iowa Noname60

The primary purpose of Iowa Noname60 is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Sergeant Floyd Area Council Boy Scouts Of America (private). It impounds the Tr-big Sioux River near Sioux City.

The dam stands 29 feet tall and stretches 474 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 71 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1964, the structure is well into its service life at over 50 years old.

This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life.

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Significant HazardNot Rated ConditionEmergency Action Plan: Not Required

Location

StateIowa
CountyWoodbury
Nearest CitySioux City
River/StreamTr-big Sioux River
Coordinates42.55180, -96.47380

Physical Characteristics

Dam TypeEarth
NID Height29 ft
Dam Height29 ft
Dam Length474 ft
Year Completed1964 (62 years old)

Storage & Hydraulics

NID Storage71 acre-ft
Max Storage71 acre-ft
Normal Storage40 acre-ft
Surface Area4 acres
Drainage Area0 sq mi
Spillway TypeUncontrolled

Ownership & Safety

PurposeRecreation
OwnerSergeant Floyd Area Council Boy Scouts of America
Owner TypePrivate
Hazard ClassificationSignificant
Condition AssessmentNot Rated
Emergency Action PlanNot Required

Identifiers

NID IDIA01250
Federal IDIA01250
More InfoState Dam Safety Program

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