Big Whiskey 1 Subwatershed Site 3-1

Big Whiskey 1 Subwatershed Site 3-1 is an earth dam located in Woodbury County, Iowa, built in 1968. It carries a Significant hazard potential classification and has a fair condition assessment.

About Big Whiskey 1 Subwatershed Site 3-1

The primary purpose of Big Whiskey 1 Subwatershed Site 3-1 is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Woodbury County Swcd (local government). It impounds the Tr-whiskey Creek near Bronson.

The dam stands 38 feet tall and stretches 679 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 52 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1968, 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. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 07/24/2024.

At 38 feet, this dam is taller than 85% of dams nationwide.

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Significant HazardFair ConditionEmergency Action Plan: Not Required

Location

StateIowa
CountyWoodbury
Nearest CityBronson
River/StreamTr-whiskey Creek
Coordinates42.49160, -96.25680

Physical Characteristics

Dam TypeEarth
NID Height38 ft
Dam Height38 ft
Dam Length679 ft
Year Completed1968 (58 years old)

Storage & Hydraulics

NID Storage52 acre-ft
Max Storage52 acre-ft
Normal Storage31 acre-ft
Surface Area3 acres
Drainage Area0 sq mi
Spillway TypeUncontrolled

Ownership & Safety

PurposeFire Protection, Stock, Or Small Fish Pond
OwnerWoodbury County SWCD
Owner TypeLocal Government
Hazard ClassificationSignificant
Condition AssessmentFair
Last Inspection07/24/2024
Emergency Action PlanNot Required

Identifiers

NID IDIA01195
Federal IDIA01195
More InfoState Dam Safety Program

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