Hess Dam

Hess Dam is an earth dam located in Guthrie County, Iowa, built in 1967. It carries a Low hazard potential classification.

About Hess Dam

The primary purpose of Hess Dam 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 Harris Hess (private). It impounds the Tr-middle Raccoon River near Lake Panorama.

The dam stands 21 feet tall and stretches 450 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 60 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1967, the structure is well into its service life at over 50 years old.

This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. The most recent inspection on record was 06/23/1986. That was over 39 years ago.

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Low HazardNot Rated ConditionEmergency Action Plan: Not Required

Location

StateIowa
CountyGuthrie
Nearest CityLake Panorama
River/StreamTr-middle Raccoon River
Coordinates41.77990, -94.54730

Physical Characteristics

Dam TypeEarth
NID Height21 ft
Dam Height21 ft
Dam Length450 ft
Year Completed1967 (59 years old)

Storage & Hydraulics

NID Storage60 acre-ft
Max Storage60 acre-ft
Normal Storage22 acre-ft
Surface Area4 acres
Drainage Area0 sq mi
Spillway TypeUncontrolled

Ownership & Safety

PurposeFire Protection, Stock, Or Small Fish Pond
OwnerHarris Hess
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentNot Rated
Last Inspection06/23/1986
Emergency Action PlanNot Required

Identifiers

NID IDIA00416
Federal IDIA00416
More InfoState Dam Safety Program

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