Hinrichs Dam

Hinrichs Dam is an earth dam located in Iowa County, Iowa, built in 1970. It carries a Low hazard potential classification.

Hazard potentialLowFailure would cause limited damage
ConditionNot assessed
Emergency action planNot reported
Last inspectionNot reported
Height32 ft
Built197056 years ago

Dam profile

NID height · 32 ft
32 FT TWO-STORY HOUSEMEDIAN U.S. DAM · 24 FT

32 ft tall and 543 ft long, taller than 74% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.

About Hinrichs Dam

The primary purpose of Hinrichs 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 George C Hinrichs (private). It impounds the Tr-north English River near Riverside.

The dam stands 32 feet tall and stretches 543 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 63 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1970, 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.

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Location

StateIowa
CountyIowa
Nearest CityRiverside
River/StreamTr-north English River
Coordinates41.61030, -92.28320

Physical Characteristics

Dam TypeEarth
NID Height32 ft
Dam Height32 ft
Dam Length543 ft
Year Completed1970 (56 years old)

Storage & Hydraulics

NID Storage63 acre-ft
Max Storage63 acre-ft
Normal Storage25 acre-ft
Surface Area7 acres
Drainage Area0 sq mi
Spillway TypeUncontrolled

Ownership & Safety

PurposeFire Protection, Stock, Or Small Fish Pond
OwnerGeorge C Hinrichs
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentNot assessed
Emergency Action PlanNot Required

Identifiers

NID IDIA00518
Federal IDIA00518
More InfoState Dam Safety Program