East Fork Grand River Watershed Site A-53

East Fork Grand River Watershed Site A-53 is an earth dam located in Union County, Iowa, built in 2008. It carries a Low hazard potential classification.

Hazard potentialLowFailure would cause limited damage
ConditionNot assessed
Emergency action planNot reported
Last inspectionNot reported
Height23 ft
Built200818 years ago

Dam profile

NID height · 23 ft
23 FT TWO-STORY HOUSEMEDIAN U.S. DAM · 24 FT

23 ft tall and 594 ft long. 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 East Fork Grand River Watershed Site A-53

The primary purpose of East Fork Grand River Watershed Site A-53 is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Union County Swcd (local government). It impounds the Tr- East Fork Grand River near State of Missouri.

The dam stands 23 feet tall and stretches 594 feet across, creates a reservoir covering 6 acres, has a maximum storage capacity of 94 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 2008, the structure is relatively new.

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
CountyUnion
Nearest CityState of Missouri
River/StreamTr- East Fork Grand River
Coordinates40.91440, -94.13410

Physical Characteristics

Dam TypeEarth
NID Height23 ft
Dam Height23 ft
Dam Length594 ft
Year Completed2008 (18 years old)

Storage & Hydraulics

NID Storage94 acre-ft
Max Storage94 acre-ft
Normal Storage27 acre-ft
Surface Area6 acres
Drainage Area0 sq mi
Spillway TypeUncontrolled

Ownership & Safety

PurposeFlood Risk Reduction
OwnerUnion County Swcd
Owner TypeLocal Government
Hazard ClassificationLow
Condition AssessmentNot assessed
Emergency Action PlanNot Required

Identifiers

NID IDIA03826
Federal IDIA03826
More InfoState Dam Safety Program