Wayne County Roadgrade Dam 3-70-21

Wayne County Roadgrade Dam 3-70-21 is an earth dam located in Wayne County, Iowa, built in 1967. It carries a Low hazard potential classification.

About Wayne County Roadgrade Dam 3-70-21

Wayne County Roadgrade Dam 3-70-21 is a dam in Wayne, Iowa. The dam is owned by Wayne County Board Of Supervisors (local government). It impounds the Tr- Lost Branch near Rathbun Reservoir.

The dam stands 23 feet tall and stretches 484 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 62 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.

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Low HazardNot Rated ConditionEmergency Action Plan: Not Required

Location

StateIowa
CountyWayne
Nearest CityRathbun Reservoir
River/StreamTr- Lost Branch
Coordinates40.88000, -93.27000

Physical Characteristics

Dam TypeEarth
NID Height23 ft
Dam Height23 ft
Dam Length484 ft
Year Completed1967 (59 years old)

Storage & Hydraulics

NID Storage62 acre-ft
Max Storage62 acre-ft
Normal Storage16 acre-ft
Surface Area3 acres
Drainage Area0 sq mi
Spillway TypeUncontrolled

Ownership & Safety

PurposeOther
OwnerWayne County Board of Supervisors
Owner TypeLocal Government
Hazard ClassificationLow
Condition AssessmentNot Rated
Emergency Action PlanNot Required

Identifiers

NID IDIA02697
Federal IDIA02697
More InfoState Dam Safety Program

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