Oak-middle 86-a

Oak-middle 86-a is an earth dam located in Seward County, Nebraska, built in 1963. It carries a Low hazard potential classification and has a satisfactory condition assessment.

About Oak-middle 86-a

The primary purpose of Oak-middle 86-a 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 Lower Platte South Natural Resources District (local government). It impounds the Tr-middle Oak Creek near Raymond.

The dam stands 37 feet tall and stretches 730 feet across, creates a reservoir covering 15 acres, has a maximum storage capacity of 384 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1963, 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. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 06/28/2021.

At 37 feet, this dam is taller than 84% of dams nationwide.

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Low HazardSatisfactory ConditionEmergency Action Plan: Not Required

Location

StateNebraska
CountySeward
Nearest CityRaymond
River/StreamTr-middle Oak Creek
Coordinates41.03232, -97.01021

Physical Characteristics

Dam TypeEarth
NID Height37 ft
Dam Height32 ft
Dam Length730 ft
Year Completed1963 (63 years old)

Storage & Hydraulics

NID Storage384 acre-ft
Max Storage384 acre-ft
Normal Storage87 acre-ft
Surface Area15 acres
Drainage Area1 sq mi
Max Discharge552 cfs

Ownership & Safety

PurposeFlood Risk Reduction
OwnerLower Platte South Natural Resources District
Owner TypeLocal Government
Hazard ClassificationLow
Condition AssessmentSatisfactory
Last Inspection06/28/2021
Emergency Action PlanNot Required

Identifiers

NID IDNE00075
Federal IDNE00075
More InfoState Dam Safety Program

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