Long Branch 73

Long Branch 73 is an earth dam located in Richardson County, Nebraska, built in 1981. It carries a Low hazard potential classification and has a satisfactory condition assessment.

About Long Branch 73

The primary purpose of Long Branch 73 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 Nemaha Natural Resources District (local government). It impounds the Tr-long Branch Creek near Humboldt.

The dam stands 35 feet tall and stretches 687 feet across, creates a reservoir covering 17 acres, has a maximum storage capacity of 496 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1981, the structure is 45 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 05/18/2023.

At 35 feet, this dam is taller than 82% of dams nationwide.

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Low HazardSatisfactory ConditionEmergency Action Plan: Not Required

Location

StateNebraska
CountyRichardson
Nearest CityHumboldt
River/StreamTr-long Branch Creek
Coordinates40.23796, -95.98460

Physical Characteristics

Dam TypeEarth
NID Height35 ft
Dam Height34 ft
Dam Length687 ft
Year Completed1981 (45 years old)

Storage & Hydraulics

NID Storage496 acre-ft
Max Storage496 acre-ft
Normal Storage103 acre-ft
Surface Area17 acres
Drainage Area1 sq mi
Max Discharge454 cfs

Ownership & Safety

PurposeFlood Risk Reduction
OwnerNemaha Natural Resources District
Owner TypeLocal Government
Hazard ClassificationLow
Condition AssessmentSatisfactory
Last Inspection05/18/2023
Emergency Action PlanNot Required

Identifiers

NID IDNE01816
Federal IDNE01816
More InfoState Dam Safety Program

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