Zysset Dam

Zysset Dam is an earth dam located in Frontier County, Nebraska, built in 1974. It carries a Low hazard potential classification and has a satisfactory condition assessment.

About Zysset Dam

The primary purpose of Zysset Dam 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 Mervin & Illa Jo Zysset Es (private). It impounds the Tr-medicine Creek near Cambridge.

The dam stands 24 feet tall and stretches 488 feet across, creates a reservoir covering 9 acres, has a maximum storage capacity of 139 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1974, 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 04/22/2019.

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Low HazardSatisfactory ConditionEmergency Action Plan: Not Required

Location

StateNebraska
CountyFrontier
Nearest CityCambridge
River/StreamTr-medicine Creek
Coordinates40.49198, -100.30251

Physical Characteristics

Dam TypeEarth
NID Height24 ft
Dam Height22 ft
Dam Length488 ft
Year Completed1974 (52 years old)

Storage & Hydraulics

NID Storage139 acre-ft
Max Storage139 acre-ft
Normal Storage42 acre-ft
Surface Area9 acres
Drainage Area1 sq mi
Max Discharge861 cfs

Ownership & Safety

PurposeFlood Risk Reduction
OwnerMervin & Illa Jo Zysset ES
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentSatisfactory
Last Inspection04/22/2019
Emergency Action PlanNot Required

Identifiers

NID IDNE01605
Federal IDNE01605
More InfoState Dam Safety Program

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