Frd No 31

Frd No 31 is an earth dam located in Douglas County, Kansas, built in 1971. It carries a High hazard potential classification and has a poor condition assessment.

About Frd No 31

The primary purpose of Frd No 31 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 Wakarusa Wjd No 35 (local government). It impounds the Wakarusa River-tr near Eudora.

The dam stands 51 feet tall and stretches 1,048 feet across, creates a reservoir covering 13 acres, has a maximum storage capacity of 720 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1971, the structure is well into its service life at over 50 years old.

This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. An emergency action plan is in place for this dam. The most recent inspection on record was 05/04/2022.

At 51 feet, this dam is taller than 93% of dams nationwide.

Living Downstream

If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Kansas dam safety program can provide more specific information about emergency planning for this structure.

Search for dams near your address to see all dams in your area with hazard classifications and safety data.

High HazardPoor ConditionEmergency Action Plan: Yes

Location

StateKansas
CountyDouglas
Nearest CityEudora
River/StreamWakarusa River-tr
Coordinates38.85121, -95.25803

Physical Characteristics

Dam TypeEarth
NID Height51 ft
Dam Height40 ft
Dam Length1,048 ft
Year Completed1971 (55 years old)

Storage & Hydraulics

NID Storage720 acre-ft
Max Storage720 acre-ft
Normal Storage86 acre-ft
Surface Area13 acres
Drainage Area1 sq mi
Max Discharge2,455 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeFlood Risk Reduction
OwnerWAKARUSA WJD NO 35
Owner TypeLocal Government
Hazard ClassificationHigh
Condition AssessmentPoor
Last Inspection05/04/2022
Emergency Action PlanYes

Identifiers

NID IDKS02258
Federal IDKS02258
More InfoState Dam Safety Program

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