Frd No 3-7

Frd No 3-7 is an earth dam located in Lyon County, Kansas, built in 1971. It carries a Significant hazard potential classification and has a satisfactory condition assessment.

About Frd No 3-7

The primary purpose of Frd No 3-7 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 Upper Verdigris Wjd No 24 (local government). It impounds the Rock Creek near Madison.

The dam stands 51 feet tall and stretches 1,625 feet across, creates a reservoir covering 90 acres, has a maximum storage capacity of 6,698 acre-feet, and collects water from a drainage area of 17 square miles. Completed in 1971, the structure is well into its service life at over 50 years old.

This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 11/16/2018.

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

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Significant HazardSatisfactory ConditionEmergency Action Plan: Yes

Location

StateKansas
CountyLyon
Nearest CityMadison
River/StreamRock Creek
Coordinates38.19417, -96.23761

Physical Characteristics

Dam TypeEarth
NID Height51 ft
Dam Height51 ft
Dam Length1,625 ft
Year Completed1971 (55 years old)

Storage & Hydraulics

NID Storage6,698 acre-ft
Max Storage6,698 acre-ft
Normal Storage564 acre-ft
Surface Area90 acres
Drainage Area17 sq mi
Max Discharge5,520 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeFlood Risk Reduction
OwnerUPPER VERDIGRIS WJD NO 24
Owner TypeLocal Government
Hazard ClassificationSignificant
Condition AssessmentSatisfactory
Last Inspection11/16/2018
Emergency Action PlanYes

Identifiers

NID IDKS02358
Federal IDKS02358
More InfoState Dam Safety Program

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