SNOFLO



FRD NO 69

RESERVOIR LEVELS
Unlisted/Unknown Dam Irish Creek-Tr
April 8, 2025


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Frd No 69, also known as Upper Black Vermillion WS Dam 69, is a locally-owned Earth-type dam in Lillis, Kansas. Built in 1969 by USDA NRCS for Flood Risk Reduction along the Irish Creek-TR, this 26-foot high structure spans 710 feet and provides a storage capacity of 106.28 acre-feet. Despite its low hazard potential and moderate risk assessment, the dam remains in "Not Rated" condition as of the last assessment.

Located in Marshall County, Kansas, Frd No 69 serves as a crucial flood risk mitigation tool for the community. With a normal storage capacity of 21 acre-feet and a surface area of 4.07 acres, this dam plays a vital role in protecting the area from potential flooding events. While it currently lacks a formal emergency action plan and detailed risk management measures, the dam's design and construction by the Natural Resources Conservation Service ensures its structural integrity and effectiveness in flood control.

Managed by local government authorities, Frd No 69 is not regulated, permitted, or inspected by state agencies. However, its strategic location and design features, such as an uncontrolled spillway with a width of 40 feet, contribute to its overall functionality and efficiency in flood risk reduction. As water resource and climate enthusiasts continue to monitor and evaluate the dam's performance, its importance in safeguarding the community against flooding events remains paramount.

Year_Completed 1969
Dam_Height 26
River_Or_Stream IRISH CREEK-TR
Dam_Length 710
Primary_Dam_Type Earth
Surface_Area 4.07
Hydraulic_Height 23
Drainage_Area 0.37
Nid_Storage 106.28
Structural_Height 26
Outlet_Gates None
Hazard_Potential Low
Foundations Unlisted/Unknown
Nid_Height 26
       

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