Dd No 17 (Nedwed) Reservoir Report

Last Updated: December 5, 2025

Dd No 17 (Nedwed), also known as Rock Creek Watershed Dam No 17, is a local government-owned structure in Pottawatomie, Kansas, designed by USDA NRCS.


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Summary

This earth dam, with a height of 32 feet, serves the primary purpose of flood risk reduction in the Wilson Creek watershed. Situated in Louisville, it has a spillway width of 69 feet and a maximum discharge capacity of 490 cubic feet per second. The dam has a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment.

The dam has a storage capacity of 95 acre-feet and a normal storage level of 21 acre-feet, covering a surface area of 4 acres. While the risk assessment for Dd No 17 is moderate, it has not been assigned a DSAC date yet. The structure, with a hydraulic height of 28 feet, plays a crucial role in managing floodwaters in the region. The Kansas Dept. of Agriculture regulates and inspects the dam, ensuring its operational effectiveness and safety for the surrounding community.

Despite its low hazard potential, Dd No 17 (Nedwed) remains a vital component of the flood risk reduction efforts in the area. With its strategic location and design features, the dam continues to mitigate potential flooding events along the Wilson Creek watershed. As water resource and climate enthusiasts, understanding the significance of structures like Dd No 17 is essential in safeguarding communities and natural resources from the impacts of extreme weather events.

Dam Length

740

Dam Height

32

River Or Stream

WILSON CREEK-TR

Primary Dam Type

Earth

Surface Area

4

Hydraulic Height

28

Nid Storage

95

Structural Height

32

Outlet Gates

None

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

32
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.

Hazard Potential Classification

High
Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.