Dd No 128 Reservoir Report

Last Updated: December 5, 2025

Dd No 128 is a local government-owned earth dam located in Neosho Rapids, Kansas, along the Taylor Creek-TR stream.


°F

°F

mph

Wind

%

Humidity

Summary

Built in 1987 by Miles Engineering, this dam serves the primary purpose of flood risk reduction, with a height of 18 feet and a length of 2400 feet. The dam has a storage capacity of 290.9 acre-feet, with a normal storage of 25.7 acre-feet and a drainage area of 0.45 square miles.

With a low hazard potential and a moderate risk assessment rating, Dd No 128 is considered to be in good condition and has not been rated for its current condition. The dam features an uncontrolled spillway with a width of 47 feet and no outlet gates. While it has not been inspected recently, the dam remains operational and plays a crucial role in managing flood risks in the area. For water resource and climate enthusiasts, Dd No 128 serves as an important infrastructure for flood control and protection in Lyon County, Kansas.

Year Completed

1987

Dam Length

2400

Dam Height

18

River Or Stream

TAYLOR CREEK-TR

Primary Dam Type

Earth

Surface Area

8.98

Drainage Area

0.45

Nid Storage

290.9

Outlet Gates

None

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

18
       
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.