Dd No 102 Reservoir Report

Last Updated: December 5, 2025

Dd No 102, also known as Allen Creek Watershed Dam No 102, is a local government-owned earth dam located in Lyon County, Kansas.


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Summary

Designed by USDA NRCS and completed in 2003, this dam serves the primary purpose of flood risk reduction along Troublesome Creek-TR. With a height of 24 feet and a length of 1380 feet, Dd No 102 has a storage capacity of 211.6 acre-feet and a normal storage of 61 acre-feet.

Despite being classified as having a low hazard potential and not yet assessed for condition, Dd No 102 presents a moderate risk level of 3. With an uncontrolled spillway width of 81 feet and a maximum discharge of 518 cfs, this dam plays a crucial role in managing water flow in the area. While it has not been inspected since June 2004, the dam's emergency action plan status, risk management measures, and inundation maps preparedness remain unknown.

Overall, Dd No 102 stands as a vital infrastructure in the Allen Creek Watershed, providing flood risk reduction services to the surrounding community in Americus, Kansas. Water resource and climate enthusiasts can appreciate the role this dam plays in managing water flow and mitigating potential flood hazards in the region.

Year Completed

2003

Dam Length

1380

Dam Height

24

River Or Stream

TROUBLESOME CREEK-TR

Primary Dam Type

Earth

Surface Area

14.3

Hydraulic Height

21

Drainage Area

0.39

Nid Storage

211.6

Structural Height

24

Outlet Gates

None

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

24
       
Seasonal Comparison

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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.