West Douglas Watershed Site K-1 Reservoir Report

Last Updated: December 13, 2025

West Douglas Watershed Site K-1 is a local government-owned structure located in Villisca, Iowa, within Adams County.


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Summary

This earth dam, completed in 1968 by USDA NRCS, serves multiple purposes including fire protection, stock, small fish pond, and flood risk reduction. With a dam height of 28 feet and a length of 671 feet, it has a storage capacity of 123 acre-feet and covers a surface area of 8 acres.

Managed by the Iowa Department of Natural Resources, this site is regulated, permitted, inspected, and enforced by state agencies to ensure its safety and compliance with environmental regulations. Despite being classified as low hazard potential and having a moderate risk assessment rating, the condition of the dam is currently not rated. The spillway type is uncontrolled, and there are no outlet gates or associated structures at the site.

West Douglas Watershed Site K-1 is an essential infrastructure for water resource management and climate resilience in the region. Water enthusiasts and climate advocates can appreciate the efforts of local government and federal agencies in maintaining this dam for various purposes, contributing to the overall protection of the Middle Nodaway River and surrounding areas from potential flooding and water scarcity issues.

Year Completed

1968

Dam Length

671

Dam Height

28

River Or Stream

TR-MIDDLE NODAWAY

Primary Dam Type

Earth

Surface Area

8

Drainage Area

0.61

Nid Storage

123

Hazard Potential

Low

Foundations

Soil

Nid Height

28
       
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.