Arlington Subwtrshd Sta 27+02 #8 Reservoir Report

Last Updated: December 14, 2025

Arlington Subwtrshd Sta 27+02 #8 is a dam located in Woodbury, Iowa, with a primary purpose of providing fire protection, stock, or a small fish pond.


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Summary

Built in 1965 by the USDA NRCS, this Earth-type dam stands at a height of 31 feet and has a length of 520 feet. The dam has a storage capacity of 67 acre-feet and serves to reduce flood risk in the area.

Managed by the Iowa DNR, Arlington Subwtrshd Sta 27+02 #8 is state-regulated and undergoes regular inspections for safety and compliance. The dam is classified as having a low hazard potential and a moderate risk assessment score of 3. Despite not having a condition assessment rating, the dam continues to serve its purpose effectively in protecting the surrounding area from potential water-related hazards.

With its location in MOVILLE and its association with the TR-WEST FORK LITTLE SIOUX RIV, Arlington Subwtrshd Sta 27+02 #8 plays a crucial role in water resource management and climate resilience efforts in the region. As a valuable infrastructure asset, the dam contributes to the overall environmental and public safety goals of the community while supporting various water-related activities.

Year Completed

1965

Dam Length

520

Dam Height

31

River Or Stream

TR-WEST FORK LITTLE SIOUX RIV

Primary Dam Type

Earth

Surface Area

4

Drainage Area

0.46

Nid Storage

67

Hazard Potential

Low

Foundations

Soil

Nid Height

31
       
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.