Arlington Subwtrshd Sta 29+60 #6 Reservoir Report
Last Updated: December 14, 2025
Arlington Subwtrshd Sta 29+60 #6 is a water management structure located in Woodbury County, Iowa, specifically in the city of Moville.
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Summary
This earth dam, completed in 1965 by the USDA NRCS, serves multiple purposes including fire protection, stock, small fish ponds, and flood risk reduction. With a height of 33 feet and a length of 585 feet, the dam has a storage capacity of 131 acre-feet and covers a surface area of 6.7 acres, draining a watershed area of 0.79 square miles.
Managed by the Iowa Department of Natural Resources, Arlington Subwtrshd Sta 29+60 #6 is classified as a low hazard potential structure with a moderate risk assessment rating. The dam is state-regulated and monitored for inspection, permitting, and enforcement to ensure its safety and functionality. Although its condition is currently not rated, the structure meets guidelines for emergency action plans and is equipped with an uncontrolled spillway.
For water resource and climate enthusiasts, Arlington Subwtrshd Sta 29+60 #6 represents a vital component of the local watershed system, providing essential services for water storage, flood control, and habitat preservation. With its strategic location along the West Fork Little Sioux River, this dam exemplifies the intersection of human infrastructure and natural ecosystems, highlighting the importance of sustainable water management practices in mitigating environmental risks and promoting community resilience in the face of changing climate conditions.
Year Completed |
1965 |
Dam Length |
585 |
Dam Height |
33 |
River Or Stream |
TR-WEST FORK LITTLE SIOUX RIV |
Primary Dam Type |
Earth |
Surface Area |
6.7 |
Drainage Area |
0.79 |
Nid Storage |
131 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
33 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Little Sioux River At Correctionville
|
327cfs |
Floyd River At James
|
187cfs |
Missouri River At Sioux City
|
13700cfs |
Perry Creek Near Milnerville
|
25cfs |
West Fork Ditch At Hornick
|
80cfs |
Omaha Cr At Homer
|
45cfs |
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Arlington Subwtrshd Sta 29+60 #6