Cord Subwatershed M-7234 Reservoir Report
Last Updated: December 13, 2025
Located in Woodbury County, Iowa, the Cord Subwatershed M-7234 is a vital water resource managed by the local government with oversight from the Iowa Department of Natural Resources.
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Summary
Built in 1957, this Earth dam serves multiple purposes including fire protection, stock watering, small fish pond management, and flood risk reduction. With a dam height of 41 feet and a storage capacity of 102 acre-feet, this structure plays a critical role in managing the flow of TR-Miller Creek and protecting the surrounding area from potential flooding.
Despite being classified as having a low hazard potential, the Cord Subwatershed M-7234 is considered to have a moderate risk level, emphasizing the importance of regular inspections and maintenance. The dam's condition has not been rated since its last inspection in 1994, indicating a potential need for updated assessments to ensure its continued effectiveness and safety. While the structure has not experienced any major modifications or incidents, ongoing risk management measures should be implemented to mitigate any potential threats and safeguard the community and environment it serves.
As a key component of the local water infrastructure, the Cord Subwatershed M-7234 represents a crucial link in the broader network of water resource management in the region. With its strategic location in the Rock Island District and proximity to the city of Oto, this dam underscores the importance of sustainable water management practices and the need for continued monitoring and maintenance to protect both the dam's integrity and the surrounding ecosystem.
Year Completed |
1957 |
Dam Length |
400 |
Dam Height |
41 |
River Or Stream |
TR-MILLER CREEK |
Primary Dam Type |
Earth |
Surface Area |
4.8 |
Drainage Area |
0.25 |
Nid Storage |
102 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
41 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Maple River At Mapleton
|
323cfs |
Little Sioux River At Correctionville
|
327cfs |
West Fork Ditch At Hornick
|
80cfs |
Little Sioux River Near Turin
|
1040cfs |
Monona-Harrison Ditch Near Turin
|
158cfs |
Missouri River At Decatur
|
15500cfs |
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.
Cord Subwatershed M-7234