Cord Subwatershed M-10464 Reservoir Report
Last Updated: December 13, 2025
Located in Woodbury County, Iowa, the Cord Subwatershed M-10464 is a vital water resource managed by the local government.
°F
°F
mph
Wind
%
Humidity
Summary
Designed by the USDA NRCS and regulated by the Iowa DNR, this subwatershed plays a crucial role in flood risk reduction and other purposes. The primary dam type in this area is earth with a height of 28 feet and a length of 550 feet, completed in 1957. With a storage capacity of 75 acre-feet and a drainage area of 0.33 square miles, this dam serves as a key structure in managing water flow in the TR-Miller Creek.
Despite being rated with a low hazard potential and in a not rated condition assessment, the Cord Subwatershed M-10464 poses a moderate risk, according to the data. With an uncontrolled spillway type and no inspection records since 1978, there is a need for regular monitoring and maintenance to ensure its effectiveness in mitigating flooding and protecting the surrounding area. As a significant component of the water infrastructure in the region, it is essential for stakeholders to prioritize its upkeep and risk management strategies to safeguard the community and environment from potential hazards.
Year Completed |
1957 |
Dam Length |
550 |
Dam Height |
28 |
River Or Stream |
TR-MILLER CREEK |
Primary Dam Type |
Earth |
Surface Area |
2.2 |
Drainage Area |
0.33 |
Nid Storage |
75 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
28 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Little Sioux River At Correctionville
|
327cfs |
Maple River At Mapleton
|
323cfs |
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-10464