Lake Miami Sediment Basin - Middle Site Reservoir Report
Last Updated: December 8, 2025
Lake Miami Sediment Basin - Middle Site is a Grade Stabilization structure located in Eddyville, Iowa, along Tr-Bluff Creek.
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Summary
Built in 2000 by the USDA NRCS, this Earth dam stands at 33 feet high and spans 300 feet in length, with a storage capacity of 27 acre-feet. Serving as a key control point for sediment runoff, the basin covers a surface area of 2 acres and drains a small watershed of 0.09 square miles.
Despite its low hazard potential and moderate risk assessment, Lake Miami Sediment Basin has not been rated for its condition. The uncontrolled spillway design suggests a minimal risk of overflow, with no outlet gates or locks reported. While the structure is not under state regulation or inspection, its primary purpose of Grade Stabilization remains crucial for maintaining water quality in the area. For water resource and climate enthusiasts, this site offers a fascinating case study in sediment management and erosion control within the context of agricultural landscapes in Iowa.
With its strategic location and significant impact on local water quality, Lake Miami Sediment Basin - Middle Site represents a vital piece of infrastructure in Monroe County, Iowa. As a State-owned facility, it plays a crucial role in preventing soil erosion and protecting downstream water resources. The absence of a designated Emergency Action Plan and lack of recent inspections raise questions about the long-term management and maintenance of this structure, highlighting the need for continued monitoring and oversight to ensure its continued effectiveness in sediment and erosion control efforts.
Year Completed |
2000 |
Dam Length |
300 |
Dam Height |
33 |
River Or Stream |
Tr- Bluff Creek |
Primary Dam Type |
Earth |
Surface Area |
2 |
Drainage Area |
0.09 |
Nid Storage |
27 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
33 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Cedar Creek Near Bussey
|
11cfs |
Des Moines River Near Tracy
|
1400cfs |
English Creek Near Knoxville
|
2cfs |
Des Moines River Near Pella
|
2080cfs |
South Skunk River Near Oskaloosa
|
485cfs |
Chariton River Near Rathbun
|
14cfs |
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.
Area Campgrounds
| Location | Reservations | Toilets |
|---|---|---|
Miami Lake Park
|
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Cedar Creek Access
|
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Eveland Access
|
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Quercus Wilderness Area
|
Lake Miami Sediment Basin - Middle Site