Myers Dam Reservoir Report
Last Updated: December 6, 2025
Myers Dam, located in Arbela, MO, is a privately owned structure designed by French Reneker for grade stabilization purposes along the Tr- South Wyaconda River.
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Summary
Completed in 2019, this earth dam stands at a height of 21 feet and spans 420 feet in length, with a storage capacity of 50 acre-feet. With a low hazard potential and a moderate risk assessment rating, Myers Dam is regulated by the Iowa Department of Natural Resources and undergoes regular state inspections and enforcement to ensure its structural integrity.
This dam features an uncontrolled spillway with a width of 10 feet, serving to manage a maximum discharge of 40 cubic feet per second. The surrounding area covers 4 acres with a drainage area of 0.11 square miles, providing vital protection against erosion and flooding in the region. While its condition assessment is currently not rated, Myers Dam remains a crucial infrastructure for water resource management and climate resilience efforts in Davis County, Iowa.
As a key component of the local water management system, Myers Dam plays a significant role in maintaining the stability of the Tr- South Wyaconda River watershed. With its stone core and soil foundation, this structure exemplifies effective engineering design for grade stabilization purposes. Despite its low hazard potential, ongoing risk assessments and management measures are essential to ensure the continued safety and functionality of Myers Dam for the surrounding community and the environment.
Year Completed |
2019 |
Dam Length |
420 |
Dam Height |
21 |
River Or Stream |
Tr- South Wyaconda River |
Primary Dam Type |
Earth |
Surface Area |
4 |
Hydraulic Height |
21 |
Drainage Area |
0.11 |
Nid Storage |
50 |
Structural Height |
21 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
21 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Fox River At Bloomfield
|
7cfs |
Chariton River Near Moulton
|
34cfs |
Chariton River At Livonia
|
45cfs |
Des Moines River At Ottumwa
|
1090cfs |
Des Moines River At Keosauqua
|
1800cfs |
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 |
|---|---|---|
McGowen Rec Area
|
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Lake Fisher
|
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Drakesville City Park
|
Myers Dam