Anderson Dam Reservoir Report
Last Updated: December 6, 2025
Anderson Dam, located in Wapello, Iowa, is a privately owned structure with a primary purpose of fire protection, stock, or small fish pond.
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Summary
Constructed in 1999 by the USDA NRCS, this earth dam stands at a height of 38 feet and spans 295 feet in length. With a storage capacity of 20 acre-feet, the dam serves the TR- SUGAR CREEK river or stream and has a low hazard potential.
Despite being unregulated by the state, Anderson Dam poses a moderate risk level (3) and has not been rated for its condition assessment. The dam features an uncontrolled spillway type and is built on a stone core foundation with a soil base. With a surface area of 2 acres and a drainage area of 0.02 square miles, the dam plays a crucial role in water resource management in the region.
Although the dam has not been inspected or assessed for its emergency action plan, it remains an essential structure for the local community's water needs and environmental protection. As water resource and climate enthusiasts, understanding the significance and risk factors associated with Anderson Dam is vital for ensuring its continued functionality and safety for all stakeholders involved.
Year Completed |
1999 |
Dam Length |
295 |
Dam Height |
38 |
River Or Stream |
TR- SUGAR CREEK |
Primary Dam Type |
Earth |
Surface Area |
2 |
Drainage Area |
0.02 |
Nid Storage |
20 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
38 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Des Moines River At Ottumwa
|
1090cfs |
Fox River At Bloomfield
|
7cfs |
North Skunk River Near Sigourney
|
97cfs |
South Skunk River Near Oskaloosa
|
485cfs |
Des Moines River Near Tracy
|
1400cfs |
Des Moines River At Keosauqua
|
1800cfs |
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.
Anderson Dam