Baker Subwatershed Site 1-3 Reservoir Report
Last Updated: December 13, 2025
Baker Subwatershed Site 1-3, located in Monona, Iowa, is a local government-owned earth dam completed in 1959 with a primary purpose of fire protection, stock, or small fish pond, as well as flood risk reduction.
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Summary
The dam has a height of 38 feet, a length of 600 feet, and a storage capacity of 89 acre-feet. It is situated on the TR-MAPLE RIVER and is regulated by the Iowa Department of Natural Resources.
Despite being classified as having a low hazard potential, the dam's risk assessment indicates a moderate level of risk, with a risk rating of 3. The condition of the dam is currently not rated, and there is no information available on the last inspection date or inspection frequency. The Emergency Action Plan (EAP) status and compliance with guidelines are also unknown at this time.
Overall, Baker Subwatershed Site 1-3 serves multiple functions in the local community, from providing water for fire protection to managing flood risk. However, there are some uncertainties regarding its current condition and emergency preparedness that may warrant further attention and assessment by relevant authorities and stakeholders in water resource and climate management.
Year Completed |
1959 |
Dam Length |
600 |
Dam Height |
38 |
River Or Stream |
TR-MAPLE RIVER |
Primary Dam Type |
Earth |
Surface Area |
3.9 |
Drainage Area |
0.39 |
Nid Storage |
89 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
38 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Little Sioux River Near Turin
|
1040cfs |
Monona-Harrison Ditch Near Turin
|
158cfs |
Maple River At Mapleton
|
323cfs |
West Fork Ditch At Hornick
|
80cfs |
Soldier River At Pisgah
|
112cfs |
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.
Baker Subwatershed Site 1-3