Baker Subwatershed Site 5-3 Reservoir Report
Last Updated: December 13, 2025
Baker Subwatershed Site 5-3, located in Monona County, Iowa, is a significant water management site designed by the USDA NRCS for fire protection, stock, and small fish pond purposes.
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Summary
This earth dam, completed in 1959, stands at a height of 40 feet and spans a length of 316 feet, with a storage capacity of 30 acre-feet. Situated on the TR-MAPLE RIVER, this dam serves to reduce flood risks in the area, contributing to the overall water resource management efforts in the region.
Managed by the Iowa DNR, Baker Subwatershed Site 5-3 is regulated and permitted by state authorities, ensuring its compliance with safety and environmental standards. With a low hazard potential and a moderate risk assessment rating, this dam plays a crucial role in mitigating potential flood events and safeguarding the surrounding community. While the condition assessment is currently not rated, regular inspections and enforcement by state agencies are in place to monitor and maintain the integrity of the structure.
As part of the Omaha District, this water management site in Turin, Iowa, benefits from federal funding and design support from the Natural Resources Conservation Service. While its spillway is uncontrolled, the dam's hydraulic height and structural features are carefully designed to effectively manage water flow and storage. The Baker Subwatershed Site 5-3 serves as a vital component of the local water resource infrastructure, highlighting the importance of sustainable and resilient water management practices in the face of climate challenges.
Year Completed |
1959 |
Dam Length |
316 |
Dam Height |
40 |
River Or Stream |
TR-MAPLE RIVER |
Primary Dam Type |
Earth |
Surface Area |
1.6 |
Drainage Area |
0.24 |
Nid Storage |
30 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
40 |
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 5-3