Davis Subwatershed 7-3615 Reservoir Report
Last Updated: December 13, 2025
Davis Subwatershed 7-3615, located in Woodbury, Iowa, is a local government-owned dam designed by USDA NRCS with a primary purpose of fire protection, stock, or small fish pond.
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Summary
Completed in 1958, this earth dam stands at a height of 54 feet and spans 350 feet, with a storage capacity of 160 acre-feet. The dam serves multiple purposes including flood risk reduction, making it a valuable asset for the community.
Managed by the Iowa DNR, this dam is regulated, inspected, and enforced by the state to ensure its safety and functionality. With a low hazard potential and a moderate risk assessment score of 3, Davis Subwatershed 7-3615 plays a crucial role in water resource management in the region. While the condition assessment is currently not rated, the dam continues to provide essential services to the community while mitigating potential risks.
With a drainage area of 0.46 square miles and a surface area of 6.7 acres, this dam contributes to the conservation of water resources and supports the local ecosystem. Despite its modest size, Davis Subwatershed 7-3615 plays a significant role in maintaining water quality, managing flood risks, and providing essential habitat for wildlife. As climate change continues to impact water resources, the importance of sustainable infrastructure like this dam cannot be overstated in ensuring the resilience of our water systems.
Year Completed |
1958 |
Dam Length |
350 |
Dam Height |
54 |
River Or Stream |
TR-COTTONWOOD HOLLOW |
Primary Dam Type |
Earth |
Surface Area |
6.7 |
Drainage Area |
0.46 |
Nid Storage |
160 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
54 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
West Fork Ditch At Hornick
|
80cfs |
Maple River At Mapleton
|
323cfs |
Monona-Harrison Ditch Near Turin
|
158cfs |
Little Sioux River Near Turin
|
1040cfs |
Missouri River At Decatur
|
15500cfs |
Little Sioux River At Correctionville
|
327cfs |
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.
Davis Subwatershed 7-3615