East Fork Big Cr Watershed Site E-16 Reservoir Report
Last Updated: December 11, 2025
East Fork Big Cr Watershed Site E-16 is a low hazard potential earth dam located in Decatur, Iowa, constructed in 1992 for fire protection, stock, and small fish pond purposes.
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Summary
Managed by the USDA NRCS, this dam serves to reduce flood risks in the area, with a storage capacity of 79 acre-feet and a drainage area of 0.25 square miles.
With a surface area of 5.2 acres and a height of 18 feet, this earth dam on the TR- East Fork Big Creek is regulated by the Iowa DNR and undergoes regular state inspections and enforcement to ensure its safety and functionality. The dam has not been rated for its condition assessment, but is classified as having a moderate risk level. Despite its uncontrolled spillway type, the dam poses low hazard potential to the surrounding environment.
The East Fork Big Cr Watershed Site E-16 is a key component in the management of water resources in the area, providing essential protection against floods and supporting local fire protection and stock needs. With its strategic location and purposeful design, this dam exemplifies the importance of sustainable water resource management in mitigating climate-related risks and ensuring the safety and well-being of the community.
Year Completed |
1992 |
Dam Length |
435 |
Dam Height |
18 |
River Or Stream |
TR- EAST FORK BIG CREEK |
Primary Dam Type |
Earth |
Surface Area |
5.2 |
Drainage Area |
0.25 |
Nid Storage |
79 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
18 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
East Fork Big Cr Watershed Site E-16